ampache_react/app/reducers/webplayer.js

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/**
* This implements the webplayer reducers.
*/
// NPM imports
import Immutable from "immutable";
// Local imports
import { createReducer } from "../utils";
// Models
import { stateRecord } from "../models/webplayer";
// Actions
import {
PLAY_PAUSE,
STOP_PLAYBACK,
SET_PLAYLIST,
PUSH_SONG,
POP_SONG,
JUMP_TO_SONG,
PLAY_PREVIOUS,
PLAY_NEXT,
TOGGLE_RANDOM,
TOGGLE_REPEAT,
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TOGGLE_MUTE,
SET_VOLUME,
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INVALIDATE_STORE } from "../actions";
/**
* Initial state
*/
var initialState = new stateRecord();
/**
* Helper functions
*/
/**
* Stop playback in reducer helper.
*
* @param state Current state to update.
*/
function stopPlayback(state) {
return (
state
.set("isPlaying", false)
.set("currentIndex", 0)
.set("playlist", new Immutable.List())
);
}
/**
* Reducers
*/
export default createReducer(initialState, {
[PLAY_PAUSE]: (state, payload) => {
// Force play or pause
return state.set("isPlaying", payload.isPlaying);
},
[STOP_PLAYBACK]: (state) => {
// Clear the playlist
return stopPlayback(state);
},
[SET_PLAYLIST]: (state, payload) => {
// Set current playlist, reset playlist index
return (
state
.set("playlist", new Immutable.List(payload.playlist))
.set("currentIndex", 0)
);
},
[PUSH_SONG]: (state, payload) => {
// Push song to playlist
const newPlaylist = state.get("playlist").insert(payload.index, payload.song);
return state.set("playlist", newPlaylist);
},
[POP_SONG]: (state, payload) => {
// Pop song from playlist
return state.deleteIn(["playlist", payload.index]);
},
[JUMP_TO_SONG]: (state, payload) => {
// Set current index
const newCurrentIndex = state.get("playlist").findKey(x => x == payload.song);
return state.set("currentIndex", newCurrentIndex);
},
[PLAY_PREVIOUS]: (state) => {
const newIndex = state.get("currentIndex") - 1;
if (newIndex < 0) {
// If there is an overlow on the left of the playlist, just stop
// playback
return stopPlayback(state);
} else {
return state.set("currentIndex", newIndex);
}
},
[PLAY_NEXT]: (state) => {
const newIndex = state.get("currentIndex") + 1;
if (newIndex > state.get("playlist").size) {
// If there is an overflow, just stop playback
return stopPlayback(state);
} else {
// Else, play next item
return state.set("currentIndex", newIndex);
}
},
[TOGGLE_RANDOM]: (state) => {
return state.set("isRandom", !state.get("isRandom"));
},
[TOGGLE_REPEAT]: (state) => {
return state.set("isRepeat", !state.get("isRepeat"));
},
[TOGGLE_MUTE]: (state) => {
return state.set("isMute", !state.get("isMute"));
},
[SET_VOLUME]: (state, payload) => {
return state.set("volume", payload.volume);
},
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[INVALIDATE_STORE]: () => {
return new stateRecord();
},
});