import { _decorator, Component, AudioClip, AudioSource, resources, Node, find, director } from 'cc';
import { BundleLoader } from '../Core/BundleLoader';
const { ccclass, property } = _decorator;

@ccclass('AudioManager')
export class AudioManager extends Component {
    @property({ type: AudioSource, tooltip: '背景音乐播放器' })
    public musicAudioSource: AudioSource = null;
    
    @property({ type: AudioSource, tooltip: 'UI音效播放器' })
    public uiSoundAudioSource: AudioSource = null;
    
    @property({ type: AudioSource, tooltip: '敌人音效播放器' })
    public enemySoundAudioSource: AudioSource = null;
    
    @property({ type: AudioSource, tooltip: '环境音效播放器' })
    public environmentSoundAudioSource: AudioSource = null;
    
    @property({ type: AudioSource, tooltip: '武器音效播放器' })
    public weaponSoundAudioSource: AudioSource = null;
    
    private musicVolume: number = 0.8;
    private uiSoundVolume: number = 0.8;
    private enemySoundVolume: number = 0.8;
    private environmentSoundVolume: number = 0.8;
    private weaponSoundVolume: number = 0.8;
    
    private soundEffectVolume: number = 0.8;
    
    private currentMusicClip: AudioClip = null;
    
    private bundleLoader: BundleLoader = null;
    
    private audioClipCache: Map<string, AudioClip> = new Map();

    // 并发播放保护
    private _musicRequestId: number = 0;
    private _currentMusicPath: string | null = null;

    // 单例实例
    private static _instance: AudioManager = null;
    
    onLoad() {
        // 设置单例（在 onLoad 阶段更早创建，确保静态调用可用）
        if (AudioManager._instance === null) {
            AudioManager._instance = this;
            // 如需跨场景保留，可取消注释以下两行
            // this.node.parent = null;
            // director.addPersistRootNode(this.node);
        } else {
            this.node.destroy();
            return;
        }
        
        this.bundleLoader = BundleLoader.getInstance();
        this.initializeAudioSources();
    }
    
    public static getInstance(): AudioManager {
        return AudioManager._instance;
    }
    
    private initializeAudioSources() {
        console.log('[AudioManager] 开始初始化音频源');
        
        if (!this.musicAudioSource) {
            console.log('[AudioManager] 创建音乐播放器AudioSource');
            const musicNode = new Node('MusicPlayer');
            this.node.addChild(musicNode);
            this.musicAudioSource = musicNode.addComponent(AudioSource);
            this.musicAudioSource.volume = this.musicVolume;
            console.log('[AudioManager] 音乐播放器AudioSource创建完成');
        } else {
            console.log('[AudioManager] 音乐播放器AudioSource已存在');
        }
        
        if (!this.uiSoundAudioSource) {
            console.log('[AudioManager] 创建UI音效播放器AudioSource');
            const uiSfxNode = new Node('UISoundPlayer');
            this.node.addChild(uiSfxNode);
            this.uiSoundAudioSource = uiSfxNode.addComponent(AudioSource);
            this.uiSoundAudioSource.volume = this.uiSoundVolume;
        }
        
        if (!this.enemySoundAudioSource) {
            const enemySfxNode = new Node('EnemySoundPlayer');
            this.node.addChild(enemySfxNode);
            this.enemySoundAudioSource = enemySfxNode.addComponent(AudioSource);
            this.enemySoundAudioSource.volume = this.enemySoundVolume;
        }
        
        if (!this.environmentSoundAudioSource) {
            const envSfxNode = new Node('EnvironmentSoundPlayer');
            this.node.addChild(envSfxNode);
            this.environmentSoundAudioSource = envSfxNode.addComponent(AudioSource);
            this.environmentSoundAudioSource.volume = this.environmentSoundVolume;
        }
        
        if (!this.weaponSoundAudioSource) {
            const weaponSfxNode = new Node('WeaponSoundPlayer');
            this.node.addChild(weaponSfxNode);
            this.weaponSoundAudioSource = weaponSfxNode.addComponent(AudioSource);
            this.weaponSoundAudioSource.volume = this.weaponSoundVolume;
        }
        
        console.log('[AudioManager] 音频源初始化完成');
        console.log(`[AudioManager] musicAudioSource: ${this.musicAudioSource ? '已创建' : '未创建'}`);
        
