//AudioMgr.ts
import { Node, AudioSource, AudioClip, resources, director } from 'cc';
/**
 * @en
 * this is a sington class for audio play, can be easily called from anywhere in you project.
 * @zh
 * 这是一个用于播放音频的单件类，可以很方便地在项目的任何地方调用。
 */
export class AudioMgr {
    private static _inst: AudioMgr;
    public static get inst(): AudioMgr {
        if (this._inst == null) {
            this._inst = new AudioMgr();
        }
        return this._inst;
    }

    private _soundAudioSource: AudioSource;
    private _musicAudioSource: AudioSource;
    // private _soundaudioSource: AudioSource;
    constructor() {
        //@en create a node as audioMgr
        //@zh 创建一个节点作为 audioMgr
        let audioMgr = new Node();
        audioMgr.name = '__audioMgr__';

        //@en add to the scene.
        //@zh 添加节点到场景
        director.getScene().addChild(audioMgr);

        //@en make it as a persistent node, so it won't be destroied when scene change.
        //@zh 标记为常驻节点，这样场景切换的时候就不会被销毁了
        director.addPersistRootNode(audioMgr);

        //@en add AudioSource componrnt to play audios.
        //@zh 添加 AudioSource 组件，用于播放音频。
        this._soundAudioSource = audioMgr.addComponent(AudioSource);
        this._musicAudioSource = audioMgr.addComponent(AudioSource);
    }

    public get soundAudioSource() {
        return this._soundAudioSource;
    }

    public get musicAudioSource() {
        return this._musicAudioSource;
    }

    /**
     * @en
     * play short audio, such as strikes,explosions
     * @zh
     * 播放短音频,比如 打击音效，爆炸音效等
     * @param sound clip or url for the audio
     * @param volume 
     */
    playOneShot(sound: AudioClip | string, volume: number = 1.0) {
        if (sound instanceof AudioClip) {
            this._soundAudioSource.playOneShot(sound, (this.muteSound ? 0 : 1) * volume);
        }
        else {
            resources.load(sound, (err, clip: AudioClip) => {
                if (err) {
                    console.log(err);
                }
                else {
                    this._soundAudioSource.playOneShot(clip, (this.muteSound ? 0 : 1) * volume);
                }
            });
        }
    }

    /**
     * @en
     * play long audio, such as the bg music
     * @zh
     * 播放长音频，比如 背景音乐
     * @param sound clip or url for the sound
     * @param volume 
     */
    play(sound: AudioClip, isLoop: boolean = true, volume: number = 1.0) {
        if (sound instanceof AudioClip) {
            this.musicAudioSource.stop();
            this.musicAudioSource.clip = sound;
            this.musicAudioSource.loop = isLoop
            this.musicAudioSource.play();
            this.musicAudioSource.volume = (this.muteMusic ? 0 : 1) * volume;
        }
        else {
            resources.load(sound, (err, clip: AudioClip) => {
                if (err) {
                    console.log(err);
                }
                else {
                    this.musicAudioSource.clip = clip;
                    this.musicAudioSource.play();
                    this.musicAudioSource.volume = (this.muteMusic ? 0 : 1) * volume;
                }
            });
        }
    }

    muteMusic: boolean = false
    muteSound: boolean = false

    activeMusic(active: boolean) {
        this.musicAudioSource.volume = active ? 1 : 0
        this.muteMusic = !active
    }

    activeSound(active: boolean) {
        this.soundAudioSource.volume = active ? 1 : 0
        this.muteSound = !active
    }

    /**
     * stop the audio play
     */
    stop() {
        this._soundAudioSource.stop();
        this._musicAudioSource.stop();
    }

    /**
     * pause the audio play
     */
    pause() {
        this._soundAudioSource.pause();
        this._musicAudioSource.pause();
    }

    /**
     * resume the audio play
     */
    resume() {
        this._soundAudioSource.play();
        this._musicAudioSource.play();
    }
}