'use client'

import React, { useRef, useEffect, useState } from 'react'
import Image from 'next/image'
import { format } from 'date-fns'
import AudioVisualizer from '../AudioVisualizer'

// 素材类型定义
export interface Material {
  id: string
  productModel: string
  categoryName: string
  sceneName: string
  materialType: string
  renderer?: string
  authorName: string
  previewUrl: string
  zipFileName: string
  zipFileSize: string | number
  downloadCount: number
  likeCount: number
  isLiked: boolean
  isFavorited: boolean
  userId: string
  createdAt: string
  // 视频相关
  videoSourceUrl?: string
  videoPreviewClipUrl?: string
  videoPreview540Url?: string
  videoCoverUrl?: string
  videoDuration?: number
  videoProcessingStatus?: string
  transcodeProgress?: number
  transcodeStage?: string
  transcodeAttempts?: number
  transcodeLastError?: string
  transcodeQueueWaitingIndex?: number
  transcodeQueueWaitingTotal?: number
  transcodeQueueProcessingIds?: string[]
  transcodeQueueMaxConcurrent?: number
}

// 用户会话类型
interface UserSession {
  id: string
  role: string
}

interface MaterialCardProps {
  material: Material
  session: { user: UserSession } | null
  // 音频播放状态
  playingAudioId: string | null
  audioElement: HTMLAudioElement | null
  audioProgress: number
  audioCurrentTime: number
  audioDuration: number
  audioRef: React.RefObject<HTMLAudioElement | null>
  // 下载状态
  downloadingId: string | null
  downloadProgress: number
  // 主题色
  themeColor: string
  // 事件处理
  onAudioPlay: (materialId: string, audioUrl: string) => void
  onDownload: (id: string) => void
  onLike: (id: string) => void
  onFavorite: (id: string) => void
  onShare: (id: string) => void
  onEdit: (material: Material) => void
  onDelete: (id: string) => void
  onClick: (material: Material) => void
  onRetryTranscode: (materialId: string) => void
  showToast: (message: string, options?: { variant?: 'success' | 'error' }) => void
}

// 根据素材类型获取角标背景颜色
const getMaterialTypeBadgeColor = (materialType: string): string => {
  const isVideoType = materialType === '主图视频' || materialType === '安装视频' || materialType === '种草视频'
  
  if (materialType === '3D场景' || materialType === '3DMAX') {
    return 'bg-red-500'
  } else if (isVideoType) {
    return 'bg-blue-600'
  } else if (materialType === '音乐') {
    return 'bg-purple-600'
  } else if (materialType === 'C4D模型') {
    return 'bg-blue-500'
  } else if (materialType === '详情模板' || materialType === '矢量文件') {
    return 'bg-amber-500'
  } else {
    return 'bg-gray-700'
  }
}

// 格式化文件大小
const formatFileSize = (bytes: string | number): string => {
  const size = typeof bytes === 'string' ? parseInt(bytes) : bytes
  if (size === 0) return '未知'
  const units = ['B', 'KB', 'MB', 'GB']
  const i = Math.floor(Math.log(size) / Math.log(1024))
  return `${(size / Math.pow(1024, i)).toFixed(2)} ${units[i]}`
}

export default function MaterialCard({
  material,
  session,
  playingAudioId,
  audioElement,
  audioProgress,
  audioCurrentTime,
  audioDuration,
  audioRef,
  downloadingId,
  downloadProgress,
  themeColor,
  onAudioPlay,
  onDownload,
  onLike,
  onFavorite,
  onShare,
  onEdit,
  onDelete,
  onClick,
  onRetryTranscode,
  showToast,
}: MaterialCardProps) {
  const videoRef = useRef<HTMLVideoElement>(null)
  const [posterLoadError, setPosterLoadError] = useState(false)
  
  // 判断素材类型
  const isVideoType = material.materialType === '主图视频' || material.materialType === '安装视频' || material.materialType === '种草视频'
  const isAudioMaterial = material.materialType === '音乐'
  
