Release v0.2.3

* Added a startup screen preference option

* changed string and keys to be consistent

.github/CONTRIBUTING.md

@@ -0,0 +1,31 @@
+# Bugs
+* Include version (Setting > About > Version)
+ * If not latest, try updating, it may have already been solved
+ * Dev version is equal to the number of commits as seen in the main page
+* Include steps to reproduce (if not obvious from description)
+* Include screenshot (if needed)
+* If it could be device-dependent, try reproducing on another device (if possible), include results and device names, OS, modifications (root, Xposed)
+* **Before reporting a new issue, take a look at the [FAQ](https://github.com/inorichi/tachiyomi/wiki/FAQ), the [changelog](https://github.com/inorichi/tachiyomi/releases) and the already opened [issues](https://github.com/inorichi/tachiyomi/issues).**
+* For large logs use http://pastebin.com/ (or similar)
+* For multipart issues **use list** like this:
+ * [x] Done
+ * [ ] Not done
+```
+* [x] Done
+* [ ] Not done
+```
+* Don't put together too many unrelated requests into one issue
+
+DO: https://github.com/inorichi/tachiyomi/issues/24 https://github.com/inorichi/tachiyomi/issues/71
+
+DON'T: https://github.com/inorichi/tachiyomi/issues/75
+
+# Feature requests
+
+* Write a detailed issue, explaning what it should do or how. Avoid writing just "like X app does"
+* Include screenshot (if needed)
+
+# Translations
+
+File `app/src/main/res/values/strings.xml` should be copied over to appropriate directories and then translated.
+Consult [Android.com](http://developer.android.com/training/basics/supporting-devices/languages.html#CreateDirs)

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,7 @@
+**Please read https://github.com/inorichi/tachiyomi/blob/master/.github/CONTRIBUTING.md before posting**
+
+Remove line above and describe your issue here. Fill out version below. Use Preview.
+
+
+Version: r000 or v0.0.0
+(other relevant info like OS)

.travis.yml

@@ -5,7 +5,7 @@ android:
     - tools
 
     # The BuildTools version used by your project
-    - build-tools-23.0.1
+    - build-tools-23.0.3
     - android-23
     - extra-android-m2repository
     - extra-google-m2repository
@@ -15,5 +15,14 @@ android:
 before_script:
     - chmod +x gradlew
 #Build, and run tests
-script: "./gradlew build testDebug"
+script: "./gradlew clean buildDebug"
 sudo: false
+
+before_cache:
+  - rm -f $HOME/.gradle/caches/modules-2/modules-2.lock
+cache:
+  directories:
+    - $HOME/.gradle/caches/
+    - $HOME/.gradle/wrapper/
+env:
+  - GRADLE_OPTS="-XX:MaxPermSize=1024m -XX:+CMSClassUnloadingEnabled -XX:+HeapDumpOnOutOfMemoryError -Xmx2048m"

README.md

@@ -1,8 +1,16 @@
-Tachiyomi is a manga reader for Android free and open source.
+| Build | Download | Auto Update |
+|-------|----------|-------------|
+| [![TeamCity (simple build status)](https://img.shields.io/teamcity/https/teamcity.kanade.eu/s/tachiyomi_Build.svg)](https://teamcity.kanade.eu/project.html?projectId=tachiyomi) [![Travis](https://img.shields.io/travis/inorichi/tachiyomi.svg)](https://travis-ci.org/inorichi/tachiyomi) | [![stable release](https://img.shields.io/github/release/inorichi/tachiyomi.svg?maxAge=3600&label=stable)](https://github.com/inorichi/tachiyomi/releases) [![latest dev build](https://img.shields.io/badge/dev-latest%20build-blue.svg)](http://tachiyomi.kanade.eu/latest/app-debug.apk) | [![fdroid release](https://img.shields.io/badge/stable-F--Droid-blue.svg)](https://f-droid.org/repository/browse/?fdid=eu.kanade.tachiyomi) [![fdroid debug](https://img.shields.io/badge/dev-F--Droid-blue.svg)](//github.com/inorichi/tachiyomi/wiki/FDroid-for-debug-versions) |
+
+## [Report an issue](https://github.com/inorichi/tachiyomi/blob/master/.github/CONTRIBUTING.md)
+
+**Before reporting a new issue, take a look at the [FAQ](https://github.com/inorichi/tachiyomi/wiki/FAQ), the [changelog](https://github.com/inorichi/tachiyomi/releases) and the already opened issues.**
+
+Tachiyomi is a free and open source manga reader for Android.
 
 Keep in mind it's still a beta, so expect it to crash sometimes.
 
-Current features:
+# Features
 
 * Online and offline reading
 * Configurable reader with multiple viewers and settings

app/build.gradle

@@ -1,19 +1,14 @@
 import java.text.SimpleDateFormat
 
-apply plugin: 'android-sdk-manager'
 apply plugin: 'com.android.application'
-apply plugin: 'com.neenbedankt.android-apt'
+apply plugin: 'kotlin-android'
-apply plugin: 'me.tatarka.retrolambda'
+apply plugin: 'kotlin-android-extensions'
-
-retrolambda {
-    jvmArgs '-noverify'
-}
 
 ext {
     // Git is needed in your system PATH for these commands to work.
     // If it's not installed, you can return a random value as a workaround
     getCommitCount = {
-        return 'git rev-list --count origin/master'.execute().text.trim()
+        return 'git rev-list --count HEAD'.execute().text.trim()
         // return "1"
     }
 
@@ -29,9 +24,13 @@ ext {
     }
 }
 
+def includeUpdater() {
+    return hasProperty("include_updater")
+}
+
 android {
     compileSdkVersion 23
-    buildToolsVersion "23.0.2"
+    buildToolsVersion "23.0.3"
     publishNonDefault true
 
     defaultConfig {
@@ -39,20 +38,22 @@ android {
         minSdkVersion 16
         targetSdkVersion 23
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
-        versionCode 1
+        versionCode 10
-        versionName "0.1.0"
+        versionName "0.2.3"
 
         buildConfigField "String", "COMMIT_COUNT", "\"${getCommitCount()}\""
         buildConfigField "String", "COMMIT_SHA", "\"${getGitSha()}\""
         buildConfigField "String", "BUILD_TIME", "\"${getBuildTime()}\""
-    }
+        buildConfigField "boolean", "INCLUDE_UPDATER", "${includeUpdater()}"
 
-    compileOptions {
+        vectorDrawables.useSupportLibrary = true
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
     }
 
     buildTypes {
+        debug {
+            versionNameSuffix "-${getCommitCount()}"
+            applicationIdSuffix ".debug"
+        }
         release {
             minifyEnabled true
             shrinkResources true
@@ -70,71 +71,119 @@ android {
 
     lintOptions {
         abortOnError false
+        checkReleaseBuilds false
+    }
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
     }
 
 }
 
 dependencies {
-    final SUPPORT_LIBRARY_VERSION = '23.1.1'
-    final DAGGER_VERSION = '2.0.2'
-    final MOCKITO_VERSION = '1.10.19'
-    final STORIO_VERSION = '1.7.0'
-    final ICEPICK_VERSION = '3.1.0'
 
-    compile fileTree(dir: 'libs', include: ['*.jar'])
+    // Modified dependencies
-    compile project(":SubsamplingScaleImageView")
+    compile 'com.github.inorichi:subsampling-scale-image-view:421fb81'
+    compile 'com.github.inorichi:ReactiveNetwork:69092ed'
 
-    compile "com.android.support:support-v4:$SUPPORT_LIBRARY_VERSION"
+    // Android support library
-    compile "com.android.support:appcompat-v7:$SUPPORT_LIBRARY_VERSION"
+    final support_library_version = '23.4.0'
-    compile "com.android.support:cardview-v7:$SUPPORT_LIBRARY_VERSION"
+    compile "com.android.support:support-v4:$support_library_version"
-    compile "com.android.support:design:$SUPPORT_LIBRARY_VERSION"
+    compile "com.android.support:appcompat-v7:$support_library_version"
-    compile "com.android.support:recyclerview-v7:$SUPPORT_LIBRARY_VERSION"
+    compile "com.android.support:cardview-v7:$support_library_version"
-    compile "com.android.support:support-annotations:$SUPPORT_LIBRARY_VERSION"
+    compile "com.android.support:design:$support_library_version"
-    compile 'com.squareup.okhttp:okhttp-urlconnection:2.7.2'
+    compile "com.android.support:recyclerview-v7:$support_library_version"
-    compile 'com.squareup.okhttp:okhttp:2.7.2'
+    compile "com.android.support:support-annotations:$support_library_version"
-    compile 'com.squareup.okio:okio:1.6.0'
+    compile "com.android.support:customtabs:$support_library_version"
-    compile 'com.google.code.gson:gson:2.5'
+
+    // ReactiveX
+    compile 'io.reactivex:rxandroid:1.2.1'
+    compile 'io.reactivex:rxjava:1.1.6'
+    compile 'com.f2prateek.rx.preferences:rx-preferences:1.0.2'
+
+    // Network client
+    compile "com.squareup.okhttp3:okhttp:3.3.1"
+
+    // REST
+    final retrofit_version = '2.1.0'
+    compile "com.squareup.retrofit2:retrofit:$retrofit_version"
+    compile "com.squareup.retrofit2:converter-gson:$retrofit_version"
+    compile "com.squareup.retrofit2:adapter-rxjava:$retrofit_version"
+
+    // IO
+    compile 'com.squareup.okio:okio:1.8.0'
+
+    // JSON
+    compile 'com.google.code.gson:gson:2.7'
+    compile 'com.github.salomonbrys.kotson:kotson:2.3.0'
+
+    // YAML
+    compile 'com.github.bmoliveira:snake-yaml:v1.18-android'
+
+    // JavaScript engine
+    compile 'com.squareup.duktape:duktape-android:0.9.5'
+
+    // Disk cache
     compile 'com.jakewharton:disklrucache:2.0.2'
-    compile 'org.jsoup:jsoup:1.8.3'
+
-    compile 'io.reactivex:rxandroid:1.1.0'
+    // Parse HTML
-    compile 'io.reactivex:rxjava:1.1.0'
+    compile 'org.jsoup:jsoup:1.9.2'
-    compile 'com.f2prateek.rx.preferences:rx-preferences:1.0.1'
+
-    compile "com.pushtorefresh.storio:sqlite:$STORIO_VERSION"
+    // Changelog
-    compile "com.pushtorefresh.storio:sqlite-annotations:$STORIO_VERSION"
+    compile 'com.github.gabrielemariotti.changeloglib:changelog:2.1.0'
-    compile 'info.android15.nucleus:nucleus:2.0.4'
+
-    compile 'de.greenrobot:eventbus:2.4.0'
+    // Database
-    compile 'com.github.bumptech.glide:glide:3.6.1'
+    compile "com.pushtorefresh.storio:sqlite:1.9.0"
-    compile 'com.jakewharton:butterknife:7.0.1'
+
-    compile 'com.jakewharton.timber:timber:4.1.0'
+    // Model View Presenter
-    compile 'uk.co.ribot:easyadapter:1.5.0@aar'
+    final nucleus_version = '3.0.0'
-    compile 'ch.acra:acra:4.7.0'
+    compile "info.android15.nucleus:nucleus:$nucleus_version"
-    compile "frankiesardo:icepick:$ICEPICK_VERSION"
+    compile "info.android15.nucleus:nucleus-support-v4:$nucleus_version"
-    provided "frankiesardo:icepick-processor:$ICEPICK_VERSION"
+    compile "info.android15.nucleus:nucleus-support-v7:$nucleus_version"
+
+    // Dependency injection
+    compile "uy.kohesive.injekt:injekt-core:1.16.1"
+
+    // Image library
+    compile 'com.github.bumptech.glide:glide:3.7.0'
+    compile 'com.github.bumptech.glide:okhttp3-integration:1.4.0@aar'
+
+    // Logging
+    compile 'com.jakewharton.timber:timber:4.1.2'
+
+    // Crash reports
+    compile 'ch.acra:acra:4.9.0'
+
+    // UI
+    compile 'com.dmitrymalkovich.android:material-design-dimens:1.2'
     compile 'com.github.dmytrodanylyk.android-process-button:library:1.0.4'
-    compile 'eu.davidea:flexible-adapter:4.2.0@aar'
+    compile 'eu.davidea:flexible-adapter:4.2.0'
-    compile 'com.nononsenseapps:filepicker:2.5.1'
+    compile 'com.nononsenseapps:filepicker:2.5.2'
-    compile 'com.amulyakhare:com.amulyakhare.textdrawable:1.0.1'
+    compile 'com.github.amulyakhare:TextDrawable:558677e'
-    compile 'com.github.pwittchen:reactivenetwork:0.1.5'
+    compile 'com.afollestad.material-dialogs:core:0.8.6.1'
-
+    compile 'net.xpece.android:support-preference:0.8.1'
-    compile "com.google.dagger:dagger:$DAGGER_VERSION"
+    compile 'me.zhanghai.android.systemuihelper:library:1.0.0'
-    apt "com.google.dagger:dagger-compiler:$DAGGER_VERSION"
+    compile 'org.adw.library:discrete-seekbar:1.0.1'
-    apt "com.pushtorefresh.storio:sqlite-annotations-processor:$STORIO_VERSION"
-    provided 'org.glassfish:javax.annotation:10.0-b28'
-
-    compile('com.mikepenz:materialdrawer:4.6.4@aar') {
-        transitive = true
-    }
-    compile('com.github.afollestad.material-dialogs:core:0.8.5.3@aar') {
-        transitive = true
-    }
 
+    // Tests
     testCompile 'junit:junit:4.12'
-    testCompile 'org.assertj:assertj-core:2.3.0'
+    testCompile 'org.assertj:assertj-core:1.7.1'
-    testCompile "org.mockito:mockito-core:$MOCKITO_VERSION"
+    testCompile 'org.mockito:mockito-core:1.10.19'
-    testCompile('org.robolectric:robolectric:3.0') {
+    testCompile 'org.robolectric:robolectric:3.1'
-        exclude group: 'commons-logging', module: 'commons-logging'
+
-        exclude group: 'org.apache.httpcomponents', module: 'httpclient'
+    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
 }
 
-    androidTestApt "com.google.dagger:dagger-compiler:$DAGGER_VERSION"
+buildscript {
+    ext.kotlin_version = '1.0.3'
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+repositories {
+    mavenCentral()
 }

app/proguard-rules.pro

@@ -1,16 +1,11 @@
 -dontobfuscate
 
--keep class eu.kanade.tachiyomi.injection.** { *; }
-
-# Retrolambda
--dontwarn java.lang.invoke.*
-
 # OkHttp
 -keepattributes Signature
 -keepattributes *Annotation*
--keep class com.squareup.okhttp.** { *; }
+-keep class okhttp3.** { *; }
--keep interface com.squareup.okhttp.** { *; }
+-keep interface okhttp3.** { *; }
--dontwarn com.squareup.okhttp.**
+-dontwarn okhttp3.**
 -dontwarn okio.**
 
 # Okio
@@ -19,35 +14,6 @@
 -dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
 -dontwarn okio.**
 
-# ButterKnife 7
--keep class butterknife.** { *; }
--dontwarn butterknife.internal.**
--keep class **$$ViewBinder { *; }
-
--keepclasseswithmembernames class * {
-    @butterknife.* <fields>;
-}
-
--keepclasseswithmembernames class * {
-    @butterknife.* <methods>;
-}
-
-#Easy-Adapter v1.5.0
--keepattributes *Annotation*
--keepclassmembers class * extends uk.co.ribot.easyadapter.ItemViewHolder {
-    public <init>(...);
- }
-
-## GreenRobot EventBus specific rules ##
-# https://github.com/greenrobot/EventBus/blob/master/HOWTO.md#proguard-configuration
--keepclassmembers class ** {
-    public void onEvent*(***);
-}
-
-# Don't warn for missing support classes
--dontwarn de.greenrobot.event.util.*$Support
--dontwarn de.greenrobot.event.util.*$SupportManagerFragment
-
 # Glide specific rules #
 # https://github.com/bumptech/glide
 -keep public class * implements com.bumptech.glide.module.GlideModule
@@ -57,7 +23,6 @@
 }
 
 # RxJava 1.1.0
-
 -dontwarn sun.misc.**
 
 -keepclassmembers class rx.internal.util.unsafe.*ArrayQueue*Field* {
@@ -73,6 +38,18 @@
     rx.internal.util.atomic.LinkedQueueNode consumerNode;
 }
 
+# Retrofit 2.X
+## https://square.github.io/retrofit/ ##
+
+-dontwarn retrofit2.**
+-keep class retrofit2.** { *; }
+-keepattributes Signature
+-keepattributes Exceptions
+
+-keepclasseswithmembers class * {
+    @retrofit2.http.* <methods>;
+}
+
 # AppCombat
 -keep public class android.support.v7.widget.** { *; }
 -keep public class android.support.v7.internal.widget.** { *; }
@@ -82,13 +59,6 @@
     public <init>(android.content.Context);
 }
 
-# Icepick
--dontwarn icepick.**
--keep class **$$Icepick { *; }
--keepclasseswithmembernames class * {
-    @icepick.* <fields>;
-}
-
 ## GSON 2.2.4 specific rules ##
 
 # Gson uses generic type information stored in a class file when working with fields. Proguard
@@ -147,3 +117,11 @@
 # Keep the support library
 -keep class org.acra.** { *; }
 -keep interface org.acra.** { *; }
+
+# SnakeYaml
+-keep class org.yaml.snakeyaml.** { public protected private *; }
+-keep class org.yaml.snakeyaml.** { public protected private *; }
+-dontwarn org.yaml.snakeyaml.**
+
+# Duktape
+-keep class com.squareup.duktape.** { *; }

app/src/main/AndroidManifest.xml

@@ -4,6 +4,7 @@
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
@@ -11,12 +12,14 @@
     <application
         android:name=".App"
         android:allowBackup="true"
+        android:hardwareAccelerated="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
-        android:hardwareAccelerated="true"
+        android:largeHeap="true"
-        android:theme="@style/AppTheme" >
+        android:theme="@style/Theme.Tachiyomi" >
         <activity
-            android:name=".ui.main.MainActivity">
+            android:name=".ui.main.MainActivity"
+            android:theme="@style/Theme.BrandedLaunch">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
@@ -29,10 +32,7 @@
         </activity>
         <activity
             android:name=".ui.reader.ReaderActivity"
-            android:parentActivityName=".ui.manga.MangaActivity">
+            android:theme="@style/Theme.Reader">
-            <meta-data
-                android:name="android.support.PARENT_ACTIVITY"
-                android:value=".ui.manga.MangaActivity" />
         </activity>
         <activity
             android:name=".ui.setting.SettingsActivity"
@@ -40,28 +40,27 @@
             android:parentActivityName=".ui.main.MainActivity" >
         </activity>
         <activity
-            android:name=".ui.library.category.CategoryActivity"
+            android:name=".ui.category.CategoryActivity"
             android:label="@string/label_categories"
             android:parentActivityName=".ui.main.MainActivity">
         </activity>
-
         <activity
             android:name=".ui.setting.SettingsDownloadsFragment$CustomLayoutPickerActivity"
             android:label="@string/app_name"
             android:theme="@style/FilePickerTheme">
         </activity>
 
-        <service android:name=".data.sync.LibraryUpdateService"
+        <service android:name=".data.library.LibraryUpdateService"
             android:exported="false"/>
 
         <service android:name=".data.download.DownloadService"
             android:exported="false"/>
 
-        <service android:name=".data.sync.UpdateMangaSyncService"
+        <service android:name=".data.mangasync.UpdateMangaSyncService"
             android:exported="false"/>
 
         <receiver
-            android:name=".data.sync.LibraryUpdateService$SyncOnConnectionAvailable"
+            android:name=".data.library.LibraryUpdateService$SyncOnConnectionAvailable"
             android:enabled="false">
             <intent-filter>
                 <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
@@ -69,15 +68,40 @@
         </receiver>
 
         <receiver
-            android:name=".data.sync.LibraryUpdateAlarm">
+            android:name=".data.library.LibraryUpdateService$SyncOnPowerConnected"
+            android:enabled="false">
+            <intent-filter>
+                <action android:name="android.intent.action.ACTION_POWER_CONNECTED" />
+            </intent-filter>
+        </receiver>
+
+        <receiver
+            android:name=".data.library.LibraryUpdateService$CancelUpdateReceiver">
+        </receiver>
+
+        <receiver
+            android:name=".data.updater.UpdateDownloader$InstallOnReceived">
+        </receiver>
+
+        <receiver
+            android:name=".data.library.LibraryUpdateAlarm">
             <intent-filter>
                 <action android:name="android.intent.action.BOOT_COMPLETED"/>
                 <action android:name="eu.kanade.UPDATE_LIBRARY" />
             </intent-filter>
         </receiver>
 
+        <receiver
+            android:name=".data.updater.UpdateDownloaderAlarm">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED"/>
+                <action android:name="eu.kanade.CHECK_UPDATE"/>
+            </intent-filter>
+        </receiver>
+
+
         <meta-data
-            android:name="eu.kanade.tachiyomi.data.cache.CoverGlideModule"
+            android:name="eu.kanade.tachiyomi.data.glide.AppGlideModule"
             android:value="GlideModule" />
 
     </application>

app/src/main/java/eu/kanade/tachiyomi/App.java

@@ -1,57 +0,0 @@
-package eu.kanade.tachiyomi;
-
-import android.app.Application;
-import android.content.Context;
-
-import org.acra.ACRA;
-import org.acra.annotation.ReportsCrashes;
-
-import eu.kanade.tachiyomi.injection.ComponentReflectionInjector;
-import eu.kanade.tachiyomi.injection.component.AppComponent;
-import eu.kanade.tachiyomi.injection.component.DaggerAppComponent;
-import eu.kanade.tachiyomi.injection.module.AppModule;
-import timber.log.Timber;
-
-@ReportsCrashes(
-        formUri = "http://mangafeed.kanade.eu/crash_report",
-        reportType = org.acra.sender.HttpSender.Type.JSON,
-        httpMethod = org.acra.sender.HttpSender.Method.PUT,
-        excludeMatchingSharedPreferencesKeys={".*username.*",".*password.*"}
-)
-public class App extends Application {
-
-    AppComponent applicationComponent;
-    ComponentReflectionInjector<AppComponent> componentInjector;
-
-    @Override
-    public void onCreate() {
-        super.onCreate();
-        if (BuildConfig.DEBUG) Timber.plant(new Timber.DebugTree());
-
-        applicationComponent = DaggerAppComponent.builder()
-                .appModule(new AppModule(this))
-                .build();
-
-        componentInjector =
-                new ComponentReflectionInjector<>(AppComponent.class, applicationComponent);
-
-        ACRA.init(this);
-    }
-
-    public static App get(Context context) {
-        return (App) context.getApplicationContext();
-    }
-
-    public AppComponent getComponent() {
-        return applicationComponent;
-    }
-
-    public ComponentReflectionInjector<AppComponent> getComponentReflection() {
-        return componentInjector;
-    }
-
-    // Needed to replace the component with a test specific one
-    public void setComponent(AppComponent applicationComponent) {
-        this.applicationComponent = applicationComponent;
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/App.kt

@@ -0,0 +1,34 @@
+package eu.kanade.tachiyomi
+
+import android.app.Application
+import org.acra.ACRA
+import org.acra.annotation.ReportsCrashes
+import timber.log.Timber
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.InjektScope
+import uy.kohesive.injekt.registry.default.DefaultRegistrar
+
+@ReportsCrashes(
+        formUri = "http://tachiyomi.kanade.eu/crash_report",
+        reportType = org.acra.sender.HttpSender.Type.JSON,
+        httpMethod = org.acra.sender.HttpSender.Method.PUT,
+        buildConfigClass = BuildConfig::class,
+        excludeMatchingSharedPreferencesKeys = arrayOf(".*username.*", ".*password.*")
+)
+open class App : Application() {
+
+    override fun onCreate() {
+        super.onCreate()
+        Injekt = InjektScope(DefaultRegistrar())
+        Injekt.importModule(AppModule(this))
+
+        if (BuildConfig.DEBUG) Timber.plant(Timber.DebugTree())
+
+        setupAcra()
+    }
+
+    protected open fun setupAcra() {
+        ACRA.init(this)
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/AppModule.kt

@@ -0,0 +1,41 @@
+package eu.kanade.tachiyomi
+
+import android.app.Application
+import com.google.gson.Gson
+import eu.kanade.tachiyomi.data.cache.ChapterCache
+import eu.kanade.tachiyomi.data.cache.CoverCache
+import eu.kanade.tachiyomi.data.database.DatabaseHelper
+import eu.kanade.tachiyomi.data.download.DownloadManager
+import eu.kanade.tachiyomi.data.mangasync.MangaSyncManager
+import eu.kanade.tachiyomi.data.network.NetworkHelper
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.source.SourceManager
+import uy.kohesive.injekt.api.InjektModule
+import uy.kohesive.injekt.api.InjektRegistrar
+import uy.kohesive.injekt.api.addSingletonFactory
+
+class AppModule(val app: Application) : InjektModule {
+
+    override fun InjektRegistrar.registerInjectables() {
+
+            addSingletonFactory { PreferencesHelper(app) }
+
+            addSingletonFactory { DatabaseHelper(app) }
+
+            addSingletonFactory { ChapterCache(app) }
+
+            addSingletonFactory { CoverCache(app) }
+
+            addSingletonFactory { NetworkHelper(app) }
+
+            addSingletonFactory { SourceManager(app) }
+
+            addSingletonFactory { DownloadManager(app) }
+
+            addSingletonFactory { MangaSyncManager(app) }
+
+            addSingletonFactory { Gson() }
+
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/Constants.kt

@@ -0,0 +1,8 @@
+package eu.kanade.tachiyomi
+
+object Constants {
+    const val NOTIFICATION_LIBRARY_ID = 1
+    const val NOTIFICATION_UPDATER_ID = 2
+    const val NOTIFICATION_DOWNLOAD_CHAPTER_ID = 3
+    const val NOTIFICATION_DOWNLOAD_CHAPTER_ERROR_ID = 4
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupManager.kt

@@ -0,0 +1,364 @@
+package eu.kanade.tachiyomi.data.backup
+
+import com.github.salomonbrys.kotson.fromJson
+import com.google.gson.*
+import com.google.gson.stream.JsonReader
+import eu.kanade.tachiyomi.data.backup.serializer.IdExclusion
+import eu.kanade.tachiyomi.data.backup.serializer.IntegerSerializer
+import eu.kanade.tachiyomi.data.database.DatabaseHelper
+import eu.kanade.tachiyomi.data.database.models.*
+import java.io.*
+import java.util.*
+
+/**
+ * This class provides the necessary methods to create and restore backups for the data of the
+ * application. The backup follows a JSON structure, with the following scheme:
+ *
+ * {
+ *     "mangas": [
+ *         {
+ *             "manga": {"id": 1, ...},
+ *             "chapters": [{"id": 1, ...}, {...}],
+ *             "sync": [{"id": 1, ...}, {...}],
+ *             "categories": ["cat1", "cat2", ...]
+ *         },
+ *         { ... }
+ *     ],
+ *     "categories": [
+ *         {"id": 1, ...},
+ *         {"id": 2, ...}
+ *     ]
+ * }
+ *
+ * @param db the database helper.
+ */
+class BackupManager(private val db: DatabaseHelper) {
+
+    private val MANGA = "manga"
+    private val MANGAS = "mangas"
+    private val CHAPTERS = "chapters"
+    private val MANGA_SYNC = "sync"
+    private val CATEGORIES = "categories"
+
+    @Suppress("PLATFORM_CLASS_MAPPED_TO_KOTLIN")
+    private val gson = GsonBuilder()
+            .registerTypeAdapter(Integer::class.java, IntegerSerializer())
+            .setExclusionStrategies(IdExclusion())
+            .create()
+
+    /**
+     * Backups the data of the application to a file.
+     *
+     * @param file the file where the backup will be saved.
+     * @throws IOException if there's any IO error.
+     */
+    @Throws(IOException::class)
+    fun backupToFile(file: File) {
+        val root = backupToJson()
+
+        FileWriter(file).use {
+            gson.toJson(root, it)
+        }
+    }
+
+    /**
+     * Creates a JSON object containing the backup of the app's data.
+     *
+     * @return the backup as a JSON object.
+     */
+    fun backupToJson(): JsonObject {
+        val root = JsonObject()
+
+        // Backup library mangas and its dependencies
+        val mangaEntries = JsonArray()
+        root.add(MANGAS, mangaEntries)
+        for (manga in db.getFavoriteMangas().executeAsBlocking()) {
+            mangaEntries.add(backupManga(manga))
+        }
+
+        // Backup categories
+        val categoryEntries = JsonArray()
+        root.add(CATEGORIES, categoryEntries)
+        for (category in db.getCategories().executeAsBlocking()) {
+            categoryEntries.add(backupCategory(category))
+        }
+
+        return root
+    }
+
+    /**
+     * Backups a manga and its related data (chapters, categories this manga is in, sync...).
+     *
+     * @param manga the manga to backup.
+     * @return a JSON object containing all the data of the manga.
+     */
+    private fun backupManga(manga: Manga): JsonObject {
+        // Entry for this manga
+        val entry = JsonObject()
+
+        // Backup manga fields
+        entry.add(MANGA, gson.toJsonTree(manga))
+
+        // Backup all the chapters
+        val chapters = db.getChapters(manga).executeAsBlocking()
+        if (!chapters.isEmpty()) {
+            entry.add(CHAPTERS, gson.toJsonTree(chapters))
+        }
+
+        // Backup manga sync
+        val mangaSync = db.getMangasSync(manga).executeAsBlocking()
+        if (!mangaSync.isEmpty()) {
+            entry.add(MANGA_SYNC, gson.toJsonTree(mangaSync))
+        }
+
+        // Backup categories for this manga
+        val categoriesForManga = db.getCategoriesForManga(manga).executeAsBlocking()
+        if (!categoriesForManga.isEmpty()) {
+            val categoriesNames = ArrayList<String>()
+            for (category in categoriesForManga) {
+                categoriesNames.add(category.name)
+            }
+            entry.add(CATEGORIES, gson.toJsonTree(categoriesNames))
+        }
+
+        return entry
+    }
+
+    /**
+     * Backups a category.
+     *
+     * @param category the category to backup.
+     * @return a JSON object containing the data of the category.
+     */
+    private fun backupCategory(category: Category): JsonElement {
+        return gson.toJsonTree(category)
+    }
+
+    /**
+     * Restores a backup from a file.
+     *
+     * @param file the file containing the backup.
+     * @throws IOException if there's any IO error.
+     */
+    @Throws(IOException::class)
+    fun restoreFromFile(file: File) {
+        JsonReader(FileReader(file)).use {
+            val root = JsonParser().parse(it).asJsonObject
+            restoreFromJson(root)
+        }
+    }
+
+    /**
+     * Restores a backup from an input stream.
+     *
+     * @param stream the stream containing the backup.
+     * @throws IOException if there's any IO error.
+     */
+    @Throws(IOException::class)
+    fun restoreFromStream(stream: InputStream) {
+        JsonReader(InputStreamReader(stream)).use {
+            val root = JsonParser().parse(it).asJsonObject
+            restoreFromJson(root)
+        }
+    }
+
+    /**
+     * Restores a backup from a JSON object. Everything executes in a single transaction so that
+     * nothing is modified if there's an error.
+     *
+     * @param root the root of the JSON.
+     */
+    fun restoreFromJson(root: JsonObject) {
+        db.inTransaction {
+            // Restore categories
+            root.get(CATEGORIES)?.let {
+                restoreCategories(it.asJsonArray)
+            }
+
+            // Restore mangas
+            root.get(MANGAS)?.let {
+                restoreMangas(it.asJsonArray)
+            }
+        }
+    }
+
+    /**
+     * Restores the categories.
+     *
+     * @param jsonCategories the categories of the json.
+     */
+    private fun restoreCategories(jsonCategories: JsonArray) {
+        // Get categories from file and from db
+        val dbCategories = db.getCategories().executeAsBlocking()
+        val backupCategories = gson.fromJson<List<CategoryImpl>>(jsonCategories)
+
+        // Iterate over them
+        for (category in backupCategories) {
+            // Used to know if the category is already in the db
+            var found = false
+            for (dbCategory in dbCategories) {
+                // If the category is already in the db, assign the id to the file's category
+                // and do nothing
+                if (category.nameLower == dbCategory.nameLower) {
+                    category.id = dbCategory.id
+                    found = true
+                    break
+                }
+            }
+            // If the category isn't in the db, remove the id and insert a new category
+            // Store the inserted id in the category
+            if (!found) {
+                // Let the db assign the id
+                category.id = null
+                val result = db.insertCategory(category).executeAsBlocking()
+                category.id = result.insertedId()?.toInt()
+            }
+        }
+    }
+
+    /**
+     * Restores all the mangas and its related data.
+     *
+     * @param jsonMangas the mangas and its related data (chapters, sync, categories) from the json.
+     */
+    private fun restoreMangas(jsonMangas: JsonArray) {
+        for (backupManga in jsonMangas) {
+            // Map every entry to objects
+            val element = backupManga.asJsonObject
+            val manga = gson.fromJson(element.get(MANGA), MangaImpl::class.java)
+            val chapters = gson.fromJson<List<ChapterImpl>>(element.get(CHAPTERS) ?: JsonArray())
+            val sync = gson.fromJson<List<MangaSyncImpl>>(element.get(MANGA_SYNC) ?: JsonArray())
+            val categories = gson.fromJson<List<String>>(element.get(CATEGORIES) ?: JsonArray())
+
+            // Restore everything related to this manga
+            restoreManga(manga)
+            restoreChaptersForManga(manga, chapters)
+            restoreSyncForManga(manga, sync)
+            restoreCategoriesForManga(manga, categories)
+        }
+    }
+
+    /**
+     * Restores a manga.
+     *
+     * @param manga the manga to restore.
+     */
+    private fun restoreManga(manga: Manga) {
+        // Try to find existing manga in db
+        val dbManga = db.getManga(manga.url, manga.source).executeAsBlocking()
+        if (dbManga == null) {
+            // Let the db assign the id
+            manga.id = null
+            val result = db.insertManga(manga).executeAsBlocking()
+            manga.id = result.insertedId()
+        } else {
+            // If it exists already, we copy only the values related to the source from the db
+            // (they can be up to date). Local values (flags) are kept from the backup.
+            manga.id = dbManga.id
+            manga.copyFrom(dbManga)
+            manga.favorite = true
+            db.insertManga(manga).executeAsBlocking()
+        }
+    }
+
+    /**
+     * Restores the chapters of a manga.
+     *
+     * @param manga the manga whose chapters have to be restored.
+     * @param chapters the chapters to restore.
+     */
+    private fun restoreChaptersForManga(manga: Manga, chapters: List<Chapter>) {
+        // Fix foreign keys with the current manga id
+        for (chapter in chapters) {
+            chapter.manga_id = manga.id
+        }
+
+        val dbChapters = db.getChapters(manga).executeAsBlocking()
+        val chaptersToUpdate = ArrayList<Chapter>()
+        for (backupChapter in chapters) {
+            // Try to find existing chapter in db
+            val pos = dbChapters.indexOf(backupChapter)
+            if (pos != -1) {
+                // The chapter is already in the db, only update its fields
+                val dbChapter = dbChapters[pos]
+                // If one of them was read, the chapter will be marked as read
+                dbChapter.read = backupChapter.read || dbChapter.read
+                dbChapter.last_page_read = Math.max(backupChapter.last_page_read, dbChapter.last_page_read)
+                chaptersToUpdate.add(dbChapter)
+            } else {
+                // Insert new chapter. Let the db assign the id
+                backupChapter.id = null
+                chaptersToUpdate.add(backupChapter)
+            }
+        }
+
+        // Update database
+        if (!chaptersToUpdate.isEmpty()) {
+            db.insertChapters(chaptersToUpdate).executeAsBlocking()
+        }
+    }
+
+    /**
+     * Restores the categories a manga is in.
+     *
+     * @param manga the manga whose categories have to be restored.
+     * @param categories the categories to restore.
+     */
+    private fun restoreCategoriesForManga(manga: Manga, categories: List<String>) {
+        val dbCategories = db.getCategories().executeAsBlocking()
+        val mangaCategoriesToUpdate = ArrayList<MangaCategory>()
+        for (backupCategoryStr in categories) {
+            for (dbCategory in dbCategories) {
+                if (backupCategoryStr.toLowerCase() == dbCategory.nameLower) {
+                    mangaCategoriesToUpdate.add(MangaCategory.create(manga, dbCategory))
+                    break
+                }
+            }
+        }
+
+        // Update database
+        if (!mangaCategoriesToUpdate.isEmpty()) {
+            val mangaAsList = ArrayList<Manga>()
+            mangaAsList.add(manga)
+            db.deleteOldMangasCategories(mangaAsList).executeAsBlocking()
+            db.insertMangasCategories(mangaCategoriesToUpdate).executeAsBlocking()
+        }
+    }
+
+    /**
+     * Restores the sync of a manga.
+     *
+     * @param manga the manga whose sync have to be restored.
+     * @param sync the sync to restore.
+     */
+    private fun restoreSyncForManga(manga: Manga, sync: List<MangaSync>) {
+        // Fix foreign keys with the current manga id
+        for (mangaSync in sync) {
+            mangaSync.manga_id = manga.id!!
+        }
+
+        val dbSyncs = db.getMangasSync(manga).executeAsBlocking()
+        val syncToUpdate = ArrayList<MangaSync>()
+        for (backupSync in sync) {
+            // Try to find existing chapter in db
+            val pos = dbSyncs.indexOf(backupSync)
+            if (pos != -1) {
+                // The sync is already in the db, only update its fields
+                val dbSync = dbSyncs[pos]
+                // Mark the max chapter as read and nothing else
+                dbSync.last_chapter_read = Math.max(backupSync.last_chapter_read, dbSync.last_chapter_read)
+                syncToUpdate.add(dbSync)
+            } else {
+                // Insert new sync. Let the db assign the id
+                backupSync.id = null
+                syncToUpdate.add(backupSync)
+            }
+        }
+
+        // Update database
+        if (!syncToUpdate.isEmpty()) {
+            db.insertMangasSync(syncToUpdate).executeAsBlocking()
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/IdExclusion.kt

