behavior: add option to pause when a song repeats

Add a new option to pause playback whenever a song loops [e.g while in
LoopMode.TRACK]. This does mean that we can no longer use exoplayer's
native looping system, but it doesn't seem to be that much of an issue.

Resolves #29.

app/src/main/java/org/oxycblt/auxio/playback/system/PlaybackNotification.kt

@@ -160,7 +160,7 @@ class PlaybackNotification private constructor(
             iconRes, actionName,
             PendingIntent.getBroadcast(
                 context, REQUEST_CODE,
-                Intent(actionName), PendingIntent.FLAG_UPDATE_CURRENT
+                Intent(actionName), PendingIntent.FLAG_UPDATE_CURRENT,
             )
         )
 

app/src/main/java/org/oxycblt/auxio/playback/system/PlaybackService.kt

@@ -188,7 +188,17 @@ class PlaybackService : Service(), Player.Listener, PlaybackStateManager.Callbac
                 releaseWakelock()
             }
 
-            Player.STATE_ENDED -> playbackManager.next()
+            Player.STATE_ENDED -> {
+                if (playbackManager.loopMode == LoopMode.TRACK) {
+                    playbackManager.rewind()
+
+                    if (settingsManager.pauseOnLoop) {
+                        playbackManager.setPlaying(false)
+                    }
+                } else {
+                    playbackManager.next()
+                }
+            }
 
             else -> {}
         }
@@ -249,12 +259,6 @@ class PlaybackService : Service(), Player.Listener, PlaybackStateManager.Callbac
     }
 
     override fun onLoopUpdate(loopMode: LoopMode) {
-        player.repeatMode = if (loopMode == LoopMode.TRACK) {
-            Player.REPEAT_MODE_ONE
-        } else {
-            Player.REPEAT_MODE_OFF
-        }
-
         if (!settingsManager.useAltNotifAction) {
             notification.setLoop(this, loopMode)
 

app/src/main/java/org/oxycblt/auxio/settings/SettingsManager.kt

@@ -97,6 +97,10 @@ class SettingsManager private constructor(context: Context) :
     val rewindWithPrev: Boolean
         get() = sharedPrefs.getBoolean(KEY_PREV_REWIND, true)
 
+    /** Whether [LoopMode.TRACK] should pause when the track repeats */
+    val pauseOnLoop: Boolean
+        get() = sharedPrefs.getBoolean(KEY_LOOP_PAUSE, false)
+
     /** The current [SortMode] of the library. */
     var librarySortMode: SortMode
         get() = sharedPrefs.getData(KEY_LIB_SORT_MODE, SortMode::fromInt) ?: SortMode.ALPHA_DOWN
@@ -214,6 +218,7 @@ class SettingsManager private constructor(context: Context) :
         const val KEY_SONG_PLAYBACK_MODE = "KEY_SONG_PLAY_MODE2"
         const val KEY_KEEP_SHUFFLE = "KEY_KEEP_SHUFFLE"
         const val KEY_PREV_REWIND = "KEY_PREV_REWIND"
+        const val KEY_LOOP_PAUSE = "KEY_LOOP_PAUSE"
 
         const val KEY_SAVE_STATE = "KEY_SAVE_STATE"
         const val KEY_BLACKLIST = "KEY_BLACKLIST"

app/src/main/res/values/strings.xml

@@ -62,8 +62,8 @@
     <string name="setting_theme_day">Light</string>
     <string name="setting_theme_night">Dark</string>
     <string name="setting_accent">Accent</string>
-    <string name="setting_black_mode">Black night theme</string>
-    <string name="setting_black_mode_desc">Use a pure-black night theme</string>
+    <string name="setting_black_mode">Black theme</string>
+    <string name="setting_black_mode_desc">Use a pure-black dark theme</string>
 
     <string name="setting_display">Display</string>
     <string name="setting_lib_display">Library Items</string>
@@ -89,6 +89,8 @@
     <string name="setting_behavior_keep_shuffle_desc">Keep shuffle on when playing a new song</string>
     <string name="setting_behavior_rewind_prev">Rewind before skipping back</string>
     <string name="setting_behavior_rewind_prev_desc">Rewind before skipping to the previous song</string>
+    <string name="setting_behavior_loop_pause">Pause on repeat</string>
+    <string name="setting_behavior_loop_pause_desc">Pause when a song repeats</string>
 
     <string name="setting_content">Content</string>
     <string name="setting_content_save">Save playback state</string>
@@ -157,7 +159,6 @@
     <string name="format_next_from">Next From: %s</string>
     <string name="format_songs_loaded">Songs loaded: %d</string>
 
-
     <plurals name="format_song_count">
         <item quantity="one">%d Song</item>
         <item quantity="other">%d Songs</item>

app/src/main/res/xml/prefs_main.xml

@@ -126,6 +126,14 @@
             app:summary="@string/setting_behavior_rewind_prev_desc"
             app:title="@string/setting_behavior_rewind_prev" />
 
+        <SwitchPreference
+            app:allowDividerBelow="false"
+            app:defaultValue="false"
+            app:iconSpaceReserved="false"
+            app:key="KEY_LOOP_PAUSE"
+            app:summary="@string/setting_behavior_loop_pause_desc"
+            app:title="@string/setting_behavior_loop_pause" />
+
     </PreferenceCategory>
 
     <PreferenceCategory