  // 视频预览URL
  const videoPreviewUrl = material.videoPreviewClipUrl || material.videoPreview540Url
  const posterUrl = material.videoCoverUrl || material.previewUrl
  
  // 检测封面图是否可加载
  useEffect(() => {
    if (isVideoType && posterUrl && typeof window !== 'undefined') {
      setPosterLoadError(false)
      const img = document.createElement('img')
      img.onload = () => {
        setPosterLoadError(false)
      }
      img.onerror = () => {
        console.error('[MaterialCard] 视频封面图预加载失败:', {
          materialId: material.id,
          productModel: material.productModel,
          videoCoverUrl: material.videoCoverUrl,
          previewUrl: material.previewUrl,
          posterUrl: posterUrl,
          timestamp: new Date().toISOString()
        })
        setPosterLoadError(true)
      }
      img.src = posterUrl
    } else {
      setPosterLoadError(false)
    }
  }, [isVideoType, posterUrl, material.id, material.productModel, material.videoCoverUrl, material.previewUrl])
  
  // 音频URL（API已经处理过，直接使用）
  let audioUrl = ''
  if (isAudioMaterial && material.zipFileName) {
    // API已经根据用户网络位置处理了zipFileName：
    // - 内网用户：/uploads/xxx 或 内网MinIO地址
    // - 外网用户：/api/uploads/xxx 或 代理URL
    audioUrl = material.zipFileName
  }

  // 视频鼠标悬停播放控制
  const handleVideoMouseEnter = () => {
    if (videoRef.current) {
      videoRef.current.play().catch(() => {})
    }
  }
  
  const handleVideoMouseLeave = () => {
    if (videoRef.current) {
      videoRef.current.pause()
      videoRef.current.currentTime = 0
    }
  }

  // 复制ID到剪贴板
  const handleCopyId = async (e: React.MouseEvent) => {
    e.stopPropagation()
    try {
      await navigator.clipboard.writeText(material.id)
      showToast('ID已复制', { variant: 'success' })
    } catch {
      const textarea = document.createElement('textarea')
      textarea.value = material.id
      textarea.style.position = 'fixed'
      textarea.style.left = '-999999px'
      document.body.appendChild(textarea)
      textarea.select()
      try {
        document.execCommand('copy')
        showToast('ID已复制', { variant: 'success' })
      } catch {
        showToast('复制失败', { variant: 'error' })
      }
      document.body.removeChild(textarea)
    }
  }

  // 渲染转码进度
  const renderTranscodeProgress = () => {
    if (!isVideoType) return null
    
    const status = material.videoProcessingStatus
    const progress = material.transcodeProgress
    const stage = material.transcodeStage
    const attempts = material.transcodeAttempts || 0
    const queueIndex = material.transcodeQueueWaitingIndex
    const queueTotal = material.transcodeQueueWaitingTotal || 0
    const processingIds = material.transcodeQueueProcessingIds || []
    const maxConcurrent = material.transcodeQueueMaxConcurrent || 2
    const isProcessing = processingIds.includes(material.id)

    // 如果转码完成或没有视频源，不显示进度条
    if (!material.videoSourceUrl || status === 'done' || (status !== 'pending' && status !== 'processing' && status !== 'failed' && attempts === 0)) {
      return null
    }
    
    let label = ''
    let progressValue = 0
    let bgColor = 'bg-gray-700'
    
    if (status === 'failed') {
      const error = material.transcodeLastError || ''
      const errorMsg = error.replace(/^转码失败[:：]\s*/i, '').trim()
      label = errorMsg ? `转码失败：${errorMsg}` : '转码失败'
      progressValue = 0
      bgColor = 'bg-red-600'
    } else if (isProcessing) {
      const stageName = stage === 'preview' ? '预览视频' : stage === 'clip' ? '预览片段' : stage === 'cover' ? '封面图' : ''
      const processingCount = processingIds.length
      const waitingCount = Math.max(0, queueTotal - processingCount)
      