@@ -0,0 +1,27 @@
+package eu.kanade.tachiyomi.data.backup.serializer
+
+import com.google.gson.ExclusionStrategy
+import com.google.gson.FieldAttributes
+import eu.kanade.tachiyomi.data.database.models.Category
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.database.models.MangaSync
+
+class IdExclusion : ExclusionStrategy {
+
+    private val categoryExclusions = listOf("id")
+    private val mangaExclusions = listOf("id")
+    private val chapterExclusions = listOf("id", "manga_id")
+    private val syncExclusions = listOf("id", "manga_id", "update")
+
+    override fun shouldSkipField(f: FieldAttributes) = when (f.declaringClass) {
+        Manga::class.java -> mangaExclusions.contains(f.name)
+        Chapter::class.java -> chapterExclusions.contains(f.name)
+        MangaSync::class.java -> syncExclusions.contains(f.name)
+        Category::class.java -> categoryExclusions.contains(f.name)
+        else -> false
+    }
+
+    override fun shouldSkipClass(clazz: Class<*>) = false
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/backup/serializer/IntegerSerializer.kt

@@ -0,0 +1,17 @@
+package eu.kanade.tachiyomi.data.backup.serializer
+
+import com.google.gson.JsonElement
+import com.google.gson.JsonPrimitive
+import com.google.gson.JsonSerializationContext
+import com.google.gson.JsonSerializer
+
+import java.lang.reflect.Type
+
+class IntegerSerializer : JsonSerializer<Int> {
+
+    override fun serialize(value: Int?, type: Type, context: JsonSerializationContext): JsonElement? {
+        if (value != null && value !== 0)
+            return JsonPrimitive(value)
+        return null
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/cache/ChapterCache.java

@@ -1,197 +0,0 @@
-package eu.kanade.tachiyomi.data.cache;
-
-import android.content.Context;
-import android.text.format.Formatter;
-
-import com.google.gson.Gson;
-import com.google.gson.reflect.TypeToken;
-import com.jakewharton.disklrucache.DiskLruCache;
-import com.squareup.okhttp.Response;
-
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.lang.reflect.Type;
-import java.util.List;
-
-import eu.kanade.tachiyomi.data.source.model.Page;
-import eu.kanade.tachiyomi.util.DiskUtils;
-import okio.BufferedSink;
-import okio.Okio;
-import rx.Observable;
-
-public class ChapterCache {
-
-    private static final String PARAMETER_CACHE_DIRECTORY = "chapter_disk_cache";
-    private static final int PARAMETER_APP_VERSION = 1;
-    private static final int PARAMETER_VALUE_COUNT = 1;
-    private static final int PARAMETER_CACHE_SIZE = 75 * 1024 * 1024;
-
-    private Context context;
-    private Gson gson;
-
-    private DiskLruCache diskCache;
-
-    public ChapterCache(Context context) {
-        this.context = context;
-        gson = new Gson();
-
-        try {
-            diskCache = DiskLruCache.open(
-                    new File(context.getCacheDir(), PARAMETER_CACHE_DIRECTORY),
-                    PARAMETER_APP_VERSION,
-                    PARAMETER_VALUE_COUNT,
-                    PARAMETER_CACHE_SIZE
-            );
-        } catch (IOException e) {
-            // Do Nothing.
-        }
-    }
-
-    public boolean remove(String file) {
-        if (file.equals("journal") || file.startsWith("journal."))
-            return false;
-
-        try {
-            String key = file.substring(0, file.lastIndexOf("."));
-            return diskCache.remove(key);
-        } catch (IOException e) {
-            return false;
-        }
-    }
-
-    public File getCacheDir() {
-        return diskCache.getDirectory();
-    }
-
-    public long getRealSize() {
-        return DiskUtils.getDirectorySize(getCacheDir());
-    }
-
-    public String getReadableSize() {
-        return Formatter.formatFileSize(context, getRealSize());
-    }
-
-    public void setSize(int value) {
-        diskCache.setMaxSize(value * 1024 * 1024);
-    }
-
-    public Observable<List<Page>> getPageUrlsFromDiskCache(final String chapterUrl) {
-        return Observable.create(subscriber -> {
-            try {
-                List<Page> pages = getPageUrlsFromDiskCacheImpl(chapterUrl);
-                subscriber.onNext(pages);
-                subscriber.onCompleted();
-            } catch (Throwable e) {
-                subscriber.onError(e);
-            }
-        });
-    }
-
-    private List<Page> getPageUrlsFromDiskCacheImpl(String chapterUrl) throws IOException {
-        DiskLruCache.Snapshot snapshot = null;
-        List<Page> pages = null;
-
-        try {
-            String key = DiskUtils.hashKeyForDisk(chapterUrl);
-            snapshot = diskCache.get(key);
-
-            Type collectionType = new TypeToken<List<Page>>() {}.getType();
-            pages = gson.fromJson(snapshot.getString(0), collectionType);
-        } catch (IOException e) {
-            // Do Nothing.
-        } finally {
-            if (snapshot != null) {
-                snapshot.close();
-            }
-        }
-        return pages;
-    }
-
-    public void putPageUrlsToDiskCache(final String chapterUrl, final List<Page> pages) {
-        String cachedValue = gson.toJson(pages);
-
-        DiskLruCache.Editor editor = null;
-        OutputStream outputStream = null;
-        try {
-            String key = DiskUtils.hashKeyForDisk(chapterUrl);
-            editor = diskCache.edit(key);
-            if (editor == null) {
-                return;
-            }
-
-            outputStream = new BufferedOutputStream(editor.newOutputStream(0));
-            outputStream.write(cachedValue.getBytes());
-            outputStream.flush();
-
-            diskCache.flush();
-            editor.commit();
-        } catch (Exception e) {
-            // Do Nothing.
-        } finally {
-            if (editor != null) {
-                editor.abortUnlessCommitted();
-            }
-            if (outputStream != null) {
-                try {
-                    outputStream.close();
-                } catch (IOException ignore) {
-                    // Do Nothing.
-                }
-            }
-        }
-    }
-
-    public boolean isImageInCache(final String imageUrl) {
-        try {
-            return diskCache.get(DiskUtils.hashKeyForDisk(imageUrl)) != null;
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        return false;
-    }
-
-    public String getImagePath(final String imageUrl) {
-        try {
-            String imageName = DiskUtils.hashKeyForDisk(imageUrl) + ".0";
-            File file = new File(diskCache.getDirectory(), imageName);
-            return file.getCanonicalPath();
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        return null;
-    }
-
-    public void putImageToDiskCache(final String imageUrl, final Response response) throws IOException {
-        DiskLruCache.Editor editor = null;
-        BufferedSink sink = null;
-
-        try {
-            String key = DiskUtils.hashKeyForDisk(imageUrl);
-            editor = diskCache.edit(key);
-            if (editor == null) {
-                throw new IOException("Unable to edit key");
-            }
-
-            OutputStream outputStream = new BufferedOutputStream(editor.newOutputStream(0));
-            sink = Okio.buffer(Okio.sink(outputStream));
-            sink.writeAll(response.body().source());
-
-            diskCache.flush();
-            editor.commit();
-        } catch (Exception e) {
-            throw new IOException("Unable to save image");
-        } finally {
-            if (editor != null) {
-                editor.abortUnlessCommitted();
-            }
-            if (sink != null) {
-                sink.close();
-            }
-        }
-
-    }
-
-}
-

app/src/main/java/eu/kanade/tachiyomi/data/cache/ChapterCache.kt

@@ -0,0 +1,209 @@
+package eu.kanade.tachiyomi.data.cache
+
+import android.content.Context
+import android.text.format.Formatter
+import com.google.gson.Gson
+import com.google.gson.reflect.TypeToken
+import com.jakewharton.disklrucache.DiskLruCache
+import eu.kanade.tachiyomi.data.source.model.Page
+import eu.kanade.tachiyomi.util.DiskUtils
+import eu.kanade.tachiyomi.util.saveImageTo
+import okhttp3.Response
+import okio.Okio
+import rx.Observable
+import java.io.File
+import java.io.IOException
+import java.lang.reflect.Type
+
+/**
+ * Class used to create chapter cache
+ * For each image in a chapter a file is created
+ * For each chapter a Json list is created and converted to a file.
+ * The files are in format *md5key*.0
+ *
+ * @param context the application context.
+ * @constructor creates an instance of the chapter cache.
+ */
+class ChapterCache(private val context: Context) {
+
+    /** Google Json class used for parsing JSON files.  */
+    private val gson: Gson = Gson()
+
+    /** Cache class used for cache management.  */
+    private val diskCache: DiskLruCache
+
+    /** Page list collection used for deserializing from JSON.  */
+    private val pageListCollection: Type = object : TypeToken<List<Page>>() {}.type
+
+    companion object {
+        /** Name of cache directory.  */
+        const val PARAMETER_CACHE_DIRECTORY = "chapter_disk_cache"
+
+        /** Application cache version.  */
+        const val PARAMETER_APP_VERSION = 1
+
+        /** The number of values per cache entry. Must be positive.  */
+        const val PARAMETER_VALUE_COUNT = 1
+
+        /** The maximum number of bytes this cache should use to store.  */
+        const val PARAMETER_CACHE_SIZE = 75L * 1024 * 1024
+    }
+
+    init {
+        // Open cache in default cache directory.
+        diskCache = DiskLruCache.open(
+                File(context.cacheDir, PARAMETER_CACHE_DIRECTORY),
+                PARAMETER_APP_VERSION,
+                PARAMETER_VALUE_COUNT,
+                PARAMETER_CACHE_SIZE)
+    }
+
+    /**
+     * Returns directory of cache.
+     * @return directory of cache.
+     */
+    val cacheDir: File
+        get() = diskCache.directory
+
+    /**
+     * Returns real size of directory.
+     * @return real size of directory.
+     */
+    private val realSize: Long
+        get() = DiskUtils.getDirectorySize(cacheDir)
+
+    /**
+     * Returns real size of directory in human readable format.
+     * @return real size of directory.
+     */
+    val readableSize: String
+        get() = Formatter.formatFileSize(context, realSize)
+
+    /**
+     * Remove file from cache.
+     * @param file name of file "md5.0".
+     * @return status of deletion for the file.
+     */
+    fun removeFileFromCache(file: String): Boolean {
+        // Make sure we don't delete the journal file (keeps track of cache).
+        if (file == "journal" || file.startsWith("journal."))
+            return false
+
+        try {
+            // Remove the extension from the file to get the key of the cache
+            val key = file.substring(0, file.lastIndexOf("."))
+            // Remove file from cache.
+            return diskCache.remove(key)
+        } catch (e: IOException) {
+            return false
+        }
+    }
+
+    /**
+     * Get page list from cache.
+     * @param chapterUrl the url of the chapter.
+     * @return an observable of the list of pages.
+     */
+    fun getPageListFromCache(chapterUrl: String): Observable<List<Page>> {
+        return Observable.fromCallable<List<Page>> {
+            // Get the key for the chapter.
+            val key = DiskUtils.hashKeyForDisk(chapterUrl)
+
+            // Convert JSON string to list of objects. Throws an exception if snapshot is null
+            diskCache.get(key).use {
+                gson.fromJson(it.getString(0), pageListCollection)
+            }
+        }
+    }
+
+    /**
+     * Add page list to disk cache.
+     * @param chapterUrl the url of the chapter.
+     * @param pages list of pages.
+     */
+    fun putPageListToCache(chapterUrl: String, pages: List<Page>) {
+        // Convert list of pages to json string.
+        val cachedValue = gson.toJson(pages)
+
+        // Initialize the editor (edits the values for an entry).
+        var editor: DiskLruCache.Editor? = null
+
+        try {
+            // Get editor from md5 key.
+            val key = DiskUtils.hashKeyForDisk(chapterUrl)
+            editor = diskCache.edit(key) ?: return
+
+            // Write chapter urls to cache.
+            Okio.buffer(Okio.sink(editor.newOutputStream(0))).use {
+                it.write(cachedValue.toByteArray())
+                it.flush()
+            }
+
+            diskCache.flush()
+            editor.commit()
+            editor.abortUnlessCommitted()
+
+        } catch (e: Exception) {
+            // Ignore.
+        } finally {
+            editor?.abortUnlessCommitted()
+        }
+    }
+
+    /**
+     * Check if image is in cache.
+     * @param imageUrl url of image.
+     * @return true if in cache otherwise false.
+     */
+    fun isImageInCache(imageUrl: String): Boolean {
+        try {
+            return diskCache.get(DiskUtils.hashKeyForDisk(imageUrl)) != null
+        } catch (e: IOException) {
+            return false
+        }
+    }
+
+    /**
+     * Get image path from url.
+     * @param imageUrl url of image.
+     * @return path of image.
+     */
+    fun getImagePath(imageUrl: String): String? {
+        try {
+            // Get file from md5 key.
+            val imageName = DiskUtils.hashKeyForDisk(imageUrl) + ".0"
+            return File(diskCache.directory, imageName).canonicalPath
+        } catch (e: IOException) {
+            return null
+        }
+    }
+
+    /**
+     * Add image to cache.
+     * @param imageUrl url of image.
+     * @param response http response from page.
+     * @throws IOException image error.
+     */
+    @Throws(IOException::class)
+    fun putImageToCache(imageUrl: String, response: Response, reencode: Boolean) {
+        // Initialize editor (edits the values for an entry).
+        var editor: DiskLruCache.Editor? = null
+
+        try {
+            // Get editor from md5 key.
+            val key = DiskUtils.hashKeyForDisk(imageUrl)
+            editor = diskCache.edit(key) ?: throw IOException("Unable to edit key")
+
+            // Get OutputStream and write image with Okio.
+            response.body().source().saveImageTo(editor.newOutputStream(0), reencode)
+
+            diskCache.flush()
+            editor.commit()
+        } finally {
+            response.body().close()
+            editor?.abortUnlessCommitted()
+        }
+    }
+
+}
+

app/src/main/java/eu/kanade/tachiyomi/data/cache/CoverCache.java

@@ -1,148 +0,0 @@
-package eu.kanade.tachiyomi.data.cache;
-
-import android.content.Context;
-import android.text.TextUtils;
-import android.widget.ImageView;
-
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.load.engine.DiskCacheStrategy;
-import com.bumptech.glide.load.model.GlideUrl;
-import com.bumptech.glide.load.model.LazyHeaders;
-import com.bumptech.glide.request.animation.GlideAnimation;
-import com.bumptech.glide.request.target.SimpleTarget;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-import eu.kanade.tachiyomi.util.DiskUtils;
-
-public class CoverCache {
-
-    private static final String PARAMETER_CACHE_DIRECTORY = "cover_disk_cache";
-
-    private Context context;
-    private File cacheDir;
-
-    public CoverCache(Context context) {
-        this.context = context;
-        cacheDir = new File(context.getCacheDir(), PARAMETER_CACHE_DIRECTORY);
-        createCacheDir();
-    }
-
-    private boolean createCacheDir() {
-        return !cacheDir.exists() && cacheDir.mkdirs();
-    }
-
-    public void save(String thumbnailUrl, LazyHeaders headers) {
-        save(thumbnailUrl, headers, null);
-    }
-
-    // Download the cover with Glide (it can avoid repeating requests) and save the file on this cache
-    // Optionally, load the image in the given image view when the resource is ready, if not null
-    public void save(String thumbnailUrl, LazyHeaders headers, ImageView imageView) {
-        if (TextUtils.isEmpty(thumbnailUrl))
-            return;
-
-        GlideUrl url = new GlideUrl(thumbnailUrl, headers);
-        Glide.with(context)
-                .load(url)
-                .downloadOnly(new SimpleTarget<File>() {
-                    @Override
-                    public void onResourceReady(File resource, GlideAnimation<? super File> anim) {
-                        try {
-                            add(thumbnailUrl, resource);
-                            if (imageView != null) {
-                                loadFromCache(imageView, resource);
-                            }
-                        } catch (IOException e) {
-                            e.printStackTrace();
-                        }
-                    }
-                });
-    }
-
-    // Copy the cover from Glide's cache to this cache
-    public void add(String thumbnailUrl, File source) throws IOException {
-        createCacheDir();
-        File dest = new File(cacheDir, DiskUtils.hashKeyForDisk(thumbnailUrl));
-        if (dest.exists())
-            dest.delete();
-
-        InputStream in = new FileInputStream(source);
-        try {
-            OutputStream out = new FileOutputStream(dest);
-            try {
-                // Transfer bytes from in to out
-                byte[] buf = new byte[1024];
-                int len;
-                while ((len = in.read(buf)) > 0) {
-                    out.write(buf, 0, len);
-                }
-            } finally {
-                out.close();
-            }
-        } finally {
-            in.close();
-        }
-    }
-
-    // Get the cover from cache
-    public File get(String thumbnailUrl) {
-        return new File(cacheDir, DiskUtils.hashKeyForDisk(thumbnailUrl));
-    }
-
-    // Delete the cover from cache
-    public boolean delete(String thumbnailUrl) {
-        if (TextUtils.isEmpty(thumbnailUrl))
-            return false;
-
-        File file = new File(cacheDir, DiskUtils.hashKeyForDisk(thumbnailUrl));
-        return file.exists() && file.delete();
-    }
-
-    // Save and load the image from cache
-    public void saveAndLoadFromCache(ImageView imageView, String thumbnailUrl, LazyHeaders headers) {
-        File localCover = get(thumbnailUrl);
-        if (localCover.exists()) {
-            loadFromCache(imageView, localCover);
-        } else {
-            save(thumbnailUrl, headers, imageView);
-        }
-    }
-
-    // If the image is already in our cache, use it. If not, load it with glide
-    public void loadFromCacheOrNetwork(ImageView imageView, String thumbnailUrl, LazyHeaders headers) {
-        File localCover = get(thumbnailUrl);
-        if (localCover.exists()) {
-            loadFromCache(imageView, localCover);
-        } else {
-            loadFromNetwork(imageView, thumbnailUrl, headers);
-        }
-    }
-
-    // Helper method to load the cover from the cache directory into the specified image view
-    // The file must exist
-    private void loadFromCache(ImageView imageView, File file) {
-        Glide.with(context)
-                .load(file)
-                .diskCacheStrategy(DiskCacheStrategy.NONE)
-                .centerCrop()
-                .into(imageView);
-    }
-
-    // Helper method to load the cover from network into the specified image view.
-    // It does NOT save the image in cache
-    public void loadFromNetwork(ImageView imageView, String thumbnailUrl, LazyHeaders headers) {
-        GlideUrl url = new GlideUrl(thumbnailUrl, headers);
-        Glide.with(context)
-                .load(url)
-                .diskCacheStrategy(DiskCacheStrategy.SOURCE)
-                .centerCrop()
-                .into(imageView);
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/cache/CoverCache.kt

@@ -0,0 +1,66 @@
+package eu.kanade.tachiyomi.data.cache
+
+import android.content.Context
+import eu.kanade.tachiyomi.util.DiskUtils
+import java.io.File
+import java.io.IOException
+import java.io.InputStream
+
+/**
+ * Class used to create cover cache.
+ * It is used to store the covers of the library.
+ * Makes use of Glide (which can avoid repeating requests) to download covers.
+ * Names of files are created with the md5 of the thumbnail URL.
+ *
+ * @param context the application context.
+ * @constructor creates an instance of the cover cache.
+ */
+class CoverCache(private val context: Context) {
+
+    /**
+     * Cache directory used for cache management.
+     */
+    private val cacheDir: File = File(context.externalCacheDir, "cover_disk_cache")
+
+    /**
+     * Returns the cover from cache.
+     *
+     * @param thumbnailUrl the thumbnail url.
+     * @return cover image.
+     */
+    fun getCoverFile(thumbnailUrl: String): File {
+        return File(cacheDir, DiskUtils.hashKeyForDisk(thumbnailUrl))
+    }
+
+    /**
+     * Copy the given stream to this cache.
+     *
+     * @param thumbnailUrl url of the thumbnail.
+     * @param inputStream  the stream to copy.
+     * @throws IOException if there's any error.
+     */
+    @Throws(IOException::class)
+    fun copyToCache(thumbnailUrl: String, inputStream: InputStream) {
+        // Get destination file.
+        val destFile = getCoverFile(thumbnailUrl)
+
+        destFile.outputStream().use { inputStream.copyTo(it) }
+    }
+
+    /**
+     * Delete the cover file from the cache.
+     *
+     * @param thumbnailUrl the thumbnail url.
+     * @return status of deletion.
+     */
+    fun deleteFromCache(thumbnailUrl: String?): Boolean {
+        // Check if url is empty.
+        if (thumbnailUrl.isNullOrEmpty())
+            return false
+
+        // Remove file.
+        val file = getCoverFile(thumbnailUrl!!)
+        return file.exists() && file.delete()
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/cache/CoverGlideModule.java

@@ -1,21 +0,0 @@
-package eu.kanade.tachiyomi.data.cache;
-
-import android.content.Context;
-
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.GlideBuilder;
-import com.bumptech.glide.load.DecodeFormat;
-import com.bumptech.glide.module.GlideModule;
-
-public class CoverGlideModule implements GlideModule {
-
-    @Override
-    public void applyOptions(Context context, GlideBuilder builder) {
-        builder.setDecodeFormat(DecodeFormat.PREFER_ARGB_8888);
-    }
-
-    @Override
-    public void registerComponents(Context context, Glide glide) {
-
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/DatabaseHelper.java

@@ -1,415 +0,0 @@
-package eu.kanade.tachiyomi.data.database;
-
-import android.content.Context;
-import android.util.Pair;
-
-import com.pushtorefresh.storio.Queries;
-import com.pushtorefresh.storio.sqlite.StorIOSQLite;
-import com.pushtorefresh.storio.sqlite.impl.DefaultStorIOSQLite;
-import com.pushtorefresh.storio.sqlite.operations.delete.PreparedDeleteByQuery;
-import com.pushtorefresh.storio.sqlite.operations.delete.PreparedDeleteCollectionOfObjects;
-import com.pushtorefresh.storio.sqlite.operations.delete.PreparedDeleteObject;
-import com.pushtorefresh.storio.sqlite.operations.get.PreparedGetListOfObjects;
-import com.pushtorefresh.storio.sqlite.operations.get.PreparedGetObject;
-import com.pushtorefresh.storio.sqlite.operations.put.PreparedPutCollectionOfObjects;
-import com.pushtorefresh.storio.sqlite.operations.put.PreparedPutObject;
-import com.pushtorefresh.storio.sqlite.queries.DeleteQuery;
-import com.pushtorefresh.storio.sqlite.queries.Query;
-import com.pushtorefresh.storio.sqlite.queries.RawQuery;
-
-import java.util.Date;
-import java.util.List;
-
-import eu.kanade.tachiyomi.data.database.models.Category;
-import eu.kanade.tachiyomi.data.database.models.CategorySQLiteTypeMapping;
-import eu.kanade.tachiyomi.data.database.models.Chapter;
-import eu.kanade.tachiyomi.data.database.models.ChapterSQLiteTypeMapping;
-import eu.kanade.tachiyomi.data.database.models.Manga;
-import eu.kanade.tachiyomi.data.database.models.MangaCategory;
-import eu.kanade.tachiyomi.data.database.models.MangaCategorySQLiteTypeMapping;
-import eu.kanade.tachiyomi.data.database.models.MangaSQLiteTypeMapping;
-import eu.kanade.tachiyomi.data.database.models.MangaSync;
-import eu.kanade.tachiyomi.data.database.models.MangaSyncSQLiteTypeMapping;
-import eu.kanade.tachiyomi.data.database.resolvers.LibraryMangaGetResolver;
-import eu.kanade.tachiyomi.data.database.tables.CategoryTable;
-import eu.kanade.tachiyomi.data.database.tables.ChapterTable;
-import eu.kanade.tachiyomi.data.database.tables.MangaCategoryTable;
-import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable;
-import eu.kanade.tachiyomi.data.database.tables.MangaTable;
-import eu.kanade.tachiyomi.data.mangasync.base.MangaSyncService;
-import eu.kanade.tachiyomi.util.ChapterRecognition;
-import rx.Observable;
-
-public class DatabaseHelper {
-
-    private StorIOSQLite db;
-
-    public DatabaseHelper(Context context) {
-
-        db = DefaultStorIOSQLite.builder()
-                .sqliteOpenHelper(new DbOpenHelper(context))
-                .addTypeMapping(Manga.class, new MangaSQLiteTypeMapping())
-                .addTypeMapping(Chapter.class, new ChapterSQLiteTypeMapping())
-                .addTypeMapping(MangaSync.class, new MangaSyncSQLiteTypeMapping())
-                .addTypeMapping(Category.class, new CategorySQLiteTypeMapping())
-                .addTypeMapping(MangaCategory.class, new MangaCategorySQLiteTypeMapping())
-                .build();
-    }
-
-    // Mangas related queries
-
-    public PreparedGetListOfObjects<Manga> getMangas() {
-        return db.get()
-                .listOfObjects(Manga.class)
-                .withQuery(Query.builder()
-                        .table(MangaTable.TABLE)
-                        .build())
-                .prepare();
-    }
-
-    public PreparedGetListOfObjects<Manga> getLibraryMangas() {
-        return db.get()
-                .listOfObjects(Manga.class)
-                .withQuery(RawQuery.builder()
-                        .query(LibraryMangaGetResolver.QUERY)
-                        .observesTables(MangaTable.TABLE, ChapterTable.TABLE, MangaCategoryTable.TABLE)
-                        .build())
-                .withGetResolver(LibraryMangaGetResolver.INSTANCE)
-                .prepare();
-    }
-
-    public PreparedGetListOfObjects<Manga> getFavoriteMangas() {
-        return db.get()
-                .listOfObjects(Manga.class)
-                .withQuery(Query.builder()
-                        .table(MangaTable.TABLE)
-                        .where(MangaTable.COLUMN_FAVORITE + "=?")
-                        .whereArgs(1)
-                        .orderBy(MangaTable.COLUMN_TITLE)
-                        .build())
-                .prepare();
-    }
-
-    public PreparedGetObject<Manga> getManga(String url, int sourceId) {
-        return db.get()
-                .object(Manga.class)
-                .withQuery(Query.builder()
-                        .table(MangaTable.TABLE)
-                        .where(MangaTable.COLUMN_URL + "=? AND " + MangaTable.COLUMN_SOURCE + "=?")
-                        .whereArgs(url, sourceId)
-                        .build())
-                .prepare();
-    }
-
-    public PreparedGetObject<Manga> getManga(long id) {
-        return db.get()
-                .object(Manga.class)
-                .withQuery(Query.builder()
-                        .table(MangaTable.TABLE)
-                        .where(MangaTable.COLUMN_ID + "=?")
-                        .whereArgs(id)
-                        .build())
-                .prepare();
-    }
-
-    public PreparedPutObject<Manga> insertManga(Manga manga) {
-        return db.put()
-                .object(manga)
-                .prepare();
-    }
-
-    public PreparedPutCollectionOfObjects<Manga> insertMangas(List<Manga> mangas) {
-        return db.put()
-                .objects(mangas)
-                .prepare();
-    }
-
-    public PreparedDeleteObject<Manga> deleteManga(Manga manga) {
-        return db.delete()
-                .object(manga)
-                .prepare();
-    }
-
-    public PreparedDeleteCollectionOfObjects<Manga> deleteMangas(List<Manga> mangas) {
-        return db.delete()
-                .objects(mangas)
-                .prepare();
-    }
-
-    public PreparedDeleteByQuery deleteMangasNotInLibrary() {
-        return db.delete()
-                .byQuery(DeleteQuery.builder()
-                        .table(MangaTable.TABLE)
-                        .where(MangaTable.COLUMN_FAVORITE + "=?")
-                        .whereArgs(0)
-                        .build())
-                .prepare();
-    }
-
-
-    // Chapters related queries
-
-    public PreparedGetListOfObjects<Chapter> getChapters(Manga manga) {
-        return db.get()
-                .listOfObjects(Chapter.class)
-                .withQuery(Query.builder()
-                        .table(ChapterTable.TABLE)
-                        .where(ChapterTable.COLUMN_MANGA_ID + "=?")
-                        .whereArgs(manga.id)
-                        .build())
-                .prepare();
-    }
-
-    public PreparedGetListOfObjects<Chapter> getChapters(long manga_id, boolean sortAToZ, boolean onlyUnread) {
-        Query.CompleteBuilder query = Query.builder()
-                .table(ChapterTable.TABLE)
-
-                .orderBy(ChapterTable.COLUMN_CHAPTER_NUMBER + (sortAToZ ? " ASC" : " DESC"));
-
-        if (onlyUnread) {
-            query = query.where(ChapterTable.COLUMN_MANGA_ID + "=? AND " + ChapterTable.COLUMN_READ + "=?")
-                    .whereArgs(manga_id, 0);
-        } else {
-            query = query.where(ChapterTable.COLUMN_MANGA_ID + "=?")
-                    .whereArgs(manga_id);
-        }
-
-        return db.get()
-                .listOfObjects(Chapter.class)
-                .withQuery(query.build())
-                .prepare();
-    }
-
-    public PreparedGetObject<Chapter> getNextChapter(Chapter chapter) {
-        // Add a delta to the chapter number, because binary decimal representation
-        // can retrieve the same chapter again
-        double chapterNumber = chapter.chapter_number + 0.00001;
-
-        return db.get()
-                .object(Chapter.class)
-                .withQuery(Query.builder()
-                        .table(ChapterTable.TABLE)
-                        .where(ChapterTable.COLUMN_MANGA_ID + "=? AND " +
-                                ChapterTable.COLUMN_CHAPTER_NUMBER + ">? AND " +
-                                ChapterTable.COLUMN_CHAPTER_NUMBER + "<=?")
-                        .whereArgs(chapter.manga_id, chapterNumber, chapterNumber + 1)
-                        .orderBy(ChapterTable.COLUMN_CHAPTER_NUMBER)
-                        .limit(1)
-                        .build())
-                .prepare();
-    }
-
-    public PreparedGetObject<Chapter> getPreviousChapter(Chapter chapter) {
-        // Add a delta to the chapter number, because binary decimal representation
-        // can retrieve the same chapter again
-        double chapterNumber = chapter.chapter_number - 0.00001;
-
-        return db.get()
-                .object(Chapter.class)
-                .withQuery(Query.builder()
-                        .table(ChapterTable.TABLE)
-                        .where(ChapterTable.COLUMN_MANGA_ID + "=? AND " +
-                                ChapterTable.COLUMN_CHAPTER_NUMBER + "<? AND " +
-                                ChapterTable.COLUMN_CHAPTER_NUMBER + ">=?")
-                        .whereArgs(chapter.manga_id, chapterNumber, chapterNumber - 1)
-                        .orderBy(ChapterTable.COLUMN_CHAPTER_NUMBER + " DESC")
-                        .limit(1)
-                        .build())
-                .prepare();
-    }
-
-    public PreparedGetObject<Chapter> getNextUnreadChapter(Manga manga) {
-        return db.get()
-                .object(Chapter.class)
-                .withQuery(Query.builder()
-                        .table(ChapterTable.TABLE)
-                        .where(ChapterTable.COLUMN_MANGA_ID + "=? AND " +
-                                ChapterTable.COLUMN_READ + "=? AND " +
-                                ChapterTable.COLUMN_CHAPTER_NUMBER + ">=?")
-                        .whereArgs(manga.id, 0, 0)
-                        .orderBy(ChapterTable.COLUMN_CHAPTER_NUMBER)
-                        .limit(1)
-                        .build())
-                .prepare();
-    }
-
-    public PreparedPutObject<Chapter> insertChapter(Chapter chapter) {
-        return db.put()
-                .object(chapter)
-                .prepare();
-    }
-
-    public PreparedPutCollectionOfObjects<Chapter> insertChapters(List<Chapter> chapters) {
-        return db.put()
-                .objects(chapters)
-                .prepare();
-    }
-
-    // Add new chapters or delete if the source deletes them
-    public Observable<Pair<Integer, Integer>> insertOrRemoveChapters(Manga manga, List<Chapter> sourceChapters) {
-        List<Chapter> dbChapters = getChapters(manga).executeAsBlocking();
-
-        Observable<List<Chapter>> newChapters = Observable.from(sourceChapters)
-                .filter(c -> !dbChapters.contains(c))
-                .doOnNext(c -> {
-                    c.manga_id = manga.id;
-                    ChapterRecognition.parseChapterNumber(c, manga);
-                })
-                .toList();
-
-        Observable<List<Chapter>> deletedChapters = Observable.from(dbChapters)
-                .filter(c -> !sourceChapters.contains(c))
-                .toList();
-
-        return Observable.zip(newChapters, deletedChapters, (toAdd, toDelete) -> {
-            int added = 0;
-            int deleted = 0;
-            db.internal().beginTransaction();
-            try {
-                if (!toAdd.isEmpty()) {
-                    // Set the date fetch for new items in reverse order to allow another sorting method.
-                    // Sources MUST return the chapters from most to less recent, which is common.
-                    long now = new Date().getTime();
-
-                    for (int i = toAdd.size() - 1; i >= 0; i--) {
-                        toAdd.get(i).date_fetch = now++;
-                    }
-                    added = insertChapters(toAdd).executeAsBlocking().numberOfInserts();
-                }
-
-                if (!toDelete.isEmpty()) {
-                    deleted = deleteChapters(toDelete).executeAsBlocking().results().size();
-                }
-
-                db.internal().setTransactionSuccessful();
-            } finally {
-                db.internal().endTransaction();
-            }
-            return Pair.create(added, deleted);
-        });
-    }
-
-    public PreparedDeleteObject<Chapter> deleteChapter(Chapter chapter) {
-        return db.delete()
-                .object(chapter)
-                .prepare();
-    }
-
-    public PreparedDeleteCollectionOfObjects<Chapter> deleteChapters(List<Chapter> chapters) {
-        return db.delete()
-                .objects(chapters)
-                .prepare();
-    }
-
-    // Manga sync related queries
-
-    public PreparedGetObject<MangaSync> getMangaSync(Manga manga, MangaSyncService sync) {
-        return db.get()
-                .object(MangaSync.class)
-                .withQuery(Query.builder()
-                        .table(MangaSyncTable.TABLE)
-                        .where(MangaSyncTable.COLUMN_MANGA_ID + "=? AND " +
-                                MangaSyncTable.COLUMN_SYNC_ID + "=?")
-                        .whereArgs(manga.id, sync.getId())
-                        .build())
-                .prepare();
-    }
-
-    public PreparedGetListOfObjects<MangaSync> getMangasSync(Manga manga) {
-        return db.get()
-                .listOfObjects(MangaSync.class)
-                .withQuery(Query.builder()
-                        .table(MangaSyncTable.TABLE)
-                        .where(MangaSyncTable.COLUMN_MANGA_ID + "=?")
-                        .whereArgs(manga.id)
-                        .build())
-                .prepare();
-    }
-
-    public PreparedPutObject<MangaSync> insertMangaSync(MangaSync manga) {
-        return db.put()
-                .object(manga)
-                .prepare();
-    }
-
-    public PreparedDeleteObject<MangaSync> deleteMangaSync(MangaSync manga) {
-        return db.delete()
-                .object(manga)
-                .prepare();
-    }
-
-    // Categories related queries
-
-    public PreparedGetListOfObjects<Category> getCategories() {
-        return db.get()
-                .listOfObjects(Category.class)
-                .withQuery(Query.builder()
-                        .table(CategoryTable.TABLE)
-                        .orderBy(CategoryTable.COLUMN_ORDER)
-                        .build())
-                .prepare();
-    }
-
-    public PreparedPutObject<Category> insertCategory(Category category) {
-        return db.put()
-                .object(category)
-                .prepare();
-    }
-
-    public PreparedPutCollectionOfObjects<Category> insertCategories(List<Category> categories) {
-        return db.put()
-                .objects(categories)
-                .prepare();
-    }
-
-    public PreparedDeleteObject<Category> deleteCategory(Category category) {
-        return db.delete()
-                .object(category)
-                .prepare();
-    }
-
-    public PreparedDeleteCollectionOfObjects<Category> deleteCategories(List<Category> categories) {
-        return db.delete()
-                .objects(categories)
-                .prepare();
-    }
-
-    public PreparedPutObject<MangaCategory> insertMangaCategory(MangaCategory mangaCategory) {
-        return db.put()
-                .object(mangaCategory)
-                .prepare();
-    }
-
-    public PreparedPutCollectionOfObjects<MangaCategory> insertMangasCategories(List<MangaCategory> mangasCategories) {
-        return db.put()
-                .objects(mangasCategories)
-                .prepare();
-    }
-
-    public PreparedDeleteByQuery deleteOldMangasCategories(List<Manga> mangas) {
-        List<Long> mangaIds = Observable.from(mangas)
-                .map(manga -> manga.id)
-                .toList().toBlocking().single();
-
-        return db.delete()
-                .byQuery(DeleteQuery.builder()
-                        .table(MangaCategoryTable.TABLE)
-                        .where(MangaCategoryTable.COLUMN_MANGA_ID + " IN ("
-                                + Queries.placeholders(mangas.size()) + ")")
-                        .whereArgs(mangaIds.toArray())
-                        .build())
-                .prepare();
-    }
-
-    public void setMangaCategories(List<MangaCategory> mangasCategories, List<Manga> mangas) {
-        db.internal().beginTransaction();
-        try {
-            deleteOldMangasCategories(mangas).executeAsBlocking();
-            insertMangasCategories(mangasCategories).executeAsBlocking();
-            db.internal().setTransactionSuccessful();
-        } finally {
-            db.internal().endTransaction();
-        }
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/DatabaseHelper.kt