        // 设置初始音量
        this.updateAllVolumes();
    }
    
    public async playMusic(musicPath: string, loop: boolean = true) {
        if (!this.musicAudioSource) {
            console.warn('[AudioManager] 音乐播放器未初始化');
            return;
        }

        // 避免重复请求同一首已在播放的音乐
        if (this._currentMusicPath === musicPath && this.musicAudioSource.playing) {
            this.musicAudioSource.loop = loop;
            console.log(`[AudioManager] 已在播放目标音乐，忽略重复请求: ${musicPath}`);
            return;
        }

        const requestId = ++this._musicRequestId; // 为本次播放分配请求ID
        console.log(`[AudioManager] 发起音乐播放请求#${requestId}: ${musicPath}`);
        
        try {
            const bundlePath = musicPath.replace('data/', '').replace(/\.(mp3|wav|ogg)$/i, '');
            const clip = await this.bundleLoader.loadAssetFromBundle<AudioClip>('data', bundlePath, AudioClip);

            // 若在加载期间有新的播放请求，丢弃本次播放
            if (requestId !== this._musicRequestId) {
                console.log(`[AudioManager] 丢弃过期音乐请求#${requestId}: ${musicPath}（当前请求ID为#${this._musicRequestId}）`);
                return;
            }
            
            // 保险：在开始新音乐前停止当前播放，避免叠加
            if (this.musicAudioSource.playing) {
                this.musicAudioSource.stop();
            }
            
            this.currentMusicClip = clip;
            this._currentMusicPath = musicPath;
            this.musicAudioSource.clip = clip;
            this.musicAudioSource.loop = loop;
            this.musicAudioSource.play();
            
            console.log(`[AudioManager] 播放音乐#${requestId}: ${musicPath}`);
        } catch (error) {
            console.error(`[AudioManager] 加载音乐失败: ${musicPath}`, error);
        }
    }
    
    public stopMusic() {
        console.log('[AudioManager] stopMusic方法被调用');
        console.log(`[AudioManager] musicAudioSource状态: ${this.musicAudioSource ? '存在' : '不存在'}`);
        
        // 取消所有正在进行的音乐加载/播放请求
        this._musicRequestId++;
        console.log(`[AudioManager] 取消到请求ID#${this._musicRequestId}（后续仅处理更新后的请求）`);
        
        if (this.musicAudioSource) {
            console.log(`[AudioManager] musicAudioSource.playing: ${this.musicAudioSource.playing}`);
            console.log(`[AudioManager] currentMusicClip: ${this.currentMusicClip ? this.currentMusicClip.name : '无'}`);
            
            if (this.musicAudioSource.playing) {
                this.musicAudioSource.stop();
                console.log('[AudioManager] 停止音乐播放');
            } else {
                console.log('[AudioManager] 音乐未在播放，无需停止');
            }
            this.currentMusicClip = null;
            this._currentMusicPath = null;
            this.musicAudioSource.clip = null;
            console.log('[AudioManager] 已清除音乐剪辑引用');
        } else {
            console.warn('[AudioManager] 音乐播放器未初始化，无法停止音乐');
        }
    }
    
    public pauseMusic() {
        if (this.musicAudioSource && this.musicAudioSource.playing) {
            this.musicAudioSource.pause();
            console.log('[AudioManager] 暂停音乐播放');
        }
    }
    
