feat: allow resuming playback after disconnect

app/src/main/java/com/github/libretube/extensions/Player.kt

@@ -0,0 +1,19 @@
+package com.github.libretube.extensions
+
+import androidx.media3.common.Player
+
+fun Player.togglePlayPauseState() {
+    when {
+        playerError != null -> {
+            prepare()
+            play()
+        }
+
+       !isPlaying && playbackState == Player.STATE_ENDED -> {
+            seekTo(0)
+        }
+
+        !isPlaying && !isLoading -> play()
+        else -> pause()
+    }
+}

app/src/main/java/com/github/libretube/ui/fragments/PlayerFragment.kt

@@ -79,6 +79,7 @@ import com.github.libretube.extensions.serializableExtra
 import com.github.libretube.extensions.setMetadata
 import com.github.libretube.extensions.toID
 import com.github.libretube.extensions.toastFromMainDispatcher
+import com.github.libretube.extensions.togglePlayPauseState
 import com.github.libretube.extensions.updateParameters
 import com.github.libretube.helpers.BackgroundHelper
 import com.github.libretube.helpers.ImageHelper
@@ -391,14 +392,7 @@ class PlayerFragment : Fragment(), OnlinePlayerOptions {
         playerBinding.autoPlay.isVisible = true
 
         binding.playImageView.setOnClickListener {
-            when {
+            exoPlayer.togglePlayPauseState()
-                !exoPlayer.isPlaying && exoPlayer.playbackState == Player.STATE_ENDED -> {
-                    exoPlayer.seekTo(0)
-                }
-
-                !exoPlayer.isPlaying -> exoPlayer.play()
-                else -> exoPlayer.pause()
-            }
         }
 
         // video description and chapters toggle

app/src/main/java/com/github/libretube/ui/views/CustomExoPlayerView.kt

@@ -41,6 +41,7 @@ import com.github.libretube.extensions.dpToPx
 import com.github.libretube.extensions.normalize
 import com.github.libretube.extensions.round
 import com.github.libretube.extensions.seekBy
+import com.github.libretube.extensions.togglePlayPauseState
 import com.github.libretube.helpers.AudioHelper
 import com.github.libretube.helpers.BrightnessHelper
 import com.github.libretube.helpers.PlayerHelper
@@ -156,14 +157,7 @@ open class CustomExoPlayerView(
         }
 
         binding.playPauseBTN.setOnClickListener {
-            when {
+            player?.togglePlayPauseState()
-                player?.isPlaying == false && player?.playbackState == Player.STATE_ENDED -> {
-                    player?.seekTo(0)
-                }
-
-                player?.isPlaying == false && player?.isLoading == false -> player?.play()
-                else -> player?.pause()
-            }
         }
 
         player?.addListener(object : Player.Listener {

app/src/main/java/com/github/libretube/util/NowPlayingNotification.kt

@@ -299,6 +299,7 @@ class NowPlayingNotification(
             }
 
             PLAY_PAUSE -> {
+                if (player.playerError != null) player.prepare()
                 if (player.isPlaying) player.pause() else player.play()
             }