search: add playlist results

Add playlist results to the search view.

app/src/main/java/org/oxycblt/auxio/search/SearchAdapter.kt

@@ -43,6 +43,7 @@ class SearchAdapter(private val listener: SelectableListListener<Music>) :
             is Album -> AlbumViewHolder.VIEW_TYPE
             is Artist -> ArtistViewHolder.VIEW_TYPE
             is Genre -> GenreViewHolder.VIEW_TYPE
+            is Playlist -> PlaylistViewHolder.VIEW_TYPE
             is BasicHeader -> BasicHeaderViewHolder.VIEW_TYPE
             else -> super.getItemViewType(position)
         }
@@ -53,6 +54,7 @@ class SearchAdapter(private val listener: SelectableListListener<Music>) :
             AlbumViewHolder.VIEW_TYPE -> AlbumViewHolder.from(parent)
             ArtistViewHolder.VIEW_TYPE -> ArtistViewHolder.from(parent)
             GenreViewHolder.VIEW_TYPE -> GenreViewHolder.from(parent)
+            PlaylistViewHolder.VIEW_TYPE -> PlaylistViewHolder.from(parent)
             BasicHeaderViewHolder.VIEW_TYPE -> BasicHeaderViewHolder.from(parent)
             else -> error("Invalid item type $viewType")
         }
@@ -64,6 +66,7 @@ class SearchAdapter(private val listener: SelectableListListener<Music>) :
             is Album -> (holder as AlbumViewHolder).bind(item, listener)
             is Artist -> (holder as ArtistViewHolder).bind(item, listener)
             is Genre -> (holder as GenreViewHolder).bind(item, listener)
+            is Playlist -> (holder as PlaylistViewHolder).bind(item, listener)
             is BasicHeader -> (holder as BasicHeaderViewHolder).bind(item)
         }
     }

app/src/main/java/org/oxycblt/auxio/search/SearchEngine.kt

@@ -26,6 +26,7 @@ import org.oxycblt.auxio.music.Album
 import org.oxycblt.auxio.music.Artist
 import org.oxycblt.auxio.music.Genre
 import org.oxycblt.auxio.music.Music
+import org.oxycblt.auxio.music.Playlist
 import org.oxycblt.auxio.music.Song
 import org.oxycblt.auxio.music.info.Name
 
@@ -33,8 +34,6 @@ import org.oxycblt.auxio.music.info.Name
  * Implements the fuzzy-ish searching algorithm used in the search view.
  *
  * @author Alexander Capehart
- *
- * TODO: Add playlists
  */
 interface SearchEngine {
     /**
@@ -53,12 +52,14 @@ interface SearchEngine {
      * @param albums A list of [Album]s, null if empty.
      * @param artists A list of [Artist]s, null if empty.
      * @param genres A list of [Genre]s, null if empty.
+     * @param playlists A list of [Playlist], null if empty.
      */
     data class Items(
         val songs: List<Song>?,
         val albums: List<Album>?,
         val artists: List<Artist>?,
-        val genres: List<Genre>?
+        val genres: List<Genre>?,
+        val playlists: List<Playlist>?
     )
 }
 
@@ -72,7 +73,8 @@ class SearchEngineImpl @Inject constructor(@ApplicationContext private val conte
                 },
             albums = items.albums?.searchListImpl(query),
             artists = items.artists?.searchListImpl(query),
-            genres = items.genres?.searchListImpl(query))
+            genres = items.genres?.searchListImpl(query),
+            playlists = items.playlists?.searchListImpl(query))
 
     /**
      * Search a given [Music] list.

app/src/main/java/org/oxycblt/auxio/search/SearchViewModel.kt

@@ -34,6 +34,7 @@ import org.oxycblt.auxio.list.Item
 import org.oxycblt.auxio.list.Sort
 import org.oxycblt.auxio.music.*
 import org.oxycblt.auxio.music.device.DeviceLibrary
+import org.oxycblt.auxio.music.user.UserLibrary
 import org.oxycblt.auxio.playback.PlaybackSettings
 import org.oxycblt.auxio.util.logD
 