    public resumeMusic() {
        if (this.musicAudioSource && this.currentMusicClip && !this.musicAudioSource.playing) {
            this.musicAudioSource.play();
            console.log('[AudioManager] 恢复音乐播放');
        }
    }
    
    public playSoundEffect(sfxPath: string, volume?: number) {
        this.playSound(this.uiSoundAudioSource, sfxPath, volume, this.soundEffectVolume, '音效');
    }
    
    public playUISound(sfxPath: string, volume?: number) {
        this.playSound(this.uiSoundAudioSource, sfxPath, volume, this.uiSoundVolume, 'UI音效');
    }
    
    public playEnemySound(sfxPath: string, volume?: number) {
        this.playSound(this.enemySoundAudioSource, sfxPath, volume, this.enemySoundVolume, '敌人音效');
    }
    
    public playEnvironmentSound(sfxPath: string, volume?: number) {
        this.playSound(this.environmentSoundAudioSource, sfxPath, volume, this.environmentSoundVolume, '环境音效');
    }
    
    public playWeaponSound(sfxPath: string, volume?: number) {
        this.playSound(this.weaponSoundAudioSource, sfxPath, volume, this.weaponSoundVolume, '武器音效');
    }
    
    private async playSound(audioSource: AudioSource, sfxPath: string, volume: number | undefined, baseVolume: number, soundType: string) {
        if (!audioSource) {
            console.warn(`[AudioManager] ${soundType}播放器未初始化`);
            return;
        }
        
        try {
            const cleanPath = sfxPath.replace('data/', '').replace(/\.(mp3|wav|ogg)$/i, '');
            const bundlePath = cleanPath;
            const clip = await this.bundleLoader.loadAssetFromBundle<AudioClip>('data', bundlePath, AudioClip);
            
            if (volume !== undefined) {
                audioSource.volume = Math.max(0, Math.min(1, volume));
            } else {
                audioSource.volume = baseVolume;
            }
            
            audioSource.playOneShot(clip);
            console.log(`[AudioManager] 播放${soundType}: ${cleanPath}`);
        } catch (error) {
            console.error(`[AudioManager] 加载${soundType}失败: ${sfxPath}`, error);
        }
    }
    
    public setMusicVolume(volume: number) {
        this.musicVolume = Math.max(0, Math.min(1, volume));
        this.updateMusicVolume();
        //console.log(`[AudioManager] 设置音乐音量: ${this.musicVolume}`);
    }
    
    public setSoundEffectVolume(volume: number) {
        this.soundEffectVolume = Math.max(0, Math.min(1, volume));
        //console.log(`[AudioManager] 设置音效音量: ${this.soundEffectVolume}`);
    }
    
    public setUISoundVolume(volume: number) {
        this.uiSoundVolume = Math.max(0, Math.min(1, volume));
        this.updateUISoundVolume();
    }
    
    public setEnemySoundVolume(volume: number) {
        this.enemySoundVolume = Math.max(0, Math.min(1, volume));
        this.updateEnemySoundVolume();
    }
    
    public setEnvironmentSoundVolume(volume: number) {
        this.environmentSoundVolume = Math.max(0, Math.min(1, volume));
        this.updateEnvironmentSoundVolume();
    }
    
    public setWeaponSoundVolume(volume: number) {
        this.weaponSoundVolume = Math.max(0, Math.min(1, volume));
        this.updateWeaponSoundVolume();
    }
    
    public setAllSoundVolume(volume: number) {
        this.setSoundEffectVolume(volume);
        this.setUISoundVolume(volume);
        this.setEnemySoundVolume(volume);
        this.setEnvironmentSoundVolume(volume);
        this.setWeaponSoundVolume(volume);
    }
    
    public getMusicVolume(): number {
        return this.musicVolume;
    }
    
    public getSoundEffectVolume(): number {
        return this.soundEffectVolume;
    }
    