      if (progress !== null && progress !== undefined && progress > 0) {
        progressValue = Math.max(5, Math.min(progress, 95))
        label = `转码中 ${progress}%${stageName ? ` · ${stageName}` : ''}${attempts > 1 ? ` · 第${attempts}次` : ''}${waitingCount > 0 ? ` · 队列余${waitingCount}` : ''}`
      } else {
        progressValue = Math.max(28, Math.min(35 + 55 * Math.min(0.95, 0) + (attempts > 1 ? 5 : 0), 92))
        label = `转码中${stageName ? ` · ${stageName}` : ''}${attempts > 1 ? ` · 第${attempts}次` : ''}${waitingCount > 0 ? ` · 队列余${waitingCount}` : ''} · ${processingCount}/${maxConcurrent}并发`
      }
      bgColor = 'bg-blue-600'
    } else if (status === 'processing') {
      label = `转码中${attempts > 1 ? ` · 第${attempts}次` : ''}`
      progressValue = 15
      bgColor = 'bg-blue-600'
    } else if (status === 'pending') {
      label = `等待中${attempts > 1 ? ` · 第${attempts}次` : ''}`
      progressValue = 5
      bgColor = 'bg-gray-600'
    } else if (queueIndex !== null && queueIndex !== undefined) {
      const processingCount = processingIds.length
      label = `排队中 · ${queueIndex}/${queueTotal} · ${processingCount}/${maxConcurrent}执行中`
      progressValue = 8
      bgColor = 'bg-amber-600'
    } else {
      label = status || '未知状态'
      progressValue = 12
      bgColor = 'bg-gray-600'
    }

    return (
      <div className="absolute bottom-0 left-0 right-0 bg-black/80 text-white text-xs p-2 z-20">
        <div className="flex items-center justify-between mb-1">
          <span className="truncate">{label}</span>
          {status === 'failed' && !material.videoPreviewClipUrl && !material.videoPreview540Url && (
            <button
              onClick={(e) => {
                e.stopPropagation()
                onRetryTranscode(material.id)
              }}
              className="ml-2 bg-white/90 text-gray-900 px-2 py-0.5 rounded text-xs hover:bg-white transition-colors"
            >
              重试转码
            </button>
          )}
        </div>
        <div className="w-full bg-gray-700 rounded-full h-1.5 overflow-hidden">
          <div
            className={`h-full transition-all duration-300 ${bgColor}`}
            style={{ width: `${progressValue}%` }}
          />
        </div>
      </div>
    )
  }

  return (
    <div className="card-apple overflow-hidden dark:bg-gray-800 dark:border-gray-700">
      {/* Preview Image/Video */}
      <div
        className="relative w-full h-[400px] bg-gray-200 dark:bg-gray-700 cursor-pointer group overflow-hidden"
        data-material-link="true"
        onMouseEnter={() => isVideoType && videoPreviewUrl && handleVideoMouseEnter()}
        onMouseLeave={() => isVideoType && videoPreviewUrl && handleVideoMouseLeave()}
        onClick={() => onClick(material)}
      >
        {/* 视频类型 */}
        {isVideoType && videoPreviewUrl ? (
          <>
            <video
              ref={videoRef}
              src={videoPreviewUrl}
              poster={!posterLoadError && posterUrl ? posterUrl : undefined}
              className="w-full h-full object-cover transition-transform group-hover:scale-105"
              muted
              loop
              playsInline
              preload="metadata"
              onError={(e) => {
                // 视频加载失败时的错误处理
                console.error('[MaterialCard] 视频加载失败:', {
                  materialId: material.id,
                  productModel: material.productModel,
                  videoPreviewUrl: videoPreviewUrl,
                  posterUrl: posterUrl,
                  timestamp: new Date().toISOString()
                })
              }}
            />
            {/* 视频封面加载失败时的占位符 */}
            {posterLoadError && (
              <div className="absolute inset-0 w-full h-full flex items-center justify-center bg-gray-300 dark:bg-gray-600 z-10">
                <span className="text-gray-500 dark:text-gray-400 text-sm">封面加载失败</span>
              </div>
            )}
          </>
        ) : isAudioMaterial ? (
          // 音频素材卡片
          <div className="absolute inset-0 flex flex-col items-center justify-center bg-gradient-to-b from-slate-800 to-slate-900 overflow-hidden">
            {/* 圆形频谱可视化背景 */}
            {playingAudioId === material.id && audioElement && (
              <div className="absolute inset-0 flex items-center justify-center z-0">
                <AudioVisualizer
                  audioElement={audioElement}
                  isPlaying={true}
                  size="sm"
                  coverImage={material.previewUrl || null}
                  showCoverOnPause={false}
                />
              </div>
            )}