@@ -0,0 +1,27 @@
+package eu.kanade.tachiyomi.data.database
+
+import android.content.Context
+import com.pushtorefresh.storio.sqlite.impl.DefaultStorIOSQLite
+import eu.kanade.tachiyomi.data.database.mappers.*
+import eu.kanade.tachiyomi.data.database.models.*
+import eu.kanade.tachiyomi.data.database.queries.*
+
+/**
+ * This class provides operations to manage the database through its interfaces.
+ */
+open class DatabaseHelper(context: Context)
+: MangaQueries, ChapterQueries, MangaSyncQueries, CategoryQueries, MangaCategoryQueries, HistoryQueries {
+
+    override val db = DefaultStorIOSQLite.builder()
+            .sqliteOpenHelper(DbOpenHelper(context))
+            .addTypeMapping(Manga::class.java, MangaTypeMapping())
+            .addTypeMapping(Chapter::class.java, ChapterTypeMapping())
+            .addTypeMapping(MangaSync::class.java, MangaSyncTypeMapping())
+            .addTypeMapping(Category::class.java, CategoryTypeMapping())
+            .addTypeMapping(MangaCategory::class.java, MangaCategoryTypeMapping())
+            .addTypeMapping(History::class.java, HistoryTypeMapping())
+            .build()
+
+    inline fun inTransaction(block: () -> Unit) = db.inTransaction(block)
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/DbExtensions.kt

@@ -0,0 +1,25 @@
+package eu.kanade.tachiyomi.data.database
+
+import com.pushtorefresh.storio.sqlite.StorIOSQLite
+
+inline fun StorIOSQLite.inTransaction(block: () -> Unit) {
+    lowLevel().beginTransaction()
+    try {
+        block()
+        lowLevel().setTransactionSuccessful()
+    } finally {
+        lowLevel().endTransaction()
+    }
+}
+
+inline fun <T> StorIOSQLite.inTransactionReturn(block: () -> T): T {
+    lowLevel().beginTransaction()
+    try {
+        val result = block()
+        lowLevel().setTransactionSuccessful()
+        return result
+    } finally {
+        lowLevel().endTransaction()
+    }
+}
+

app/src/main/java/eu/kanade/tachiyomi/data/database/DbOpenHelper.java

@@ -1,47 +0,0 @@
-package eu.kanade.tachiyomi.data.database;
-
-import android.content.Context;
-import android.database.sqlite.SQLiteDatabase;
-import android.database.sqlite.SQLiteOpenHelper;
-import android.support.annotation.NonNull;
-
-import eu.kanade.tachiyomi.data.database.tables.CategoryTable;
-import eu.kanade.tachiyomi.data.database.tables.MangaCategoryTable;
-import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable;
-import eu.kanade.tachiyomi.data.database.tables.ChapterTable;
-import eu.kanade.tachiyomi.data.database.tables.MangaTable;
-
-public class DbOpenHelper extends SQLiteOpenHelper {
-
-    public static final String DATABASE_NAME = "tachiyomi.db";
-    public static final int DATABASE_VERSION = 1;
-
-    public DbOpenHelper(@NonNull Context context) {
-        super(context, DATABASE_NAME, null, DATABASE_VERSION);
-    }
-
-    @Override
-    public void onCreate(@NonNull SQLiteDatabase db) {
-        db.execSQL(MangaTable.getCreateTableQuery());
-        db.execSQL(ChapterTable.getCreateTableQuery());
-        db.execSQL(MangaSyncTable.getCreateTableQuery());
-        db.execSQL(CategoryTable.getCreateTableQuery());
-        db.execSQL(MangaCategoryTable.getCreateTableQuery());
-
-        // DB indexes
-        db.execSQL(MangaTable.getCreateUrlIndexQuery());
-        db.execSQL(MangaTable.getCreateFavoriteIndexQuery());
-        db.execSQL(ChapterTable.getCreateMangaIdIndexQuery());
-    }
-
-    @Override
-    public void onUpgrade(@NonNull SQLiteDatabase db, int oldVersion, int newVersion) {
-
-    }
-
-    @Override
-    public void onConfigure(@NonNull SQLiteDatabase db) {
-        db.setForeignKeyConstraintsEnabled(true);
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/DbOpenHelper.kt

@@ -0,0 +1,57 @@
+package eu.kanade.tachiyomi.data.database
+
+import android.content.Context
+import android.database.sqlite.SQLiteDatabase
+import android.database.sqlite.SQLiteOpenHelper
+import eu.kanade.tachiyomi.data.database.tables.*
+
+class DbOpenHelper(context: Context)
+: SQLiteOpenHelper(context, DATABASE_NAME, null, DATABASE_VERSION) {
+
+    companion object {
+        /**
+         * Name of the database file.
+         */
+        const val DATABASE_NAME = "tachiyomi.db"
+
+        /**
+         * Version of the database.
+         */
+        const val DATABASE_VERSION = 3
+    }
+
+    override fun onCreate(db: SQLiteDatabase) = with(db) {
+        execSQL(MangaTable.createTableQuery)
+        execSQL(ChapterTable.createTableQuery)
+        execSQL(MangaSyncTable.createTableQuery)
+        execSQL(CategoryTable.createTableQuery)
+        execSQL(MangaCategoryTable.createTableQuery)
+        execSQL(HistoryTable.createTableQuery)
+
+        // DB indexes
+        execSQL(MangaTable.createUrlIndexQuery)
+        execSQL(MangaTable.createFavoriteIndexQuery)
+        execSQL(ChapterTable.createMangaIdIndexQuery)
+        execSQL(HistoryTable.createChapterIdIndexQuery)
+    }
+
+    override fun onUpgrade(db: SQLiteDatabase, oldVersion: Int, newVersion: Int) {
+        if (oldVersion < 2) {
+            db.execSQL(ChapterTable.sourceOrderUpdateQuery)
+
+            // Fix kissmanga covers after supporting cloudflare
+            db.execSQL("""UPDATE mangas SET thumbnail_url =
+                    REPLACE(thumbnail_url, '93.174.95.110', 'kissmanga.com') WHERE source = 4""")
+        }
+        if (oldVersion < 3) {
+            // Initialize history tables
+            db.execSQL(HistoryTable.createTableQuery)
+            db.execSQL(HistoryTable.createChapterIdIndexQuery)
+        }
+    }
+
+    override fun onConfigure(db: SQLiteDatabase) {
+        db.setForeignKeyConstraintsEnabled(true)
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/DbProvider.kt

@@ -0,0 +1,9 @@
+package eu.kanade.tachiyomi.data.database
+
+import com.pushtorefresh.storio.sqlite.impl.DefaultStorIOSQLite
+
+interface DbProvider {
+
+    val db: DefaultStorIOSQLite
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/mappers/CategoryTypeMapping.kt

@@ -0,0 +1,63 @@
+package eu.kanade.tachiyomi.data.database.mappers
+
+import android.content.ContentValues
+import android.database.Cursor
+import com.pushtorefresh.storio.sqlite.SQLiteTypeMapping
+import com.pushtorefresh.storio.sqlite.operations.delete.DefaultDeleteResolver
+import com.pushtorefresh.storio.sqlite.operations.get.DefaultGetResolver
+import com.pushtorefresh.storio.sqlite.operations.put.DefaultPutResolver
+import com.pushtorefresh.storio.sqlite.queries.DeleteQuery
+import com.pushtorefresh.storio.sqlite.queries.InsertQuery
+import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
+import eu.kanade.tachiyomi.data.database.models.Category
+import eu.kanade.tachiyomi.data.database.models.CategoryImpl
+import eu.kanade.tachiyomi.data.database.tables.CategoryTable.COL_FLAGS
+import eu.kanade.tachiyomi.data.database.tables.CategoryTable.COL_ID
+import eu.kanade.tachiyomi.data.database.tables.CategoryTable.COL_NAME
+import eu.kanade.tachiyomi.data.database.tables.CategoryTable.COL_ORDER
+import eu.kanade.tachiyomi.data.database.tables.CategoryTable.TABLE
+
+class CategoryTypeMapping : SQLiteTypeMapping<Category>(
+        CategoryPutResolver(),
+        CategoryGetResolver(),
+        CategoryDeleteResolver()
+)
+
+class CategoryPutResolver : DefaultPutResolver<Category>() {
+
+    override fun mapToInsertQuery(obj: Category) = InsertQuery.builder()
+            .table(TABLE)
+            .build()
+
+    override fun mapToUpdateQuery(obj: Category) = UpdateQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+
+    override fun mapToContentValues(obj: Category) = ContentValues(4).apply {
+        put(COL_ID, obj.id)
+        put(COL_NAME, obj.name)
+        put(COL_ORDER, obj.order)
+        put(COL_FLAGS, obj.flags)
+    }
+}
+
+class CategoryGetResolver : DefaultGetResolver<Category>() {
+
+    override fun mapFromCursor(cursor: Cursor): Category = CategoryImpl().apply {
+        id = cursor.getInt(cursor.getColumnIndex(COL_ID))
+        name = cursor.getString(cursor.getColumnIndex(COL_NAME))
+        order = cursor.getInt(cursor.getColumnIndex(COL_ORDER))
+        flags = cursor.getInt(cursor.getColumnIndex(COL_FLAGS))
+    }
+}
+
+class CategoryDeleteResolver : DefaultDeleteResolver<Category>() {
+
+    override fun mapToDeleteQuery(obj: Category) = DeleteQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/mappers/ChapterTypeMapping.kt

@@ -0,0 +1,82 @@
+package eu.kanade.tachiyomi.data.database.mappers
+
+import android.content.ContentValues
+import android.database.Cursor
+import com.pushtorefresh.storio.sqlite.SQLiteTypeMapping
+import com.pushtorefresh.storio.sqlite.operations.delete.DefaultDeleteResolver
+import com.pushtorefresh.storio.sqlite.operations.get.DefaultGetResolver
+import com.pushtorefresh.storio.sqlite.operations.put.DefaultPutResolver
+import com.pushtorefresh.storio.sqlite.queries.DeleteQuery
+import com.pushtorefresh.storio.sqlite.queries.InsertQuery
+import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.models.ChapterImpl
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_CHAPTER_NUMBER
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_DATE_FETCH
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_DATE_UPLOAD
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_ID
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_LAST_PAGE_READ
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_MANGA_ID
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_NAME
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_READ
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_SOURCE_ORDER
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.COL_URL
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable.TABLE
+
+class ChapterTypeMapping : SQLiteTypeMapping<Chapter>(
+        ChapterPutResolver(),
+        ChapterGetResolver(),
+        ChapterDeleteResolver()
+)
+
+class ChapterPutResolver : DefaultPutResolver<Chapter>() {
+
+    override fun mapToInsertQuery(obj: Chapter) = InsertQuery.builder()
+            .table(TABLE)
+            .build()
+
+    override fun mapToUpdateQuery(obj: Chapter) = UpdateQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+
+    override fun mapToContentValues(obj: Chapter) = ContentValues(10).apply {
+        put(COL_ID, obj.id)
+        put(COL_MANGA_ID, obj.manga_id)
+        put(COL_URL, obj.url)
+        put(COL_NAME, obj.name)
+        put(COL_READ, obj.read)
+        put(COL_DATE_FETCH, obj.date_fetch)
+        put(COL_DATE_UPLOAD, obj.date_upload)
+        put(COL_LAST_PAGE_READ, obj.last_page_read)
+        put(COL_CHAPTER_NUMBER, obj.chapter_number)
+        put(COL_SOURCE_ORDER, obj.source_order)
+    }
+}
+
+class ChapterGetResolver : DefaultGetResolver<Chapter>() {
+
+    override fun mapFromCursor(cursor: Cursor): Chapter = ChapterImpl().apply {
+        id = cursor.getLong(cursor.getColumnIndex(COL_ID))
+        manga_id = cursor.getLong(cursor.getColumnIndex(COL_MANGA_ID))
+        url = cursor.getString(cursor.getColumnIndex(COL_URL))
+        name = cursor.getString(cursor.getColumnIndex(COL_NAME))
+        read = cursor.getInt(cursor.getColumnIndex(COL_READ)) == 1
+        date_fetch = cursor.getLong(cursor.getColumnIndex(COL_DATE_FETCH))
+        date_upload = cursor.getLong(cursor.getColumnIndex(COL_DATE_UPLOAD))
+        last_page_read = cursor.getInt(cursor.getColumnIndex(COL_LAST_PAGE_READ))
+        chapter_number = cursor.getFloat(cursor.getColumnIndex(COL_CHAPTER_NUMBER))
+        source_order = cursor.getInt(cursor.getColumnIndex(COL_SOURCE_ORDER))
+    }
+}
+
+class ChapterDeleteResolver : DefaultDeleteResolver<Chapter>() {
+
+    override fun mapToDeleteQuery(obj: Chapter) = DeleteQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+}
+

app/src/main/java/eu/kanade/tachiyomi/data/database/mappers/HistoryTypeMapping.kt

@@ -0,0 +1,62 @@
+package eu.kanade.tachiyomi.data.database.mappers
+
+import android.content.ContentValues
+import android.database.Cursor
+import com.pushtorefresh.storio.sqlite.SQLiteTypeMapping
+import com.pushtorefresh.storio.sqlite.operations.delete.DefaultDeleteResolver
+import com.pushtorefresh.storio.sqlite.operations.get.DefaultGetResolver
+import com.pushtorefresh.storio.sqlite.operations.put.DefaultPutResolver
+import com.pushtorefresh.storio.sqlite.queries.DeleteQuery
+import com.pushtorefresh.storio.sqlite.queries.InsertQuery
+import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
+import eu.kanade.tachiyomi.data.database.models.History
+import eu.kanade.tachiyomi.data.database.tables.HistoryTable.COL_CHAPTER_ID
+import eu.kanade.tachiyomi.data.database.tables.HistoryTable.COL_ID
+import eu.kanade.tachiyomi.data.database.tables.HistoryTable.COL_LAST_READ
+import eu.kanade.tachiyomi.data.database.tables.HistoryTable.COL_TIME_READ
+import eu.kanade.tachiyomi.data.database.tables.HistoryTable.TABLE
+
+class HistoryTypeMapping : SQLiteTypeMapping<History>(
+        HistoryPutResolver(),
+        HistoryGetResolver(),
+        HistoryDeleteResolver()
+)
+
+open class HistoryPutResolver : DefaultPutResolver<History>() {
+
+    override fun mapToInsertQuery(obj: History) = InsertQuery.builder()
+            .table(TABLE)
+            .build()
+
+    override fun mapToUpdateQuery(obj: History) = UpdateQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+
+    override fun mapToContentValues(obj: History) = ContentValues(4).apply {
+        put(COL_ID, obj.id)
+        put(COL_CHAPTER_ID, obj.chapter_id)
+        put(COL_LAST_READ, obj.last_read)
+        put(COL_TIME_READ, obj.time_read)
+    }
+}
+
+class HistoryGetResolver : DefaultGetResolver<History>() {
+
+    override fun mapFromCursor(cursor: Cursor): History = History().apply {
+        id = cursor.getLong(cursor.getColumnIndex(COL_ID))
+        chapter_id = cursor.getLong(cursor.getColumnIndex(COL_CHAPTER_ID))
+        last_read = cursor.getLong(cursor.getColumnIndex(COL_LAST_READ))
+        time_read = cursor.getLong(cursor.getColumnIndex(COL_TIME_READ))
+    }
+}
+
+class HistoryDeleteResolver : DefaultDeleteResolver<History>() {
+
+    override fun mapToDeleteQuery(obj: History) = DeleteQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/mappers/MangaCategoryTypeMapping.kt

@@ -0,0 +1,59 @@
+package eu.kanade.tachiyomi.data.database.mappers
+
+import android.content.ContentValues
+import android.database.Cursor
+import com.pushtorefresh.storio.sqlite.SQLiteTypeMapping
+import com.pushtorefresh.storio.sqlite.operations.delete.DefaultDeleteResolver
+import com.pushtorefresh.storio.sqlite.operations.get.DefaultGetResolver
+import com.pushtorefresh.storio.sqlite.operations.put.DefaultPutResolver
+import com.pushtorefresh.storio.sqlite.queries.DeleteQuery
+import com.pushtorefresh.storio.sqlite.queries.InsertQuery
+import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
+import eu.kanade.tachiyomi.data.database.models.MangaCategory
+import eu.kanade.tachiyomi.data.database.tables.MangaCategoryTable.COL_CATEGORY_ID
+import eu.kanade.tachiyomi.data.database.tables.MangaCategoryTable.COL_ID
+import eu.kanade.tachiyomi.data.database.tables.MangaCategoryTable.COL_MANGA_ID
+import eu.kanade.tachiyomi.data.database.tables.MangaCategoryTable.TABLE
+
+class MangaCategoryTypeMapping : SQLiteTypeMapping<MangaCategory>(
+        MangaCategoryPutResolver(),
+        MangaCategoryGetResolver(),
+        MangaCategoryDeleteResolver()
+)
+
+class MangaCategoryPutResolver : DefaultPutResolver<MangaCategory>() {
+
+    override fun mapToInsertQuery(obj: MangaCategory) = InsertQuery.builder()
+            .table(TABLE)
+            .build()
+
+    override fun mapToUpdateQuery(obj: MangaCategory) = UpdateQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+
+    override fun mapToContentValues(obj: MangaCategory) = ContentValues(3).apply {
+        put(COL_ID, obj.id)
+        put(COL_MANGA_ID, obj.manga_id)
+        put(COL_CATEGORY_ID, obj.category_id)
+    }
+}
+
+class MangaCategoryGetResolver : DefaultGetResolver<MangaCategory>() {
+
+    override fun mapFromCursor(cursor: Cursor): MangaCategory = MangaCategory().apply {
+        id = cursor.getLong(cursor.getColumnIndex(COL_ID))
+        manga_id = cursor.getLong(cursor.getColumnIndex(COL_MANGA_ID))
+        category_id = cursor.getInt(cursor.getColumnIndex(COL_CATEGORY_ID))
+    }
+}
+
+class MangaCategoryDeleteResolver : DefaultDeleteResolver<MangaCategory>() {
+
+    override fun mapToDeleteQuery(obj: MangaCategory) = DeleteQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/mappers/MangaSyncTypeMapping.kt

@@ -0,0 +1,78 @@
+package eu.kanade.tachiyomi.data.database.mappers
+
+import android.content.ContentValues
+import android.database.Cursor
+import com.pushtorefresh.storio.sqlite.SQLiteTypeMapping
+import com.pushtorefresh.storio.sqlite.operations.delete.DefaultDeleteResolver
+import com.pushtorefresh.storio.sqlite.operations.get.DefaultGetResolver
+import com.pushtorefresh.storio.sqlite.operations.put.DefaultPutResolver
+import com.pushtorefresh.storio.sqlite.queries.DeleteQuery
+import com.pushtorefresh.storio.sqlite.queries.InsertQuery
+import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
+import eu.kanade.tachiyomi.data.database.models.MangaSync
+import eu.kanade.tachiyomi.data.database.models.MangaSyncImpl
+import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable.COL_ID
+import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable.COL_LAST_CHAPTER_READ
+import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable.COL_MANGA_ID
+import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable.COL_REMOTE_ID
+import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable.COL_SCORE
+import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable.COL_STATUS
+import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable.COL_SYNC_ID
+import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable.COL_TITLE
+import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable.COL_TOTAL_CHAPTERS
+import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable.TABLE
+
+class MangaSyncTypeMapping : SQLiteTypeMapping<MangaSync>(
+        MangaSyncPutResolver(),
+        MangaSyncGetResolver(),
+        MangaSyncDeleteResolver()
+)
+
+class MangaSyncPutResolver : DefaultPutResolver<MangaSync>() {
+
+    override fun mapToInsertQuery(obj: MangaSync) = InsertQuery.builder()
+            .table(TABLE)
+            .build()
+
+    override fun mapToUpdateQuery(obj: MangaSync) = UpdateQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+
+    override fun mapToContentValues(obj: MangaSync) = ContentValues(9).apply {
+        put(COL_ID, obj.id)
+        put(COL_MANGA_ID, obj.manga_id)
+        put(COL_SYNC_ID, obj.sync_id)
+        put(COL_REMOTE_ID, obj.remote_id)
+        put(COL_TITLE, obj.title)
+        put(COL_LAST_CHAPTER_READ, obj.last_chapter_read)
+        put(COL_TOTAL_CHAPTERS, obj.total_chapters)
+        put(COL_STATUS, obj.status)
+        put(COL_SCORE, obj.score)
+    }
+}
+
+class MangaSyncGetResolver : DefaultGetResolver<MangaSync>() {
+
+    override fun mapFromCursor(cursor: Cursor): MangaSync = MangaSyncImpl().apply {
+        id = cursor.getLong(cursor.getColumnIndex(COL_ID))
+        manga_id = cursor.getLong(cursor.getColumnIndex(COL_MANGA_ID))
+        sync_id = cursor.getInt(cursor.getColumnIndex(COL_SYNC_ID))
+        remote_id = cursor.getInt(cursor.getColumnIndex(COL_REMOTE_ID))
+        title = cursor.getString(cursor.getColumnIndex(COL_TITLE))
+        last_chapter_read = cursor.getInt(cursor.getColumnIndex(COL_LAST_CHAPTER_READ))
+        total_chapters = cursor.getInt(cursor.getColumnIndex(COL_TOTAL_CHAPTERS))
+        status = cursor.getInt(cursor.getColumnIndex(COL_STATUS))
+        score = cursor.getFloat(cursor.getColumnIndex(COL_SCORE))
+    }
+}
+
+class MangaSyncDeleteResolver : DefaultDeleteResolver<MangaSync>() {
+
+    override fun mapToDeleteQuery(obj: MangaSync) = DeleteQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/mappers/MangaTypeMapping.kt

@@ -0,0 +1,96 @@
+package eu.kanade.tachiyomi.data.database.mappers
+
+import android.content.ContentValues
+import android.database.Cursor
+import com.pushtorefresh.storio.sqlite.SQLiteTypeMapping
+import com.pushtorefresh.storio.sqlite.operations.delete.DefaultDeleteResolver
+import com.pushtorefresh.storio.sqlite.operations.get.DefaultGetResolver
+import com.pushtorefresh.storio.sqlite.operations.put.DefaultPutResolver
+import com.pushtorefresh.storio.sqlite.queries.DeleteQuery
+import com.pushtorefresh.storio.sqlite.queries.InsertQuery
+import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.database.models.MangaImpl
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_ARTIST
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_AUTHOR
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_CHAPTER_FLAGS
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_DESCRIPTION
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_FAVORITE
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_GENRE
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_ID
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_INITIALIZED
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_LAST_UPDATE
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_SOURCE
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_STATUS
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_THUMBNAIL_URL
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_TITLE
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_URL
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.COL_VIEWER
+import eu.kanade.tachiyomi.data.database.tables.MangaTable.TABLE
+
+class MangaTypeMapping : SQLiteTypeMapping<Manga>(
+        MangaPutResolver(),
+        MangaGetResolver(),
+        MangaDeleteResolver()
+)
+
+class MangaPutResolver : DefaultPutResolver<Manga>() {
+
+    override fun mapToInsertQuery(obj: Manga) = InsertQuery.builder()
+            .table(TABLE)
+            .build()
+
+    override fun mapToUpdateQuery(obj: Manga) = UpdateQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+
+    override fun mapToContentValues(obj: Manga) = ContentValues(15).apply {
+        put(COL_ID, obj.id)
+        put(COL_SOURCE, obj.source)
+        put(COL_URL, obj.url)
+        put(COL_ARTIST, obj.artist)
+        put(COL_AUTHOR, obj.author)
+        put(COL_DESCRIPTION, obj.description)
+        put(COL_GENRE, obj.genre)
+        put(COL_TITLE, obj.title)
+        put(COL_STATUS, obj.status)
+        put(COL_THUMBNAIL_URL, obj.thumbnail_url)
+        put(COL_FAVORITE, obj.favorite)
+        put(COL_LAST_UPDATE, obj.last_update)
+        put(COL_INITIALIZED, obj.initialized)
+        put(COL_VIEWER, obj.viewer)
+        put(COL_CHAPTER_FLAGS, obj.chapter_flags)
+    }
+}
+
+open class MangaGetResolver : DefaultGetResolver<Manga>() {
+
+    override fun mapFromCursor(cursor: Cursor): Manga = MangaImpl().apply {
+        id = cursor.getLong(cursor.getColumnIndex(COL_ID))
+        source = cursor.getInt(cursor.getColumnIndex(COL_SOURCE))
+        url = cursor.getString(cursor.getColumnIndex(COL_URL))
+        artist = cursor.getString(cursor.getColumnIndex(COL_ARTIST))
+        author = cursor.getString(cursor.getColumnIndex(COL_AUTHOR))
+        description = cursor.getString(cursor.getColumnIndex(COL_DESCRIPTION))
+        genre = cursor.getString(cursor.getColumnIndex(COL_GENRE))
+        title = cursor.getString(cursor.getColumnIndex(COL_TITLE))
+        status = cursor.getInt(cursor.getColumnIndex(COL_STATUS))
+        thumbnail_url = cursor.getString(cursor.getColumnIndex(COL_THUMBNAIL_URL))
+        favorite = cursor.getInt(cursor.getColumnIndex(COL_FAVORITE)) == 1
+        last_update = cursor.getLong(cursor.getColumnIndex(COL_LAST_UPDATE))
+        initialized = cursor.getInt(cursor.getColumnIndex(COL_INITIALIZED)) == 1
+        viewer = cursor.getInt(cursor.getColumnIndex(COL_VIEWER))
+        chapter_flags = cursor.getInt(cursor.getColumnIndex(COL_CHAPTER_FLAGS))
+    }
+}
+
+class MangaDeleteResolver : DefaultDeleteResolver<Manga>() {
+
+    override fun mapToDeleteQuery(obj: Manga) = DeleteQuery.builder()
+            .table(TABLE)
+            .where("$COL_ID = ?")
+            .whereArgs(obj.id)
+            .build()
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/Category.java

@@ -1,38 +0,0 @@
-package eu.kanade.tachiyomi.data.database.models;
-
-import com.pushtorefresh.storio.sqlite.annotations.StorIOSQLiteColumn;
-import com.pushtorefresh.storio.sqlite.annotations.StorIOSQLiteType;
-
-import java.io.Serializable;
-
-import eu.kanade.tachiyomi.data.database.tables.CategoryTable;
-
-@StorIOSQLiteType(table = CategoryTable.TABLE)
-public class Category implements Serializable {
-
-    @StorIOSQLiteColumn(name = CategoryTable.COLUMN_ID, key = true)
-    public Integer id;
-
-    @StorIOSQLiteColumn(name = CategoryTable.COLUMN_NAME)
-    public String name;
-
-    @StorIOSQLiteColumn(name = CategoryTable.COLUMN_ORDER)
-    public int order;
-
-    @StorIOSQLiteColumn(name = CategoryTable.COLUMN_FLAGS)
-    public int flags;
-
-    public Category() {}
-
-    public static Category create(String name) {
-        Category c = new Category();
-        c.name = name;
-        return c;
-    }
-
-    public static Category createDefault() {
-        Category c = create("Default");
-        c.id = 0;
-        return c;
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/Category.kt

@@ -0,0 +1,27 @@
+package eu.kanade.tachiyomi.data.database.models
+
+import java.io.Serializable
+
+interface Category : Serializable {
+
+    var id: Int?
+
+    var name: String
+
+    var order: Int
+
+    var flags: Int
+
+    val nameLower: String
+        get() = name.toLowerCase()
+
+    companion object {
+
+        fun create(name: String): Category = CategoryImpl().apply {
+            this.name = name
+        }
+
+        fun createDefault(): Category = create("Default").apply { id = 0 }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/CategoryImpl.kt

@@ -0,0 +1,26 @@
+package eu.kanade.tachiyomi.data.database.models
+
+class CategoryImpl : Category {
+
+    override var id: Int? = null
+
+    override lateinit var name: String
+
+    override var order: Int = 0
+
+    override var flags: Int = 0
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other == null || javaClass != other.javaClass) return false
+
+        val category = other as Category
+
+        return name == category.name
+    }
+
+    override fun hashCode(): Int {
+        return name.hashCode()
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/Chapter.java

@@ -1,71 +0,0 @@
-package eu.kanade.tachiyomi.data.database.models;
-
-import com.pushtorefresh.storio.sqlite.annotations.StorIOSQLiteColumn;
-import com.pushtorefresh.storio.sqlite.annotations.StorIOSQLiteType;
-
-import java.io.Serializable;
-
-import eu.kanade.tachiyomi.data.database.tables.ChapterTable;
-import eu.kanade.tachiyomi.util.UrlUtil;
-
-@StorIOSQLiteType(table = ChapterTable.TABLE)
-public class Chapter implements Serializable {
-
-    @StorIOSQLiteColumn(name = ChapterTable.COLUMN_ID, key = true)
-    public Long id;
-
-    @StorIOSQLiteColumn(name = ChapterTable.COLUMN_MANGA_ID)
-    public Long manga_id;
-
-    @StorIOSQLiteColumn(name = ChapterTable.COLUMN_URL)
-    public String url;
-
-    @StorIOSQLiteColumn(name = ChapterTable.COLUMN_NAME)
-    public String name;
-
-    @StorIOSQLiteColumn(name = ChapterTable.COLUMN_READ)
-    public boolean read;
-
-    @StorIOSQLiteColumn(name = ChapterTable.COLUMN_LAST_PAGE_READ)
-    public int last_page_read;
-
-    @StorIOSQLiteColumn(name = ChapterTable.COLUMN_DATE_FETCH)
-    public long date_fetch;
-
-    @StorIOSQLiteColumn(name = ChapterTable.COLUMN_DATE_UPLOAD)
-    public long date_upload;
-
-    @StorIOSQLiteColumn(name = ChapterTable.COLUMN_CHAPTER_NUMBER)
-    public float chapter_number;
-
-    public int status;
-
-    public Chapter() {}
-
-    public void setUrl(String url) {
-        this.url = UrlUtil.getPath(url);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        Chapter chapter = (Chapter) o;
-
-        return url.equals(chapter.url);
-
-    }
-
-    @Override
-    public int hashCode() {
-        return url.hashCode();
-    }
-
-    public static Chapter create() {
-        Chapter chapter = new Chapter();
-        chapter.chapter_number = -1;
-        return chapter;
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/Chapter.kt

