101 lines
2.1 KiB
TypeScript
101 lines
2.1 KiB
TypeScript
import { createPubSub } from '../pubsub';
|
|
import { AudioState } from './types';
|
|
|
|
export const createAudio = () => {
|
|
const pubsub = createPubSub();
|
|
const element = document.createElement('video');
|
|
let currentTime = 0;
|
|
|
|
let state: AudioState = {
|
|
duration: 0,
|
|
playing: false,
|
|
volume: 0,
|
|
};
|
|
|
|
const setState = (value: Partial<AudioState>) => {
|
|
state = { ...state, ...value };
|
|
|
|
pubsub.publish('change', state);
|
|
};
|
|
|
|
const setup = () => {
|
|
element.addEventListener('durationchange', () =>
|
|
setState({ duration: element.duration }),
|
|
);
|
|
|
|
element.addEventListener('playing', () => setState({ playing: true }));
|
|
|
|
element.addEventListener('pause', () => setState({ playing: false }));
|
|
|
|
element.addEventListener('timeupdate', () => {
|
|
const newCurrentTime = Math.round(element.currentTime);
|
|
|
|
if (currentTime !== newCurrentTime) {
|
|
currentTime = newCurrentTime;
|
|
|
|
pubsub.publish('change-current-time', currentTime);
|
|
}
|
|
});
|
|
|
|
element.addEventListener('volumechange', () =>
|
|
setState({ volume: element.volume }),
|
|
);
|
|
|
|
setState({ volume: element.volume });
|
|
};
|
|
|
|
setup();
|
|
|
|
return {
|
|
seek(seconds: number) {
|
|
element.currentTime = seconds;
|
|
currentTime = seconds;
|
|
|
|
pubsub.publish('change-current-time', currentTime);
|
|
},
|
|
|
|
getElement() {
|
|
return element;
|
|
},
|
|
|
|
getState() {
|
|
return state;
|
|
},
|
|
|
|
getCurrentTime() {
|
|
return currentTime;
|
|
},
|
|
|
|
play() {
|
|
element.play();
|
|
},
|
|
|
|
pause() {
|
|
element.pause();
|
|
},
|
|
|
|
volume(value: number) {
|
|
element.volume = value;
|
|
},
|
|
|
|
setUrl(url: string) {
|
|
element.setAttribute('src', url);
|
|
setState({ playing: false });
|
|
},
|
|
|
|
subscribe(listener: (newState: AudioState) => void) {
|
|
return pubsub.subscribe('change', listener);
|
|
},
|
|
|
|
onChangeCurrentTime(listener: (newCurrentTime: number) => void) {
|
|
return pubsub.subscribe('change-current-time', listener);
|
|
},
|
|
|
|
onEnded(listener: () => void) {
|
|
element.addEventListener('ended', listener);
|
|
|
|
return () => element.removeEventListener('ended', listener);
|
|
},
|
|
};
|
|
};
|