            {/* 播放进度条 - 独立的交互层 */}
            {playingAudioId === material.id && (
              <div 
                className="absolute bottom-0 left-0 right-0 h-6 z-[60] cursor-pointer"
                style={{ pointerEvents: 'auto' }}
                onClick={(e) => {
                  e.stopPropagation()
                  e.preventDefault()
                  if (audioRef?.current && audioRef.current.duration) {
                    const rect = e.currentTarget.getBoundingClientRect()
                    const percent = Math.max(0, Math.min(1, (e.clientX - rect.left) / rect.width))
                    audioRef.current.currentTime = audioRef.current.duration * percent
                  }
                }}
                onMouseDown={(e) => {
                  e.stopPropagation()
                  e.preventDefault()
                  const progressBar = e.currentTarget
                  let isDragging = true
                  
                  const handleMouseMove = (moveEvent: MouseEvent) => {
                    if (!isDragging) return
                    moveEvent.preventDefault()
                    moveEvent.stopPropagation()
                    if (audioRef?.current && audioRef.current.duration) {
                      const rect = progressBar.getBoundingClientRect()
                      const percent = Math.max(0, Math.min(1, (moveEvent.clientX - rect.left) / rect.width))
                      audioRef.current.currentTime = audioRef.current.duration * percent
                    }
                  }
                  
                  const handleMouseUp = (upEvent: MouseEvent) => {
                    upEvent.preventDefault()
                    upEvent.stopPropagation()
                    isDragging = false
                    document.removeEventListener('mousemove', handleMouseMove)
                    document.removeEventListener('mouseup', handleMouseUp)
                  }
                  
                  document.addEventListener('mousemove', handleMouseMove, { passive: false })
                  document.addEventListener('mouseup', handleMouseUp, { passive: false, once: true })
                }}
              >
                <div className="absolute bottom-0 left-0 right-0 h-2 bg-slate-700 group hover:h-3 transition-all pointer-events-none">
                  <div 
                    className="h-full bg-blue-500 transition-all duration-100 relative pointer-events-none"
                    style={{ width: `${audioProgress}%` }}
                  >
                    <div className="absolute right-0 top-1/2 -translate-y-1/2 w-3 h-3 bg-white rounded-full shadow-lg opacity-0 group-hover:opacity-100 transition-opacity pointer-events-none" />
                  </div>
                </div>
              </div>
            )}
            {/* 时长显示 */}
            {playingAudioId === material.id && audioDuration > 0 && (
              <div className="absolute bottom-2 left-2 bg-black/70 text-white px-2 py-1 rounded text-xs font-medium z-20">
                {Math.floor(audioCurrentTime / 60)}:{Math.floor(audioCurrentTime % 60).toString().padStart(2, '0')} / {Math.floor(audioDuration / 60)}:{Math.floor(audioDuration % 60).toString().padStart(2, '0')}
              </div>
            )}

