detail: drop equality checks

Most of the list creation operations are O(1), and the stateflow
equality makes it not matter anyway.

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

@@ -46,8 +46,6 @@ import org.oxycblt.auxio.util.*
  * [ViewModel] that manages the Song, Album, Artist, and Genre detail views. Keeps track of the
  * current item they are showing, sub-data to display, and configuration.
  *
- * FIXME: Need to do direct item comparison in equality checks, or reset on navigation.
- *
  * @author Alexander Capehart (OxygenCobalt)
  */
 @HiltViewModel
@@ -163,9 +161,7 @@ constructor(
     var playlistSongSort: Sort
         get() = musicSettings.playlistSongSort
         set(value) {
-            logD(value)
             musicSettings.playlistSongSort = value
-            logD(musicSettings.playlistSongSort)
             // Refresh the playlist list to reflect the new sort.
             currentPlaylist.value?.let { refreshPlaylistList(it, true) }
         }
@@ -234,10 +230,6 @@ constructor(
      * @param uid The UID of the [Song] to load. Must be valid.
      */
     fun setSongUid(uid: Music.UID) {
-        if (_currentSong.value?.uid == uid) {
-            // Nothing to do.
-            return
-        }
         logD("Opening Song [uid: $uid]")
         _currentSong.value = musicRepository.deviceLibrary?.findSong(uid)?.also(::refreshAudioInfo)
     }
@@ -249,10 +241,6 @@ constructor(
      * @param uid The [Music.UID] of the [Album] to update [currentAlbum] to. Must be valid.
      */
     fun setAlbumUid(uid: Music.UID) {
-        if (_currentAlbum.value?.uid == uid) {
-            // Nothing to do.
-            return
-        }
         logD("Opening Album [uid: $uid]")
         _currentAlbum.value =
             musicRepository.deviceLibrary?.findAlbum(uid)?.also(::refreshAlbumList)
@@ -265,10 +253,6 @@ constructor(
      * @param uid The [Music.UID] of the [Artist] to update [currentArtist] to. Must be valid.
      */
     fun setArtistUid(uid: Music.UID) {
-        if (_currentArtist.value?.uid == uid) {
-            // Nothing to do.
-            return
-        }
         logD("Opening Artist [uid: $uid]")
         _currentArtist.value =
             musicRepository.deviceLibrary?.findArtist(uid)?.also(::refreshArtistList)
@@ -281,10 +265,6 @@ constructor(
      * @param uid The [Music.UID] of the [Genre] to update [currentGenre] to. Must be valid.
      */
     fun setGenreUid(uid: Music.UID) {
-        if (_currentGenre.value?.uid == uid) {
-            // Nothing to do.
-            return
-        }
         logD("Opening Genre [uid: $uid]")
         _currentGenre.value =
             musicRepository.deviceLibrary?.findGenre(uid)?.also(::refreshGenreList)
@@ -297,10 +277,6 @@ constructor(
      * @param uid The [Music.UID] of the [Playlist] to update [currentPlaylist] to. Must be valid.
      */
     fun setPlaylistUid(uid: Music.UID) {
-        if (_currentPlaylist.value?.uid == uid) {
-            // Nothing to do.
-            return
-        }
         logD("Opening Playlist [uid: $uid]")
         _currentPlaylist.value =
             musicRepository.userLibrary?.findPlaylist(uid)?.also(::refreshPlaylistList)

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

@@ -170,7 +170,7 @@ private class DeviceLibraryImpl(rawSongs: List<RawSong>, settings: MusicSettings
      */
     private fun buildSongs(rawSongs: List<RawSong>, settings: MusicSettings) =
         Sort(Sort.Mode.ByName, Sort.Direction.ASCENDING)
-            .songs(rawSongs.map { SongImpl(it, settings) }.distinct())
+            .songs(rawSongs.map { SongImpl(it, settings) }.distinctBy { it.uid })
 
     /**
      * Build a list of [Album]s from the given [Song]s.

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

@@ -34,6 +34,9 @@ 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
+
 /**
  * Library-backed implementation of [Song].
  *

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

@@ -82,7 +82,6 @@ class AddToPlaylistDialog :
 
     override fun onClick(item: PlaylistChoice, viewHolder: RecyclerView.ViewHolder) {
         musicModel.addToPlaylist(pickerModel.currentPendingSongs.value ?: return, item.playlist)
-        pickerModel.confirmPlaylistAddition()
         requireContext().showToast(R.string.lng_playlist_added)
         findNavController().navigateUp()
     }

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

@@ -60,7 +60,7 @@ class NewPlaylistDialog : ViewBindingDialogFragment<DialogPlaylistNameBinding>()
                     }
                 // TODO: Navigate to playlist if there are songs in it
                 musicModel.createPlaylist(name, pendingPlaylist.songs)
-                pickerModel.confirmPlaylistCreation()
+                pickerModel.dropPendingAddition()
                 requireContext().showToast(R.string.lng_playlist_created)
             }
             .setNegativeButton(R.string.lbl_cancel, null)

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

@@ -105,10 +105,6 @@ class PlaylistPickerViewModel @Inject constructor(private val musicRepository: M
      * @param songUids The [Music.UID]s of songs to be present in the playlist.
      */
     fun setPendingPlaylist(context: Context, songUids: Array<Music.UID>) {
-        if (currentPendingPlaylist.value?.songs?.map { it.uid } == songUids) {
-            // Nothing to do.
-            return
-        }
         val deviceLibrary = musicRepository.deviceLibrary ?: return
         val songs = songUids.mapNotNull(deviceLibrary::findSong)
 
@@ -146,15 +142,6 @@ class PlaylistPickerViewModel @Inject constructor(private val musicRepository: M
             }
     }
 
-    /** Confirm the playlist creation process as completed. */
-    fun confirmPlaylistCreation() {
-        // Confirm any playlist additions if needed, as the creation process may have been started
-        // by it and is still waiting on a result.
-        confirmPlaylistAddition()
-        _currentPendingPlaylist.value = null
-        _chosenName.value = ChosenName.Empty
-    }
-
     /**
      * Update the current [Song]s that to show playlist add choices for. Will do nothing if already
      * equal.
@@ -169,8 +156,8 @@ class PlaylistPickerViewModel @Inject constructor(private val musicRepository: M
         refreshPlaylistChoices(songs)
     }
 
-    /** Mark the addition process as complete. */
-    fun confirmPlaylistAddition() {
+    /** Drop any pending songs to add since a playlist has already been found for them. */
+    fun dropPendingAddition() {
         _currentPendingSongs.value = null
     }
 

app/src/test/java/org/oxycblt/auxio/music/FakeMusicRepository.kt

@@ -62,6 +62,10 @@ open class FakeMusicRepository : MusicRepository {
         throw NotImplementedError()
     }
 
+    override fun deletePlaylist(playlist: Playlist) {
+        throw NotImplementedError()
+    }
+
     override fun addToPlaylist(songs: List<Song>, playlist: Playlist) {
         throw NotImplementedError()
     }