@@ -73,7 +74,7 @@ constructor(
     }
 
     override fun onMusicChanges(changes: MusicRepository.Changes) {
-        if (changes.deviceLibrary && musicRepository.deviceLibrary != null) {
+        if (changes.deviceLibrary || changes.userLibrary) {
             search(lastQuery)
         }
     }
@@ -90,7 +91,8 @@ constructor(
         lastQuery = query
 
         val deviceLibrary = musicRepository.deviceLibrary
-        if (query.isNullOrEmpty() || deviceLibrary == null) {
+        val userLibrary = musicRepository.userLibrary
+        if (query.isNullOrEmpty() || deviceLibrary == null || userLibrary == null) {
             logD("Search query is not applicable.")
             _searchResults.value = listOf()
             return
@@ -101,11 +103,16 @@ constructor(
         // Searching is time-consuming, so do it in the background.
         currentSearchJob =
             viewModelScope.launch {
-                _searchResults.value = searchImpl(deviceLibrary, query).also { yield() }
+                _searchResults.value =
+                    searchImpl(deviceLibrary, userLibrary, query).also { yield() }
             }
     }
 
-    private suspend fun searchImpl(deviceLibrary: DeviceLibrary, query: String): List<Item> {
+    private suspend fun searchImpl(
+        deviceLibrary: DeviceLibrary,
+        userLibrary: UserLibrary,
+        query: String
+    ): List<Item> {
         val filterMode = searchSettings.searchFilterMode
 
         val items =
@@ -115,33 +122,40 @@ constructor(
                     deviceLibrary.songs,
                     deviceLibrary.albums,
                     deviceLibrary.artists,
-                    deviceLibrary.genres)
+                    deviceLibrary.genres,
+                    userLibrary.playlists)
             } else {
                 SearchEngine.Items(
                     songs = if (filterMode == MusicMode.SONGS) deviceLibrary.songs else null,
                     albums = if (filterMode == MusicMode.ALBUMS) deviceLibrary.albums else null,
                     artists = if (filterMode == MusicMode.ARTISTS) deviceLibrary.artists else null,
-                    genres = if (filterMode == MusicMode.GENRES) deviceLibrary.genres else null)
+                    genres = if (filterMode == MusicMode.GENRES) deviceLibrary.genres else null,
+                    playlists =
+                        if (filterMode == MusicMode.PLAYLISTS) userLibrary.playlists else null)
             }
 
         val results = searchEngine.search(items, query)
 
         return buildList {
-            results.artists?.let { artists ->
+            results.artists?.let {
                 add(BasicHeader(R.string.lbl_artists))
-                addAll(SORT.artists(artists))
+                addAll(SORT.artists(it))
             }
-            results.albums?.let { albums ->
+            results.albums?.let {
                 add(BasicHeader(R.string.lbl_albums))
-                addAll(SORT.albums(albums))
+                addAll(SORT.albums(it))
             }
-            results.genres?.let { genres ->
+            results.playlists?.let {
+                add(BasicHeader(R.string.lbl_playlists))
+                addAll(SORT.playlists(it))
+            }
+            results.genres?.let {
                 add(BasicHeader(R.string.lbl_genres))
-                addAll(SORT.genres(genres))
+                addAll(SORT.genres(it))
             }
-            results.songs?.let { songs ->
+            results.songs?.let {
                 add(BasicHeader(R.string.lbl_songs))
-                addAll(SORT.songs(songs))
+                addAll(SORT.songs(it))
             }
         }
     }
@@ -158,7 +172,7 @@ constructor(
             MusicMode.ALBUMS -> R.id.option_filter_albums
             MusicMode.ARTISTS -> R.id.option_filter_artists
             MusicMode.GENRES -> R.id.option_filter_genres
-            MusicMode.PLAYLISTS -> R.id.option_filter_all // TODO: Handle
+            MusicMode.PLAYLISTS -> R.id.option_filter_playlists
             // Null maps to filtering nothing.
             null -> R.id.option_filter_all
         }
@@ -175,6 +189,7 @@ constructor(
                 R.id.option_filter_albums -> MusicMode.ALBUMS
                 R.id.option_filter_artists -> MusicMode.ARTISTS
                 R.id.option_filter_genres -> MusicMode.GENRES
+                R.id.option_filter_playlists -> MusicMode.PLAYLISTS
                 // Null maps to filtering nothing.
                 R.id.option_filter_all -> null
                 else -> error("Invalid option ID provided")

app/src/main/res/menu/menu_search.xml

@@ -28,6 +28,10 @@
                     android:id="@+id/option_filter_genres"
                     android:title="@string/lbl_genres"
                     app:showAsAction="never" />
+                <item
+                    android:id="@+id/option_filter_playlists"
+                    android:title="@string/lbl_playlists"
+                    app:showAsAction="never" />
             </group>
         </menu>
     </item>