Sync is now essentially fully atomic on the client side

Sync now aborts on most errors instead of continuing
Sync now holds screen, CPU and WIFI locks

app/src/main/java/eu/kanade/tachiyomi/source/online/all/EHentai.kt

@@ -12,7 +12,6 @@ import eu.kanade.tachiyomi.source.online.HttpSource
 import eu.kanade.tachiyomi.source.online.LewdSource
 import eu.kanade.tachiyomi.util.asJsoup
 import exh.metadata.EX_DATE_FORMAT
-import exh.metadata.ignore
 import exh.metadata.models.ExGalleryMetadata
 import exh.metadata.models.Tag
 import exh.metadata.nullIfBlank
@@ -20,6 +19,7 @@ import exh.metadata.parseHumanReadableByteCount
 import exh.ui.login.LoginController
 import exh.util.UriFilter
 import exh.util.UriGroup
+import exh.util.ignore
 import exh.util.urlImportFetchSearchManga
 import okhttp3.CacheControl
 import okhttp3.Headers

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryController.kt

@@ -571,6 +571,8 @@ class LibraryController(
         favSyncDialog?.dismiss()
         favSyncDialog = null
         oldSyncStatus = null
+        //Clear flags
+        releaseSyncLocks()
     }
 
     private fun buildDialog() = activity?.let {
@@ -586,13 +588,25 @@ class LibraryController(
                 ?.show()
     }
 
+    private fun takeSyncLocks() {
+        activity?.window?.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+    }
+
+    private fun releaseSyncLocks() {
+        activity?.window?.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+    }
+
     private fun updateSyncStatus(status: FavoritesSyncStatus) {
         when(status) {
             is FavoritesSyncStatus.Idle -> {
+                releaseSyncLocks()
+
                 favSyncDialog?.dismiss()
                 favSyncDialog = null
             }
             is FavoritesSyncStatus.Error -> {
+                releaseSyncLocks()
+
                 favSyncDialog?.dismiss()
                 favSyncDialog = buildDialog()
                         ?.title("Favorites sync error")
@@ -606,6 +620,8 @@ class LibraryController(
             }
             is FavoritesSyncStatus.Processing,
             is FavoritesSyncStatus.Initializing -> {
+                takeSyncLocks()
+
                 if(favSyncDialog == null || (oldSyncStatus != null
                         && oldSyncStatus !is FavoritesSyncStatus.Initializing
                         && oldSyncStatus !is FavoritesSyncStatus.Processing))
@@ -613,24 +629,6 @@ class LibraryController(
 
                 favSyncDialog?.setContent(status.message)
             }
-            is FavoritesSyncStatus.Complete -> {
-                favSyncDialog?.dismiss()
-
-                if(status.errors.isNotEmpty()) {
-                    favSyncDialog = buildDialog()
-                            ?.title("Favorites sync complete with errors")
-                            ?.content("Some errors occurred during the sync process:\n\n"
-                                    + status.errors.joinToString("\n"))
-                            ?.cancelable(false)
-                            ?.positiveText("Ok")
-                            ?.onPositive { _, _ ->
-                                presenter.favoritesSync.status.onNext(FavoritesSyncStatus.Idle())
-                            }
-                            ?.show()
-                } else {
-                    presenter.favoritesSync.status.onNext(FavoritesSyncStatus.Idle())
-                }
-            }
         }
         oldSyncStatus = status
     }

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsEhController.kt

@@ -10,6 +10,7 @@ import eu.kanade.tachiyomi.util.toast
 import exh.favorites.FavoritesIntroDialog
 import exh.favorites.LocalFavoritesStorage
 import exh.ui.login.LoginController
+import exh.util.trans
 import rx.android.schedulers.AndroidSchedulers
 import rx.schedulers.Schedulers
 
@@ -163,7 +164,13 @@ class SettingsEhController : SettingsController() {
                                 .content("Resetting the sync state can cause your next sync to be extremely slow.")
                                 .positiveText("Yes")
                                 .onPositive { _, _ ->
-                                    LocalFavoritesStorage().clearSnapshots()
+                                    LocalFavoritesStorage().apply {
+                                        getRealm().use {
+                                            it.trans {
+                                                clearSnapshots(it)
+                                            }
+                                        }
+                                    }
                                     it.toast("Sync state reset", Toast.LENGTH_LONG)
                                 }
                                 .negativeText("No")

app/src/main/java/eu/kanade/tachiyomi/util/ContextExtensions.kt

@@ -10,6 +10,7 @@ import android.content.IntentFilter
 import android.content.pm.PackageManager
 import android.content.res.Resources
 import android.net.ConnectivityManager
+import android.net.wifi.WifiManager
 import android.os.PowerManager
 import android.support.annotation.StringRes
 import android.support.v4.app.NotificationCompat
@@ -116,6 +117,12 @@ val Context.connectivityManager: ConnectivityManager
 val Context.powerManager: PowerManager
     get() = getSystemService(Context.POWER_SERVICE) as PowerManager
 
+/**
+ * Property to get the wifi manager from the context.
+ */
+val Context.wifiManager: WifiManager
+    get() = applicationContext.getSystemService(Context.WIFI_SERVICE) as WifiManager
+
 /**
  * Function used to send a local broadcast asynchronous
  *