//AudioMgr.ts
import { Node, AudioClip, director } from 'cc';
import { AudioBgMusic } from './audio/AudioBgMusic';
import { AudioEffect } from './audio/AudioEffect';
import { ModuleDef } from '../../scripts/ModuleDef';
/**
 * @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 bgMusic!: AudioBgMusic;

    private effect!: AudioEffect;

    // private _audioSource: AudioSource;
    private _musicVolume = 1.0;
    private _musicVolumeScale = 1.0;
    // private _soundVolume = 1.0;
    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._audioSource = audioMgr.addComponent(AudioSource);
        var bg_music = new Node("UIBgMusic");
        bg_music.parent = audioMgr;
        this.bgMusic = bg_music.addComponent(AudioBgMusic);

        var effect = new Node("UIEffect");
        effect.parent = audioMgr;
        this.effect = effect.addComponent(AudioEffect);
    }

    // public get audioSource() {
    //     return this._audioSource;
    // }

    public set musicVolume(v: number) {
        this._musicVolume = v;
        this.bgMusic.volume = this._musicVolume * this._musicVolumeScale;
        // this._audioSource.volume = this._musicVolume * this._musicVolumeScale;
    }

    public set soundVolume(v: number) {
        // this._soundVolume = v;
        this.effect.volume = v;
    }

    /**
     * @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, bundleName: string = 'resources') {
        if (sound instanceof AudioClip) {
            // this._audioSource.volume = 1.0;
            // this._audioSource.playOneShot(sound, volume * this._soundVolume);
            this.effect.playerEffect(sound, this.effect.volume);
        }
        else {
            // this.effect.volume = volume;
            this.effect.load(sound,bundleName);
        }
    }

    /**
     * @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
     * @param bundleName
     */
    play(sound: AudioClip | string, volume: number = 1.0, bundleName: string = 'resources') {
        this._musicVolumeScale = volume;
        try {
            if (sound instanceof AudioClip) {
                this.bgMusic.playMusic(sound,null);
            } else {
                this.bgMusic.load(sound,null,bundleName);
            }
        } catch (error) {
            console.error('An error occurred while playing the audio:', error);
        }
    }

    /**
     * 播放通用按钮声音
     */
    public playCommonBtn(res ?: string){
        this.playOneShot(res || 'res/audio/camera',1.0,ModuleDef.BASIC);
    }
    
    /**
     * stop the audio play
     */
    stop() {
        // this._audioSource.stop();
        this.effect.stop();
        this.bgMusic.stop();
    }

    /**
     * pause the audio play
     */
    pause() {
        // this._audioSource.pause();
        this.effect.pause();
        this.bgMusic.pause();
    }

    /**
     * resume the audio play
     */
    resume() {
        // this._audioSource.play();
        this.effect.play();
        this.bgMusic.play();
    }
}