import { assetManager, AudioClip, AudioSource, director, Node } from "cc";
const ch_log = chsdk.log;
const ch_storage = chsdk.storage;
/**音频等资源加载方式*/
export enum loadType {
    /**未知*/
    none = 0,
    /**bundle*/
    bundle = 1,
    /**远程*/
    remote = 2,
}
/**音频播放控制
 * 需要初始化资源加载方式
 * loadType.bundle 时需要设置 bundle名
 * loadType.remote 测试使用远程的音频需要设置远程地址
*/
export default class ch_audio {
    private static _instance: ch_audio;
    public static getInstance(): ch_audio {
        if (!this._instance) this._instance = new ch_audio();
        return this._instance;
    }
    private _volume_music: number = 1;
    private _volume_effect: number = 1;
    private _switch_music: boolean = true;
    private _switch_effect: boolean = true;
    private readonly _effect_max: number = 5;
    private _effect_index: number = 0;
    private _effect_source_pool: AudioSource[] = [];
    private _music_source: AudioSource;
    private _load_type: loadType = loadType.none;
    private _bundle_name: string;
    private _remote_url: string;
    private _playing_sound: Set<string> = new Set();
    constructor() {
        const audio = new Node();
        audio.name = '__ch_audio__';
        director.getScene().addChild(audio);
        director.addPersistRootNode(audio);
        this._music_source = this._create(audio);
        for (let i = 0; i < this._effect_max; i++) {
            this._effect_source_pool.push(this._create(audio));
        }
        this.load();
    }
    /**
     * 创建音频源
     * @param node 节点
     * @param volume 音量
     * @returns AudioSource 音频源组件
     */
    private _create(node: Node): AudioSource {
        const source = node.addComponent(AudioSource);
        source.loop = false;
        source.playOnAwake = false;
        source.volume = 0.5;
        return source;
    }
    /**初始化*/
    init(load_type: loadType, bundle_name: string, remote_url: string): void {
        this._load_type = load_type;
        this._bundle_name = bundle_name;
        this._remote_url = remote_url;
    }
    /**切换bundle*/
    set_bundle_name(bundle_name: string): void {
        this._bundle_name = bundle_name;
    }
    /**
     * 释放通过 [[load]] 或者 [[loadDir]] 加载的声音资源。
     * @param sound 声音资源路径
     */
    release(sound?: string): void {
        if (this._load_type == loadType.none) {
            ch_log.warn('音频模块未初始化');
        } else if (this._load_type == loadType.bundle) {
            const bundle = assetManager.getBundle(this._bundle_name);
            if (!sound) {
                bundle.releaseAll();
            } else {
                bundle.release(sound, AudioClip);
            }
        }
    }
    /** 保存音乐音效的音量、开关配置数据到本地 */
    save() {
        const local_data: any = {};
        local_data.volume_music = this._volume_music;
        local_data.volume_effect = this._volume_effect;
        local_data.switch_music = this._switch_music;
        local_data.switch_effect = this._switch_effect;
        ch_storage.set("ch_audio", local_data);
    }
    /** 本地加载音乐音效的音量、开关配置数据并设置到游戏中 */
    load() {
        const local_data = ch_storage.getObject("ch_audio");
        if (local_data) {
            try {
                this.setState(local_data);
            }
            catch (e) {
                this.setStateDefault();
            }
        }
        else {
            this.setStateDefault();
        }
    }
    private setState(local_data: { volume_music: number, volume_effect: number, switch_music: boolean, switch_effect: boolean }) {
        this.volumeMusic = local_data.volume_music;
        this.volumeEffect = local_data.volume_effect;
        this.switchMusic = local_data.switch_music;
        this.switchEffect = local_data.switch_effect;
    }
    private setStateDefault() {
        this.volumeMusic = 0.8;
        this.volumeEffect = 0.8;
        this.switchMusic = true;
        this.switchEffect = true;
    }
    /**
     * 获取背景音乐音量
     */
    get volumeMusic(): number {
        return this._volume_music;
    }
    /** 
     * 设置背景音乐音量
     * @param value     音乐音量值
     */
    set volumeMusic(value: number) {
        this._volume_music = value;
        this._music_source.volume = value;
    }
    /** 
     * 获取背景音乐开关值 
     */
    get switchMusic(): boolean {
        return this._switch_music;
    }
    /** 
     * 设置背景音乐开关值
     * @param value     开关值
     */
    set switchMusic(value: boolean) {
        this._switch_music = value;
        if (value == false) this._music_source.stop();
    }
    /** 
     * 获取音效音量 
     */
    get volumeEffect(): number {
        return this._volume_effect;
    }
    /**
     * 设置获取音效音量
     * @param value     音效音量值
     */
    set volumeEffect(value: number) {
        this._volume_effect = value;
        for (let i = 0; i < this._effect_source_pool.length; i++) {
            this._effect_source_pool[i].volume = this._volume_effect;
        }
    }

