// 音乐播放器功能
class MusicPlayer {
    constructor() {
        this.currentSongIndex = 0;
        this.songs = [];
        this.isPlaying = false;
        this.audio = new Audio();
        
        this.init();
    }

    init() {
        this.bindEvents();
        this.bindAudioEvents();
        this.loadSongs();
    }

    bindAudioEvents() {
        this.audio.addEventListener('loadeddata', () => {
            if (this.isPlaying) {
                this.audio.play();
            }
        });
    }

    bindEvents() {
        document.getElementById('playPauseBtn').addEventListener('click', () => this.togglePlayPause());
        document.getElementById('prevBtn').addEventListener('click', () => this.playPrevious());
        document.getElementById('nextBtn').addEventListener('click', () => this.playNext());
    }

    async loadSongs() {
        try {
            // 使用新的音乐API
            const response = await fetch('https://www.cunyuapi.top/rwyymusic');
            const data = await response.json();
            
            this.songs = [data];
            this.loadSong(0);
        } catch (error) {
            console.error('加载歌曲失败:', error);
            document.getElementById('musicTitle').textContent = '加载失败';
        }
    }

    async loadSong(index) {
        this.currentSongIndex = index;
        const song = this.songs[index];
        
        document.getElementById('musicTitle').textContent = song.name;
        document.getElementById('musicArtist').textContent = song.artists;
        
        // 设置音频源
        this.audio.src = song.song_url;
    }

    togglePlayPause() {
        if (this.isPlaying) {
            this.audio.pause();
            document.getElementById('playPauseBtn').innerHTML = '<img src="icon/play.png" alt="播放" width="18" height="18">';
        } else {
            this.audio.play();
            document.getElementById('playPauseBtn').innerHTML = '<img src="icon/pause.png" alt="暂停" width="18" height="18">';
        }
        this.isPlaying = !this.isPlaying;
    }

    playPrevious() {
        if (this.currentSongIndex > 0) {
            this.loadSong(this.currentSongIndex - 1);
            this.isPlaying = true;
            document.getElementById('playPauseBtn').innerHTML = '<img src="icon/pause.png" alt="暂停" width="18" height="18">';
        }
    }

    playNext() {
        if (this.currentSongIndex < this.songs.length - 1) {
            this.loadSong(this.currentSongIndex + 1);
            this.isPlaying = true;
            document.getElementById('playPauseBtn').innerHTML = '<img src="icon/pause.png" alt="暂停" width="18" height="18">';
        } else {
            this.loadSongs();
            this.isPlaying = true;
            document.getElementById('playPauseBtn').innerHTML = '<img src="icon/pause.png" alt="暂停" width="18" height="18">';
        }
    }
}

// 页面加载完成后初始化音乐播放器
window.addEventListener('DOMContentLoaded', () =>{
    new MusicPlayer();
});