@@ -0,0 +1,36 @@
+package eu.kanade.tachiyomi.data.database.models
+
+import java.io.Serializable
+
+interface Chapter : Serializable {
+
+    var id: Long?
+
+    var manga_id: Long?
+
+    var url: String
+
+    var name: String
+
+    var read: Boolean
+
+    var last_page_read: Int
+
+    var date_fetch: Long
+
+    var date_upload: Long
+
+    var chapter_number: Float
+
+    var source_order: Int
+
+    val isRecognizedNumber: Boolean
+        get() = chapter_number >= 0f
+
+    companion object {
+
+        fun create(): Chapter = ChapterImpl().apply {
+            chapter_number = -1f
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/ChapterImpl.kt

@@ -0,0 +1,39 @@
+package eu.kanade.tachiyomi.data.database.models
+
+class ChapterImpl : Chapter {
+
+    override var id: Long? = null
+
+    override var manga_id: Long? = null
+
+    override lateinit var url: String
+
+    override lateinit var name: String
+
+    override var read: Boolean = false
+
+    override var last_page_read: Int = 0
+
+    override var date_fetch: Long = 0
+
+    override var date_upload: Long = 0
+
+    override var chapter_number: Float = 0f
+
+    override var source_order: Int = 0
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other == null || javaClass != other.javaClass) return false
+
+        val chapter = other as Chapter
+
+        return url == chapter.url
+
+    }
+
+    override fun hashCode(): Int {
+        return url.hashCode()
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/History.kt

@@ -0,0 +1,44 @@
+package eu.kanade.tachiyomi.data.database.models
+
+import java.io.Serializable
+
+/**
+ * Object containing the history statistics of a chapter
+ */
+class History : Serializable {
+
+    /**
+     * Id of history object.
+     */
+    var id: Long? = null
+
+    /**
+     * Chapter id of history object.
+     */
+    var chapter_id: Long = 0
+
+    /**
+     * Last time chapter was read in time long format
+     */
+    var last_read: Long = 0
+
+    /**
+     * Total time chapter was read - todo not yet implemented
+     */
+    var time_read: Long = 0
+
+    companion object {
+
+        /**
+         * History constructor
+         *
+         * @param chapter chapter object
+         * @return history object
+         */
+        fun create(chapter: Chapter): History {
+            val history = History()
+            history.chapter_id = chapter.id!!
+            return history
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/Manga.java

@@ -1,138 +0,0 @@
-package eu.kanade.tachiyomi.data.database.models;
-
-import android.content.Context;
-
-import com.pushtorefresh.storio.sqlite.annotations.StorIOSQLiteColumn;
-import com.pushtorefresh.storio.sqlite.annotations.StorIOSQLiteType;
-
-import java.io.Serializable;
-
-import eu.kanade.tachiyomi.R;
-import eu.kanade.tachiyomi.data.database.tables.MangaTable;
-import eu.kanade.tachiyomi.util.UrlUtil;
-
-@StorIOSQLiteType(table = MangaTable.TABLE)
-public class Manga implements Serializable {
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_ID, key = true)
-    public Long id;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_SOURCE)
-    public int source;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_URL)
-    public String url;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_ARTIST)
-    public String artist;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_AUTHOR)
-    public String author;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_DESCRIPTION)
-    public String description;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_GENRE)
-    public String genre;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_TITLE)
-    public String title;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_STATUS)
-    public int status;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_THUMBNAIL_URL)
-    public String thumbnail_url;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_FAVORITE)
-    public boolean favorite;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_LAST_UPDATE)
-    public long last_update;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_INITIALIZED)
-    public boolean initialized;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_VIEWER)
-    public int viewer;
-
-    @StorIOSQLiteColumn(name = MangaTable.COLUMN_CHAPTER_FLAGS)
-    public int chapter_flags;
-
-    public int unread;
-
-    public int category;
-
-    public static final int UNKNOWN = 0;
-    public static final int ONGOING = 1;
-    public static final int COMPLETED = 2;
-    public static final int LICENSED = 3;
-
-    public Manga() {}
-
-    public static Manga create(String pathUrl) {
-        Manga m = new Manga();
-        m.url = pathUrl;
-        return m;
-    }
-
-    public void setUrl(String url) {
-        this.url = UrlUtil.getPath(url);
-    }
-
-    public void copyFrom(Manga other) {
-        if (other.title != null)
-            title = other.title;
-
-        if (other.author != null)
-            author = other.author;
-
-        if (other.artist != null)
-            artist = other.artist;
-
-        if (other.url != null)
-            url = other.url;
-
-        if (other.description != null)
-            description = other.description;
-
-        if (other.genre != null)
-            genre = other.genre;
-
-        if (other.thumbnail_url != null)
-            thumbnail_url = other.thumbnail_url;
-
-        status = other.status;
-
-        initialized = true;
-    }
-
-    public String getStatus(Context context) {
-        switch (status) {
-            case ONGOING:
-                return context.getString(R.string.ongoing);
-            case COMPLETED:
-                return context.getString(R.string.completed);
-            case LICENSED:
-                return context.getString(R.string.licensed);
-            default:
-                return context.getString(R.string.unknown);
-        }
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        Manga manga = (Manga) o;
-
-        return url.equals(manga.url);
-
-    }
-
-    @Override
-    public int hashCode() {
-        return url.hashCode();
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/Manga.kt

@@ -0,0 +1,131 @@
+package eu.kanade.tachiyomi.data.database.models
+
+import java.io.Serializable
+
+interface Manga : Serializable {
+
+    var id: Long?
+
+    var source: Int
+
+    var url: String
+
+    var title: String
+
+    var artist: String?
+
+    var author: String?
+
+    var description: String?
+
+    var genre: String?
+
+    var status: Int
+
+    var thumbnail_url: String?
+
+    var favorite: Boolean
+
+    var last_update: Long
+
+    var initialized: Boolean
+
+    var viewer: Int
+
+    var chapter_flags: Int
+
+    var unread: Int
+
+    var category: Int
+
+    fun copyFrom(other: Manga) {
+        if (other.author != null)
+            author = other.author
+
+        if (other.artist != null)
+            artist = other.artist
+
+        if (other.description != null)
+            description = other.description
+
+        if (other.genre != null)
+            genre = other.genre
+
+        if (other.thumbnail_url != null)
+            thumbnail_url = other.thumbnail_url
+
+        status = other.status
+
+        initialized = true
+    }
+
+    fun setChapterOrder(order: Int) {
+        setFlags(order, SORT_MASK)
+    }
+
+    private fun setFlags(flag: Int, mask: Int) {
+        chapter_flags = chapter_flags and mask.inv() or (flag and mask)
+    }
+
+    fun sortDescending(): Boolean {
+        return chapter_flags and SORT_MASK == SORT_DESC
+    }
+
+    // Used to display the chapter's title one way or another
+    var displayMode: Int
+        get() = chapter_flags and DISPLAY_MASK
+        set(mode) = setFlags(mode, DISPLAY_MASK)
+
+    var readFilter: Int
+        get() = chapter_flags and READ_MASK
+        set(filter) = setFlags(filter, READ_MASK)
+
+    var downloadedFilter: Int
+        get() = chapter_flags and DOWNLOADED_MASK
+        set(filter) = setFlags(filter, DOWNLOADED_MASK)
+
+    var sorting: Int
+        get() = chapter_flags and SORTING_MASK
+        set(sort) = setFlags(sort, SORTING_MASK)
+
+    companion object {
+
+        const val UNKNOWN = 0
+        const val ONGOING = 1
+        const val COMPLETED = 2
+        const val LICENSED = 3
+
+        const val SORT_DESC = 0x00000000
+        const val SORT_ASC = 0x00000001
+        const val SORT_MASK = 0x00000001
+
+        // Generic filter that does not filter anything
+        const val SHOW_ALL = 0x00000000
+
+        const val SHOW_UNREAD = 0x00000002
+        const val SHOW_READ = 0x00000004
+        const val READ_MASK = 0x00000006
+
+        const val SHOW_DOWNLOADED = 0x00000008
+        const val SHOW_NOT_DOWNLOADED = 0x00000010
+        const val DOWNLOADED_MASK = 0x00000018
+
+        const val SORTING_SOURCE = 0x00000000
+        const val SORTING_NUMBER = 0x00000100
+        const val SORTING_MASK = 0x00000100
+
+        const val DISPLAY_NAME = 0x00000000
+        const val DISPLAY_NUMBER = 0x00100000
+        const val DISPLAY_MASK = 0x00100000
+
+        fun create(source: Int): Manga = MangaImpl().apply {
+            this.source = source
+        }
+
+        fun create(pathUrl: String, source: Int = 0): Manga = MangaImpl().apply {
+            url = pathUrl
+            this.source = source
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/MangaCategory.java

@@ -1,29 +0,0 @@
-package eu.kanade.tachiyomi.data.database.models;
-
-import com.pushtorefresh.storio.sqlite.annotations.StorIOSQLiteColumn;
-import com.pushtorefresh.storio.sqlite.annotations.StorIOSQLiteType;
-
-import eu.kanade.tachiyomi.data.database.tables.MangaCategoryTable;
-
-@StorIOSQLiteType(table = MangaCategoryTable.TABLE)
-public class MangaCategory {
-
-    @StorIOSQLiteColumn(name = MangaCategoryTable.COLUMN_ID, key = true)
-    public Long id;
-
-    @StorIOSQLiteColumn(name = MangaCategoryTable.COLUMN_MANGA_ID)
-    public long manga_id;
-
-    @StorIOSQLiteColumn(name = MangaCategoryTable.COLUMN_CATEGORY_ID)
-    public int category_id;
-
-    public MangaCategory() {}
-
-    public static MangaCategory create(Manga manga, Category category) {
-        MangaCategory mc = new MangaCategory();
-        mc.manga_id = manga.id;
-        mc.category_id = category.id;
-        return mc;
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/MangaCategory.kt

@@ -0,0 +1,21 @@
+package eu.kanade.tachiyomi.data.database.models
+
+class MangaCategory {
+
+    var id: Long? = null
+
+    var manga_id: Long = 0
+
+    var category_id: Int = 0
+
+    companion object {
+
+        fun create(manga: Manga, category: Category): MangaCategory {
+            val mc = MangaCategory()
+            mc.manga_id = manga.id!!
+            mc.category_id = category.id!!
+            return mc
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/MangaChapter.kt

@@ -0,0 +1,3 @@
+package eu.kanade.tachiyomi.data.database.models
+
+class MangaChapter(val manga: Manga, val chapter: Chapter)

app/src/main/java/eu/kanade/tachiyomi/data/database/models/MangaChapterHistory.kt

@@ -0,0 +1,10 @@
+package eu.kanade.tachiyomi.data.database.models
+
+/**
+ * Object containing manga, chapter and history
+ *
+ * @param manga object containing manga
+ * @param chapter object containing chater
+ * @param history      object containing history
+ */
+class MangaChapterHistory(val manga: Manga, val chapter: Chapter, val history: History)

app/src/main/java/eu/kanade/tachiyomi/data/database/models/MangaImpl.kt

@@ -0,0 +1,53 @@
+package eu.kanade.tachiyomi.data.database.models
+
+class MangaImpl : Manga {
+
+    override var id: Long? = null
+
+    override var source: Int = 0
+
+    override lateinit var url: String
+
+    override lateinit var title: String
+
+    override var artist: String? = null
+
+    override var author: String? = null
+
+    override var description: String? = null
+
+    override var genre: String? = null
+
+    override var status: Int = 0
+
+    override var thumbnail_url: String? = null
+
+    override var favorite: Boolean = false
+
+    override var last_update: Long = 0
+
+    override var initialized: Boolean = false
+
+    override var viewer: Int = 0
+
+    override var chapter_flags: Int = 0
+
+    @Transient override var unread: Int = 0
+
+    @Transient override var category: Int = 0
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other == null || javaClass != other.javaClass) return false
+
+        val manga = other as Manga
+
+        return url == manga.url
+
+    }
+
+    override fun hashCode(): Int {
+        return url.hashCode()
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/MangaSync.java

@@ -1,55 +0,0 @@
-package eu.kanade.tachiyomi.data.database.models;
-
-import com.pushtorefresh.storio.sqlite.annotations.StorIOSQLiteColumn;
-import com.pushtorefresh.storio.sqlite.annotations.StorIOSQLiteType;
-
-import java.io.Serializable;
-
-import eu.kanade.tachiyomi.data.mangasync.base.MangaSyncService;
-import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable;
-
-@StorIOSQLiteType(table = MangaSyncTable.TABLE)
-public class MangaSync implements Serializable {
-
-    @StorIOSQLiteColumn(name = MangaSyncTable.COLUMN_ID, key = true)
-    public Long id;
-
-    @StorIOSQLiteColumn(name = MangaSyncTable.COLUMN_MANGA_ID)
-    public long manga_id;
-
-    @StorIOSQLiteColumn(name = MangaSyncTable.COLUMN_SYNC_ID)
-    public int sync_id;
-
-    @StorIOSQLiteColumn(name = MangaSyncTable.COLUMN_REMOTE_ID)
-    public int remote_id;
-
-    @StorIOSQLiteColumn(name = MangaSyncTable.COLUMN_TITLE)
-    public String title;
-
-    @StorIOSQLiteColumn(name = MangaSyncTable.COLUMN_LAST_CHAPTER_READ)
-    public int last_chapter_read;
-
-    @StorIOSQLiteColumn(name = MangaSyncTable.COLUMN_TOTAL_CHAPTERS)
-    public int total_chapters;
-
-    @StorIOSQLiteColumn(name = MangaSyncTable.COLUMN_SCORE)
-    public float score;
-
-    @StorIOSQLiteColumn(name = MangaSyncTable.COLUMN_STATUS)
-    public int status;
-
-    public boolean update;
-
-    public static MangaSync create(MangaSyncService service) {
-        MangaSync mangasync = new MangaSync();
-        mangasync.sync_id = service.getId();
-        return mangasync;
-    }
-
-    public void copyPersonalFrom(MangaSync other) {
-        last_chapter_read = other.last_chapter_read;
-        score = other.score;
-        status = other.status;
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/MangaSync.kt

@@ -0,0 +1,40 @@
+package eu.kanade.tachiyomi.data.database.models
+
+import java.io.Serializable
+
+interface MangaSync : Serializable {
+
+    var id: Long?
+
+    var manga_id: Long
+
+    var sync_id: Int
+
+    var remote_id: Int
+
+    var title: String
+
+    var last_chapter_read: Int
+
+    var total_chapters: Int
+
+    var score: Float
+
+    var status: Int
+
+    var update: Boolean
+
+    fun copyPersonalFrom(other: MangaSync) {
+        last_chapter_read = other.last_chapter_read
+        score = other.score
+        status = other.status
+    }
+
+    companion object {
+
+        fun create(serviceId: Int): MangaSync = MangaSyncImpl().apply {
+            sync_id = serviceId
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/models/MangaSyncImpl.kt

@@ -0,0 +1,43 @@
+package eu.kanade.tachiyomi.data.database.models
+
+class MangaSyncImpl : MangaSync {
+
+    override var id: Long? = null
+
+    override var manga_id: Long = 0
+
+    override var sync_id: Int = 0
+
+    override var remote_id: Int = 0
+
+    override lateinit var title: String
+
+    override var last_chapter_read: Int = 0
+
+    override var total_chapters: Int = 0
+
+    override var score: Float = 0f
+
+    override var status: Int = 0
+
+    override var update: Boolean = false
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other == null || javaClass != other.javaClass) return false
+
+        val mangaSync = other as MangaSync
+
+        if (manga_id != mangaSync.manga_id) return false
+        if (sync_id != mangaSync.sync_id) return false
+        return remote_id == mangaSync.remote_id
+    }
+
+    override fun hashCode(): Int {
+        var result = (manga_id xor manga_id.ushr(32)).toInt()
+        result = 31 * result + sync_id
+        result = 31 * result + remote_id
+        return result
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/CategoryQueries.kt

@@ -0,0 +1,36 @@
+package eu.kanade.tachiyomi.data.database.queries
+
+import com.pushtorefresh.storio.sqlite.queries.Query
+import com.pushtorefresh.storio.sqlite.queries.RawQuery
+import eu.kanade.tachiyomi.data.database.DbProvider
+import eu.kanade.tachiyomi.data.database.models.Category
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.database.tables.CategoryTable
+
+interface CategoryQueries : DbProvider {
+
+    fun getCategories() = db.get()
+            .listOfObjects(Category::class.java)
+            .withQuery(Query.builder()
+                    .table(CategoryTable.TABLE)
+                    .orderBy(CategoryTable.COL_ORDER)
+                    .build())
+            .prepare()
+
+    fun getCategoriesForManga(manga: Manga) = db.get()
+            .listOfObjects(Category::class.java)
+            .withQuery(RawQuery.builder()
+                    .query(getCategoriesForMangaQuery())
+                    .args(manga.id)
+                    .build())
+            .prepare()
+
+    fun insertCategory(category: Category) = db.put().`object`(category).prepare()
+
+    fun insertCategories(categories: List<Category>) = db.put().objects(categories).prepare()
+
+    fun deleteCategory(category: Category) = db.delete().`object`(category).prepare()
+
+    fun deleteCategories(categories: List<Category>) = db.delete().objects(categories).prepare()
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/ChapterQueries.kt

@@ -0,0 +1,59 @@
+package eu.kanade.tachiyomi.data.database.queries
+
+import com.pushtorefresh.storio.sqlite.queries.Query
+import com.pushtorefresh.storio.sqlite.queries.RawQuery
+import eu.kanade.tachiyomi.data.database.DbProvider
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.database.models.MangaChapter
+import eu.kanade.tachiyomi.data.database.resolvers.ChapterProgressPutResolver
+import eu.kanade.tachiyomi.data.database.resolvers.ChapterSourceOrderPutResolver
+import eu.kanade.tachiyomi.data.database.resolvers.MangaChapterGetResolver
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable
+import java.util.*
+
+interface ChapterQueries : DbProvider {
+
+    fun getChapters(manga: Manga) = db.get()
+            .listOfObjects(Chapter::class.java)
+            .withQuery(Query.builder()
+                    .table(ChapterTable.TABLE)
+                    .where("${ChapterTable.COL_MANGA_ID} = ?")
+                    .whereArgs(manga.id)
+                    .build())
+            .prepare()
+
+    fun getRecentChapters(date: Date) = db.get()
+            .listOfObjects(MangaChapter::class.java)
+            .withQuery(RawQuery.builder()
+                    .query(getRecentsQuery())
+                    .args(date.time)
+                    .observesTables(ChapterTable.TABLE)
+                    .build())
+            .withGetResolver(MangaChapterGetResolver.INSTANCE)
+            .prepare()
+
+    fun insertChapter(chapter: Chapter) = db.put().`object`(chapter).prepare()
+
+    fun insertChapters(chapters: List<Chapter>) = db.put().objects(chapters).prepare()
+
+    fun deleteChapter(chapter: Chapter) = db.delete().`object`(chapter).prepare()
+
+    fun deleteChapters(chapters: List<Chapter>) = db.delete().objects(chapters).prepare()
+
+    fun updateChapterProgress(chapter: Chapter) = db.put()
+            .`object`(chapter)
+            .withPutResolver(ChapterProgressPutResolver())
+            .prepare()
+
+    fun updateChaptersProgress(chapters: List<Chapter>) = db.put()
+            .objects(chapters)
+            .withPutResolver(ChapterProgressPutResolver())
+            .prepare()
+
+    fun fixChaptersSourceOrder(chapters: List<Chapter>) = db.put()
+            .objects(chapters)
+            .withPutResolver(ChapterSourceOrderPutResolver())
+            .prepare()
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/HistoryQueries.kt

@@ -0,0 +1,63 @@
+package eu.kanade.tachiyomi.data.database.queries
+
+import com.pushtorefresh.storio.sqlite.queries.RawQuery
+import eu.kanade.tachiyomi.data.database.DbProvider
+import eu.kanade.tachiyomi.data.database.models.History
+import eu.kanade.tachiyomi.data.database.models.MangaChapterHistory
+import eu.kanade.tachiyomi.data.database.resolvers.HistoryLastReadPutResolver
+import eu.kanade.tachiyomi.data.database.resolvers.MangaChapterHistoryGetResolver
+import eu.kanade.tachiyomi.data.database.tables.HistoryTable
+import java.util.*
+
+interface HistoryQueries : DbProvider {
+
+    /**
+     * Insert history into database
+     * @param history object containing history information
+     */
+    fun insertHistory(history: History) = db.put().`object`(history).prepare()
+
+    /**
+     * Returns history of recent manga containing last read chapter
+     * @param date recent date range
+     */
+    fun getRecentManga(date: Date) = db.get()
+            .listOfObjects(MangaChapterHistory::class.java)
+            .withQuery(RawQuery.builder()
+                    .query(getRecentMangasQuery())
+                    .args(date.time)
+                    .observesTables(HistoryTable.TABLE)
+                    .build())
+            .withGetResolver(MangaChapterHistoryGetResolver.INSTANCE)
+            .prepare()
+
+    fun getHistoryByMangaId(mangaId: Long) = db.get()
+            .listOfObjects(History::class.java)
+            .withQuery(RawQuery.builder()
+                    .query(getHistoryByMangaId())
+                    .args(mangaId)
+                    .observesTables(HistoryTable.TABLE)
+                    .build())
+            .prepare()
+
+
+    /**
+     * Updates the history last read.
+     * Inserts history object if not yet in database
+     * @param history history object
+     */
+    fun updateHistoryLastRead(history: History) = db.put()
+            .`object`(history)
+            .withPutResolver(HistoryLastReadPutResolver())
+            .prepare()
+
+    /**
+     * Updates the history last read.
+     * Inserts history object if not yet in database
+     * @param historyList history object list
+     */
+    fun updateHistoryLastRead(historyList: List<History>) = db.put()
+            .objects(historyList)
+            .withPutResolver(HistoryLastReadPutResolver())
+            .prepare()
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/MangaCategoryQueries.kt

@@ -0,0 +1,32 @@
+package eu.kanade.tachiyomi.data.database.queries
+
+import com.pushtorefresh.storio.Queries
+import com.pushtorefresh.storio.sqlite.queries.DeleteQuery
+import eu.kanade.tachiyomi.data.database.DbProvider
+import eu.kanade.tachiyomi.data.database.inTransaction
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.database.models.MangaCategory
+import eu.kanade.tachiyomi.data.database.tables.MangaCategoryTable
+
+interface MangaCategoryQueries : DbProvider {
+
+    fun insertMangaCategory(mangaCategory: MangaCategory) = db.put().`object`(mangaCategory).prepare()
+
+    fun insertMangasCategories(mangasCategories: List<MangaCategory>) = db.put().objects(mangasCategories).prepare()
+
+    fun deleteOldMangasCategories(mangas: List<Manga>) = db.delete()
+            .byQuery(DeleteQuery.builder()
+                    .table(MangaCategoryTable.TABLE)
+                    .where("${MangaCategoryTable.COL_MANGA_ID} IN (${Queries.placeholders(mangas.size)})")
+                    .whereArgs(*mangas.map { it.id }.toTypedArray())
+                    .build())
+            .prepare()
+
+    fun setMangaCategories(mangasCategories: List<MangaCategory>, mangas: List<Manga>) {
+        db.inTransaction {
+            deleteOldMangasCategories(mangas).executeAsBlocking()
+            insertMangasCategories(mangasCategories).executeAsBlocking()
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/MangaQueries.kt

@@ -0,0 +1,81 @@
+package eu.kanade.tachiyomi.data.database.queries
+
+import com.pushtorefresh.storio.sqlite.queries.DeleteQuery
+import com.pushtorefresh.storio.sqlite.queries.Query
+import com.pushtorefresh.storio.sqlite.queries.RawQuery
+import eu.kanade.tachiyomi.data.database.DbProvider
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.database.resolvers.LibraryMangaGetResolver
+import eu.kanade.tachiyomi.data.database.resolvers.MangaFlagsPutResolver
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable
+import eu.kanade.tachiyomi.data.database.tables.MangaCategoryTable
+import eu.kanade.tachiyomi.data.database.tables.MangaTable
+
+interface MangaQueries : DbProvider {
+
+    fun getMangas() = db.get()
+            .listOfObjects(Manga::class.java)
+            .withQuery(Query.builder()
+                    .table(MangaTable.TABLE)
+                    .build())
+            .prepare()
+
+    fun getLibraryMangas() = db.get()
+            .listOfObjects(Manga::class.java)
+            .withQuery(RawQuery.builder()
+                    .query(libraryQuery)
+                    .observesTables(MangaTable.TABLE, ChapterTable.TABLE, MangaCategoryTable.TABLE)
+                    .build())
+            .withGetResolver(LibraryMangaGetResolver.INSTANCE)
+            .prepare()
+
+    open fun getFavoriteMangas() = db.get()
+            .listOfObjects(Manga::class.java)
+            .withQuery(Query.builder()
+                    .table(MangaTable.TABLE)
+                    .where("${MangaTable.COL_FAVORITE} = ?")
+                    .whereArgs(1)
+                    .orderBy(MangaTable.COL_TITLE)
+                    .build())
+            .prepare()
+
+    fun getManga(url: String, sourceId: Int) = db.get()
+            .`object`(Manga::class.java)
+            .withQuery(Query.builder()
+                    .table(MangaTable.TABLE)
+                    .where("${MangaTable.COL_URL} = ? AND ${MangaTable.COL_SOURCE} = ?")
+                    .whereArgs(url, sourceId)
+                    .build())
+            .prepare()
+
+    fun getManga(id: Long) = db.get()
+            .`object`(Manga::class.java)
+            .withQuery(Query.builder()
+                    .table(MangaTable.TABLE)
+                    .where("${MangaTable.COL_ID} = ?")
+                    .whereArgs(id)
+                    .build())
+            .prepare()
+
+    fun insertManga(manga: Manga) = db.put().`object`(manga).prepare()
+
+    fun insertMangas(mangas: List<Manga>) = db.put().objects(mangas).prepare()
+
+    fun updateFlags(manga: Manga) = db.put()
+            .`object`(manga)
+            .withPutResolver(MangaFlagsPutResolver())
+            .prepare()
+
+    fun deleteManga(manga: Manga) = db.delete().`object`(manga).prepare()
+
+    fun deleteMangas(mangas: List<Manga>) = db.delete().objects(mangas).prepare()
+
+    fun deleteMangasNotInLibrary() = db.delete()
+            .byQuery(DeleteQuery.builder()
+                    .table(MangaTable.TABLE)
+                    .where("${MangaTable.COL_FAVORITE} = ?")
+                    .whereArgs(0)
+                    .build())
+            .prepare()
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/MangaSyncQueries.kt

@@ -0,0 +1,46 @@
+package eu.kanade.tachiyomi.data.database.queries
+
+import com.pushtorefresh.storio.sqlite.queries.DeleteQuery
+import com.pushtorefresh.storio.sqlite.queries.Query
+import eu.kanade.tachiyomi.data.database.DbProvider
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.database.models.MangaSync
+import eu.kanade.tachiyomi.data.database.tables.MangaSyncTable
+import eu.kanade.tachiyomi.data.mangasync.MangaSyncService
+
+interface MangaSyncQueries : DbProvider {
+
+    fun getMangaSync(manga: Manga, sync: MangaSyncService) = db.get()
+            .`object`(MangaSync::class.java)
+            .withQuery(Query.builder()
+                    .table(MangaSyncTable.TABLE)
+                    .where("${MangaSyncTable.COL_MANGA_ID} = ? AND " +
+                            "${MangaSyncTable.COL_SYNC_ID} = ?")
+                    .whereArgs(manga.id, sync.id)
+                    .build())
+            .prepare()
+
+    fun getMangasSync(manga: Manga) = db.get()
+            .listOfObjects(MangaSync::class.java)
+            .withQuery(Query.builder()
+                    .table(MangaSyncTable.TABLE)
+                    .where("${MangaSyncTable.COL_MANGA_ID} = ?")
+                    .whereArgs(manga.id)
+                    .build())
+            .prepare()
+
+    fun insertMangaSync(manga: MangaSync) = db.put().`object`(manga).prepare()
+
+    fun insertMangasSync(mangas: List<MangaSync>) = db.put().objects(mangas).prepare()
+
+    fun deleteMangaSync(manga: MangaSync) = db.delete().`object`(manga).prepare()
+
+    fun deleteMangaSyncForManga(manga: Manga) = db.delete()
+            .byQuery(DeleteQuery.builder()
+                    .table(MangaSyncTable.TABLE)
+                    .where("${MangaSyncTable.COL_MANGA_ID} = ?")
+                    .whereArgs(manga.id)
+                    .build())
+            .prepare()
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/RawQueries.kt

@@ -0,0 +1,84 @@
+package eu.kanade.tachiyomi.data.database.queries
+
+import eu.kanade.tachiyomi.data.database.tables.CategoryTable as Category
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable as Chapter
+import eu.kanade.tachiyomi.data.database.tables.HistoryTable as History
+import eu.kanade.tachiyomi.data.database.tables.MangaCategoryTable as MangaCategory
+import eu.kanade.tachiyomi.data.database.tables.MangaTable as Manga
+
+/**
+ * Query to get the manga from the library, with their categories and unread count.
+ */
+val libraryQuery = """
+    SELECT M.*, COALESCE(MC.${MangaCategory.COL_CATEGORY_ID}, 0) AS ${Manga.COL_CATEGORY}
+    FROM (
+        SELECT ${Manga.TABLE}.*, COALESCE(C.unread, 0) AS ${Manga.COL_UNREAD}
+        FROM ${Manga.TABLE}
+        LEFT JOIN (
+            SELECT ${Chapter.COL_MANGA_ID}, COUNT(*) AS unread
+            FROM ${Chapter.TABLE}
+            WHERE ${Chapter.COL_READ} = 0
+            GROUP BY ${Chapter.COL_MANGA_ID}
+        ) AS C
+        ON ${Manga.COL_ID} = C.${Chapter.COL_MANGA_ID}
+        WHERE ${Manga.COL_FAVORITE} = 1
+        GROUP BY ${Manga.COL_ID}
+        ORDER BY ${Manga.COL_TITLE}
+    ) AS M
+    LEFT JOIN (
+        SELECT * FROM ${MangaCategory.TABLE}) AS MC
+        ON MC.${MangaCategory.COL_MANGA_ID} = M.${Manga.COL_ID}
+"""
+
+/**
+ * Query to get the recent chapters of manga from the library up to a date.
+ */
+fun getRecentsQuery() = """
+    SELECT ${Manga.TABLE}.${Manga.COL_URL} as mangaUrl, * FROM ${Manga.TABLE} JOIN ${Chapter.TABLE}
+    ON ${Manga.TABLE}.${Manga.COL_ID} = ${Chapter.TABLE}.${Chapter.COL_MANGA_ID}
+    WHERE ${Manga.COL_FAVORITE} = 1 AND ${Chapter.COL_DATE_UPLOAD} > ?
+    ORDER BY ${Chapter.COL_DATE_UPLOAD} DESC
+"""
+
+/**
+ * Query to get the recently read chapters of manga from the library up to a date.
+ * The max_last_read table contains the most recent chapters grouped by manga
+ * The select statement returns all information of chapters that have the same id as the chapter in max_last_read
+ * and are read after the given time period
+ * @return return limit is 25
+ */
+fun getRecentMangasQuery() = """
+    SELECT ${Manga.TABLE}.${Manga.COL_URL} as mangaUrl, ${Manga.TABLE}.*, ${Chapter.TABLE}.*, ${History.TABLE}.*
+    FROM ${Manga.TABLE}
+    JOIN ${Chapter.TABLE}
+    ON ${Manga.TABLE}.${Manga.COL_ID} = ${Chapter.TABLE}.${Chapter.COL_MANGA_ID}
+    JOIN ${History.TABLE}
+    ON ${Chapter.TABLE}.${Chapter.COL_ID} = ${History.TABLE}.${History.COL_CHAPTER_ID}
+    JOIN (
+    SELECT ${Chapter.TABLE}.${Chapter.COL_MANGA_ID},${Chapter.TABLE}.${Chapter.COL_ID} as ${History.COL_CHAPTER_ID}, MAX(${History.TABLE}.${History.COL_LAST_READ}) as ${History.COL_LAST_READ}
+    FROM ${Chapter.TABLE} JOIN ${History.TABLE}
+    ON ${Chapter.TABLE}.${Chapter.COL_ID} = ${History.TABLE}.${History.COL_CHAPTER_ID}
+    GROUP BY ${Chapter.TABLE}.${Chapter.COL_MANGA_ID}) AS max_last_read
+    ON ${Chapter.TABLE}.${Chapter.COL_MANGA_ID} = max_last_read.${Chapter.COL_MANGA_ID}
+    WHERE ${History.TABLE}.${History.COL_LAST_READ} > ? AND max_last_read.${History.COL_CHAPTER_ID} = ${History.TABLE}.${History.COL_CHAPTER_ID}
+    ORDER BY max_last_read.${History.COL_LAST_READ} DESC
+    LIMIT 25
+"""
+
+fun getHistoryByMangaId() = """
+    SELECT ${History.TABLE}.*
+    FROM ${History.TABLE}
+    JOIN ${Chapter.TABLE}
+    ON ${History.TABLE}.${History.COL_CHAPTER_ID} = ${Chapter.TABLE}.${Chapter.COL_ID}
+    WHERE ${Chapter.TABLE}.${Chapter.COL_MANGA_ID} = ? AND ${History.TABLE}.${History.COL_CHAPTER_ID} = ${Chapter.TABLE}.${Chapter.COL_ID}
+"""
+
+/**
+ * Query to get the categories for a manga.
+ */
+fun getCategoriesForMangaQuery() = """
+    SELECT ${Category.TABLE}.* FROM ${Category.TABLE}
+    JOIN ${MangaCategory.TABLE} ON ${Category.TABLE}.${Category.COL_ID} =
+    ${MangaCategory.TABLE}.${MangaCategory.COL_CATEGORY_ID}
+    WHERE ${MangaCategory.COL_MANGA_ID} = ?
+"""

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/ChapterProgressPutResolver.kt

@@ -0,0 +1,34 @@
+package eu.kanade.tachiyomi.data.database.resolvers
+
+import android.content.ContentValues
+import com.pushtorefresh.storio.sqlite.StorIOSQLite
+import com.pushtorefresh.storio.sqlite.operations.put.PutResolver
+import com.pushtorefresh.storio.sqlite.operations.put.PutResult
+import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
+import eu.kanade.tachiyomi.data.database.inTransactionReturn
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable
+
+class ChapterProgressPutResolver : PutResolver<Chapter>() {
+
+    override fun performPut(db: StorIOSQLite, chapter: Chapter) = db.inTransactionReturn {
+        val updateQuery = mapToUpdateQuery(chapter)
+        val contentValues = mapToContentValues(chapter)
+
+        val numberOfRowsUpdated = db.lowLevel().update(updateQuery, contentValues)
+        PutResult.newUpdateResult(numberOfRowsUpdated, updateQuery.table())
+    }
+
+    fun mapToUpdateQuery(chapter: Chapter) = UpdateQuery.builder()
+            .table(ChapterTable.TABLE)
+            .where("${ChapterTable.COL_ID} = ?")
+            .whereArgs(chapter.id)
+            .build()
+
+    fun mapToContentValues(chapter: Chapter) = ContentValues(2).apply {
+        put(ChapterTable.COL_READ, chapter.read)
+        put(ChapterTable.COL_LAST_PAGE_READ, chapter.last_page_read)
+    }
+
+}
+

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/ChapterSourceOrderPutResolver.kt