    public getUISoundVolume(): number {
        return this.uiSoundVolume;
    }
    
    public getEnemySoundVolume(): number {
        return this.enemySoundVolume;
    }
    
    public getEnvironmentSoundVolume(): number {
        return this.environmentSoundVolume;
    }
    
    public getWeaponSoundVolume(): number {
        return this.weaponSoundVolume;
    }
    
    private updateMusicVolume() {
        if (this.musicAudioSource) {
            this.musicAudioSource.volume = this.musicVolume;
        }
    }
    
    private updateUISoundVolume() {
        if (this.uiSoundAudioSource) {
            this.uiSoundAudioSource.volume = this.uiSoundVolume;
        }
    }
    
    private updateEnemySoundVolume() {
        if (this.enemySoundAudioSource) {
            this.enemySoundAudioSource.volume = this.enemySoundVolume;
        }
    }
    
    private updateEnvironmentSoundVolume() {
        if (this.environmentSoundAudioSource) {
            this.environmentSoundAudioSource.volume = this.environmentSoundVolume;
        }
    }
    
    private updateWeaponSoundVolume() {
        if (this.weaponSoundAudioSource) {
            this.weaponSoundAudioSource.volume = this.weaponSoundVolume;
        }
    }
    
    private updateAllVolumes() {
        this.updateMusicVolume();
        this.updateUISoundVolume();
        this.updateEnemySoundVolume();
        this.updateEnvironmentSoundVolume();
        this.updateWeaponSoundVolume();
    }
    
    public muteAll() {
        this.setMusicVolume(0);
        this.setAllSoundVolume(0);
    }
    
    public unmuteAll() {
        this.setMusicVolume(0.8);
        this.setAllSoundVolume(0.8);
    }
    
    public muteAllSounds() {
        this.setAllSoundVolume(0);
    }
    
    public unmuteAllSounds() {
        this.setAllSoundVolume(0.8);
    }
    
    public isMusicPlaying(): boolean {
        return !!(this.musicAudioSource && this.musicAudioSource.playing);
    }
    
    public clearAudioCache() {
        console.log(`[AudioManager] 清理音频缓存，共${this.audioClipCache.size}个音效`);
        this.audioClipCache.clear();
    }
    
    public getCacheInfo(): {count: number, paths: string[]} {
        return { count: this.audioClipCache.size, paths: Array.from(this.audioClipCache.keys()) };
    }

    onDestroy() {
        this.clearAudioCache();
        if (AudioManager._instance === this) {
            AudioManager._instance = null;
        }
    }
}

export class Audio {
    static playMusic(musicPath: string, loop: boolean = true) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.playMusic(musicPath, loop);
        }
    }
    
    static playSFX(sfxPath: string, volume?: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.playSoundEffect(sfxPath, volume);
        }
    }
    
    static playUISound(sfxPath: string, volume?: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.playUISound(sfxPath, volume);
        }
    }
    
    static playEnemySound(sfxPath: string, volume?: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.playEnemySound(sfxPath, volume);
        }
    }
    
    static playEnvironmentSound(sfxPath: string, volume?: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.playEnvironmentSound(sfxPath, volume);
        }
    }
    
    static playWeaponSound(sfxPath: string, volume?: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.playWeaponSound(sfxPath, volume);
        }
    }
    
    static setMusicVolume(volume: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.setMusicVolume(volume);
        }
    }
    
    static setSFXVolume(volume: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.setSoundEffectVolume(volume);
        }
    }
    
    static setUISoundVolume(volume: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.setUISoundVolume(volume);
        }
    }
    
    static setEnemySoundVolume(volume: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.setEnemySoundVolume(volume);
        }
    }
    
    static setEnvironmentSoundVolume(volume: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.setEnvironmentSoundVolume(volume);
        }
    }
    
    static setWeaponSoundVolume(volume: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.setWeaponSoundVolume(volume);
        }
    }
    
