music: extend equality impls

Extend the music equals/hashCode implementations to take into account
the raw music.

This way, items that change in non-UID metadata are actually considered
different at runtime while UIDs can still persist the data in a stable
manner.

app/src/main/java/org/oxycblt/auxio/detail/PlaylistDetailFragment.kt

@@ -127,7 +127,7 @@ class PlaylistDetailFragment :
                 true
             }
             R.id.action_delete -> {
-                musicModel.createPlaylist()
+                musicModel.deletePlaylist(currentPlaylist)
                 true
             }
             else -> false

app/src/main/java/org/oxycblt/auxio/music/device/DeviceMusicImpl.kt

@@ -34,10 +34,6 @@ import org.oxycblt.auxio.util.toUuidOrNull
 import org.oxycblt.auxio.util.unlikelyToBeNull
 import org.oxycblt.auxio.util.update
 
-// TODO: Entirely rework music equality such that it's not completely UID-focused and actually
-//  takes metadata into account
-// TODO: Reduce need for raw objects to save some memory
-
 /**
  * Library-backed implementation of [Song].
  *
@@ -45,7 +41,7 @@ import org.oxycblt.auxio.util.update
  * @param musicSettings [MusicSettings] to for user parsing configuration.
  * @author Alexander Capehart (OxygenCobalt)
  */
-class SongImpl(rawSong: RawSong, musicSettings: MusicSettings) : Song {
+class SongImpl(private val rawSong: RawSong, musicSettings: MusicSettings) : Song {
     override val uid =
         // Attempt to use a MusicBrainz ID first before falling back to a hashed UID.
         rawSong.musicBrainzId?.toUuidOrNull()?.let { Music.UID.musicBrainz(MusicMode.SONGS, it) }
@@ -89,9 +85,9 @@ class SongImpl(rawSong: RawSong, musicSettings: MusicSettings) : Song {
     override val album: Album
         get() = unlikelyToBeNull(_album)
 
-    // Note: Only compare by UID so songs that differ only in MBID are treated differently.
-    override fun hashCode() = uid.hashCode()
-    override fun equals(other: Any?) = other is Song && uid == other.uid
+    override fun hashCode() = 31 * uid.hashCode() + rawSong.hashCode()
+    override fun equals(other: Any?) =
+        other is SongImpl && uid == other.uid && rawSong == other.rawSong
 
     private val artistMusicBrainzIds = rawSong.artistMusicBrainzIds.parseMultiValue(musicSettings)
     private val artistNames = rawSong.artistNames.parseMultiValue(musicSettings)
@@ -248,11 +244,15 @@ class AlbumImpl(
     override val durationMs: Long
     override val dateAdded: Long
 
-    // Note: Append song contents to MusicParent equality so that Groups with
-    // the same UID but different contents are not equal.
-    override fun hashCode() = 31 * uid.hashCode() + songs.hashCode()
+    override fun hashCode(): Int {
+        var hashCode = uid.hashCode()
+        hashCode = 31 * hashCode + rawAlbum.hashCode()
+        hashCode = 31 * hashCode + songs.hashCode()
+        return hashCode
+    }
+
     override fun equals(other: Any?) =
-        other is AlbumImpl && uid == other.uid && songs == other.songs
+        other is AlbumImpl && uid == other.uid && rawAlbum == other.rawAlbum && songs == other.songs
 
     private val _artists = mutableListOf<ArtistImpl>()
     override val artists: List<Artist>
@@ -341,9 +341,18 @@ class ArtistImpl(
 
     // Note: Append song contents to MusicParent equality so that artists with
     // the same UID but different songs are not equal.
-    override fun hashCode() = 31 * uid.hashCode() + songs.hashCode()
+    override fun hashCode(): Int {
+        var hashCode = uid.hashCode()
+        hashCode = 31 * hashCode + rawArtist.hashCode()
+        hashCode = 31 * hashCode + songs.hashCode()
+        return hashCode
+    }
+
     override fun equals(other: Any?) =
-        other is ArtistImpl && uid == other.uid && songs == other.songs
+        other is ArtistImpl &&
+            uid == other.uid &&
+            rawArtist == other.rawArtist &&
+            songs == other.songs
 
     override lateinit var genres: List<Genre>
 
@@ -422,11 +431,15 @@ class GenreImpl(
     override val artists: List<Artist>
     override val durationMs: Long
 