@@ -0,0 +1,32 @@
+package eu.kanade.tachiyomi.data.database.resolvers
+
+import android.content.ContentValues
+import com.pushtorefresh.storio.sqlite.StorIOSQLite
+import com.pushtorefresh.storio.sqlite.operations.put.PutResolver
+import com.pushtorefresh.storio.sqlite.operations.put.PutResult
+import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
+import eu.kanade.tachiyomi.data.database.inTransactionReturn
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.tables.ChapterTable
+
+class ChapterSourceOrderPutResolver : PutResolver<Chapter>() {
+
+    override fun performPut(db: StorIOSQLite, chapter: Chapter) = db.inTransactionReturn {
+        val updateQuery = mapToUpdateQuery(chapter)
+        val contentValues = mapToContentValues(chapter)
+
+        val numberOfRowsUpdated = db.lowLevel().update(updateQuery, contentValues)
+        PutResult.newUpdateResult(numberOfRowsUpdated, updateQuery.table())
+    }
+
+    fun mapToUpdateQuery(chapter: Chapter) = UpdateQuery.builder()
+            .table(ChapterTable.TABLE)
+            .where("${ChapterTable.COL_URL} = ? AND ${ChapterTable.COL_MANGA_ID} = ?")
+            .whereArgs(chapter.url, chapter.manga_id)
+            .build()
+
+    fun mapToContentValues(chapter: Chapter) = ContentValues(1).apply {
+        put(ChapterTable.COL_SOURCE_ORDER, chapter.source_order)
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/HistoryLastReadPutResolver.kt

@@ -0,0 +1,64 @@
+package eu.kanade.tachiyomi.data.database.resolvers
+
+import android.content.ContentValues
+import android.support.annotation.NonNull
+import com.pushtorefresh.storio.sqlite.StorIOSQLite
+import com.pushtorefresh.storio.sqlite.operations.put.PutResult
+import com.pushtorefresh.storio.sqlite.queries.Query
+import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
+import eu.kanade.tachiyomi.data.database.inTransactionReturn
+import eu.kanade.tachiyomi.data.database.mappers.HistoryPutResolver
+import eu.kanade.tachiyomi.data.database.models.History
+import eu.kanade.tachiyomi.data.database.tables.HistoryTable
+
+class HistoryLastReadPutResolver : HistoryPutResolver() {
+
+    /**
+     * Updates last_read time of chapter
+     */
+    override fun performPut(@NonNull db: StorIOSQLite, @NonNull history: History): PutResult = db.inTransactionReturn {
+        val updateQuery = mapToUpdateQuery(history)
+
+        val cursor = db.lowLevel().query(Query.builder()
+                .table(updateQuery.table())
+                .where(updateQuery.where())
+                .whereArgs(updateQuery.whereArgs())
+                .build())
+
+        val putResult: PutResult
+
+        try {
+            if (cursor.count == 0) {
+                val insertQuery = mapToInsertQuery(history)
+                val insertedId = db.lowLevel().insert(insertQuery, mapToContentValues(history))
+                putResult = PutResult.newInsertResult(insertedId, insertQuery.table())
+            } else {
+                val numberOfRowsUpdated = db.lowLevel().update(updateQuery, mapToUpdateContentValues(history))
+                putResult = PutResult.newUpdateResult(numberOfRowsUpdated, updateQuery.table())
+            }
+        } finally {
+            cursor.close()
+        }
+
+        putResult
+    }
+
+    /**
+     * Creates update query
+     * @param obj history object
+     */
+    override fun mapToUpdateQuery(obj: History) = UpdateQuery.builder()
+            .table(HistoryTable.TABLE)
+            .where("${HistoryTable.COL_CHAPTER_ID} = ?")
+            .whereArgs(obj.chapter_id)
+            .build()
+
+    /**
+     * Create content query
+     * @param history object
+     */
+    fun mapToUpdateContentValues(history: History) = ContentValues(1).apply {
+        put(HistoryTable.COL_LAST_READ, history.last_read)
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/LibraryMangaGetResolver.java

@@ -1,61 +0,0 @@
-package eu.kanade.tachiyomi.data.database.resolvers;
-
-import android.database.Cursor;
-import android.support.annotation.NonNull;
-
-import eu.kanade.tachiyomi.data.database.models.Manga;
-import eu.kanade.tachiyomi.data.database.models.MangaStorIOSQLiteGetResolver;
-import eu.kanade.tachiyomi.data.database.tables.ChapterTable;
-import eu.kanade.tachiyomi.data.database.tables.MangaCategoryTable;
-import eu.kanade.tachiyomi.data.database.tables.MangaTable;
-
-public class LibraryMangaGetResolver extends MangaStorIOSQLiteGetResolver {
-
-    public static final LibraryMangaGetResolver INSTANCE = new LibraryMangaGetResolver();
-
-    public static final String QUERY = String.format(
-            "SELECT M.*, COALESCE(MC.%10$s, 0) AS %12$s " +
-            "FROM (" +
-                "SELECT %1$s.*, COALESCE(C.unread, 0) AS %6$s " +
-                "FROM %1$s " +
-                "LEFT JOIN (" +
-                    "SELECT %5$s, COUNT(*) AS unread " +
-                    "FROM %2$s " +
-                    "WHERE %7$s = 0 " +
-                    "GROUP BY %5$s" +
-                ") AS C " +
-                "ON %4$s = C.%5$s " +
-                "WHERE %8$s = 1 " +
-                "GROUP BY %4$s " +
-                "ORDER BY %9$s" +
-            ") AS M " +
-            "LEFT JOIN (SELECT * FROM %3$s) AS MC ON MC.%11$s = M.%4$s",
-            MangaTable.TABLE,
-            ChapterTable.TABLE,
-            MangaCategoryTable.TABLE,
-            MangaTable.COLUMN_ID,
-            ChapterTable.COLUMN_MANGA_ID,
-            MangaTable.COLUMN_UNREAD,
-            ChapterTable.COLUMN_READ,
-            MangaTable.COLUMN_FAVORITE,
-            MangaTable.COLUMN_TITLE,
-            MangaCategoryTable.COLUMN_CATEGORY_ID,
-            MangaCategoryTable.COLUMN_MANGA_ID,
-            MangaTable.COLUMN_CATEGORY
-    );
-
-    @Override
-    @NonNull
-    public Manga mapFromCursor(@NonNull Cursor cursor) {
-        Manga manga = super.mapFromCursor(cursor);
-
-        int unreadColumn = cursor.getColumnIndex(MangaTable.COLUMN_UNREAD);
-        manga.unread = cursor.getInt(unreadColumn);
-
-        int categoryColumn = cursor.getColumnIndex(MangaTable.COLUMN_CATEGORY);
-        manga.category = cursor.getInt(categoryColumn);
-
-        return manga;
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/LibraryMangaGetResolver.kt

@@ -0,0 +1,26 @@
+package eu.kanade.tachiyomi.data.database.resolvers
+
+import android.database.Cursor
+import eu.kanade.tachiyomi.data.database.mappers.MangaGetResolver
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.database.tables.MangaTable
+
+class LibraryMangaGetResolver : MangaGetResolver() {
+
+    companion object {
+        val INSTANCE = LibraryMangaGetResolver()
+    }
+
+    override fun mapFromCursor(cursor: Cursor): Manga {
+        val manga = super.mapFromCursor(cursor)
+
+        val unreadColumn = cursor.getColumnIndex(MangaTable.COL_UNREAD)
+        manga.unread = cursor.getInt(unreadColumn)
+
+        val categoryColumn = cursor.getColumnIndex(MangaTable.COL_CATEGORY)
+        manga.category = cursor.getInt(categoryColumn)
+
+        return manga
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/MangaChapterGetResolver.kt

@@ -0,0 +1,28 @@
+package eu.kanade.tachiyomi.data.database.resolvers
+
+import android.database.Cursor
+import com.pushtorefresh.storio.sqlite.operations.get.DefaultGetResolver
+import eu.kanade.tachiyomi.data.database.mappers.ChapterGetResolver
+import eu.kanade.tachiyomi.data.database.mappers.MangaGetResolver
+import eu.kanade.tachiyomi.data.database.models.MangaChapter
+
+class MangaChapterGetResolver : DefaultGetResolver<MangaChapter>() {
+
+    companion object {
+        val INSTANCE = MangaChapterGetResolver()
+    }
+
+    private val mangaGetResolver = MangaGetResolver()
+
+    private val chapterGetResolver = ChapterGetResolver()
+
+    override fun mapFromCursor(cursor: Cursor): MangaChapter {
+        val manga = mangaGetResolver.mapFromCursor(cursor)
+        val chapter = chapterGetResolver.mapFromCursor(cursor)
+        manga.id = chapter.manga_id
+        manga.url = cursor.getString(cursor.getColumnIndex("mangaUrl"))
+
+        return MangaChapter(manga, chapter)
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/MangaChapterHistoryGetResolver.kt

@@ -0,0 +1,51 @@
+package eu.kanade.tachiyomi.data.database.resolvers
+
+import android.database.Cursor
+import com.pushtorefresh.storio.sqlite.operations.get.DefaultGetResolver
+import eu.kanade.tachiyomi.data.database.mappers.ChapterGetResolver
+import eu.kanade.tachiyomi.data.database.mappers.HistoryGetResolver
+import eu.kanade.tachiyomi.data.database.mappers.MangaGetResolver
+import eu.kanade.tachiyomi.data.database.models.MangaChapterHistory
+
+class MangaChapterHistoryGetResolver : DefaultGetResolver<MangaChapterHistory>() {
+    companion object {
+        val INSTANCE = MangaChapterHistoryGetResolver()
+    }
+
+    /**
+     * Manga get resolver
+     */
+    private val mangaGetResolver = MangaGetResolver()
+
+    /**
+     * Chapter get resolver
+     */
+    private val chapterResolver = ChapterGetResolver()
+
+    /**
+     * History get resolver
+     */
+    private val historyGetResolver = HistoryGetResolver()
+
+    /**
+     * Map correct objects from cursor result
+     */
+    override fun mapFromCursor(cursor: Cursor): MangaChapterHistory {
+        // Get manga object
+        val manga = mangaGetResolver.mapFromCursor(cursor)
+
+        // Get chapter object
+        val chapter = chapterResolver.mapFromCursor(cursor)
+
+        // Get history object
+        val history = historyGetResolver.mapFromCursor(cursor)
+
+        // Make certain column conflicts are dealt with
+        manga.id = chapter.manga_id
+        manga.url = cursor.getString(cursor.getColumnIndex("mangaUrl"))
+        chapter.id = history.chapter_id
+
+        // Return result
+        return MangaChapterHistory(manga, chapter, history)
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/MangaFlagsPutResolver.kt

@@ -0,0 +1,33 @@
+package eu.kanade.tachiyomi.data.database.resolvers
+
+import android.content.ContentValues
+import com.pushtorefresh.storio.sqlite.StorIOSQLite
+import com.pushtorefresh.storio.sqlite.operations.put.PutResolver
+import com.pushtorefresh.storio.sqlite.operations.put.PutResult
+import com.pushtorefresh.storio.sqlite.queries.UpdateQuery
+import eu.kanade.tachiyomi.data.database.inTransactionReturn
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.database.tables.MangaTable
+
+class MangaFlagsPutResolver : PutResolver<Manga>() {
+
+    override fun performPut(db: StorIOSQLite, manga: Manga) = db.inTransactionReturn {
+        val updateQuery = mapToUpdateQuery(manga)
+        val contentValues = mapToContentValues(manga)
+
+        val numberOfRowsUpdated = db.lowLevel().update(updateQuery, contentValues)
+        PutResult.newUpdateResult(numberOfRowsUpdated, updateQuery.table())
+    }
+
+    fun mapToUpdateQuery(manga: Manga) = UpdateQuery.builder()
+            .table(MangaTable.TABLE)
+            .where("${MangaTable.COL_ID} = ?")
+            .whereArgs(manga.id)
+            .build()
+
+    fun mapToContentValues(manga: Manga) = ContentValues(1).apply {
+        put(MangaTable.COL_CHAPTER_FLAGS, manga.chapter_flags)
+    }
+
+}
+

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/MangaWithUnreadGetResolver.java

@@ -1,23 +0,0 @@
-package eu.kanade.tachiyomi.data.database.resolvers;
-
-import android.database.Cursor;
-import android.support.annotation.NonNull;
-
-import eu.kanade.tachiyomi.data.database.models.Manga;
-import eu.kanade.tachiyomi.data.database.models.MangaStorIOSQLiteGetResolver;
-import eu.kanade.tachiyomi.data.database.tables.MangaTable;
-
-public class MangaWithUnreadGetResolver extends MangaStorIOSQLiteGetResolver {
-
-    public static final MangaWithUnreadGetResolver INSTANCE = new MangaWithUnreadGetResolver();
-
-    @Override
-    @NonNull
-    public Manga mapFromCursor(@NonNull Cursor cursor) {
-        Manga manga = super.mapFromCursor(cursor);
-        int unreadColumn = cursor.getColumnIndex(MangaTable.COLUMN_UNREAD);
-        manga.unread = cursor.getInt(unreadColumn);
-        return manga;
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/CategoryTable.java

@@ -1,39 +0,0 @@
-package eu.kanade.tachiyomi.data.database.tables;
-
-import android.support.annotation.NonNull;
-
-public class CategoryTable {
-
-    @NonNull
-    public static final String TABLE = "categories";
-
-    @NonNull
-    public static final String COLUMN_ID = "_id";
-
-    @NonNull
-    public static final String COLUMN_NAME = "name";
-
-    @NonNull
-    public static final String COLUMN_ORDER = "sort";
-
-    @NonNull
-    public static final String COLUMN_FLAGS = "flags";
-
-    // This is just class with Meta Data, we don't need instances
-    private CategoryTable() {
-        throw new IllegalStateException("No instances please");
-    }
-
-    // Better than static final field -> allows VM to unload useless String
-    // Because you need this string only once per application life on the device
-    @NonNull
-    public static String getCreateTableQuery() {
-        return "CREATE TABLE " + TABLE + "("
-                + COLUMN_ID + " INTEGER NOT NULL PRIMARY KEY, "
-                + COLUMN_NAME + " TEXT NOT NULL, "
-                + COLUMN_ORDER + " INTEGER NOT NULL, "
-                + COLUMN_FLAGS + " INTEGER NOT NULL"
-                + ");";
-
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/CategoryTable.kt

@@ -0,0 +1,23 @@
+package eu.kanade.tachiyomi.data.database.tables
+
+object CategoryTable {
+
+    const val TABLE = "categories"
+
+    const val COL_ID = "_id"
+
+    const val COL_NAME = "name"
+
+    const val COL_ORDER = "sort"
+
+    const val COL_FLAGS = "flags"
+
+    val createTableQuery: String
+        get() = """CREATE TABLE $TABLE(
+            $COL_ID INTEGER NOT NULL PRIMARY KEY,
+            $COL_NAME TEXT NOT NULL,
+            $COL_ORDER INTEGER NOT NULL,
+            $COL_FLAGS INTEGER NOT NULL
+            )"""
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/ChapterTable.java

@@ -1,59 +0,0 @@
-package eu.kanade.tachiyomi.data.database.tables;
-
-import android.support.annotation.NonNull;
-
-public class ChapterTable {
-
-    @NonNull
-    public static final String TABLE = "chapters";
-
-	@NonNull
-	public static final String COLUMN_ID = "_id";
-
-	@NonNull
-	public static final String COLUMN_MANGA_ID = "manga_id";
-
-	@NonNull
-	public static final String COLUMN_URL = "url";
-
-	@NonNull
-	public static final String COLUMN_NAME = "name";
-
-	@NonNull
-	public static final String COLUMN_READ = "read";
-
-	@NonNull
-	public static final String COLUMN_DATE_FETCH = "date_fetch";
-
-	@NonNull
-	public static final String COLUMN_DATE_UPLOAD = "date_upload";
-
-	@NonNull
-	public static final String COLUMN_LAST_PAGE_READ = "last_page_read";
-
-	@NonNull
-	public static final String COLUMN_CHAPTER_NUMBER = "chapter_number";
-
-	@NonNull
-	public static String getCreateTableQuery() {
-		return "CREATE TABLE " + TABLE + "("
-				+ COLUMN_ID + " INTEGER NOT NULL PRIMARY KEY, "
-				+ COLUMN_MANGA_ID + " INTEGER NOT NULL, "
-				+ COLUMN_URL + " TEXT NOT NULL, "
-				+ COLUMN_NAME + " TEXT NOT NULL, "
-				+ COLUMN_READ + " BOOLEAN NOT NULL, "
-				+ COLUMN_LAST_PAGE_READ + " INT NOT NULL, "
-				+ COLUMN_CHAPTER_NUMBER + " FLOAT NOT NULL, "
-				+ COLUMN_DATE_FETCH + " LONG NOT NULL, "
-				+ COLUMN_DATE_UPLOAD + " LONG NOT NULL, "
-				+ "FOREIGN KEY(" + COLUMN_MANGA_ID + ") REFERENCES " + MangaTable.TABLE + "(" + MangaTable.COLUMN_ID + ") "
-				+ "ON DELETE CASCADE"
-				+ ");";
-	}
-
-	public static String getCreateMangaIdIndexQuery() {
-		return "CREATE INDEX " + TABLE + "_" + COLUMN_MANGA_ID + "_index ON " + TABLE + "(" + COLUMN_MANGA_ID + ");";
-
-	}
-	
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/ChapterTable.kt

@@ -0,0 +1,49 @@
+package eu.kanade.tachiyomi.data.database.tables
+
+object ChapterTable {
+
+    const val TABLE = "chapters"
+
+    const val COL_ID = "_id"
+
+    const val COL_MANGA_ID = "manga_id"
+
+    const val COL_URL = "url"
+
+    const val COL_NAME = "name"
+
+    const val COL_READ = "read"
+
+    const val COL_DATE_FETCH = "date_fetch"
+
+    const val COL_DATE_UPLOAD = "date_upload"
+
+    const val COL_LAST_PAGE_READ = "last_page_read"
+
+    const val COL_CHAPTER_NUMBER = "chapter_number"
+
+    const val COL_SOURCE_ORDER = "source_order"
+
+    val createTableQuery: String
+        get() = """CREATE TABLE $TABLE(
+            $COL_ID INTEGER NOT NULL PRIMARY KEY,
+            $COL_MANGA_ID INTEGER NOT NULL,
+            $COL_URL TEXT NOT NULL,
+            $COL_NAME TEXT NOT NULL,
+            $COL_READ BOOLEAN NOT NULL,
+            $COL_LAST_PAGE_READ INT NOT NULL,
+            $COL_CHAPTER_NUMBER FLOAT NOT NULL,
+            $COL_SOURCE_ORDER INTEGER NOT NULL,
+            $COL_DATE_FETCH LONG NOT NULL,
+            $COL_DATE_UPLOAD LONG NOT NULL,
+            FOREIGN KEY($COL_MANGA_ID) REFERENCES ${MangaTable.TABLE} (${MangaTable.COL_ID})
+            ON DELETE CASCADE
+            )"""
+
+    val createMangaIdIndexQuery: String
+        get() = "CREATE INDEX ${TABLE}_${COL_MANGA_ID}_index ON $TABLE($COL_MANGA_ID)"
+
+    val sourceOrderUpdateQuery: String
+        get() = "ALTER TABLE $TABLE ADD COLUMN $COL_SOURCE_ORDER INTEGER DEFAULT 0"
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/HistoryTable.kt

@@ -0,0 +1,48 @@
+package eu.kanade.tachiyomi.data.database.tables
+
+object HistoryTable {
+
+    /**
+     * Table name
+     */
+    const val TABLE = "history"
+
+    /**
+     * Id column name
+     */
+    const val COL_ID = "${TABLE}_id"
+
+    /**
+     * Chapter id column name
+     */
+    const val COL_CHAPTER_ID = "${TABLE}_chapter_id"
+
+    /**
+     * Last read column name
+     */
+    const val COL_LAST_READ = "${TABLE}_last_read"
+
+    /**
+     * Time read column name
+     */
+    const val COL_TIME_READ = "${TABLE}_time_read"
+
+    /**
+     * query to create history table
+     */
+    val createTableQuery: String
+        get() = """CREATE TABLE $TABLE(
+            $COL_ID INTEGER NOT NULL PRIMARY KEY,
+            $COL_CHAPTER_ID INTEGER NOT NULL UNIQUE,
+            $COL_LAST_READ LONG,
+            $COL_TIME_READ LONG,
+            FOREIGN KEY($COL_CHAPTER_ID) REFERENCES ${ChapterTable.TABLE} (${ChapterTable.COL_ID})
+            ON DELETE CASCADE
+            )"""
+
+    /**
+     * query to index history chapter id
+     */
+    val createChapterIdIndexQuery: String
+        get() = "CREATE INDEX ${TABLE}_${COL_CHAPTER_ID}_index ON $TABLE($COL_CHAPTER_ID)"
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/MangaCategoryTable.java

@@ -1,40 +0,0 @@
-package eu.kanade.tachiyomi.data.database.tables;
-
-import android.support.annotation.NonNull;
-
-public class MangaCategoryTable {
-
-    @NonNull
-    public static final String TABLE = "mangas_categories";
-
-    @NonNull
-    public static final String COLUMN_ID = "_id";
-
-    @NonNull
-    public static final String COLUMN_MANGA_ID = "manga_id";
-
-    @NonNull
-    public static final String COLUMN_CATEGORY_ID = "category_id";
-
-    // This is just class with Meta Data, we don't need instances
-    private MangaCategoryTable() {
-        throw new IllegalStateException("No instances please");
-    }
-
-    // Better than static final field -> allows VM to unload useless String
-    // Because you need this string only once per application life on the device
-    @NonNull
-    public static String getCreateTableQuery() {
-        return "CREATE TABLE " + TABLE + "("
-                + COLUMN_ID + " INTEGER NOT NULL PRIMARY KEY, "
-                + COLUMN_MANGA_ID + " INTEGER NOT NULL, "
-                + COLUMN_CATEGORY_ID + " INTEGER NOT NULL, "
-                + "FOREIGN KEY(" + COLUMN_CATEGORY_ID + ") REFERENCES " + CategoryTable.TABLE + "(" + CategoryTable.COLUMN_ID + ") "
-                + "ON DELETE CASCADE, "
-                + "FOREIGN KEY(" + COLUMN_MANGA_ID + ") REFERENCES " + MangaTable.TABLE + "(" + MangaTable.COLUMN_ID + ") "
-                + "ON DELETE CASCADE"
-                + ");";
-
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/MangaCategoryTable.kt

@@ -0,0 +1,24 @@
+package eu.kanade.tachiyomi.data.database.tables
+
+object MangaCategoryTable {
+
+    const val TABLE = "mangas_categories"
+
+    const val COL_ID = "_id"
+
+    const val COL_MANGA_ID = "manga_id"
+
+    const val COL_CATEGORY_ID = "category_id"
+
+    val createTableQuery: String
+        get() = """CREATE TABLE $TABLE(
+            $COL_ID INTEGER NOT NULL PRIMARY KEY,
+            $COL_MANGA_ID INTEGER NOT NULL,
+            $COL_CATEGORY_ID INTEGER NOT NULL,
+            FOREIGN KEY($COL_CATEGORY_ID) REFERENCES ${CategoryTable.TABLE} (${CategoryTable.COL_ID})
+            ON DELETE CASCADE,
+            FOREIGN KEY($COL_MANGA_ID) REFERENCES ${MangaTable.TABLE} (${MangaTable.COL_ID})
+            ON DELETE CASCADE
+            )"""
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/MangaSyncTable.java

@@ -1,45 +0,0 @@
-package eu.kanade.tachiyomi.data.database.tables;
-
-import android.support.annotation.NonNull;
-
-public class MangaSyncTable {
-
-    public static final String TABLE = "manga_sync";
-
-    public static final String COLUMN_ID = "_id";
-
-    public static final String COLUMN_MANGA_ID = "manga_id";
-
-    public static final String COLUMN_SYNC_ID = "sync_id";
-
-    public static final String COLUMN_REMOTE_ID = "remote_id";
-
-    public static final String COLUMN_TITLE = "title";
-
-    public static final String COLUMN_LAST_CHAPTER_READ = "last_chapter_read";
-
-    public static final String COLUMN_STATUS = "status";
-
-    public static final String COLUMN_SCORE = "score";
-
-    public static final String COLUMN_TOTAL_CHAPTERS = "total_chapters";
-
-    @NonNull
-    public static String getCreateTableQuery() {
-        return "CREATE TABLE " + TABLE + "("
-                + COLUMN_ID + " INTEGER NOT NULL PRIMARY KEY, "
-                + COLUMN_MANGA_ID + " INTEGER NOT NULL, "
-                + COLUMN_SYNC_ID + " INTEGER NOT NULL, "
-                + COLUMN_REMOTE_ID + " INTEGER NOT NULL, "
-                + COLUMN_TITLE + " TEXT NOT NULL, "
-                + COLUMN_LAST_CHAPTER_READ + " INTEGER NOT NULL, "
-                + COLUMN_TOTAL_CHAPTERS + " INTEGER NOT NULL, "
-                + COLUMN_STATUS + " INTEGER NOT NULL, "
-                + COLUMN_SCORE + " FLOAT NOT NULL, "
-                + "UNIQUE (" + COLUMN_MANGA_ID + ", " + COLUMN_SYNC_ID + ") ON CONFLICT REPLACE, "
-                + "FOREIGN KEY(" + COLUMN_MANGA_ID + ") REFERENCES " + MangaTable.TABLE + "(" + MangaTable.COLUMN_ID + ") "
-                + "ON DELETE CASCADE"
-                + ");";
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/MangaSyncTable.kt

@@ -0,0 +1,41 @@
+package eu.kanade.tachiyomi.data.database.tables
+
+object MangaSyncTable {
+
+    const val TABLE = "manga_sync"
+
+    const val COL_ID = "_id"
+
+    const val COL_MANGA_ID = "manga_id"
+
+    const val COL_SYNC_ID = "sync_id"
+
+    const val COL_REMOTE_ID = "remote_id"
+
+    const val COL_TITLE = "title"
+
+    const val COL_LAST_CHAPTER_READ = "last_chapter_read"
+
+    const val COL_STATUS = "status"
+
+    const val COL_SCORE = "score"
+
+    const val COL_TOTAL_CHAPTERS = "total_chapters"
+
+    val createTableQuery: String
+        get() = """CREATE TABLE $TABLE(
+            $COL_ID INTEGER NOT NULL PRIMARY KEY,
+            $COL_MANGA_ID INTEGER NOT NULL,
+            $COL_SYNC_ID INTEGER NOT NULL,
+            $COL_REMOTE_ID INTEGER NOT NULL,
+            $COL_TITLE TEXT NOT NULL,
+            $COL_LAST_CHAPTER_READ INTEGER NOT NULL,
+            $COL_TOTAL_CHAPTERS INTEGER NOT NULL,
+            $COL_STATUS INTEGER NOT NULL,
+            $COL_SCORE FLOAT NOT NULL,
+            UNIQUE ($COL_MANGA_ID, $COL_SYNC_ID) ON CONFLICT REPLACE,
+            FOREIGN KEY($COL_MANGA_ID) REFERENCES ${MangaTable.TABLE} (${MangaTable.COL_ID})
+            ON DELETE CASCADE
+            )"""
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/MangaTable.java

@@ -1,98 +0,0 @@
-package eu.kanade.tachiyomi.data.database.tables;
-
-import android.support.annotation.NonNull;
-
-public class MangaTable {
-
-    @NonNull
-    public static final String TABLE = "mangas";
-
-    @NonNull
-    public static final String COLUMN_ID = "_id";
-
-    @NonNull
-    public static final String COLUMN_SOURCE = "source";
-
-    @NonNull
-    public static final String COLUMN_URL = "url";
-
-    @NonNull
-    public static final String COLUMN_ARTIST = "artist";
-
-    @NonNull
-    public static final String COLUMN_AUTHOR = "author" ;
-
-    @NonNull
-    public static final String COLUMN_DESCRIPTION = "description";
-
-    @NonNull
-    public static final String COLUMN_GENRE = "genre";
-
-    @NonNull
-    public static final String COLUMN_TITLE = "title";
-
-    @NonNull
-    public static final String COLUMN_STATUS = "status";
-
-    @NonNull
-    public static final String COLUMN_THUMBNAIL_URL = "thumbnail_url";
-
-    @NonNull
-    public static final String COLUMN_FAVORITE = "favorite";
-
-    @NonNull
-    public static final String COLUMN_LAST_UPDATE = "last_update";
-
-    @NonNull
-    public static final String COLUMN_INITIALIZED = "initialized";
-
-    @NonNull
-    public static final String COLUMN_VIEWER = "viewer";
-
-    @NonNull
-    public static final String COLUMN_CHAPTER_FLAGS = "chapter_flags";
-
-    @NonNull
-    public static final String COLUMN_UNREAD = "unread";
-
-    @NonNull
-    public static final String COLUMN_CATEGORY = "category";
-
-    // This is just class with Meta Data, we don't need instances
-    private MangaTable() {
-        throw new IllegalStateException("No instances please");
-    }
-
-    // Better than static final field -> allows VM to unload useless String
-    // Because you need this string only once per application life on the device
-    @NonNull
-    public static String getCreateTableQuery() {
-        return "CREATE TABLE " + TABLE + "("
-                + COLUMN_ID + " INTEGER NOT NULL PRIMARY KEY, "
-                + COLUMN_SOURCE + " INTEGER NOT NULL, "
-                + COLUMN_URL + " TEXT NOT NULL, "
-                + COLUMN_ARTIST + " TEXT, "
-                + COLUMN_AUTHOR + " TEXT, "
-                + COLUMN_DESCRIPTION + " TEXT, "
-                + COLUMN_GENRE + " TEXT, "
-                + COLUMN_TITLE + " TEXT NOT NULL, "
-                + COLUMN_STATUS + " INTEGER NOT NULL, "
-                + COLUMN_THUMBNAIL_URL + " TEXT, "
-                + COLUMN_FAVORITE + " INTEGER NOT NULL, "
-                + COLUMN_LAST_UPDATE + " LONG, "
-                + COLUMN_INITIALIZED + " BOOLEAN NOT NULL, "
-                + COLUMN_VIEWER + " INTEGER NOT NULL, "
-                + COLUMN_CHAPTER_FLAGS + " INTEGER NOT NULL"
-                + ");";
-
-    }
-
-    public static String getCreateUrlIndexQuery() {
-        return "CREATE INDEX " + TABLE + "_" + COLUMN_URL + "_index ON " + TABLE + "(" + COLUMN_URL + ");";
-    }
-
-    public static String getCreateFavoriteIndexQuery() {
-        return "CREATE INDEX " + TABLE + "_" + COLUMN_FAVORITE + "_index ON " + TABLE + "(" + COLUMN_FAVORITE + ");";
-
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/data/database/tables/MangaTable.kt

@@ -0,0 +1,65 @@
+package eu.kanade.tachiyomi.data.database.tables
+
+object MangaTable {
+
+    const val TABLE = "mangas"
+
+    const val COL_ID = "_id"
+
+    const val COL_SOURCE = "source"
+
+    const val COL_URL = "url"
+
+    const val COL_ARTIST = "artist"
+
+    const val COL_AUTHOR = "author"
+
+    const val COL_DESCRIPTION = "description"
+
+    const val COL_GENRE = "genre"
+
+    const val COL_TITLE = "title"
+
+    const val COL_STATUS = "status"
+
+    const val COL_THUMBNAIL_URL = "thumbnail_url"
+
+    const val COL_FAVORITE = "favorite"
+
+    const val COL_LAST_UPDATE = "last_update"
+
+    const val COL_INITIALIZED = "initialized"
+
+    const val COL_VIEWER = "viewer"
+
+    const val COL_CHAPTER_FLAGS = "chapter_flags"
+
+    const val COL_UNREAD = "unread"
+
+    const val COL_CATEGORY = "category"
+
+    val createTableQuery: String
+        get() = """CREATE TABLE $TABLE(
+            $COL_ID INTEGER NOT NULL PRIMARY KEY,
+            $COL_SOURCE INTEGER NOT NULL,
+            $COL_URL TEXT NOT NULL,
+            $COL_ARTIST TEXT,
+            $COL_AUTHOR TEXT,
+            $COL_DESCRIPTION TEXT,
+            $COL_GENRE TEXT,
+            $COL_TITLE TEXT NOT NULL,
+            $COL_STATUS INTEGER NOT NULL,
+            $COL_THUMBNAIL_URL TEXT,
+            $COL_FAVORITE INTEGER NOT NULL,
+            $COL_LAST_UPDATE LONG,
+            $COL_INITIALIZED BOOLEAN NOT NULL,
+            $COL_VIEWER INTEGER NOT NULL,
+            $COL_CHAPTER_FLAGS INTEGER NOT NULL
+            )"""
+
+    val createUrlIndexQuery: String
+        get() = "CREATE INDEX ${TABLE}_${COL_URL}_index ON $TABLE($COL_URL)"
+
+    val createFavoriteIndexQuery: String
+        get() = "CREATE INDEX ${TABLE}_${COL_FAVORITE}_index ON $TABLE($COL_FAVORITE)"
+}