    static setAllSoundVolume(volume: number) {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.setAllSoundVolume(volume);
        }
    }
    
    static stopMusic() {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.stopMusic();
        }
    }
    
    static pauseMusic() {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.pauseMusic();
        }
    }
    
    static resumeMusic() {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.resumeMusic();
        }
    }
    
    static muteAll() {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.muteAll();
        }
    }
    
    static unmuteAll() {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.unmuteAll();
        }
    }
    
    static muteAllSounds() {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.muteAllSounds();
        }
    }
    
    static unmuteAllSounds() {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.unmuteAllSounds();
        }
    }
    
    static clearAudioCache() {
        const manager = AudioManager.getInstance();
        if (manager) {
            manager.clearAudioCache();
        }
    }
    
    static getCacheInfo(): {count: number, paths: string[]} {
        const manager = AudioManager.getInstance();
        if (manager) {
            return manager.getCacheInfo();
        }
        return { count: 0, paths: [] };
    }

    static ensureManager(): AudioManager | null {
        let manager = AudioManager.getInstance();
        if (manager) return manager;
        try {
            const canvas = find('Canvas') as Node | null;
            const sceneRoot: any = director.getScene();
            const parent: Node | null = canvas || (sceneRoot as Node | null);
            if (!parent) {
                console.warn('[Audio] 场景未准备好，无法创建AudioManager');
                return null;
            }

            // 先尝试在场景中查找已存在的 AudioManager 组件
            if (canvas && typeof (canvas as any).getComponentInChildren === 'function') {
                const existing = (canvas as any).getComponentInChildren(AudioManager);
                if (existing) {
                    return existing;
                }
            }
            if (sceneRoot && typeof sceneRoot.getComponentInChildren === 'function') {
                const existingInScene = sceneRoot.getComponentInChildren(AudioManager);
                if (existingInScene) {
                    return existingInScene;
                }
            }

            // 查找名为 AudioManager 的节点，复用其组件
            let node = parent.getChildByName && parent.getChildByName('AudioManager');
            if (!node) {
                node = new Node('AudioManager');
                parent.addChild(node as Node);
            }
            const reused = (node as Node).getComponent(AudioManager);
            manager = reused ? reused : (node as Node).addComponent(AudioManager);
            return manager;
        } catch (e) {
            console.error('[Audio] 创建AudioManager失败:', e);
            return null;
        }
    }

    static updateBGMByTopUI(): void {
        try {
            const manager = Audio.ensureManager();
            if (!manager) {
                console.warn('[Audio] AudioManager未初始化，稍后重试BGM切换');
                return;
            }

            const mainUI = find('Canvas/MainUI');
            const gameUI = find('Canvas/GameLevelUI');
            const isMainVisible = !!(mainUI && (mainUI as Node).activeInHierarchy);
            const isGameVisible = !!(gameUI && (gameUI as Node).activeInHierarchy);

            let playTarget: 'main' | 'game' | null = null;
            if (isMainVisible && !isGameVisible) {
                playTarget = 'main';
            } else if (!isMainVisible && isGameVisible) {
                playTarget = 'game';
            } else if (isMainVisible && isGameVisible) {
                const mainIndex = (mainUI as Node).getSiblingIndex();
                const gameIndex = (gameUI as Node).getSiblingIndex();
                playTarget = gameIndex >= mainIndex ? 'game' : 'main';
            } else {
                Audio.stopMusic();
                return;
            }

            Audio.stopMusic();
            Audio.setMusicVolume(0.8);
            if (playTarget === 'game') {
                Audio.playMusic('data/弹球音效/fight bgm', true);
                console.log('[Audio] 切换到游戏战斗音乐');
            } else {
                Audio.playMusic('data/弹球音效/ui bgm', true);
                console.log('[Audio] 切换到主界面背景音乐');
            }
        } catch (err) {
            console.error('[Audio] updateBGMByTopUI 失败:', err);
        }
    }
}