add start download now (#5386)

* add start download now

download now for selected chapter
from j2k

Co-Authored-By: Jays2Kings <jays@outlook.com>

* change string to action

* move to bottom

* oopsie

Co-authored-by: Jays2Kings <jays@outlook.com>

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

@@ -95,6 +95,23 @@ class DownloadManager(private val context: Context) {
         downloader.clearQueue(isNotification)
     }
 
+    fun startDownloadNow(chapter: Chapter) {
+        val download = downloader.queue.find { it.chapter.id == chapter.id } ?: return
+        val queue = downloader.queue.toMutableList()
+        queue.remove(download)
+        queue.add(0, download)
+        reorderQueue(queue)
+        if (isPaused()) {
+            if (DownloadService.isRunning(context)) {
+                downloader.start()
+            } else {
+                DownloadService.start(context)
+            }
+        }
+    }
+
+    fun isPaused() = downloader.isPaused()
+
     /**
      * Reorders the download queue.
      *

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

@@ -19,6 +19,7 @@ import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.util.lang.plusAssign
 import eu.kanade.tachiyomi.util.system.acquireWakeLock
 import eu.kanade.tachiyomi.util.system.connectivityManager
+import eu.kanade.tachiyomi.util.system.isServiceRunning
 import eu.kanade.tachiyomi.util.system.notification
 import eu.kanade.tachiyomi.util.system.toast
 import rx.android.schedulers.AndroidSchedulers
@@ -58,6 +59,16 @@ class DownloadService : Service() {
         fun stop(context: Context) {
             context.stopService(Intent(context, DownloadService::class.java))
         }
+
+        /**
+         * 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 context.isServiceRunning(DownloadService::class.java)
+        }
     }
 
     private val downloadManager: DownloadManager by injectLazy()

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

@@ -157,6 +157,11 @@ class Downloader(
         notifier.paused = true
     }
 
+    /**
+     * Check if downloader is paused
+     */
+    fun isPaused() = !isRunning
+
     /**
      * Removes everything from the queue.
      *