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadManager.java

@@ -1,417 +0,0 @@
-package eu.kanade.tachiyomi.data.download;
-
-import android.content.Context;
-import android.net.Uri;
-
-import com.google.gson.Gson;
-import com.google.gson.reflect.TypeToken;
-import com.google.gson.stream.JsonReader;
-
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.FileReader;
-import java.io.IOException;
-import java.lang.reflect.Type;
-import java.util.ArrayList;
-import java.util.List;
-
-import eu.kanade.tachiyomi.data.database.models.Chapter;
-import eu.kanade.tachiyomi.data.database.models.Manga;
-import eu.kanade.tachiyomi.data.download.model.Download;
-import eu.kanade.tachiyomi.data.download.model.DownloadQueue;
-import eu.kanade.tachiyomi.data.preference.PreferencesHelper;
-import eu.kanade.tachiyomi.data.source.SourceManager;
-import eu.kanade.tachiyomi.data.source.base.Source;
-import eu.kanade.tachiyomi.data.source.model.Page;
-import eu.kanade.tachiyomi.event.DownloadChaptersEvent;
-import eu.kanade.tachiyomi.util.DiskUtils;
-import eu.kanade.tachiyomi.util.DynamicConcurrentMergeOperator;
-import rx.Observable;
-import rx.Subscription;
-import rx.android.schedulers.AndroidSchedulers;
-import rx.schedulers.Schedulers;
-import rx.subjects.BehaviorSubject;
-import rx.subjects.PublishSubject;
-import timber.log.Timber;
-
-public class DownloadManager {
-
-    private Context context;
-    private SourceManager sourceManager;
-    private PreferencesHelper preferences;
-    private Gson gson;
-
-    private PublishSubject<Download> downloadsQueueSubject;
-    private BehaviorSubject<Boolean> runningSubject;
-    private Subscription downloadsSubscription;
-
-    private DownloadQueue queue;
-    private volatile boolean isRunning;
-
-    public static final String PAGE_LIST_FILE = "index.json";
-
-    public DownloadManager(Context context, SourceManager sourceManager, PreferencesHelper preferences) {
-        this.context = context;
-        this.sourceManager = sourceManager;
-        this.preferences = preferences;
-
-        gson = new Gson();
-        queue = new DownloadQueue();
-
-        downloadsQueueSubject = PublishSubject.create();
-        runningSubject = BehaviorSubject.create();
-    }
-
-    private void initializeSubscriptions() {
-        if (downloadsSubscription != null && !downloadsSubscription.isUnsubscribed())
-            downloadsSubscription.unsubscribe();
-
-        downloadsSubscription = downloadsQueueSubject
-                .flatMap(this::downloadChapter, preferences.downloadThreads())
-                .onBackpressureBuffer()
-                .observeOn(AndroidSchedulers.mainThread())
-                .map(download -> areAllDownloadsFinished())
-                .subscribe(finished -> {
-                    if (finished) {
-                        DownloadService.stop(context);
-                    }
-                }, e -> Timber.e(e.getCause(), e.getMessage()));
-
-        if (!isRunning) {
-            isRunning = true;
-            runningSubject.onNext(true);
-        }
-    }
-
-    public void destroySubscriptions() {
-        if (isRunning) {
-            isRunning = false;
-            runningSubject.onNext(false);
-        }
-
-        if (downloadsSubscription != null && !downloadsSubscription.isUnsubscribed()) {
-            downloadsSubscription.unsubscribe();
-            downloadsSubscription = null;
-        }
-    }
-
-    // Create a download object for every chapter in the event and add them to the downloads queue
-    public void onDownloadChaptersEvent(DownloadChaptersEvent event) {
-        final Manga manga = event.getManga();
-        final Source source = sourceManager.get(manga.source);
-
-        // Used to avoid downloading chapters with the same name
-        final List<String> addedChapters = new ArrayList<>();
-
-        for (Chapter chapter : event.getChapters()) {
-            if (addedChapters.contains(chapter.name))
-                continue;
-
-            addedChapters.add(chapter.name);
-            Download download = new Download(source, manga, chapter);
-
-            if (!prepareDownload(download)) {
-                queue.add(download);
-                if (isRunning) downloadsQueueSubject.onNext(download);
-            }
-        }
-    }
-
-    // Public method to check if a chapter is downloaded
-    public boolean isChapterDownloaded(Source source, Manga manga, Chapter chapter) {
-        File directory = getAbsoluteChapterDirectory(source, manga, chapter);
-        if (!directory.exists())
-            return false;
-
-        List<Page> pages = getSavedPageList(source, manga, chapter);
-        return isChapterDownloaded(directory, pages);
-    }
-
-    // Prepare the download. Returns true if the chapter is already downloaded
-    private boolean prepareDownload(Download download) {
-        // If the chapter is already queued, don't add it again
-        for (Download queuedDownload : queue) {
-            if (download.chapter.id.equals(queuedDownload.chapter.id))
-                return true;
-        }
-
-        // Add the directory to the download object for future access
-        download.directory = getAbsoluteChapterDirectory(download);
-
-        // If the directory doesn't exist, the chapter isn't downloaded.
-        if (!download.directory.exists()) {
-            return false;
-        }
-
-        // If the page list doesn't exist, the chapter isn't downloaded
-        List<Page> savedPages = getSavedPageList(download);
-        if (savedPages == null)
-            return false;
-
-        // Add the page list to the download object for future access
-        download.pages = savedPages;
-
-        // If the number of files matches the number of pages, the chapter is downloaded.
-        // We have the index file, so we check one file more
-        return isChapterDownloaded(download.directory, download.pages);
-    }
-
-    // Check that all the images are downloaded
-    private boolean isChapterDownloaded(File directory, List<Page> pages) {
-        return pages != null && !pages.isEmpty() && pages.size() + 1 == directory.listFiles().length;
-    }
-
-    // Download the entire chapter
-    private Observable<Download> downloadChapter(Download download) {
-        try {
-            DiskUtils.createDirectory(download.directory);
-        } catch (IOException e) {
-            return Observable.error(e);
-        }
-
-        Observable<List<Page>> pageListObservable = download.pages == null ?
-                // Pull page list from network and add them to download object
-                download.source
-                        .pullPageListFromNetwork(download.chapter.url)
-                        .doOnNext(pages -> download.pages = pages)
-                        .doOnNext(pages -> savePageList(download)) :
-                // Or if the page list already exists, start from the file
-                Observable.just(download.pages);
-
-        return pageListObservable
-                .subscribeOn(Schedulers.io())
-                .doOnNext(pages -> {
-                    download.downloadedImages = 0;
-                    download.setStatus(Download.DOWNLOADING);
-                })
-                // Get all the URLs to the source images, fetch pages if necessary
-                .flatMap(download.source::getAllImageUrlsFromPageList)
-                // Start downloading images, consider we can have downloaded images already
-                .concatMap(page -> getOrDownloadImage(page, download))
-                // Do after download completes
-                .doOnCompleted(() -> onDownloadCompleted(download))
-                .toList()
-                .map(pages -> download)
-                // If the page list threw, it will resume here
-                .onErrorResumeNext(error -> {
-                    download.setStatus(Download.ERROR);
-                    return Observable.just(download);
-                });
-    }
-
-    // Get the image from the filesystem if it exists or download from network
-    private Observable<Page> getOrDownloadImage(final Page page, Download download) {
-        // If the image URL is empty, do nothing
-        if (page.getImageUrl() == null)
-            return Observable.just(page);
-
-        String filename = getImageFilename(page);
-        File imagePath = new File(download.directory, filename);
-
-        // If the image is already downloaded, do nothing. Otherwise download from network
-        Observable<Page> pageObservable = isImageDownloaded(imagePath) ?
-                Observable.just(page) :
-                downloadImage(page, download.source, download.directory, filename);
-
-        return pageObservable
-                // When the image is ready, set image path, progress (just in case) and status
-                .doOnNext(p -> {
-                    page.setImagePath(imagePath.getAbsolutePath());
-                    page.setProgress(100);
-                    download.downloadedImages++;
-                    page.setStatus(Page.READY);
-                })
-                // Mark this page as error and allow to download the remaining
-                .onErrorResumeNext(e -> {
-                    page.setProgress(0);
-                    page.setStatus(Page.ERROR);
-                    return Observable.just(page);
-                });
-    }
-
-    // Save image on disk
-    private Observable<Page> downloadImage(Page page, Source source, File directory, String filename) {
-        page.setStatus(Page.DOWNLOAD_IMAGE);
-        return source.getImageProgressResponse(page)
-                .flatMap(resp -> {
-                    try {
-                        DiskUtils.saveBufferedSourceToDirectory(resp.body().source(), directory, filename);
-                    } catch (Exception e) {
-                        Timber.e(e.getCause(), e.getMessage());
-                        return Observable.error(e);
-                    }
-                    return Observable.just(page);
-                })
-                .retry(2);
-    }
-
-    // Public method to get the image from the filesystem. It does NOT provide any way to download the image
-    public Observable<Page> getDownloadedImage(final Page page, File chapterDir) {
-        if (page.getImageUrl() == null) {
-            page.setStatus(Page.ERROR);
-            return Observable.just(page);
-        }
-
-        File imagePath = new File(chapterDir, getImageFilename(page));
-
-        // When the image is ready, set image path, progress (just in case) and status
-        if (isImageDownloaded(imagePath)) {
-            page.setImagePath(imagePath.getAbsolutePath());
-            page.setProgress(100);
-            page.setStatus(Page.READY);
-        } else {
-            page.setStatus(Page.ERROR);
-        }
-        return Observable.just(page);
-    }
-
-    // Get the filename for an image given the page
-    private String getImageFilename(Page page) {
-        String url = page.getImageUrl();
-        return Uri.parse(url).getLastPathSegment();
-    }
-
-    private boolean isImageDownloaded(File imagePath) {
-        return imagePath.exists();
-    }
-
-    // Called when a download finishes. This doesn't mean the download was successful, so we check it
-    private void onDownloadCompleted(final Download download) {
-        checkDownloadIsSuccessful(download);
-        savePageList(download);
-    }
-
-    private void checkDownloadIsSuccessful(final Download download) {
-        int actualProgress = 0;
-        int status = Download.DOWNLOADED;
-        // If any page has an error, the download result will be error
-        for (Page page : download.pages) {
-            actualProgress += page.getProgress();
-            if (page.getStatus() != Page.READY) status = Download.ERROR;
-        }
-        // Ensure that the chapter folder has all the images
-        if (!isChapterDownloaded(download.directory, download.pages)) {
-            status = Download.ERROR;
-        }
-        download.totalProgress = actualProgress;
-        download.setStatus(status);
-        // Delete successful downloads from queue after notifying
-        if (status == Download.DOWNLOADED) {
-            queue.remove(download);
-        }
-    }
-
-    // Return the page list from the chapter's directory if it exists, null otherwise
-    public List<Page> getSavedPageList(Source source, Manga manga, Chapter chapter) {
-        List<Page> pages = null;
-        File chapterDir = getAbsoluteChapterDirectory(source, manga, chapter);
-        File pagesFile = new File(chapterDir, PAGE_LIST_FILE);
-
-        JsonReader reader = null;
-        try {
-            if (pagesFile.exists()) {
-                reader = new JsonReader(new FileReader(pagesFile.getAbsolutePath()));
-                Type collectionType = new TypeToken<List<Page>>() {}.getType();
-                pages = gson.fromJson(reader, collectionType);
-            }
-        } catch (FileNotFoundException e) {
-            Timber.e(e.getCause(), e.getMessage());
-        } finally {
-            if (reader != null) try { reader.close(); } catch (IOException e) { /* Do nothing */ }
-        }
-        return pages;
-    }
-
-    // Shortcut for the method above
-    private List<Page> getSavedPageList(Download download) {
-        return getSavedPageList(download.source, download.manga, download.chapter);
-    }
-
-    // Save the page list to the chapter's directory
-    public void savePageList(Source source, Manga manga, Chapter chapter, List<Page> pages) {
-        File chapterDir = getAbsoluteChapterDirectory(source, manga, chapter);
-        File pagesFile = new File(chapterDir, PAGE_LIST_FILE);
-
-        FileOutputStream out = null;
-        try {
-            out = new FileOutputStream(pagesFile);
-            out.write(gson.toJson(pages).getBytes());
-            out.flush();
-        } catch (IOException e) {
-            Timber.e(e.getCause(), e.getMessage());
-        } finally {
-            if (out != null) try { out.close(); } catch (IOException e) { /* Do nothing */ }
-        }
-    }
-
-    // Shortcut for the method above
-    private void savePageList(Download download) {
-        savePageList(download.source, download.manga, download.chapter, download.pages);
-    }
-
-    // Get the absolute path to the chapter directory
-    public File getAbsoluteChapterDirectory(Source source, Manga manga, Chapter chapter) {
-        String chapterRelativePath = source.getName() +
-                File.separator +
-                manga.title.replaceAll("[^\\sa-zA-Z0-9.-]", "_") +
-                File.separator +
-                chapter.name.replaceAll("[^\\sa-zA-Z0-9.-]", "_");
-
-        return new File(preferences.getDownloadsDirectory(), chapterRelativePath);
-    }
-
-    // Shortcut for the method above
-    private File getAbsoluteChapterDirectory(Download download) {
-        return getAbsoluteChapterDirectory(download.source, download.manga, download.chapter);
-    }
-
-    public void deleteChapter(Source source, Manga manga, Chapter chapter) {
-        File path = getAbsoluteChapterDirectory(source, manga, chapter);
-        DiskUtils.deleteFiles(path);
-    }
-
-    public DownloadQueue getQueue() {
-        return queue;
-    }
-
-    public boolean areAllDownloadsFinished() {
-        for (Download download : queue) {
-            if (download.getStatus() <= Download.DOWNLOADING)
-                return false;
-        }
-        return true;
-    }
-
-    public boolean startDownloads() {
-        if (queue.isEmpty())
-            return false;
-
-        boolean hasPendingDownloads = false;
-        if (downloadsSubscription == null)
-            initializeSubscriptions();
-
-        for (Download download : queue) {
-            if (download.getStatus() != Download.DOWNLOADED) {
-                if (download.getStatus() != Download.QUEUE) download.setStatus(Download.QUEUE);
-                if (!hasPendingDownloads) hasPendingDownloads = true;
-                downloadsQueueSubject.onNext(download);
-            }
-        }
-        return hasPendingDownloads;
-    }
-
-    public void stopDownloads() {
-        destroySubscriptions();
-        for (Download download : queue) {
-            if (download.getStatus() == Download.DOWNLOADING) {
-                download.setStatus(Download.ERROR);
-            }
-        }
-    }
-
-    public BehaviorSubject<Boolean> getRunningSubject() {
-        return runningSubject;
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadManager.kt

@@ -0,0 +1,450 @@
+package eu.kanade.tachiyomi.data.download
+
+import android.content.Context
+import android.net.Uri
+import com.google.gson.Gson
+import com.google.gson.reflect.TypeToken
+import com.google.gson.stream.JsonReader
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.download.model.Download
+import eu.kanade.tachiyomi.data.download.model.DownloadQueue
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.preference.getOrDefault
+import eu.kanade.tachiyomi.data.source.Source
+import eu.kanade.tachiyomi.data.source.SourceManager
+import eu.kanade.tachiyomi.data.source.model.Page
+import eu.kanade.tachiyomi.data.source.online.OnlineSource
+import eu.kanade.tachiyomi.util.*
+import rx.Observable
+import rx.Subscription
+import rx.android.schedulers.AndroidSchedulers
+import rx.schedulers.Schedulers
+import rx.subjects.BehaviorSubject
+import rx.subjects.PublishSubject
+import timber.log.Timber
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
+import java.io.File
+import java.io.FileReader
+import java.util.*
+
+class DownloadManager(
+        private val context: Context,
+        private val sourceManager: SourceManager = Injekt.get(),
+        private val preferences: PreferencesHelper = Injekt.get()
+) {
+
+    private val gson = Gson()
+
+    private val downloadsQueueSubject = PublishSubject.create<List<Download>>()
+    val runningSubject = BehaviorSubject.create<Boolean>()
+    private var downloadsSubscription: Subscription? = null
+
+    val downloadNotifier by lazy { DownloadNotifier(context) }
+
+    private val threadsSubject = BehaviorSubject.create<Int>()
+    private var threadsSubscription: Subscription? = null
+
+    val queue = DownloadQueue()
+
+    val imageFilenameRegex = "[^\\sa-zA-Z0-9.-]".toRegex()
+
+    val PAGE_LIST_FILE = "index.json"
+
+    @Volatile var isRunning: Boolean = false
+        private set
+
+    private fun initializeSubscriptions() {
+
+        downloadsSubscription?.unsubscribe()
+
+        threadsSubscription = preferences.downloadThreads().asObservable()
+                .subscribe {
+                    threadsSubject.onNext(it)
+                    downloadNotifier.multipleDownloadThreads = it > 1
+                }
+
+        downloadsSubscription = downloadsQueueSubject.flatMap { Observable.from(it) }
+                .lift(DynamicConcurrentMergeOperator<Download, Download>({ downloadChapter(it) }, threadsSubject))
+                .onBackpressureBuffer()
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({
+                    // Delete successful downloads from queue
+                    if (it.status == Download.DOWNLOADED) {
+                        // remove downloaded chapter from queue
+                        queue.del(it)
+                        downloadNotifier.onProgressChange(queue)
+                    }
+                    if (areAllDownloadsFinished()) {
+                        DownloadService.stop(context)
+                    }
+                }, { e ->
+                    DownloadService.stop(context)
+                    Timber.e(e, e.message)
+                    downloadNotifier.onError(e.message)
+                })
+
+        if (!isRunning) {
+            isRunning = true
+            runningSubject.onNext(true)
+        }
+    }
+
+    fun destroySubscriptions() {
+        if (isRunning) {
+            isRunning = false
+            runningSubject.onNext(false)
+        }
+
+        if (downloadsSubscription != null) {
+            downloadsSubscription?.unsubscribe()
+            downloadsSubscription = null
+        }
+
+        if (threadsSubscription != null) {
+            threadsSubscription?.unsubscribe()
+        }
+
+    }
+
+    // Create a download object for every chapter and add them to the downloads queue
+    fun downloadChapters(manga: Manga, chapters: List<Chapter>) {
+        val source = sourceManager.get(manga.source) as? OnlineSource ?: return
+
+        // Add chapters to queue from the start
+        val sortedChapters = chapters.sortedByDescending { it.source_order }
+
+        // Used to avoid downloading chapters with the same name
+        val addedChapters = ArrayList<String>()
+        val pending = ArrayList<Download>()
+
+        for (chapter in sortedChapters) {
+            if (addedChapters.contains(chapter.name))
+                continue
+
+            addedChapters.add(chapter.name)
+            val download = Download(source, manga, chapter)
+
+            if (!prepareDownload(download)) {
+                queue.add(download)
+                pending.add(download)
+            }
+        }
+
+        // Initialize queue size
+        downloadNotifier.initialQueueSize = queue.size
+        // Show notification
+        downloadNotifier.onProgressChange(queue)
+
+        if (isRunning) downloadsQueueSubject.onNext(pending)
+    }
+
+    // Public method to check if a chapter is downloaded
+    fun isChapterDownloaded(source: Source, manga: Manga, chapter: Chapter): Boolean {
+        val directory = getAbsoluteChapterDirectory(source, manga, chapter)
+        if (!directory.exists())
+            return false
+
+        val pages = getSavedPageList(source, manga, chapter)
+        return isChapterDownloaded(directory, pages)
+    }
+
+    // Prepare the download. Returns true if the chapter is already downloaded
+    private fun prepareDownload(download: Download): Boolean {
+        // If the chapter is already queued, don't add it again
+        for (queuedDownload in queue) {
+            if (download.chapter.id == queuedDownload.chapter.id)
+                return true
+        }
+
+        // Add the directory to the download object for future access
+        download.directory = getAbsoluteChapterDirectory(download)
+
+        // If the directory doesn't exist, the chapter isn't downloaded.
+        if (!download.directory.exists()) {
+            return false
+        }
+
+        // If the page list doesn't exist, the chapter isn't downloaded
+        val savedPages = getSavedPageList(download) ?: return false
+
+        // Add the page list to the download object for future access
+        download.pages = savedPages
+
+        // If the number of files matches the number of pages, the chapter is downloaded.
+        // We have the index file, so we check one file more
+        return isChapterDownloaded(download.directory, download.pages)
+    }
+
+    // Check that all the images are downloaded
+    private fun isChapterDownloaded(directory: File, pages: List<Page>?): Boolean {
+        return pages != null && !pages.isEmpty() && pages.size + 1 == directory.listFiles().size
+    }
+
+    // Download the entire chapter
+    private fun downloadChapter(download: Download): Observable<Download> {
+        DiskUtils.createDirectory(download.directory)
+
+        val pageListObservable: Observable<List<Page>> = if (download.pages == null)
+            // Pull page list from network and add them to download object
+            download.source.fetchPageListFromNetwork(download.chapter)
+                    .doOnNext { pages ->
+                        download.pages = pages
+                        savePageList(download)
+                    }
+        else
+        // Or if the page list already exists, start from the file
+            Observable.just(download.pages)
+
+        return Observable.defer {
+            pageListObservable
+                    .doOnNext { pages ->
+                        download.downloadedImages = 0
+                        download.status = Download.DOWNLOADING
+                    }
+                    // Get all the URLs to the source images, fetch pages if necessary
+                    .flatMap { download.source.fetchAllImageUrlsFromPageList(it) }
+                    // Start downloading images, consider we can have downloaded images already
+                    .concatMap { page -> getOrDownloadImage(page, download) }
+                    // Do when page is downloaded.
+                    .doOnNext {
+                        downloadNotifier.onProgressChange(download, queue)
+                    }
+                    // Do after download completes
+                    .doOnCompleted { onDownloadCompleted(download) }
+                    .toList()
+                    .map { pages -> download }
+                    // If the page list threw, it will resume here
+                    .onErrorResumeNext { error ->
+                        download.status = Download.ERROR
+                        downloadNotifier.onError(error.message, download.chapter.name)
+                        Observable.just(download)
+                    }
+        }.subscribeOn(Schedulers.io())
+    }
+
+    // Get the image from the filesystem if it exists or download from network
+    private fun getOrDownloadImage(page: Page, download: Download): Observable<Page> {
+        // If the image URL is empty, do nothing
+        if (page.imageUrl == null)
+            return Observable.just(page)
+
+        val filename = getImageFilename(page)
+        val imagePath = File(download.directory, filename)
+
+        // If the image is already downloaded, do nothing. Otherwise download from network
+        val pageObservable = if (isImageDownloaded(imagePath))
+            Observable.just(page)
+        else
+            downloadImage(page, download.source, download.directory, filename)
+
+        return pageObservable
+                // When the image is ready, set image path, progress (just in case) and status
+                .doOnNext {
+                    page.imagePath = imagePath.absolutePath
+                    page.progress = 100
+                    download.downloadedImages++
+                    page.status = Page.READY
+                }
+                // Mark this page as error and allow to download the remaining
+                .onErrorResumeNext {
+                    page.progress = 0
+                    page.status = Page.ERROR
+                    Observable.just(page)
+                }
+    }
+
+    // Save image on disk
+    private fun downloadImage(page: Page, source: OnlineSource, directory: File, filename: String): Observable<Page> {
+        page.status = Page.DOWNLOAD_IMAGE
+        return source.imageResponse(page)
+                .map {
+                    val file = File(directory, filename)
+                    try {
+                        file.parentFile.mkdirs()
+                        it.body().source().saveImageTo(file.outputStream(), preferences.reencodeImage())
+                    } catch (e: Exception) {
+                        it.close()
+                        file.delete()
+                        throw e
+                    }
+                    page
+                }
+                // Retry 3 times, waiting 2, 4 and 8 seconds between attempts.
+                .retryWhen(RetryWithDelay(3, { (2 shl it - 1) * 1000 }, Schedulers.trampoline()))
+    }
+
+    // Public method to get the image from the filesystem. It does NOT provide any way to download the image
+    fun getDownloadedImage(page: Page, chapterDir: File): Observable<Page> {
+        if (page.imageUrl == null) {
+            page.status = Page.ERROR
+            return Observable.just(page)
+        }
+
+        val imagePath = File(chapterDir, getImageFilename(page))
+
+        // When the image is ready, set image path, progress (just in case) and status
+        if (isImageDownloaded(imagePath)) {
+            page.imagePath = imagePath.absolutePath
+            page.progress = 100
+            page.status = Page.READY
+        } else {
+            page.status = Page.ERROR
+        }
+        return Observable.just(page)
+    }
+
+    // Get the filename for an image given the page
+    private fun getImageFilename(page: Page): String {
+        val url = page.imageUrl
+        val number = String.format("%03d", page.pageNumber + 1)
+
+        // Try to preserve file extension
+        return when {
+            UrlUtil.isJpg(url) -> "$number.jpg"
+            UrlUtil.isPng(url) -> "$number.png"
+            UrlUtil.isGif(url) -> "$number.gif"
+            else -> Uri.parse(url).lastPathSegment.replace(imageFilenameRegex, "_")
+        }
+    }
+
+    private fun isImageDownloaded(imagePath: File): Boolean {
+        return imagePath.exists()
+    }
+
+    // Called when a download finishes. This doesn't mean the download was successful, so we check it
+    private fun onDownloadCompleted(download: Download) {
+        checkDownloadIsSuccessful(download)
+        savePageList(download)
+    }
+
+    private fun checkDownloadIsSuccessful(download: Download) {
+        var actualProgress = 0
+        var status = Download.DOWNLOADED
+        // If any page has an error, the download result will be error
+        for (page in download.pages!!) {
+            actualProgress += page.progress
+            if (page.status != Page.READY) {
+                status = Download.ERROR
+                downloadNotifier.onError(context.getString(R.string.download_notifier_page_ready_error), download.chapter.name)
+            }
+        }
+        // Ensure that the chapter folder has all the images
+        if (!isChapterDownloaded(download.directory, download.pages)) {
+            status = Download.ERROR
+            downloadNotifier.onError(context.getString(R.string.download_notifier_page_error), download.chapter.name)
+        }
+        download.totalProgress = actualProgress
+        download.status = status
+    }
+
+    // Return the page list from the chapter's directory if it exists, null otherwise
+    fun getSavedPageList(source: Source, manga: Manga, chapter: Chapter): List<Page>? {
+        val chapterDir = getAbsoluteChapterDirectory(source, manga, chapter)
+        val pagesFile = File(chapterDir, PAGE_LIST_FILE)
+
+        return try {
+            JsonReader(FileReader(pagesFile)).use {
+                val collectionType = object : TypeToken<List<Page>>() {}.type
+                gson.fromJson(it, collectionType)
+            }
+        } catch (e: Exception) {
+            null
+        }
+    }
+
+    // Shortcut for the method above
+    private fun getSavedPageList(download: Download): List<Page>? {
+        return getSavedPageList(download.source, download.manga, download.chapter)
+    }
+
+    // Save the page list to the chapter's directory
+    fun savePageList(source: Source, manga: Manga, chapter: Chapter, pages: List<Page>) {
+        val chapterDir = getAbsoluteChapterDirectory(source, manga, chapter)
+        val pagesFile = File(chapterDir, PAGE_LIST_FILE)
+
+        pagesFile.outputStream().use {
+            try {
+                it.write(gson.toJson(pages).toByteArray())
+                it.flush()
+            } catch (e: Exception) {
+                Timber.e(e, e.message)
+            }
+        }
+    }
+
+    // Shortcut for the method above
+    private fun savePageList(download: Download) {
+        savePageList(download.source, download.manga, download.chapter, download.pages!!)
+    }
+
+    fun getAbsoluteMangaDirectory(source: Source, manga: Manga): File {
+        val mangaRelativePath = source.toString() +
+                File.separator +
+                manga.title.replace("[^\\sa-zA-Z0-9.-]".toRegex(), "_")
+
+        return File(preferences.downloadsDirectory().getOrDefault(), mangaRelativePath)
+    }
+
+    // Get the absolute path to the chapter directory
+    fun getAbsoluteChapterDirectory(source: Source, manga: Manga, chapter: Chapter): File {
+        val chapterRelativePath = chapter.name.replace("[^\\sa-zA-Z0-9.-]".toRegex(), "_")
+
+        return File(getAbsoluteMangaDirectory(source, manga), chapterRelativePath)
+    }
+
+    // Shortcut for the method above
+    private fun getAbsoluteChapterDirectory(download: Download): File {
+        return getAbsoluteChapterDirectory(download.source, download.manga, download.chapter)
+    }
+
+    fun deleteChapter(source: Source, manga: Manga, chapter: Chapter) {
+        val path = getAbsoluteChapterDirectory(source, manga, chapter)
+        DiskUtils.deleteFiles(path)
+    }
+
+    fun areAllDownloadsFinished(): Boolean {
+        for (download in queue) {
+            if (download.status <= Download.DOWNLOADING)
+                return false
+        }
+        return true
+    }
+
+    fun startDownloads(): Boolean {
+        if (queue.isEmpty())
+            return false
+
+        if (downloadsSubscription == null || downloadsSubscription!!.isUnsubscribed)
+            initializeSubscriptions()
+
+        val pending = ArrayList<Download>()
+        for (download in queue) {
+            if (download.status != Download.DOWNLOADED) {
+                if (download.status != Download.QUEUE) download.status = Download.QUEUE
+                pending.add(download)
+            }
+        }
+        downloadsQueueSubject.onNext(pending)
+
+        return !pending.isEmpty()
+    }
+
+    fun stopDownloads(errorMessage: String? = null) {
+        destroySubscriptions()
+        for (download in queue) {
+            if (download.status == Download.DOWNLOADING) {
+                download.status = Download.ERROR
+            }
+        }
+        errorMessage?.let { downloadNotifier.onError(it) }
+    }
+
+    fun clearQueue() {
+        queue.clear()
+        downloadNotifier.onClear()
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadNotifier.kt

@@ -0,0 +1,166 @@
+package eu.kanade.tachiyomi.data.download
+
+import android.content.Context
+import android.support.v4.app.NotificationCompat
+import eu.kanade.tachiyomi.Constants
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.download.model.Download
+import eu.kanade.tachiyomi.data.download.model.DownloadQueue
+import eu.kanade.tachiyomi.util.notificationManager
+
+/**
+ * DownloadNotifier is used to show notifications when downloading one or multiple chapters.
+ *
+ * @param context context of application
+ */
+class DownloadNotifier(private val context: Context) {
+    /**
+     * Notification builder.
+     */
+    private val notificationBuilder = NotificationCompat.Builder(context)
+
+    /**
+     * Id of the notification.
+     */
+    private val notificationId: Int
+        get() = Constants.NOTIFICATION_DOWNLOAD_CHAPTER_ID
+
+    /**
+     * Status of download. Used for correct notification icon.
+     */
+    private var isDownloading = false
+
+    /**
+     * The size of queue on start download.
+     */
+    internal var initialQueueSize = 0
+
+    /**
+     * Simultaneous download setting > 1.
+     */
+    internal var multipleDownloadThreads = false
+
+    /**
+     * Called when download progress changes.
+     * Note: Only accepted when multi download active.
+     *
+     * @param queue the queue containing downloads.
+     */
+    internal fun onProgressChange(queue: DownloadQueue) {
+        if (multipleDownloadThreads) {
+            doOnProgressChange(null, queue)
+        }
+    }
+
+    /**
+     * Called when download progress changes
+     * Note: Only accepted when single download active
+     *
+     * @param download download object containing download information
+     * @param queue the queue containing downloads
+     */
+    internal fun onProgressChange(download: Download, queue: DownloadQueue) {
+        if (!multipleDownloadThreads) {
+            doOnProgressChange(download, queue)
+        }
+    }
+
+    /**
+     * Show notification progress of chapter
+     *
+     * @param download download object containing download information
+     * @param queue the queue containing downloads
+     */
+    private fun doOnProgressChange(download: Download?, queue: DownloadQueue) {
+        // Check if download is completed
+        if (multipleDownloadThreads) {
+            if (queue.isEmpty()) {
+                onComplete(null)
+                return
+            }
+        } else {
+            if (download != null && download.pages!!.size == download.downloadedImages) {
+                onComplete(download)
+                return
+            }
+        }
+
+        // Create notification
+        with (notificationBuilder) {
+            // Check if icon needs refresh
+            if (!isDownloading) {
+                setSmallIcon(android.R.drawable.stat_sys_download)
+                isDownloading = true
+            }
+
+            if (multipleDownloadThreads) {
+                setContentTitle(context.getString(R.string.app_name))
+
+                setContentText(context.getString(R.string.chapter_downloading_progress)
+                        .format(initialQueueSize - queue.size, initialQueueSize))
+                setProgress(initialQueueSize, initialQueueSize - queue.size, false)
+            } else {
+                download?.let {
+                    if (it.chapter.name.length >= 33)
+                        setContentTitle(it.chapter.name.slice(IntRange(0, 30)).plus("..."))
+                    else
+                        setContentTitle(it.chapter.name)
+
+                    setContentText(context.getString(R.string.chapter_downloading_progress)
+                            .format(it.downloadedImages, it.pages!!.size))
+                    setProgress(it.pages!!.size, it.downloadedImages, false)
+
+                }
+            }
+        }
+        // Displays the progress bar on notification
+        context.notificationManager.notify(notificationId, notificationBuilder.build())
+    }
+
+    /**
+     * Called when chapter is downloaded
+     *
+     * @param download download object containing download information
+     */
+    private fun onComplete(download: Download?) {
+        // Create notification.
+        with(notificationBuilder) {
+            setContentTitle(download?.chapter?.name ?: context.getString(R.string.app_name))
+            setContentText(context.getString(R.string.update_check_notification_download_complete))
+            setSmallIcon(android.R.drawable.stat_sys_download_done)
+            setProgress(0, 0, false)
+        }
+
+        // Show notification.
+        context.notificationManager.notify(notificationId, notificationBuilder.build())
+
+        // Reset initial values
+        isDownloading = false
+        initialQueueSize = 0
+    }
+
+    /**
+     * Clears the notification message
+     */
+    internal fun onClear() {
+        context.notificationManager.cancel(notificationId)
+    }
+
+    /**
+     * Called on error while downloading chapter
+     *
+     * @param error string containing error information
+     * @param chapter string containing chapter title
+     */
+    internal fun onError(error: String? = null, chapter: String? = null) {
+        // Create notification
+        with(notificationBuilder) {
+            setContentTitle(chapter ?: context.getString(R.string.download_notifier_title_error))
+            setContentText(error ?: context.getString(R.string.download_notifier_unkown_error))
+            setSmallIcon(android.R.drawable.stat_sys_warning)
+            setProgress(0, 0, false)
+        }
+        context.notificationManager.notify(Constants.NOTIFICATION_DOWNLOAD_CHAPTER_ERROR_ID, notificationBuilder.build())
+        isDownloading = false
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadService.java

@@ -1,149 +0,0 @@
-package eu.kanade.tachiyomi.data.download;
-
-import android.app.Service;
-import android.content.Context;
-import android.content.Intent;
-import android.os.IBinder;
-import android.os.PowerManager;
-
-import com.github.pwittchen.reactivenetwork.library.ReactiveNetwork;
-
-import javax.inject.Inject;
-
-import de.greenrobot.event.EventBus;
-import eu.kanade.tachiyomi.App;
-import eu.kanade.tachiyomi.R;
-import eu.kanade.tachiyomi.data.preference.PreferencesHelper;
-import eu.kanade.tachiyomi.event.DownloadChaptersEvent;
-import eu.kanade.tachiyomi.util.EventBusHook;
-import eu.kanade.tachiyomi.util.ToastUtil;
-import rx.Subscription;
-import rx.android.schedulers.AndroidSchedulers;
-import rx.schedulers.Schedulers;
-
-public class DownloadService extends Service {
-
-    @Inject DownloadManager downloadManager;
-    @Inject PreferencesHelper preferences;
-
-    private PowerManager.WakeLock wakeLock;
-    private Subscription networkChangeSubscription;
-    private Subscription queueRunningSubscription;
-    private boolean isRunning;
-
-    public static void start(Context context) {
-        context.startService(new Intent(context, DownloadService.class));
-    }
-
-    public static void stop(Context context) {
-        context.stopService(new Intent(context, DownloadService.class));
-    }
-
-    @Override
-    public void onCreate() {
-        super.onCreate();
-        App.get(this).getComponent().inject(this);
-
-        createWakeLock();
-
-        listenQueueRunningChanges();
-        EventBus.getDefault().registerSticky(this);
-        listenNetworkChanges();
-    }
-
-    @Override
-    public int onStartCommand(Intent intent, int flags, int startId) {
-        return START_STICKY;
-    }
-
-    @Override
-    public void onDestroy() {
-        EventBus.getDefault().unregister(this);
-        queueRunningSubscription.unsubscribe();
-        networkChangeSubscription.unsubscribe();
-        downloadManager.destroySubscriptions();
-        destroyWakeLock();
-        super.onDestroy();
-    }
-
-    @Override
-    public IBinder onBind(Intent intent) {
-        return null;
-    }
-
-    @EventBusHook
-    public void onEvent(DownloadChaptersEvent event) {
-        EventBus.getDefault().removeStickyEvent(event);
-        downloadManager.onDownloadChaptersEvent(event);
-    }
-
-    private void listenNetworkChanges() {
-        networkChangeSubscription = new ReactiveNetwork().enableInternetCheck()
-                .observeConnectivity(getApplicationContext())
-                .subscribeOn(Schedulers.io())
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(state -> {
-                    switch (state) {
-                        case WIFI_CONNECTED_HAS_INTERNET:
-                            // If there are no remaining downloads, destroy the service
-                            if (!isRunning && !downloadManager.startDownloads()) {
-                                stopSelf();
-                            }
-                            break;
-                        case MOBILE_CONNECTED:
-                            if (!preferences.downloadOnlyOverWifi()) {
-                                if (!isRunning && !downloadManager.startDownloads()) {
-                                    stopSelf();
-                                }
-                            } else if (isRunning) {
-                                downloadManager.stopDownloads();
-                            }
-                            break;
-                        default:
-                            if (isRunning) {
-                                downloadManager.stopDownloads();
-                            }
-                            break;
-                    }
-                }, error -> {
-                    ToastUtil.showShort(this, R.string.download_queue_error);
-                    stopSelf();
-                });
-    }
-
-    private void listenQueueRunningChanges() {
-        queueRunningSubscription = downloadManager.getRunningSubject()
-                .subscribe(running -> {
-                    isRunning = running;
-                    if (running)
-                        acquireWakeLock();
-                    else
-                        releaseWakeLock();
-                });
-    }
-
-    private void createWakeLock() {
-        wakeLock = ((PowerManager)getSystemService(POWER_SERVICE)).newWakeLock(
-                PowerManager.PARTIAL_WAKE_LOCK, "DownloadService:WakeLock");
-    }
-
-    private void destroyWakeLock() {
-        if (wakeLock != null && wakeLock.isHeld()) {
-            wakeLock.release();
-            wakeLock = null;
-        }
-    }
-
-    public void acquireWakeLock() {
-        if (wakeLock != null && !wakeLock.isHeld()) {
-            wakeLock.acquire();
-        }
-    }
-
-    public void releaseWakeLock() {
-        if (wakeLock != null && wakeLock.isHeld()) {
-            wakeLock.release();
-        }
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadService.kt

