Add Album list support in Offline

ultrasonic/src/main/kotlin/org/moire/ultrasonic/data/AlbumDao.kt

@@ -19,6 +19,12 @@ interface AlbumDao : GenericDao<Album> {
     @Query("SELECT * FROM albums")
     fun get(): List<Album>
 
+    /**
+     * Get all albums in a specific range
+     */
+    @Query("SELECT * FROM albums LIMIT :offset,:size")
+    fun get(size: Int, offset: Int = 0): List<Album>
+
     /**
      * Get album by id
      */

ultrasonic/src/main/kotlin/org/moire/ultrasonic/fragment/MainFragment.kt

@@ -66,17 +66,17 @@ class MainFragment : Fragment(), KoinComponent {
 
     override fun onResume() {
         super.onResume()
-        var shouldRestart = false
+        var shouldRelayout = false
         val currentId3Setting = Settings.shouldUseId3Tags
 
         // If setting has changed...
-        if (currentId3Setting != cachedId3Setting) {
-            cachedId3Setting = currentId3Setting
-            shouldRestart = true
+        if (currentId3Setting != useId3) {
+            useId3 = currentId3Setting
+            shouldRelayout = true
         }
 
         // then setup the list anew.
-        if (shouldRestart) {
+        if (shouldRelayout) {
             setupItemVisibility()
         }
     }
@@ -109,17 +109,19 @@ class MainFragment : Fragment(), KoinComponent {
 
     private fun setupItemVisibility() {
         // Cache some values
-        cachedId3Setting = Settings.shouldUseId3Tags
+        useId3 = Settings.shouldUseId3Tags
+        useId3Offline = Settings.useId3TagsOffline
+
         val isOnline = !isOffline()
 
         // Music
         musicTitle.isVisible = true
         artistsButton.isVisible = true
-        albumsButton.isVisible = isOnline
+        albumsButton.isVisible = isOnline || useId3Offline
         genresButton.isVisible = true
 
         // Songs
-        songsTitle.isVisible = isOnline
+        songsTitle.isVisible = true
         randomSongsButton.isVisible = true
         songsStarredButton.isVisible = isOnline
 
@@ -128,7 +130,7 @@ class MainFragment : Fragment(), KoinComponent {
         albumsNewestButton.isVisible = isOnline
         albumsRecentButton.isVisible = isOnline
         albumsFrequentButton.isVisible = isOnline
-        albumsHighestButton.isVisible = isOnline && !cachedId3Setting
+        albumsHighestButton.isVisible = isOnline && !useId3
         albumsRandomButton.isVisible = isOnline
         albumsStarredButton.isVisible = isOnline
         albumsAlphaByNameButton.isVisible = isOnline
@@ -240,6 +242,7 @@ class MainFragment : Fragment(), KoinComponent {
     }
 
     companion object {
-        private var cachedId3Setting = false
+        private var useId3 = false
+        private var useId3Offline = false
     }
 }

ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/OfflineMusicService.kt

@@ -328,7 +328,8 @@ class OfflineMusicService : MusicService, KoinComponent {
         offset: Int,
         musicFolderId: String?
     ): List<Album> {
-        throw OfflineException("getAlbumList2 isn't available in offline mode")
+        // TODO: Implement filtering by musicFolder?
+        return cachedAlbums.get(size, offset)
     }
 
     @Throws(Exception::class)