    /** 
     * 获取音效开关值 
     */
    get switchEffect(): boolean {
        return this._switch_effect;
    }
    /**
     * 设置音效开关值
     * @param value     音效开关值
     */
    set switchEffect(value: boolean) {
        this._switch_effect = value;
        if (value == false) {
            for (let i = 0; i < this._effect_source_pool.length; i++) {
                this._effect_source_pool[i].stop();
            }
        }
    }
    /**
     * @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 interval 同名字音频限制播放间隔(毫秒)   (默认：0不限制  特殊系数：>0 <=1 使用音频时间X此系数)
     */
    playOneShot(sound: AudioClip | string, interval: number = 0, remote_ext: string = '.mp3') {
        if (!this._switch_effect) return;
        if (sound instanceof AudioClip) {
            this.doPlayOneShot(sound, interval);
        }
        else {
            if (this._load_type == loadType.none) {
                ch_log.warn('音频模块未初始化');
            } else if (this._load_type == loadType.bundle) {
                const bundle = assetManager.getBundle(this._bundle_name);
                if (!bundle) {
                    ch_log.warn(`请确保 bundle${this._bundle_name} 已加载`);
                } else {
                    bundle.load(sound, (err, clip: AudioClip) => {
                        if (err) {
                            ch_log.error(err);
                        }
                        else {
                            this.doPlayOneShot(clip, interval);
                        }
                    });
                }
            } else if (this._load_type == loadType.remote) {
                assetManager.loadRemote(this._remote_url + sound + remote_ext, (err: Error | null, clip: AudioClip) => {
                    if (err) {
                        ch_log.error(err);
                    }
                    else {
                        this.doPlayOneShot(clip, interval);
                    }
                });
            }
        }
    }
    private doPlayOneShot(clip: AudioClip, interval: number): void {
        const name: string = clip.name;
        if (interval > 0) {
            if (this._playing_sound.has(name)) return;
            this._playing_sound.add(name);
            const time = interval <= 1 ? clip.getDuration() * interval * 1000 : interval;
            setTimeout(() => { this._playing_sound.delete(name); }, time);
            this.getNextEffectSource().playOneShot(clip, this._volume_effect);
        } else {
            this.getNextEffectSource().playOneShot(clip, this._volume_effect);
        }
    }
    private getNextEffectSource(): AudioSource {
        const source = this._effect_source_pool[this._effect_index];
        this._effect_index = (this._effect_index + 1) % this._effect_max;
        return source;
    }
    /**
     * @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
     */
    play(sound: AudioClip | string, remote_ext: string = '.mp3') {
        if (!this._switch_music) return;
        if (sound instanceof AudioClip) {
            this._music_source.loop = true;
            this._music_source.stop();
            this._music_source.clip = sound;
            this._music_source.play();
            this._music_source.volume = this._volume_music;
        }
        else {
            if (this._load_type == loadType.none) {
                ch_log.warn('音频模块未初始化');
            } else if (this._load_type == loadType.bundle) {
                const bundle = assetManager.getBundle(this._bundle_name);
                if (!bundle) {
                    ch_log.warn(`请确保 bundle${this._bundle_name} 已加载`);
                } else {
                    bundle.load(sound, (err, clip: AudioClip) => {
                        if (err) {
                            ch_log.error(err);
                        }
                        else {
                            this._music_source.loop = true;
                            this._music_source.stop();
                            this._music_source.clip = clip;
                            this._music_source.play();
                            this._music_source.volume = this._volume_music;
                        }
                    });
                }
            } else if (this._load_type == loadType.remote) {
                assetManager.loadRemote(this._remote_url + sound + remote_ext, (err: Error | null, clip: AudioClip) => {
                    if (err) {
                        ch_log.error(err);
                    }
                    else {
                        this._music_source.loop = true;
                        this._music_source.stop();
                        this._music_source.clip = clip;
                        this._music_source.play();
                        this._music_source.volume = this._volume_music;
                    }
                });
            }
        }
    }

    /**
     * stop the audio play
     */
    stop() {
        this._music_source.stop();
        for (let i = 0; i < this._effect_source_pool.length; i++) {
            this._effect_source_pool[i].stop();

        }
    }
    /**stop and clean */
    clean() {
        this._music_source.stop();
        this._music_source.clip?.name
        this._music_source.clip = null;
        for (let i = 0; i < this._effect_source_pool.length; i++) {
            this._effect_source_pool[i].stop();
            this._effect_source_pool[i].clip = null;
        }
    }
    /**
     * pause the audio play
     */
    pause() {
        this._music_source.pause();
    }

    /**
     * resume the audio play
     */
    resume() {
        if (!this._switch_music) return;
        this._music_source.play();
    }

    /** 重播当前音乐 */
    public replay_music(): void {
        this._music_source.stop();
        this._music_source.play();
    }
}