@@ -0,0 +1,132 @@
+package eu.kanade.tachiyomi.data.download
+
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.IBinder
+import android.os.PowerManager
+import com.github.pwittchen.reactivenetwork.library.ConnectivityStatus
+import com.github.pwittchen.reactivenetwork.library.ReactiveNetwork
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.util.toast
+import rx.Subscription
+import rx.android.schedulers.AndroidSchedulers
+import rx.schedulers.Schedulers
+import uy.kohesive.injekt.injectLazy
+
+class DownloadService : Service() {
+
+    companion object {
+
+        fun start(context: Context) {
+            context.startService(Intent(context, DownloadService::class.java))
+        }
+
+        fun stop(context: Context) {
+            context.stopService(Intent(context, DownloadService::class.java))
+        }
+    }
+
+    val downloadManager: DownloadManager by injectLazy()
+    val preferences: PreferencesHelper by injectLazy()
+
+    private var wakeLock: PowerManager.WakeLock? = null
+    private var networkChangeSubscription: Subscription? = null
+    private var queueRunningSubscription: Subscription? = null
+    private var isRunning: Boolean = false
+
+    override fun onCreate() {
+        super.onCreate()
+
+        createWakeLock()
+
+        listenQueueRunningChanges()
+        listenNetworkChanges()
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        return Service.START_STICKY
+    }
+
+    override fun onDestroy() {
+        queueRunningSubscription?.unsubscribe()
+        networkChangeSubscription?.unsubscribe()
+        downloadManager.destroySubscriptions()
+        destroyWakeLock()
+        super.onDestroy()
+    }
+
+    override fun onBind(intent: Intent): IBinder? {
+        return null
+    }
+
+    private fun listenNetworkChanges() {
+        networkChangeSubscription = ReactiveNetwork().enableInternetCheck()
+                .observeConnectivity(applicationContext)
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({ state ->
+                    when (state) {
+                        ConnectivityStatus.WIFI_CONNECTED_HAS_INTERNET -> {
+                            // If there are no remaining downloads, destroy the service
+                            if (!isRunning && !downloadManager.startDownloads()) {
+                                stopSelf()
+                            }
+                        }
+                        ConnectivityStatus.MOBILE_CONNECTED -> {
+                            if (!preferences.downloadOnlyOverWifi()) {
+                                if (!isRunning && !downloadManager.startDownloads()) {
+                                    stopSelf()
+                                }
+                            } else if (isRunning) {
+                                downloadManager.stopDownloads(getString(R.string.download_notifier_text_only_wifi))
+                            }
+                        }
+                        else -> {
+                            if (isRunning) {
+                                downloadManager.stopDownloads(getString(R.string.download_notifier_text_only_wifi))
+                            }
+                        }
+                    }
+                }, { error ->
+                    toast(R.string.download_queue_error)
+                    stopSelf()
+                })
+    }
+
+    private fun listenQueueRunningChanges() {
+        queueRunningSubscription = downloadManager.runningSubject.subscribe { running ->
+            isRunning = running
+            if (running)
+                acquireWakeLock()
+            else
+                releaseWakeLock()
+        }
+    }
+
+    private fun createWakeLock() {
+        wakeLock = (getSystemService(Context.POWER_SERVICE) as PowerManager).newWakeLock(
+                PowerManager.PARTIAL_WAKE_LOCK, "DownloadService:WakeLock")
+    }
+
+    private fun destroyWakeLock() {
+        if (wakeLock != null && wakeLock!!.isHeld) {
+            wakeLock!!.release()
+            wakeLock = null
+        }
+    }
+
+    fun acquireWakeLock() {
+        if (wakeLock != null && !wakeLock!!.isHeld) {
+            wakeLock!!.acquire()
+        }
+    }
+
+    fun releaseWakeLock() {
+        if (wakeLock != null && wakeLock!!.isHeld) {
+            wakeLock!!.release()
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/download/model/Download.java

@@ -1,55 +0,0 @@
-package eu.kanade.tachiyomi.data.download.model;
-
-import java.io.File;
-import java.util.List;
-
-import eu.kanade.tachiyomi.data.database.models.Chapter;
-import eu.kanade.tachiyomi.data.database.models.Manga;
-import eu.kanade.tachiyomi.data.source.base.Source;
-import eu.kanade.tachiyomi.data.source.model.Page;
-import rx.subjects.PublishSubject;
-
-public class Download {
-    public Source source;
-    public Manga manga;
-    public Chapter chapter;
-    public List<Page> pages;
-    public File directory;
-
-    public transient volatile int totalProgress;
-    public transient volatile int downloadedImages;
-    private transient volatile int status;
-
-    private transient PublishSubject<Download> statusSubject;
-
-    public static final int NOT_DOWNLOADED = 0;
-    public static final int QUEUE = 1;
-    public static final int DOWNLOADING = 2;
-    public static final int DOWNLOADED = 3;
-    public static final int ERROR = 4;
-
-
-    public Download(Source source, Manga manga, Chapter chapter) {
-        this.source = source;
-        this.manga = manga;
-        this.chapter = chapter;
-    }
-
-    public int getStatus() {
-        return status;
-    }
-
-    public void setStatus(int status) {
-        this.status = status;
-        notifyStatus();
-    }
-
-    public void setStatusSubject(PublishSubject<Download> subject) {
-        this.statusSubject = subject;
-    }
-
-    private void notifyStatus() {
-        if (statusSubject != null)
-            statusSubject.onNext(this);
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/data/download/model/Download.kt

@@ -0,0 +1,40 @@
+package eu.kanade.tachiyomi.data.download.model
+
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.source.model.Page
+import eu.kanade.tachiyomi.data.source.online.OnlineSource
+import rx.subjects.PublishSubject
+import java.io.File
+
+class Download(val source: OnlineSource, val manga: Manga, val chapter: Chapter) {
+
+    lateinit var directory: File
+
+    var pages: List<Page>? = null
+
+    @Volatile @Transient var totalProgress: Int = 0
+
+    @Volatile @Transient var downloadedImages: Int = 0
+
+    @Volatile @Transient var status: Int = 0
+        set(status) {
+            field = status
+            statusSubject?.onNext(this)
+        }
+
+    @Transient private var statusSubject: PublishSubject<Download>? = null
+
+    fun setStatusSubject(subject: PublishSubject<Download>?) {
+        statusSubject = subject
+    }
+
+    companion object {
+
+        const val NOT_DOWNLOADED = 0
+        const val QUEUE = 1
+        const val DOWNLOADING = 2
+        const val DOWNLOADED = 3
+        const val ERROR = 4
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/download/model/DownloadQueue.java

@@ -1,78 +0,0 @@
-package eu.kanade.tachiyomi.data.download.model;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import eu.kanade.tachiyomi.data.database.models.Chapter;
-import eu.kanade.tachiyomi.data.source.model.Page;
-import rx.Observable;
-import rx.subjects.PublishSubject;
-
-public class DownloadQueue extends ArrayList<Download> {
-
-    private PublishSubject<Download> statusSubject;
-
-    public DownloadQueue() {
-        super();
-        statusSubject = PublishSubject.create();
-    }
-
-    public boolean add(Download download) {
-        download.setStatusSubject(statusSubject);
-        download.setStatus(Download.QUEUE);
-        return super.add(download);
-    }
-
-    public void remove(Download download) {
-        super.remove(download);
-        download.setStatusSubject(null);
-    }
-
-    public void remove(Chapter chapter) {
-        for (Download download : this) {
-            if (download.chapter.id.equals(chapter.id)) {
-                remove(download);
-                break;
-            }
-        }
-    }
-
-    public Observable<Download> getActiveDownloads() {
-        return Observable.from(this)
-                .filter(download -> download.getStatus() == Download.DOWNLOADING);
-    }
-
-    public Observable<Download> getStatusObservable() {
-        return statusSubject;
-    }
-
-    public Observable<Download> getProgressObservable() {
-        return statusSubject
-                .startWith(getActiveDownloads())
-                .flatMap(download -> {
-                    if (download.getStatus() == Download.DOWNLOADING) {
-                        PublishSubject<Integer> pageStatusSubject = PublishSubject.create();
-                        setPagesSubject(download.pages, pageStatusSubject);
-                        return pageStatusSubject
-                                .filter(status -> status == Page.READY)
-                                .map(status -> download);
-
-                    } else if (download.getStatus() == Download.DOWNLOADED ||
-                            download.getStatus() == Download.ERROR) {
-
-                        setPagesSubject(download.pages, null);
-                    }
-                    return Observable.just(download);
-                })
-                .filter(download -> download.getStatus() == Download.DOWNLOADING);
-    }
-
-    private void setPagesSubject(List<Page> pages, PublishSubject<Integer> subject) {
-        if (pages != null) {
-            for (Page page : pages) {
-                page.setStatusSubject(subject);
-            }
-        }
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/download/model/DownloadQueue.kt

@@ -0,0 +1,72 @@
+package eu.kanade.tachiyomi.data.download.model
+
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.source.model.Page
+import rx.Observable
+import rx.subjects.PublishSubject
+import java.util.concurrent.CopyOnWriteArrayList
+
+class DownloadQueue(private val queue: MutableList<Download> = CopyOnWriteArrayList<Download>())
+: List<Download> by queue {
+
+    private val statusSubject = PublishSubject.create<Download>()
+
+    private val removeSubject = PublishSubject.create<Download>()
+
+    fun add(download: Download): Boolean {
+        download.setStatusSubject(statusSubject)
+        download.status = Download.QUEUE
+        return queue.add(download)
+    }
+
+    fun del(download: Download) {
+        val removed = queue.remove(download)
+        download.setStatusSubject(null)
+        if (removed) {
+            removeSubject.onNext(download)
+        }
+    }
+
+    fun del(chapter: Chapter) {
+        find { it.chapter.id == chapter.id }?.let { del(it) }
+    }
+
+    fun clear() {
+        queue.forEach { del(it) }
+    }
+
+    fun getActiveDownloads(): Observable<Download> =
+        Observable.from(this).filter { download -> download.status == Download.DOWNLOADING }
+
+    fun getStatusObservable(): Observable<Download> = statusSubject.onBackpressureBuffer()
+
+    fun getRemovedObservable(): Observable<Download> = removeSubject.onBackpressureBuffer()
+
+    fun getProgressObservable(): Observable<Download> {
+        return statusSubject.onBackpressureBuffer()
+                .startWith(getActiveDownloads())
+                .flatMap { download ->
+                    if (download.status == Download.DOWNLOADING) {
+                        val pageStatusSubject = PublishSubject.create<Int>()
+                        setPagesSubject(download.pages, pageStatusSubject)
+                        return@flatMap pageStatusSubject
+                                .filter { it == Page.READY }
+                                .map { download }
+
+                    } else if (download.status == Download.DOWNLOADED || download.status == Download.ERROR) {
+                        setPagesSubject(download.pages, null)
+                    }
+                    Observable.just(download)
+                }
+                .filter { it.status == Download.DOWNLOADING }
+    }
+
+    private fun setPagesSubject(pages: List<Page>?, subject: PublishSubject<Int>?) {
+        if (pages != null) {
+            for (page in pages) {
+                page.setStatusSubject(subject)
+            }
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/glide/AppGlideModule.kt

@@ -0,0 +1,32 @@
+package eu.kanade.tachiyomi.data.glide
+
+import android.content.Context
+import com.bumptech.glide.Glide
+import com.bumptech.glide.GlideBuilder
+import com.bumptech.glide.integration.okhttp3.OkHttpUrlLoader
+import com.bumptech.glide.load.engine.cache.InternalCacheDiskCacheFactory
+import com.bumptech.glide.load.model.GlideUrl
+import com.bumptech.glide.module.GlideModule
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.network.NetworkHelper
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
+import java.io.InputStream
+
+/**
+ * Class used to update Glide module settings
+ */
+class AppGlideModule : GlideModule {
+
+    override fun applyOptions(context: Context, builder: GlideBuilder) {
+        // Set the cache size of Glide to 15 MiB
+        builder.setDiskCache(InternalCacheDiskCacheFactory(context, 15 * 1024 * 1024))
+    }
+
+    override fun registerComponents(context: Context, glide: Glide) {
+        val networkFactory = OkHttpUrlLoader.Factory(Injekt.get<NetworkHelper>().client)
+
+        glide.register(GlideUrl::class.java, InputStream::class.java, networkFactory)
+        glide.register(Manga::class.java, InputStream::class.java, MangaModelLoader.Factory())
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/glide/MangaDataFetcher.kt

@@ -0,0 +1,82 @@
+package eu.kanade.tachiyomi.data.glide
+
+import com.bumptech.glide.Priority
+import com.bumptech.glide.load.data.DataFetcher
+import eu.kanade.tachiyomi.data.database.models.Manga
+import java.io.File
+import java.io.FileNotFoundException
+import java.io.InputStream
+
+/**
+ * A [DataFetcher] for loading a cover of a manga depending on its favorite status.
+ * If the manga is favorite, it tries to load the cover from our cache, and if it's not found, it
+ * fallbacks to network and copies it to the cache.
+ * If the manga is not favorite, it tries to delete the cover from our cache and always fallback
+ * to network for fetching.
+ *
+ * @param networkFetcher the network fetcher for this cover.
+ * @param file the file where this cover should be. It may exists or not.
+ * @param manga the manga of the cover to load.
+ */
+class MangaDataFetcher(private val networkFetcher: DataFetcher<InputStream>,
+                       private val file: File,
+                       private val manga: Manga)
+: DataFetcher<InputStream> {
+
+    @Throws(Exception::class)
+    override fun loadData(priority: Priority): InputStream? {
+        if (manga.favorite) {
+            synchronized(file) {
+                if (!file.exists()) {
+                    val tmpFile = File(file.path + ".tmp")
+                    try {
+                        // Retrieve source stream.
+                        val input = networkFetcher.loadData(priority)
+                                ?: throw Exception("Couldn't open source stream")
+
+                        // Retrieve destination stream, create parent folders if needed.
+                        val output = try {
+                            tmpFile.outputStream()
+                        } catch (e: FileNotFoundException) {
+                            tmpFile.parentFile.mkdirs()
+                            tmpFile.outputStream()
+                        }
+
+                        // Copy the file and rename to the original.
+                        input.use { output.use { input.copyTo(output) } }
+                        tmpFile.renameTo(file)
+                    } catch (e: Exception) {
+                        tmpFile.delete()
+                        throw e
+                    }
+                }
+            }
+            return file.inputStream()
+        } else {
+            if (file.exists()) {
+                file.delete()
+            }
+            return networkFetcher.loadData(priority)
+        }
+    }
+
+    /**
+     * Returns the id for this manga's cover.
+     *
+     * Appending the file's modified date to the url, we can force Glide to skip its memory and disk
+     * lookup step and fetch from our custom cache. This allows us to invalidate Glide's cache when
+     * the file has changed. If the file doesn't exist it will append a 0.
+     */
+    override fun getId(): String {
+        return manga.thumbnail_url + file.lastModified()
+    }
+
+    override fun cancel() {
+        networkFetcher.cancel()
+    }
+
+    override fun cleanup() {
+        networkFetcher.cleanup()
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/glide/MangaModelLoader.kt

@@ -0,0 +1,117 @@
+package eu.kanade.tachiyomi.data.glide
+
+import android.content.Context
+import android.util.LruCache
+import com.bumptech.glide.Glide
+import com.bumptech.glide.load.data.DataFetcher
+import com.bumptech.glide.load.model.*
+import com.bumptech.glide.load.model.stream.StreamModelLoader
+import eu.kanade.tachiyomi.data.cache.CoverCache
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.source.SourceManager
+import eu.kanade.tachiyomi.data.source.online.OnlineSource
+import uy.kohesive.injekt.injectLazy
+import java.io.File
+import java.io.InputStream
+
+/**
+ * A class for loading a cover associated with a [Manga] that can be present in our own cache.
+ * Coupled with [MangaDataFetcher], this class allows to implement the following flow:
+ *
+ * - Check in RAM LRU.
+ * - Check in disk LRU.
+ * - Check in this module.
+ * - Fetch from the network connection.
+ *
+ * @param context the application context.
+ */
+class MangaModelLoader(context: Context) : StreamModelLoader<Manga> {
+
+    /**
+     * Cover cache where persistent covers are stored.
+     */
+    val coverCache: CoverCache by injectLazy()
+
+    /**
+     * Source manager.
+     */
+    val sourceManager: SourceManager by injectLazy()
+
+    /**
+     * Base network loader.
+     */
+    private val baseLoader = Glide.buildModelLoader(GlideUrl::class.java,
+            InputStream::class.java, context)
+
+    /**
+     * LRU cache whose key is the thumbnail url of the manga, and the value contains the request url
+     * and the file where it should be stored in case the manga is a favorite.
+     */
+    private val lruCache = LruCache<String, Pair<GlideUrl, File>>(100)
+
+    /**
+     * Map where request headers are stored for a source.
+     */
+    private val cachedHeaders = hashMapOf<Int, LazyHeaders>()
+
+    /**
+     * Factory class for creating [MangaModelLoader] instances.
+     */
+    class Factory : ModelLoaderFactory<Manga, InputStream> {
+
+        override fun build(context: Context, factories: GenericLoaderFactory)
+                = MangaModelLoader(context)
+
+        override fun teardown() {}
+    }
+
+    /**
+     * Returns a [MangaDataFetcher] for the given manga or null if the url is empty.
+     *
+     * @param manga the model.
+     * @param width the width of the view where the resource will be loaded.
+     * @param height the height of the view where the resource will be loaded.
+     */
+    override fun getResourceFetcher(manga: Manga,
+                                    width: Int,
+                                    height: Int): DataFetcher<InputStream>? {
+
+        // Check thumbnail is not null or empty
+        val url = manga.thumbnail_url
+        if (url.isNullOrEmpty()) {
+            return null
+        }
+
+        // Obtain the request url and the file for this url from the LRU cache, or calculate it
+        // and add them to the cache.
+        val (glideUrl, file) = lruCache.get(url) ?:
+            Pair(GlideUrl(url, getHeaders(manga)), coverCache.getCoverFile(url!!)).apply {
+                lruCache.put(url, this)
+            }
+
+        // Get the network fetcher for this request url.
+        val networkFetcher = baseLoader.getResourceFetcher(glideUrl, width, height)
+
+        // Return an instance of our fetcher providing the needed elements.
+        return MangaDataFetcher(networkFetcher, file, manga)
+    }
+
+    /**
+     * Returns the request headers for a source copying its OkHttp headers and caching them.
+     *
+     * @param manga the model.
+     */
+    fun getHeaders(manga: Manga): Headers {
+        val source = sourceManager.get(manga.source) as? OnlineSource ?: return LazyHeaders.DEFAULT
+        return cachedHeaders.getOrPut(manga.source) {
+            LazyHeaders.Builder().apply {
+                val nullStr: String? = null
+                setHeader("User-Agent", nullStr)
+                for ((key, value) in source.headers.toMultimap()) {
+                    addHeader(key, value[0])
+                }
+            }.build()
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateAlarm.kt

@@ -0,0 +1,83 @@
+package eu.kanade.tachiyomi.data.library
+
+import android.app.AlarmManager
+import android.app.PendingIntent
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.os.SystemClock
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.preference.getOrDefault
+import eu.kanade.tachiyomi.util.alarmManager
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
+
+/**
+ * This class is used to update the library by firing an alarm after a specified time.
+ * It has a receiver reacting to system's boot and the intent fired by this alarm.
+ * See [onReceive] for more information.
+ */
+class LibraryUpdateAlarm : BroadcastReceiver() {
+
+    companion object {
+        const val LIBRARY_UPDATE_ACTION = "eu.kanade.UPDATE_LIBRARY"
+
+        /**
+         * Sets the alarm to run the intent that updates the library.
+         * @param context the application context.
+         * @param intervalInHours the time in hours when it will be executed. Defaults to the
+         * value stored in preferences.
+         */
+        fun startAlarm(context: Context,
+                       intervalInHours: Int = Injekt.get<PreferencesHelper>().libraryUpdateInterval().getOrDefault()) {
+            // Stop previous running alarms if needed, and do not restart it if the interval is 0.
+            stopAlarm(context)
+            if (intervalInHours == 0)
+                return
+
+            // Get the time the alarm should fire the event to update.
+            val intervalInMillis = intervalInHours * 60 * 60 * 1000
+            val nextRun = SystemClock.elapsedRealtime() + intervalInMillis
+
+            // Start the alarm.
+            val pendingIntent = getPendingIntent(context)
+            context.alarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
+                    nextRun, intervalInMillis.toLong(), pendingIntent)
+        }
+
+        /**
+         * Stops the alarm if it's running.
+         * @param context the application context.
+         */
+        fun stopAlarm(context: Context) {
+            val pendingIntent = getPendingIntent(context)
+            context.alarmManager.cancel(pendingIntent)
+        }
+
+        /**
+         * Get the intent the alarm should run when it's fired.
+         * @param context the application context.
+         * @return the intent that will run when the alarm is fired.
+         */
+        private fun getPendingIntent(context: Context): PendingIntent {
+            val intent = Intent(context, LibraryUpdateAlarm::class.java)
+            intent.action = LIBRARY_UPDATE_ACTION
+            return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
+        }
+    }
+
+    /**
+     * Handle the intents received by this [BroadcastReceiver].
+     * @param context the application context.
+     * @param intent the intent to process.
+     */
+    override fun onReceive(context: Context, intent: Intent) {
+        when (intent.action) {
+            // Start the alarm when the system is booted.
+            Intent.ACTION_BOOT_COMPLETED -> startAlarm(context)
+            // Update the library when the alarm fires an event.
+            LIBRARY_UPDATE_ACTION -> LibraryUpdateService.start(context)
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt

@@ -0,0 +1,462 @@
+package eu.kanade.tachiyomi.data.library
+
+import android.app.PendingIntent
+import android.app.Service
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.os.IBinder
+import android.os.PowerManager
+import android.support.v4.app.NotificationCompat
+import com.github.pwittchen.reactivenetwork.library.ConnectivityStatus
+import com.github.pwittchen.reactivenetwork.library.ReactiveNetwork
+import eu.kanade.tachiyomi.Constants
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.database.DatabaseHelper
+import eu.kanade.tachiyomi.data.database.models.Category
+import eu.kanade.tachiyomi.data.database.models.Manga
+import eu.kanade.tachiyomi.data.library.LibraryUpdateService.Companion.start
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.source.SourceManager
+import eu.kanade.tachiyomi.data.source.online.OnlineSource
+import eu.kanade.tachiyomi.ui.main.MainActivity
+import eu.kanade.tachiyomi.util.*
+import rx.Observable
+import rx.Subscription
+import rx.schedulers.Schedulers
+import uy.kohesive.injekt.injectLazy
+import java.util.*
+import java.util.concurrent.atomic.AtomicInteger
+
+/**
+ * This class will take care of updating the chapters of the manga from the library. It can be
+ * started calling the [start] method. If it's already running, it won't do anything.
+ * While the library is updating, a [PowerManager.WakeLock] will be held until the update is
+ * completed, preventing the device from going to sleep mode. A notification will display the
+ * progress of the update, and if case of an unexpected error, this service will be silently
+ * destroyed.
+ */
+class LibraryUpdateService : Service() {
+
+    /**
+     * Database helper.
+     */
+    val db: DatabaseHelper by injectLazy()
+
+    /**
+     * Source manager.
+     */
+    val sourceManager: SourceManager by injectLazy()
+
+    /**
+     * Preferences.
+     */
+    val preferences: PreferencesHelper by injectLazy()
+
+    /**
+     * Wake lock that will be held until the service is destroyed.
+     */
+    private lateinit var wakeLock: PowerManager.WakeLock
+
+    /**
+     * Subscription where the update is done.
+     */
+    private var subscription: Subscription? = null
+
+    /**
+     * Id of the library update notification.
+     */
+    private val notificationId: Int
+        get() = Constants.NOTIFICATION_LIBRARY_ID
+
+
+    companion object {
+        /**
+         * Key for manual library update.
+         */
+        const val UPDATE_IS_MANUAL = "is_manual"
+
+        /**
+         * Key for category to update.
+         */
+        const val UPDATE_CATEGORY = "category"
+
+        /**
+         * Returns the status of the service.
+         *
+         * @param context the application context.
+         * @return true if the service is running, false otherwise.
+         */
+        fun isRunning(context: Context): Boolean {
+            return AndroidComponentUtil.isServiceRunning(context, LibraryUpdateService::class.java)
+        }
+
+        /**
+         * Starts the service. It will be started only if there isn't another instance already
+         * running.
+         *
+         * @param context the application context.
+         * @param isManual whether the update has been manually triggered.
+         * @param category a specific category to update, or null for all in the library.
+         */
+        fun start(context: Context, isManual: Boolean = false, category: Category? = null) {
+            if (!isRunning(context)) {
+                val intent = Intent(context, LibraryUpdateService::class.java).apply {
+                    putExtra(UPDATE_IS_MANUAL, isManual)
+                    category?.let { putExtra(UPDATE_CATEGORY, it.id) }
+                }
+                context.startService(intent)
+            }
+        }
+
+        /**
+         * Stops the service.
+         *
+         * @param context the application context.
+         */
+        fun stop(context: Context) {
+            context.stopService(Intent(context, LibraryUpdateService::class.java))
+        }
+
+    }
+
+    /**
+     * Method called when the service is created. It injects dagger dependencies and acquire
+     * the wake lock.
+     */
+    override fun onCreate() {
+        super.onCreate()
+        createAndAcquireWakeLock()
+    }
+
+    /**
+     * Method called when the service is destroyed. It destroys the running subscription, resets
+     * the alarm and release the wake lock.
+     */
+    override fun onDestroy() {
+        subscription?.unsubscribe()
+        LibraryUpdateAlarm.startAlarm(this)
+        destroyWakeLock()
+        super.onDestroy()
+    }
+
+    /**
+     * This method needs to be implemented, but it's not used/needed.
+     */
+    override fun onBind(intent: Intent): IBinder? {
+        return null
+    }
+
+    /**
+     * Method called when the service receives an intent.
+     *
+     * @param intent the start intent from.
+     * @param flags the flags of the command.
+     * @param startId the start id of this command.
+     * @return the start value of the command.
+     */
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+
+        // Get connectivity status
+        val connection = ReactiveNetwork().getConnectivityStatus(this, true)
+
+        // Get library update restrictions
+        val restrictions = preferences.libraryUpdateRestriction()
+
+        // Check if users updates library manual
+        val isManualUpdate = intent?.getBooleanExtra(UPDATE_IS_MANUAL, false) ?: false
+
+        // Whether to cancel the update.
+        var cancelUpdate = false
+
+        // Check if device has internet connection
+        // Check if device has wifi connection if only wifi is enabled
+        if (connection == ConnectivityStatus.OFFLINE || (!isManualUpdate && "wifi" in restrictions
+                && connection != ConnectivityStatus.WIFI_CONNECTED_HAS_INTERNET)) {
+
+            if (isManualUpdate) {
+                toast(R.string.notification_no_connection_title)
+            }
+
+            // Enable library update when connection available
+            AndroidComponentUtil.toggleComponent(this, SyncOnConnectionAvailable::class.java, true)
+            cancelUpdate = true
+        }
+        if (!isManualUpdate && "ac" in restrictions && !DeviceUtil.isPowerConnected(this)) {
+            AndroidComponentUtil.toggleComponent(this, SyncOnPowerConnected::class.java, true)
+            cancelUpdate = true
+        }
+
+        if (cancelUpdate) {
+            stopSelf(startId)
+            return Service.START_NOT_STICKY
+        }
+
+        // Stop enabled components.
+        AndroidComponentUtil.toggleComponent(this, SyncOnConnectionAvailable::class.java, false)
+        AndroidComponentUtil.toggleComponent(this, SyncOnPowerConnected::class.java, false)
+
+        // Unsubscribe from any previous subscription if needed.
+        subscription?.unsubscribe()
+
+        // Update favorite manga. Destroy service when completed or in case of an error.
+        subscription = Observable.defer { updateMangaList(getMangaToUpdate(intent)) }
+                .subscribeOn(Schedulers.io())
+                .subscribe({},
+                        {
+                            showNotification(getString(R.string.notification_update_error), "")
+                            stopSelf(startId)
+                        }, {
+                    stopSelf(startId)
+                })
+
+        return Service.START_STICKY
+    }
+
+    /**
+     * Returns the list of manga to be updated.
+     *
+     * @param intent the update intent.
+     * @return a list of manga to update
+     */
+    fun getMangaToUpdate(intent: Intent?): List<Manga> {
+        val categoryId = intent?.getIntExtra(UPDATE_CATEGORY, -1) ?: -1
+
+        var toUpdate = if (categoryId != -1)
+            db.getLibraryMangas().executeAsBlocking().filter { it.category == categoryId }
+        else
+            db.getFavoriteMangas().executeAsBlocking()
+
+        if (preferences.updateOnlyNonCompleted()) {
+            toUpdate = toUpdate.filter { it.status != Manga.COMPLETED }
+        }
+
+        return toUpdate
+    }
+
+    /**
+     * Method that updates the given list of manga. It's called in a background thread, so it's safe
+     * to do heavy operations or network calls here.
+     * For each manga it calls [updateManga] and updates the notification showing the current
+     * progress.
+     *
+     * @param mangaToUpdate the list to update
+     * @return an observable delivering the progress of each update.
+     */
+    fun updateMangaList(mangaToUpdate: List<Manga>): Observable<Manga> {
+        // Initialize the variables holding the progress of the updates.
+        val count = AtomicInteger(0)
+        val newUpdates = ArrayList<Manga>()
+        val failedUpdates = ArrayList<Manga>()
+
+        val cancelIntent = PendingIntent.getBroadcast(this, 0,
+                Intent(this, CancelUpdateReceiver::class.java), 0)
+
+        // Emit each manga and update it sequentially.
+        return Observable.from(mangaToUpdate)
+                // Notify manga that will update.
+                .doOnNext { showProgressNotification(it, count.andIncrement, mangaToUpdate.size, cancelIntent) }
+                // Update the chapters of the manga.
+                .concatMap { manga ->
+                    updateManga(manga)
+                            // If there's any error, return empty update and continue.
+                            .onErrorReturn {
+                                failedUpdates.add(manga)
+                                Pair(0, 0)
+                            }
+                            // Filter out mangas without new chapters (or failed).
+                            .filter { pair -> pair.first > 0 }
+                            // Convert to the manga that contains new chapters.
+                            .map { manga }
+                }
+                // Add manga with new chapters to the list.
+                .doOnNext { newUpdates.add(it) }
+                // Notify result of the overall update.
+                .doOnCompleted {
+                    if (newUpdates.isEmpty()) {
+                        cancelNotification()
+                    } else {
+                        showResultNotification(newUpdates, failedUpdates)
+                    }
+                }
+    }
+
+    /**
+     * Updates the chapters for the given manga and adds them to the database.
+     *
+     * @param manga the manga to update.
+     * @return a pair of the inserted and removed chapters.
+     */
+    fun updateManga(manga: Manga): Observable<Pair<Int, Int>> {
+        val source = sourceManager.get(manga.source) as? OnlineSource ?: return Observable.empty()
+        return source.fetchChapterList(manga)
+                .map { syncChaptersWithSource(db, it, manga, source) }
+    }
+
+    /**
+     * Returns the text that will be displayed in the notification when there are new chapters.
+     *
+     * @param updates a list of manga that contains new chapters.
+     * @param failedUpdates a list of manga that failed to update.
+     * @return the body of the notification to display.
+     */
+    private fun getUpdatedMangasBody(updates: List<Manga>, failedUpdates: List<Manga>): String {
+        return with(StringBuilder()) {
+            if (updates.isEmpty()) {
+                append(getString(R.string.notification_no_new_chapters))
+                append("\n")
+            } else {
+                append(getString(R.string.notification_new_chapters))
+                for (manga in updates) {
+                    append("\n")
+                    append(manga.title)
+                }
+            }
+            if (!failedUpdates.isEmpty()) {
+                append("\n\n")
+                append(getString(R.string.notification_manga_update_failed))
+                for (manga in failedUpdates) {
+                    append("\n")
+                    append(manga.title)
+                }
+            }
+            toString()
+        }
+    }
+
+    /**
+     * Creates and acquires a wake lock until the library is updated.
+     */
+    private fun createAndAcquireWakeLock() {
+        wakeLock = (getSystemService(Context.POWER_SERVICE) as PowerManager).newWakeLock(
+                PowerManager.PARTIAL_WAKE_LOCK, "LibraryUpdateService:WakeLock")
+        wakeLock.acquire()
+    }
+
+    /**
+     * Releases the wake lock if it's held.
+     */
+    private fun destroyWakeLock() {
+        if (wakeLock.isHeld) {
+            wakeLock.release()
+        }
+    }
+
+    /**
+     * Shows the notification with the given title and body.
+     *
+     * @param title the title of the notification.
+     * @param body the body of the notification.
+     */
+    private fun showNotification(title: String, body: String) {
+        notificationManager.notify(notificationId, notification() {
+            setSmallIcon(R.drawable.ic_refresh_white_24dp_img)
+            setContentTitle(title)
+            setContentText(body)
+        })
+    }
+
+    /**
+     * Shows the notification containing the currently updating manga and the progress.
+     *
+     * @param manga the manga that's being updated.
+     * @param current the current progress.
+     * @param total the total progress.
+     */
+    private fun showProgressNotification(manga: Manga, current: Int, total: Int, cancelIntent: PendingIntent) {
+        notificationManager.notify(notificationId, notification() {
+            setSmallIcon(R.drawable.ic_refresh_white_24dp_img)
+            setContentTitle(manga.title)
+            setProgress(total, current, false)
+            setOngoing(true)
+            addAction(R.drawable.ic_clear_grey_24dp_img, getString(android.R.string.cancel), cancelIntent)
+        })
+    }
+
+
+    /**
+     * Shows the notification containing the result of the update done by the service.
+     *
+     * @param updates a list of manga with new updates.
+     * @param failed a list of manga that failed to update.
+     */
+    private fun showResultNotification(updates: List<Manga>, failed: List<Manga>) {
+        val title = getString(R.string.notification_update_completed)
+        val body = getUpdatedMangasBody(updates, failed)
+
+        notificationManager.notify(notificationId, notification() {
+            setSmallIcon(R.drawable.ic_refresh_white_24dp_img)
+            setContentTitle(title)
+            setStyle(NotificationCompat.BigTextStyle().bigText(body))
+            setContentIntent(notificationIntent)
+            setAutoCancel(true)
+        })
+    }
+
+    /**
+     * Cancels the notification.
+     */
+    private fun cancelNotification() {
+        notificationManager.cancel(notificationId)
+    }
+
+    /**
+     * Property that returns an intent to open the main activity.
+     */
+    private val notificationIntent: PendingIntent
+        get() {
+            val intent = Intent(this, MainActivity::class.java)
+            intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_SINGLE_TOP
+            return PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
+        }
+
+    /**
+     * Class that triggers the library to update when a connection is available. It receives
+     * network changes.
+     */
+    class SyncOnConnectionAvailable : BroadcastReceiver() {
+        /**
+         * Method called when a network change occurs.
+         *
+         * @param context the application context.
+         * @param intent the intent received.
+         */
+        override fun onReceive(context: Context, intent: Intent) {
+            if (DeviceUtil.isNetworkConnected(context)) {
+                AndroidComponentUtil.toggleComponent(context, this.javaClass, false)
+                start(context)
+            }
+        }
+    }
+
+    /**
+     * Class that triggers the library to update when connected to power.
+     */
+    class SyncOnPowerConnected: BroadcastReceiver() {
+        /**
+         * Method called when AC is connected.
+         *
+         * @param context the application context.
+         * @param intent the intent received.
+         */
+        override fun onReceive(context: Context, intent: Intent) {
+            AndroidComponentUtil.toggleComponent(context, this.javaClass, false)
+            start(context)
+        }
+    }
+
+    /**
+     * Class that stops updating the library.
+     */
+    class CancelUpdateReceiver : BroadcastReceiver() {
+        /**
+         * Method called when user wants a library update.
+         * @param context the application context.
+         * @param intent the intent received.
+         */
+        override fun onReceive(context: Context, intent: Intent) {
+            LibraryUpdateService.stop(context)
+            context.notificationManager.cancel(Constants.NOTIFICATION_LIBRARY_ID)
+        }
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/data/mangasync/MangaSyncManager.java

