import { HowlAudioSource } from "./HowlAudioSource";

export class HowlAudioController extends EventTarget {
	readonly source: HowlAudioSource;

	autoPlay: boolean;

	isPlay: boolean;

	volume: number;

	constructor(source: HowlAudioSource) {
		super();
		this.source = source;
		this.autoPlay = false;
		this.isPlay = false;
		this.source.onEnded = () => {
			this._end();
		};
		this.source.onError = (e) => {
			if (typeof e === "string") {
				this._handleError(new Error(e));
			} else {
				this._handleError(e instanceof Error ? e : e.error);
			}
		};
		this.volume = 1;
	}

	_end() {
		this.isPlay = false;
		this.dispatchEvent(new Event("ended"));
		this.source.reset();
	}

	_handleError(error: Error) {
		this.isPlay = false;
		this.dispatchEvent(new ErrorEvent("error", error));
	}

	play() {
		// 必要なら入れる
		// if (this.isPlay) return;
		this.isPlay = true;
		/*
		if (isIOSorMacintoshTouchDevice()) {
			if (this.source.readyState !== "ready") {
				this.isPlay = false;
				this._handleError(new Error("not ready"));
				return;
			}
		}
		*/
		this.source.audio.volume(this.volume);
		this.source.audio.stop();
		this.source.audio.play();
	}

	changeVolume(volume: number) {
		this.volume = volume;
		if (this.source != null) {
			this.source.audio.volume(this.volume);
		}
	}

	changeDevice(id: string) {
		// unsupport
		/*
		const sinkable = this.source.audio as any as {
			setSinkId?: (id: string) => void;
		};
		if (sinkable.setSinkId != null) {
			sinkable.setSinkId(id);
		}
		*/
	}

	destroy() {
		if (this.isPlay) {
			this.source.reset();
		}
	}
}