-    // Note: Append song contents to MusicParent equality so that Groups with
-    // the same UID but different contents are not equal.
-    override fun hashCode() = 31 * uid.hashCode() + songs.hashCode()
+    override fun hashCode(): Int {
+        var hashCode = uid.hashCode()
+        hashCode = 31 * hashCode + rawGenre.hashCode()
+        hashCode = 31 * hashCode + songs.hashCode()
+        return hashCode
+    }
+
     override fun equals(other: Any?) =
-        other is GenreImpl && uid == other.uid && songs == other.songs
+        other is GenreImpl && uid == other.uid && rawGenre == other.rawGenre && songs == other.songs
 
     init {
         val distinctAlbums = mutableSetOf<Album>()

app/src/main/java/org/oxycblt/auxio/music/device/RawMusic.kt

@@ -30,7 +30,7 @@ import org.oxycblt.auxio.music.metadata.*
  *
  * @author Alexander Capehart (OxygenCobalt)
  */
-class RawSong(
+data class RawSong(
     /**
      * The ID of the [SongImpl]'s audio file, obtained from MediaStore. Note that this ID is highly
      * unstable and should only be used for accessing the audio file.
@@ -95,7 +95,7 @@ class RawSong(
  *
  * @author Alexander Capehart (OxygenCobalt)
  */
-class RawAlbum(
+data class RawAlbum(
     /**
      * The ID of the [AlbumImpl]'s grouping, obtained from MediaStore. Note that this ID is highly
      * unstable and should only be used for accessing the system-provided cover art.
@@ -142,7 +142,7 @@ class RawAlbum(
  *
  * @author Alexander Capehart (OxygenCobalt)
  */
-class RawArtist(
+data class RawArtist(
     /** @see Music.UID */
     val musicBrainzId: UUID? = null,
     /** @see Music.name */
@@ -184,7 +184,7 @@ class RawArtist(
  *
  * @author Alexander Capehart (OxygenCobalt)
  */
-class RawGenre(
+data class RawGenre(
     /** @see Music.name */
     val name: String? = null
 ) {

app/src/main/java/org/oxycblt/auxio/music/picker/NewPlaylistDialog.kt

@@ -61,7 +61,6 @@ class NewPlaylistDialog : ViewBindingDialogFragment<DialogPlaylistNameBinding>()
                     }
                 // TODO: Navigate to playlist if there are songs in it
                 musicModel.createPlaylist(name, pendingPlaylist.songs)
-                pickerModel.dropPendingAddition()
                 requireContext().showToast(R.string.lng_playlist_created)
                 findNavController().apply {
                     navigateUp()

app/src/main/java/org/oxycblt/auxio/music/picker/PlaylistPickerViewModel.kt

@@ -156,11 +156,6 @@ class PlaylistPickerViewModel @Inject constructor(private val musicRepository: M
         refreshPlaylistChoices(songs)
     }
 
-    /** Drop any pending songs to add since a playlist has already been found for them. */
-    fun dropPendingAddition() {
-        _currentPendingSongs.value = null
-    }
-
     private fun refreshPlaylistChoices(songs: List<Song>) {
         val userLibrary = musicRepository.userLibrary ?: return
         _playlistChoices.value =

app/src/main/java/org/oxycblt/auxio/music/user/UserLibrary.kt

@@ -112,11 +112,6 @@ private class UserLibraryImpl(
     override val playlists: List<Playlist>
         get() = playlistMap.values.toList()
 
-    init {
-        // TODO: Actually read playlists
-        createPlaylist("Playlist 1", deviceLibrary.songs.slice(58..200))
-    }
-
     override fun findPlaylist(uid: Music.UID) = playlistMap[uid]
 
     override fun findPlaylist(name: String) = playlistMap.values.find { it.name.raw == name }