@@ -1,40 +0,0 @@
-package eu.kanade.tachiyomi.data.mangasync;
-
-import android.content.Context;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import eu.kanade.tachiyomi.data.mangasync.base.MangaSyncService;
-import eu.kanade.tachiyomi.data.mangasync.services.MyAnimeList;
-
-public class MangaSyncManager {
-
-    private List<MangaSyncService> services;
-    private MyAnimeList myAnimeList;
-
-    public static final int MYANIMELIST = 1;
-
-    public MangaSyncManager(Context context) {
-        services = new ArrayList<>();
-        myAnimeList = new MyAnimeList(context);
-        services.add(myAnimeList);
-    }
-
-    public MyAnimeList getMyAnimeList() {
-        return myAnimeList;
-    }
-
-    public List<MangaSyncService> getSyncServices() {
-        return services;
-    }
-
-    public MangaSyncService getSyncService(int id) {
-        switch (id) {
-            case MYANIMELIST:
-                return myAnimeList;
-        }
-        return null;
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/mangasync/MangaSyncManager.kt

@@ -0,0 +1,18 @@
+package eu.kanade.tachiyomi.data.mangasync
+
+import android.content.Context
+import eu.kanade.tachiyomi.data.mangasync.myanimelist.MyAnimeList
+
+class MangaSyncManager(private val context: Context) {
+
+    companion object {
+        const val MYANIMELIST = 1
+    }
+
+    val myAnimeList = MyAnimeList(context, MYANIMELIST)
+
+    val services = listOf(myAnimeList)
+
+    fun getService(id: Int) = services.find { it.id == id }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/mangasync/MangaSyncService.kt

@@ -0,0 +1,51 @@
+package eu.kanade.tachiyomi.data.mangasync
+
+import android.content.Context
+import android.support.annotation.CallSuper
+import eu.kanade.tachiyomi.data.database.models.MangaSync
+import eu.kanade.tachiyomi.data.network.NetworkHelper
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import okhttp3.OkHttpClient
+import rx.Completable
+import rx.Observable
+import uy.kohesive.injekt.injectLazy
+
+abstract class MangaSyncService(private val context: Context, val id: Int) {
+
+    val preferences: PreferencesHelper by injectLazy()
+    val networkService: NetworkHelper by injectLazy()
+
+    open val client: OkHttpClient
+        get() = networkService.client
+
+    // Name of the manga sync service to display
+    abstract val name: String
+
+    abstract fun login(username: String, password: String): Completable
+
+    open val isLogged: Boolean
+        get() = !getUsername().isEmpty() &&
+                !getPassword().isEmpty()
+
+    abstract fun add(manga: MangaSync): Observable<MangaSync>
+
+    abstract fun update(manga: MangaSync): Observable<MangaSync>
+
+    abstract fun bind(manga: MangaSync): Observable<MangaSync>
+
+    abstract fun getStatus(status: Int): String
+
+    fun saveCredentials(username: String, password: String) {
+        preferences.setMangaSyncCredentials(this, username, password)
+    }
+
+    @CallSuper
+    open fun logout() {
+        preferences.setMangaSyncCredentials(this, "", "")
+    }
+
+    fun getUsername() = preferences.mangaSyncUsername(this)
+
+    fun getPassword() = preferences.mangaSyncPassword(this)
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/mangasync/UpdateMangaSyncService.kt

@@ -0,0 +1,74 @@
+package eu.kanade.tachiyomi.data.mangasync
+
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.IBinder
+import eu.kanade.tachiyomi.data.database.DatabaseHelper
+import eu.kanade.tachiyomi.data.database.models.MangaSync
+import rx.Observable
+import rx.android.schedulers.AndroidSchedulers
+import rx.schedulers.Schedulers
+import rx.subscriptions.CompositeSubscription
+import uy.kohesive.injekt.injectLazy
+
+class UpdateMangaSyncService : Service() {
+
+    val syncManager: MangaSyncManager by injectLazy()
+    val db: DatabaseHelper by injectLazy()
+
+    private lateinit var subscriptions: CompositeSubscription
+
+    override fun onCreate() {
+        super.onCreate()
+        subscriptions = CompositeSubscription()
+    }
+
+    override fun onDestroy() {
+        subscriptions.unsubscribe()
+        super.onDestroy()
+    }
+
+    override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
+        val manga = intent.getSerializableExtra(EXTRA_MANGASYNC)
+        if (manga != null) {
+            updateLastChapterRead(manga as MangaSync, startId)
+            return Service.START_REDELIVER_INTENT
+        } else {
+            stopSelf(startId)
+            return Service.START_NOT_STICKY
+        }
+    }
+
+    override fun onBind(intent: Intent): IBinder? {
+        return null
+    }
+
+    private fun updateLastChapterRead(mangaSync: MangaSync, startId: Int) {
+        val sync = syncManager.getService(mangaSync.sync_id)
+        if (sync == null) {
+            stopSelf(startId)
+            return
+        }
+
+        subscriptions.add(Observable.defer { sync.update(mangaSync) }
+                .flatMap { db.insertMangaSync(mangaSync).asRxObservable() }
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({ stopSelf(startId) },
+                        { stopSelf(startId) }))
+    }
+
+    companion object {
+
+        private val EXTRA_MANGASYNC = "extra_mangasync"
+
+        @JvmStatic
+        fun start(context: Context, mangaSync: MangaSync) {
+            val intent = Intent(context, UpdateMangaSyncService::class.java)
+            intent.putExtra(EXTRA_MANGASYNC, mangaSync)
+            context.startService(intent)
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/mangasync/base/MangaSyncService.java

@@ -1,28 +0,0 @@
-package eu.kanade.tachiyomi.data.mangasync.base;
-
-import com.squareup.okhttp.Response;
-
-import eu.kanade.tachiyomi.data.database.models.MangaSync;
-import rx.Observable;
-
-public abstract class MangaSyncService {
-
-    // Name of the manga sync service to display
-    public abstract String getName();
-
-    // Id of the sync service (must be declared and obtained from MangaSyncManager to avoid conflicts)
-    public abstract int getId();
-
-    public abstract Observable<Boolean> login(String username, String password);
-
-    public abstract boolean isLogged();
-
-    public abstract Observable<Response> update(MangaSync manga);
-
-    public abstract Observable<Response> add(MangaSync manga);
-
-    public abstract Observable<Response> bind(MangaSync manga);
-
-    public abstract String getStatus(int status);
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/mangasync/myanimelist/MyAnimeList.kt

@@ -0,0 +1,222 @@
+package eu.kanade.tachiyomi.data.mangasync.myanimelist
+
+import android.content.Context
+import android.net.Uri
+import android.util.Xml
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.database.models.MangaSync
+import eu.kanade.tachiyomi.data.mangasync.MangaSyncService
+import eu.kanade.tachiyomi.data.network.GET
+import eu.kanade.tachiyomi.data.network.POST
+import eu.kanade.tachiyomi.data.network.asObservable
+import eu.kanade.tachiyomi.util.selectInt
+import eu.kanade.tachiyomi.util.selectText
+import okhttp3.Credentials
+import okhttp3.FormBody
+import okhttp3.Headers
+import okhttp3.RequestBody
+import org.jsoup.Jsoup
+import org.xmlpull.v1.XmlSerializer
+import rx.Completable
+import rx.Observable
+import java.io.StringWriter
+
+class MyAnimeList(private val context: Context, id: Int) : MangaSyncService(context, id) {
+
+    private lateinit var headers: Headers
+
+    companion object {
+        val BASE_URL = "http://myanimelist.net"
+
+        private val ENTRY_TAG = "entry"
+        private val CHAPTER_TAG = "chapter"
+        private val SCORE_TAG = "score"
+        private val STATUS_TAG = "status"
+
+        val READING = 1
+        val COMPLETED = 2
+        val ON_HOLD = 3
+        val DROPPED = 4
+        val PLAN_TO_READ = 6
+
+        val DEFAULT_STATUS = READING
+        val DEFAULT_SCORE = 0
+    }
+
+    init {
+        val username = getUsername()
+        val password = getPassword()
+
+        if (!username.isEmpty() && !password.isEmpty()) {
+            createHeaders(username, password)
+        }
+    }
+
+    override val name: String
+        get() = "MyAnimeList"
+
+    fun getLoginUrl() = Uri.parse(BASE_URL).buildUpon()
+            .appendEncodedPath("api/account/verify_credentials.xml")
+            .toString()
+
+    fun getSearchUrl(query: String) = Uri.parse(BASE_URL).buildUpon()
+            .appendEncodedPath("api/manga/search.xml")
+            .appendQueryParameter("q", query)
+            .toString()
+
+    fun getListUrl(username: String) = Uri.parse(BASE_URL).buildUpon()
+            .appendPath("malappinfo.php")
+            .appendQueryParameter("u", username)
+            .appendQueryParameter("status", "all")
+            .appendQueryParameter("type", "manga")
+            .toString()
+
+    fun getUpdateUrl(manga: MangaSync) = Uri.parse(BASE_URL).buildUpon()
+            .appendEncodedPath("api/mangalist/update")
+            .appendPath("${manga.remote_id}.xml")
+            .toString()
+
+    fun getAddUrl(manga: MangaSync) = Uri.parse(BASE_URL).buildUpon()
+            .appendEncodedPath("api/mangalist/add")
+            .appendPath("${manga.remote_id}.xml")
+            .toString()
+
+    override fun login(username: String, password: String): Completable {
+        createHeaders(username, password)
+        return client.newCall(GET(getLoginUrl(), headers))
+                .asObservable()
+                .doOnNext { it.close() }
+                .doOnNext { if (it.code() != 200) throw Exception("Login error") }
+                .toCompletable()
+    }
+
+    fun search(query: String): Observable<List<MangaSync>> {
+        return client.newCall(GET(getSearchUrl(query), headers))
+                .asObservable()
+                .map { Jsoup.parse(it.body().string()) }
+                .flatMap { Observable.from(it.select("entry")) }
+                .filter { it.select("type").text() != "Novel" }
+                .map {
+                    MangaSync.create(id).apply {
+                        title = it.selectText("title")!!
+                        remote_id = it.selectInt("id")
+                        total_chapters = it.selectInt("chapters")
+                    }
+                }
+                .toList()
+    }
+
+    // MAL doesn't support score with decimals
+    fun getList(): Observable<List<MangaSync>> {
+        return networkService.forceCacheClient
+                .newCall(GET(getListUrl(getUsername()), headers))
+                .asObservable()
+                .map { Jsoup.parse(it.body().string()) }
+                .flatMap { Observable.from(it.select("manga")) }
+                .map {
+                    MangaSync.create(id).apply {
+                        title = it.selectText("series_title")!!
+                        remote_id = it.selectInt("series_mangadb_id")
+                        last_chapter_read = it.selectInt("my_read_chapters")
+                        status = it.selectInt("my_status")
+                        score = it.selectInt("my_score").toFloat()
+                        total_chapters = it.selectInt("series_chapters")
+                    }
+                }
+                .toList()
+    }
+
+    override fun update(manga: MangaSync): Observable<MangaSync> {
+        return Observable.defer {
+            if (manga.total_chapters != 0 && manga.last_chapter_read == manga.total_chapters) {
+                manga.status = COMPLETED
+            }
+            client.newCall(POST(getUpdateUrl(manga), headers, getMangaPostPayload(manga)))
+                    .asObservable()
+                    .doOnNext { it.close() }
+                    .doOnNext { if (!it.isSuccessful) throw Exception("Could not update manga") }
+                    .map { manga }
+        }
+
+    }
+
+    override fun add(manga: MangaSync): Observable<MangaSync> {
+        return Observable.defer {
+            client.newCall(POST(getAddUrl(manga), headers, getMangaPostPayload(manga)))
+                    .asObservable()
+                    .doOnNext { it.close() }
+                    .doOnNext { if (!it.isSuccessful) throw Exception("Could not add manga") }
+                    .map { manga }
+        }
+    }
+
+    private fun getMangaPostPayload(manga: MangaSync): RequestBody {
+        val xml = Xml.newSerializer()
+        val writer = StringWriter()
+
+        with(xml) {
+            setOutput(writer)
+            startDocument("UTF-8", false)
+            startTag("", ENTRY_TAG)
+
+            // Last chapter read
+            if (manga.last_chapter_read != 0) {
+                inTag(CHAPTER_TAG, manga.last_chapter_read.toString())
+            }
+            // Manga status in the list
+            inTag(STATUS_TAG, manga.status.toString())
+
+            // Manga score
+            inTag(SCORE_TAG, manga.score.toString())
+
+            endTag("", ENTRY_TAG)
+            endDocument()
+        }
+
+        val form = FormBody.Builder()
+        form.add("data", writer.toString())
+        return form.build()
+    }
+
+    fun XmlSerializer.inTag(tag: String, body: String, namespace: String = "") {
+        startTag(namespace, tag)
+        text(body)
+        endTag(namespace, tag)
+    }
+
+    override fun bind(manga: MangaSync): Observable<MangaSync> {
+        return getList()
+                .flatMap { userlist ->
+                    manga.sync_id = id
+                    val mangaFromList = userlist.find { it.remote_id == manga.remote_id }
+                    if (mangaFromList != null) {
+                        manga.copyPersonalFrom(mangaFromList)
+                        update(manga)
+                    } else {
+                        // Set default fields if it's not found in the list
+                        manga.score = DEFAULT_SCORE.toFloat()
+                        manga.status = DEFAULT_STATUS
+                        add(manga)
+                    }
+                }
+    }
+
+    override fun getStatus(status: Int): String = with(context) {
+        when (status) {
+            READING -> getString(R.string.reading)
+            COMPLETED -> getString(R.string.completed)
+            ON_HOLD -> getString(R.string.on_hold)
+            DROPPED -> getString(R.string.dropped)
+            PLAN_TO_READ -> getString(R.string.plan_to_read)
+            else -> ""
+        }
+    }
+
+    fun createHeaders(username: String, password: String) {
+        val builder = Headers.Builder()
+        builder.add("Authorization", Credentials.basic(username, password))
+        builder.add("User-Agent", "api-indiv-9F93C52A963974CF674325391990191C")
+        headers = builder.build()
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/mangasync/services/MyAnimeList.java

@@ -1,264 +0,0 @@
-package eu.kanade.tachiyomi.data.mangasync.services;
-
-import android.content.Context;
-import android.net.Uri;
-import android.util.Xml;
-
-import com.squareup.okhttp.Credentials;
-import com.squareup.okhttp.FormEncodingBuilder;
-import com.squareup.okhttp.Headers;
-import com.squareup.okhttp.RequestBody;
-import com.squareup.okhttp.Response;
-
-import org.jsoup.Jsoup;
-import org.xmlpull.v1.XmlSerializer;
-
-import java.io.IOException;
-import java.io.StringWriter;
-import java.util.List;
-
-import javax.inject.Inject;
-
-import eu.kanade.tachiyomi.App;
-import eu.kanade.tachiyomi.R;
-import eu.kanade.tachiyomi.data.database.models.MangaSync;
-import eu.kanade.tachiyomi.data.mangasync.MangaSyncManager;
-import eu.kanade.tachiyomi.data.mangasync.base.MangaSyncService;
-import eu.kanade.tachiyomi.data.network.NetworkHelper;
-import eu.kanade.tachiyomi.data.preference.PreferencesHelper;
-import rx.Observable;
-
-public class MyAnimeList extends MangaSyncService {
-
-    @Inject PreferencesHelper preferences;
-    @Inject NetworkHelper networkService;
-
-    private Headers headers;
-    private String username;
-
-    public static final String BASE_URL = "http://myanimelist.net";
-
-    private static final String ENTRY_TAG = "entry";
-    private static final String CHAPTER_TAG = "chapter";
-    private static final String SCORE_TAG = "score";
-    private static final String STATUS_TAG = "status";
-
-    public static final int READING = 1;
-    public static final int COMPLETED = 2;
-    public static final int ON_HOLD = 3;
-    public static final int DROPPED = 4;
-    public static final int PLAN_TO_READ = 6;
-
-    public static final int DEFAULT_STATUS = READING;
-    public static final int DEFAULT_SCORE = 0;
-
-    private Context context;
-
-    public MyAnimeList(Context context) {
-        this.context = context;
-        App.get(context).getComponent().inject(this);
-
-        String username = preferences.getMangaSyncUsername(this);
-        String password = preferences.getMangaSyncPassword(this);
-
-        if (!username.isEmpty() && !password.isEmpty()) {
-            createHeaders(username, password);
-        }
-    }
-
-    @Override
-    public String getName() {
-        return "MyAnimeList";
-    }
-
-    @Override
-    public int getId() {
-        return MangaSyncManager.MYANIMELIST;
-    }
-
-    public String getLoginUrl() {
-        return Uri.parse(BASE_URL).buildUpon()
-                .appendEncodedPath("api/account/verify_credentials.xml")
-                .toString();
-    }
-
-    public Observable<Boolean> login(String username, String password) {
-        createHeaders(username, password);
-        return networkService.getResponse(getLoginUrl(), headers, null)
-                .map(response -> response.code() == 200);
-    }
-
-    @Override
-    public boolean isLogged() {
-        return !preferences.getMangaSyncUsername(this).isEmpty()
-                && !preferences.getMangaSyncPassword(this).isEmpty();
-    }
-
-    public String getSearchUrl(String query) {
-        return Uri.parse(BASE_URL).buildUpon()
-                .appendEncodedPath("api/manga/search.xml")
-                .appendQueryParameter("q", query)
-                .toString();
-    }
-
-    public Observable<List<MangaSync>> search(String query) {
-        return networkService.getStringResponse(getSearchUrl(query), headers, null)
-                .map(Jsoup::parse)
-                .flatMap(doc -> Observable.from(doc.select("entry")))
-                .filter(entry -> !entry.select("type").text().equals("Novel"))
-                .map(entry -> {
-                    MangaSync manga = MangaSync.create(this);
-                    manga.title = entry.select("title").first().text();
-                    manga.remote_id = Integer.parseInt(entry.select("id").first().text());
-                    manga.total_chapters = Integer.parseInt(entry.select("chapters").first().text());
-                    return manga;
-                })
-                .toList();
-    }
-
-    public String getListUrl(String username) {
-        return Uri.parse(BASE_URL).buildUpon()
-                .appendPath("malappinfo.php")
-                .appendQueryParameter("u", username)
-                .appendQueryParameter("status", "all")
-                .appendQueryParameter("type", "manga")
-                .toString();
-    }
-
-    public Observable<List<MangaSync>> getList() {
-        // TODO cache this list for a few minutes
-        return networkService.getStringResponse(getListUrl(username), headers, null)
-                .map(Jsoup::parse)
-                .flatMap(doc -> Observable.from(doc.select("manga")))
-                .map(entry -> {
-                    MangaSync manga = MangaSync.create(this);
-                    manga.title = entry.select("series_title").first().text();
-                    manga.remote_id = Integer.parseInt(
-                            entry.select("series_mangadb_id").first().text());
-                    manga.last_chapter_read = Integer.parseInt(
-                            entry.select("my_read_chapters").first().text());
-                    manga.status = Integer.parseInt(
-                            entry.select("my_status").first().text());
-                    // MAL doesn't support score with decimals
-                    manga.score = Integer.parseInt(
-                            entry.select("my_score").first().text());
-                    manga.total_chapters = Integer.parseInt(
-                            entry.select("series_chapters").first().text());
-                    return manga;
-                })
-                .toList();
-    }
-
-    public String getUpdateUrl(MangaSync manga) {
-        return Uri.parse(BASE_URL).buildUpon()
-                .appendEncodedPath("api/mangalist/update")
-                .appendPath(manga.remote_id + ".xml")
-                .toString();
-    }
-
-    public Observable<Response> update(MangaSync manga) {
-        try {
-            if (manga.total_chapters != 0 && manga.last_chapter_read == manga.total_chapters) {
-                manga.status = COMPLETED;
-            }
-            RequestBody payload = getMangaPostPayload(manga);
-            return networkService.postData(getUpdateUrl(manga), payload, headers);
-        } catch (IOException e) {
-            return Observable.error(e);
-        }
-    }
-
-    public String getAddUrl(MangaSync manga) {
-        return Uri.parse(BASE_URL).buildUpon()
-                .appendEncodedPath("api/mangalist/add")
-                .appendPath(manga.remote_id + ".xml")
-                .toString();
-    }
-
-    public Observable<Response> add(MangaSync manga) {
-        try {
-            RequestBody payload = getMangaPostPayload(manga);
-            return networkService.postData(getAddUrl(manga), payload, headers);
-        } catch (IOException e) {
-            return Observable.error(e);
-        }
-    }
-
-    private RequestBody getMangaPostPayload(MangaSync manga) throws IOException {
-        XmlSerializer xml = Xml.newSerializer();
-        StringWriter writer = new StringWriter();
-        xml.setOutput(writer);
-        xml.startDocument("UTF-8", false);
-        xml.startTag("", ENTRY_TAG);
-
-        // Last chapter read
-        if (manga.last_chapter_read != 0) {
-            xml.startTag("", CHAPTER_TAG);
-            xml.text(manga.last_chapter_read + "");
-            xml.endTag("", CHAPTER_TAG);
-        }
-        // Manga status in the list
-        xml.startTag("", STATUS_TAG);
-        xml.text(manga.status + "");
-        xml.endTag("", STATUS_TAG);
-        // Manga score
-        xml.startTag("", SCORE_TAG);
-        xml.text(manga.score + "");
-        xml.endTag("", SCORE_TAG);
-
-        xml.endTag("", ENTRY_TAG);
-        xml.endDocument();
-
-        FormEncodingBuilder form = new FormEncodingBuilder();
-        form.add("data", writer.toString());
-        return form.build();
-    }
-
-    public Observable<Response> bind(MangaSync manga) {
-        return getList()
-                .flatMap(list -> {
-                    manga.sync_id = getId();
-                    for (MangaSync remoteManga : list) {
-                        if (remoteManga.remote_id == manga.remote_id) {
-                            // Manga is already in the list
-                            manga.copyPersonalFrom(remoteManga);
-                            return update(manga);
-                        }
-                    }
-                    // Set default fields if it's not found in the list
-                    manga.score = DEFAULT_SCORE;
-                    manga.status = DEFAULT_STATUS;
-                    return add(manga);
-                });
-    }
-
-    @Override
-    public String getStatus(int status) {
-        switch (status) {
-            case READING:
-                return context.getString(R.string.reading);
-            case COMPLETED:
-                return context.getString(R.string.completed);
-            case ON_HOLD:
-                return context.getString(R.string.on_hold);
-            case DROPPED:
-                return context.getString(R.string.dropped);
-            case PLAN_TO_READ:
-                return context.getString(R.string.plan_to_read);
-        }
-        return "";
-    }
-
-    public void createHeaders(String username, String password) {
-        this.username = username;
-        Headers.Builder builder = new Headers.Builder();
-        builder.add("Authorization", Credentials.basic(username, password));
-        builder.add("User-Agent", "api-indiv-9F93C52A963974CF674325391990191C");
-        setHeaders(builder.build());
-    }
-
-    public void setHeaders(Headers headers) {
-        this.headers = headers;
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/network/CloudflareInterceptor.kt

@@ -0,0 +1,81 @@
+package eu.kanade.tachiyomi.data.network
+
+import com.squareup.duktape.Duktape
+import okhttp3.HttpUrl
+import okhttp3.Interceptor
+import okhttp3.Request
+import okhttp3.Response
+
+class CloudflareInterceptor(private val cookies: PersistentCookieStore) : Interceptor {
+
+    //language=RegExp
+    private val operationPattern = Regex("""setTimeout\(function\(\)\{\s+(var (?:\w,)+f.+?\r?\n[\s\S]+?a\.value =.+?)\r?\n""")
+    
+    //language=RegExp
+    private val passPattern = Regex("""name="pass" value="(.+?)"""")
+
+    //language=RegExp
+    private val challengePattern = Regex("""name="jschl_vc" value="(\w+)"""")
+
+    override fun intercept(chain: Interceptor.Chain): Response {
+        val response = chain.proceed(chain.request())
+
+        // Check if we already solved a challenge
+        if (response.code() != 503 &&
+                cookies.get(response.request().url()).any { it.name() == "cf_clearance" }) {
+            return response
+        }
+
+        // Check if Cloudflare anti-bot is on
+        if ("URL=/cdn-cgi/" in response.header("Refresh", "")
+                && response.header("Server", "") == "cloudflare-nginx") {
+            return chain.proceed(resolveChallenge(response))
+        }
+
+        return response
+    }
+
+    private fun resolveChallenge(response: Response): Request {
+        val duktape = Duktape.create()
+        try {
+            val originalRequest = response.request()
+            val domain = originalRequest.url().host()
+            val content = response.body().string()
+
+            // CloudFlare requires waiting 4 seconds before resolving the challenge
+            Thread.sleep(4000)
+
+            val operation = operationPattern.find(content)?.groups?.get(1)?.value
+            val challenge = challengePattern.find(content)?.groups?.get(1)?.value
+            val pass = passPattern.find(content)?.groups?.get(1)?.value
+
+            if (operation == null || challenge == null || pass == null) {
+                throw RuntimeException("Failed resolving Cloudflare challenge")
+            }
+
+            val js = operation
+                    //language=RegExp
+                    .replace(Regex("""a\.value =(.+?) \+.*"""), "$1")
+                    //language=RegExp
+                    .replace(Regex("""\s{3,}[a-z](?: = |\.).+"""), "")
+                    .replace("\n", "")
+
+            // Duktape can only return strings, so the result has to be converted to string first
+            val result = duktape.evaluate("$js.toString()").toInt()
+
+            val answer = "${result + domain.length}"
+
+            val url = HttpUrl.parse("http://$domain/cdn-cgi/l/chk_jschl").newBuilder()
+                    .addQueryParameter("jschl_vc", challenge)
+                    .addQueryParameter("pass", pass)
+                    .addQueryParameter("jschl_answer", answer)
+                    .toString()
+
+            val referer = originalRequest.url().toString()
+            return GET(url, originalRequest.headers().newBuilder().add("Referer", referer).build())
+        } finally {
+            duktape.close()
+        }
+    }
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/network/NetworkHelper.java

@@ -1,108 +0,0 @@
-package eu.kanade.tachiyomi.data.network;
-
-
-import com.squareup.okhttp.CacheControl;
-import com.squareup.okhttp.FormEncodingBuilder;
-import com.squareup.okhttp.Headers;
-import com.squareup.okhttp.OkHttpClient;
-import com.squareup.okhttp.Request;
-import com.squareup.okhttp.RequestBody;
-import com.squareup.okhttp.Response;
-
-import java.net.CookieManager;
-import java.net.CookiePolicy;
-import java.net.CookieStore;
-
-import rx.Observable;
-
-public final class NetworkHelper {
-
-    private OkHttpClient client;
-    private CookieManager cookieManager;
-
-    public final CacheControl NULL_CACHE_CONTROL = new CacheControl.Builder().noCache().build();
-    public final Headers NULL_HEADERS = new Headers.Builder().build();
-    public final RequestBody NULL_REQUEST_BODY = new FormEncodingBuilder().build();
-
-    public NetworkHelper() {
-        client = new OkHttpClient();
-        cookieManager = new CookieManager();
-        cookieManager.setCookiePolicy(CookiePolicy.ACCEPT_ALL);
-        client.setCookieHandler(cookieManager);
-    }
-
-    public Observable<Response> getResponse(final String url, final Headers headers, final CacheControl cacheControl) {
-        return Observable.defer(() -> {
-            try {
-                Request request = new Request.Builder()
-                        .url(url)
-                        .cacheControl(cacheControl != null ? cacheControl : NULL_CACHE_CONTROL)
-                        .headers(headers != null ? headers : NULL_HEADERS)
-                        .build();
-
-                return Observable.just(client.newCall(request).execute());
-            } catch (Throwable e) {
-                return Observable.error(e);
-            }
-        }).retry(1);
-    }
-
-    public Observable<String> mapResponseToString(final Response response) {
-        return Observable.defer(() -> {
-            try {
-                return Observable.just(response.body().string());
-            } catch (Throwable e) {
-                return Observable.error(e);
-            }
-        });
-    }
-
-    public Observable<String> getStringResponse(final String url, final Headers headers, final CacheControl cacheControl) {
-        return getResponse(url, headers, cacheControl)
-                .flatMap(this::mapResponseToString);
-    }
-
-    public Observable<Response> postData(final String url, final RequestBody formBody, final Headers headers) {
-        return Observable.defer(() -> {
-            try {
-                Request request = new Request.Builder()
-                        .url(url)
-                        .post(formBody != null ? formBody : NULL_REQUEST_BODY)
-                        .headers(headers != null ? headers : NULL_HEADERS)
-                        .build();
-                return Observable.just(client.newCall(request).execute());
-            } catch (Throwable e) {
-                return Observable.error(e);
-            }
-        }).retry(1);
-    }
-
-    public Observable<Response> getProgressResponse(final String url, final Headers headers, final ProgressListener listener) {
-        return Observable.defer(() -> {
-            try {
-                Request request = new Request.Builder()
-                        .url(url)
-                        .cacheControl(NULL_CACHE_CONTROL)
-                        .headers(headers != null ? headers : NULL_HEADERS)
-                        .build();
-
-                OkHttpClient progressClient = client.clone();
-
-                progressClient.networkInterceptors().add(chain -> {
-                    Response originalResponse = chain.proceed(chain.request());
-                    return originalResponse.newBuilder()
-                            .body(new ProgressResponseBody(originalResponse.body(), listener))
-                            .build();
-                });
-                return Observable.just(progressClient.newCall(request).execute());
-            } catch (Throwable e) {
-                return Observable.error(e);
-            }
-        }).retry(2);
-    }
-
-    public CookieStore getCookies() {
-        return cookieManager.getCookieStore();
-    }
-
-}

app/src/main/java/eu/kanade/tachiyomi/data/network/NetworkHelper.kt

@@ -0,0 +1,38 @@
+package eu.kanade.tachiyomi.data.network
+
+import android.content.Context
+import okhttp3.Cache
+import okhttp3.OkHttpClient
+import java.io.File
+
+class NetworkHelper(context: Context) {
+
+    private val cacheDir = File(context.cacheDir, "network_cache")
+
+    private val cacheSize = 5L * 1024 * 1024 // 5 MiB
+
+    private val cookieManager = PersistentCookieJar(context)
+
+    val client = OkHttpClient.Builder()
+            .cookieJar(cookieManager)
+            .cache(Cache(cacheDir, cacheSize))
+            .build()
+
+    val forceCacheClient = client.newBuilder()
+            .addNetworkInterceptor { chain ->
+                val originalResponse = chain.proceed(chain.request())
+                originalResponse.newBuilder()
+                        .removeHeader("Pragma")
+                        .header("Cache-Control", "max-age=600")
+                        .build()
+            }
+            .build()
+
+    val cloudflareClient = client.newBuilder()
+            .addInterceptor(CloudflareInterceptor(cookies))
+            .build()
+
+    val cookies: PersistentCookieStore
+        get() = cookieManager.store
+
+}

app/src/main/java/eu/kanade/tachiyomi/data/network/OkHttpExtensions.kt

@@ -0,0 +1,66 @@
+package eu.kanade.tachiyomi.data.network
+
+import okhttp3.Call
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.Response
+import rx.Observable
+import rx.Producer
+import rx.Subscription
+import java.util.concurrent.atomic.AtomicBoolean
+
+fun Call.asObservable(): Observable<Response> {
+    return Observable.create { subscriber ->
+        // Since Call is a one-shot type, clone it for each new subscriber.
+        val call = if (!isExecuted) this else {
+            // TODO use clone method in OkHttp 3.5
+            val field = javaClass.getDeclaredField("client").apply { isAccessible = true }
+            val client = field.get(this) as OkHttpClient
+            client.newCall(request())
+        }
+
+        // Wrap the call in a helper which handles both unsubscription and backpressure.
+        val requestArbiter = object : AtomicBoolean(), Producer, Subscription {
+            override fun request(n: Long) {
+                if (n == 0L || !compareAndSet(false, true)) return
+
+                try {
+                    val response = call.execute()
+                    if (!subscriber.isUnsubscribed) {
+                        subscriber.onNext(response)
+                        subscriber.onCompleted()
+                    }
+                } catch (error: Exception) {
+                    if (!subscriber.isUnsubscribed) {
+                        subscriber.onError(error)
+                    }
+                }
+            }
+
+            override fun unsubscribe() {
+                call.cancel()
+            }
+
+            override fun isUnsubscribed(): Boolean {
+                return call.isCanceled
+            }
+        }
+
+        subscriber.add(requestArbiter)
+        subscriber.setProducer(requestArbiter)
+    }
+}
+
+fun OkHttpClient.newCallWithProgress(request: Request, listener: ProgressListener): Call {
+    val progressClient = newBuilder()
+            .cache(null)
+            .addNetworkInterceptor { chain ->
+                val originalResponse = chain.proceed(chain.request())
+                originalResponse.newBuilder()
+                        .body(ProgressResponseBody(originalResponse.body(), listener))
+                        .build()
+            }
+            .build()
+
+    return progressClient.newCall(request)
+}