feat: basic player commands

web/src/ts/player/index.ts

@@ -0,0 +1,103 @@
+import {
+    currentSource,
+    queueIdx,
+    repeat,
+    shuffle,
+    sources
+} from './state';
+import {
+    startTracking,
+    stopTracking
+} from './status-tracking';
+import type {
+    RepeatMode
+} from '../dtype/player';
+import {
+    addSongList
+} from './playlists/add';
+import {
+    playIndex
+} from './playlists';
+
+const next = () => {
+    playIndex( queueIdx.value + 1 );
+};
+
+const prev = () => {
+    // TODO: Back to beginning if more than some seconds have passed?
+    playIndex( queueIdx.value - 1 );
+};
+
+const play = () => {
+    if ( currentSource.value === '' ) return;
+
+    sources[currentSource.value]?.play();
+    startTracking();
+};
+
+const pause = () => {
+    if ( currentSource.value === '' ) return;
+
+    sources[currentSource.value]?.pause();
+    stopTracking();
+};
+
+/**
+ * Seek to a specific point in the song
+ * @param pos - Percentage of song, value in [0, 1]
+ */
+const seekTo = ( pos: number ) => {
+    if ( currentSource.value === '' ) return;
+
+    sources[currentSource.value]?.seekTo( pos );
+};
+
+const skip10 = () => {
+    if ( currentSource.value === '' ) return;
+
+    const source = sources[currentSource.value];
+    const duration = source?.getDuration() ?? -1;
+
+    seekTo( ( ( ( source?.getPlaybackPos() ?? 0 ) * duration ) + 10 ) / duration );
+};
+
+const back10 = () => {
+    if ( currentSource.value === '' ) return;
+
+    const source = sources[currentSource.value];
+    const duration = source?.getDuration() ?? -1;
+
+    seekTo( ( ( ( source?.getPlaybackPos() ?? 0 ) * duration ) - 10 ) / duration );
+};
+
+const setShuffle = ( enabled: boolean ) => {
+    // TODO: Shuffle the order
+    shuffle.value = enabled;
+};
+
+const setRepeat = ( mode: RepeatMode ) => {
+    repeat.value = mode;
+};
+
+const getSources = (): string[] => {
+    return Object.keys( sources );
+};
+
+const addSongFromSource = async ( source: string ) => {
+    addSongList( await sources[source]!.addSongsFromThisSource() );
+};
+
+export default {
+    play,
+    pause,
+    seekTo,
+    skip10,
+    back10,
+    setShuffle,
+    setRepeat,
+    playIndex,
+    getSources,
+    addSongFromSource,
+    next,
+    prev
+};