import React, { useState } from 'react'
import { Play, Pause, Music, Trash2, BarChart3, Clock, HardDrive, Hash } from 'lucide-react'
import { AudioFile, AudioService } from '../services/audioService'

interface AudioCardProps {
  audio: AudioFile
  onDelete: (audioId: string) => void
  onShowChart: (audio: AudioFile) => void
}

const AudioCard: React.FC<AudioCardProps> = ({
  audio,
  onDelete,
  onShowChart
}) => {
  const [isPlaying, setIsPlaying] = useState(false)
  const [audioElement, setAudioElement] = useState<HTMLAudioElement | null>(null)

  const handlePlayPause = () => {
    if (!audioElement) {
      // 创建音频元素
      const audio_el = new Audio(`file://${audio.file_path}`)
      audio_el.addEventListener('ended', () => setIsPlaying(false))
      audio_el.addEventListener('error', (e) => {
        console.error('Audio playback error:', e)
        setIsPlaying(false)
      })
      setAudioElement(audio_el)
      
      audio_el.play()
        .then(() => setIsPlaying(true))
        .catch(err => {
          console.error('Failed to play audio:', err)
          setIsPlaying(false)
        })
    } else {
      if (isPlaying) {
        audioElement.pause()
        setIsPlaying(false)
      } else {
        audioElement.play()
          .then(() => setIsPlaying(true))
          .catch(err => {
            console.error('Failed to play audio:', err)
            setIsPlaying(false)
          })
      }
    }
  }

  const handleDelete = () => {
    if (audioElement) {
      audioElement.pause()
      setAudioElement(null)
      setIsPlaying(false)
    }
    onDelete(audio.id)
  }

  return (
    <div className="bg-white rounded-lg shadow-sm border border-gray-200 overflow-hidden hover:shadow-md transition-shadow">
      {/* 音频信息头部 */}
      <div className="p-4 bg-gradient-to-r from-purple-500 to-pink-500 text-white">
        <div className="flex items-center justify-between">
          <div className="flex items-center space-x-3">
            <div className="p-2 bg-white/20 rounded-lg">
              <Music size={24} />
            </div>
            <div>
              <h3 className="font-medium truncate max-w-48" title={audio.filename}>
                {audio.filename}
              </h3>
              <p className="text-sm text-purple-100">
                {audio.format.toUpperCase()} • {AudioService.formatDuration(audio.duration)}
              </p>
            </div>
          </div>
          
          {/* 播放按钮 */}
          <button
            onClick={handlePlayPause}
            className="p-2 bg-white/20 rounded-lg hover:bg-white/30 transition-colors"
            title={isPlaying ? '暂停' : '播放'}
          >
            {isPlaying ? <Pause size={20} /> : <Play size={20} />}
          </button>
        </div>
      </div>

      {/* 音频详细信息 */}
      <div className="p-4 space-y-3">
        {/* 基本信息 */}
        <div className="grid grid-cols-2 gap-4 text-sm">
          <div className="flex items-center space-x-2">
            <Clock size={14} className="text-gray-400" />
            <span className="text-gray-600">时长:</span>
            <span className="font-medium">{AudioService.formatDuration(audio.duration)}</span>
          </div>
          <div className="flex items-center space-x-2">
            <HardDrive size={14} className="text-gray-400" />
            <span className="text-gray-600">大小:</span>
            <span className="font-medium">{AudioService.formatFileSize(audio.file_size)}</span>
          </div>
        </div>

        {/* 音频参数 */}
        <div className="grid grid-cols-2 gap-4 text-sm">
          <div>
            <span className="text-gray-600">采样率:</span>
            <span className="ml-2 font-medium">{audio.sample_rate} Hz</span>
          </div>
          <div>
            <span className="text-gray-600">声道:</span>
            <span className="ml-2 font-medium">{audio.channels}</span>
          </div>
        </div>

        {/* 节奏信息 */}
        {audio.tempo && (
          <div className="text-sm">
            <span className="text-gray-600">节拍:</span>
            <span className="ml-2 font-medium">{audio.tempo.toFixed(1)} BPM</span>
          </div>
        )}

        {/* 频谱特征 */}
        {audio.spectral_centroid && (
          <div className="text-sm space-y-1">
            <div>
              <span className="text-gray-600">频谱重心:</span>
              <span className="ml-2 font-medium">{audio.spectral_centroid.toFixed(0)} Hz</span>
            </div>
            {audio.zero_crossing_rate && (
              <div>
                <span className="text-gray-600">过零率:</span>
                <span className="ml-2 font-medium">{(audio.zero_crossing_rate * 100).toFixed(2)}%</span>
              </div>
            )}
          </div>
        )}

        {/* MD5哈希 */}
        <div className="text-xs text-gray-500 flex items-center space-x-1">
          <Hash size={12} />
          <span>MD5:</span>
          <code className="bg-gray-100 px-1 rounded font-mono">
            {audio.md5_hash.substring(0, 8)}...
          </code>
        </div>

        {/* 操作按钮 */}
        <div className="flex items-center justify-between pt-2 border-t border-gray-100">
          <div className="text-xs text-gray-400">
            {new Date(audio.created_at).toLocaleDateString()}
          </div>
          
          <div className="flex space-x-2">
            {/* 频率图按钮 */}
            {audio.frequency_chart_path && (
              <button
                onClick={() => onShowChart(audio)}
                className="p-2 text-gray-400 hover:text-blue-600 transition-colors"
                title="查看频率图"
              >
                <BarChart3 size={16} />
              </button>
            )}
            
            {/* 删除按钮 */}
            <button
              onClick={handleDelete}
              className="p-2 text-gray-400 hover:text-red-600 transition-colors"
              title="删除"
            >
              <Trash2 size={16} />
            </button>
          </div>
        </div>
      </div>
    </div>
  )
}

export default AudioCard