            {/* 信息覆盖层 - 确保按钮在最上层，但不覆盖底部进度条区域 */}
            <div className="absolute inset-0 z-30 flex flex-col items-center justify-center pointer-events-none" style={{ bottom: playingAudioId === material.id ? '24px' : '0' }}>
              {material.previewUrl && playingAudioId !== material.id && (
                <Image
                  src={material.previewUrl}
                  alt={material.productModel}
                  fill
                  unoptimized
                  className="object-cover opacity-50"
                  sizes="(max-width: 768px) 100vw, 300px"
                />
              )}
              {/* 播放/暂停按钮 */}
              <button
                type="button"
                onClick={(e) => {
                  e.stopPropagation()
                  e.preventDefault()
                  if (audioUrl) {
                    onAudioPlay(material.id, audioUrl)
                  }
                }}
                className={`w-14 h-14 rounded-full backdrop-blur-sm flex items-center justify-center border transition-all pointer-events-auto relative z-40 ${
                  playingAudioId === material.id 
                    ? "bg-white/30 border-white/50 hover:bg-white/40" 
                    : "bg-white/20 border-white/30 group-hover:scale-110 hover:bg-white/30"
                }`}
              >
                {playingAudioId === material.id ? (
                  <svg className="w-7 h-7 text-white" fill="currentColor" viewBox="0 0 24 24">
                    <path d="M6 4h4v16H6V4zm8 0h4v16h-4V4z" />
                  </svg>
                ) : (
                  <svg className="w-7 h-7 text-white ml-1" fill="currentColor" viewBox="0 0 24 24">
                    <path d="M8 5v14l11-7z" />
                  </svg>
                )}
              </button>
              {playingAudioId !== material.id && (
                <p className="text-white text-sm font-medium text-center px-4 line-clamp-1 drop-shadow-lg mt-3">{material.productModel}</p>
              )}
            </div>
          </div>
        ) : material.previewUrl ? (
          <>
            <Image
              src={material.previewUrl}
              alt={material.sceneName}
              fill
              unoptimized
              className="object-cover transition-transform group-hover:scale-105"
              sizes="(max-width: 768px) 100vw, 300px"
              onError={(e) => {
                // 图片加载失败时，隐藏图片并显示占位符
                const target = e.target as HTMLImageElement
                const failedUrl = target.src
                console.error('[MaterialCard] 预览图加载失败:', {
                  materialId: material.id,
                  productModel: material.productModel,
                  previewUrl: material.previewUrl,
                  failedUrl: failedUrl,
                  timestamp: new Date().toISOString()
                })
                
                if (target.parentElement) {
                  target.style.display = 'none'
                  const placeholder = target.parentElement.querySelector('.image-placeholder')
                  if (placeholder) {
                    (placeholder as HTMLElement).style.display = 'flex'
                  }
                }
              }}
            />
            <div className="image-placeholder hidden w-full h-full items-center justify-center bg-gray-300 dark:bg-gray-600">
              <span className="text-gray-500 dark:text-gray-400 text-sm">图片加载失败</span>
            </div>
          </>
        ) : (
          <div className="w-full h-full flex items-center justify-center bg-gray-300 dark:bg-gray-600 audio-placeholder">
            <span className="text-gray-500 dark:text-gray-400">暂无预览图</span>
          </div>
        )}

        {/* SPU标签 - 左上角 */}
        <div className="absolute top-2 left-2 bg-black/70 text-white px-2 py-1 rounded text-xs font-medium z-10">
          {material.productModel}
        </div>
        {/* 素材类型角标 - 右上角 */}
        <div className={`absolute top-2 right-2 text-white px-2 py-1 rounded text-xs font-medium z-10 ${getMaterialTypeBadgeColor(material.materialType)}`}>
          {material.materialType}
        </div>
        {/* 放大提示 */}
        {!isVideoType && material.materialType !== '音乐' && (
          <div className="absolute inset-0 bg-black/0 group-hover:bg-black/30 transition-all flex items-center justify-center">
            <svg className="w-12 h-12 text-white opacity-0 group-hover:opacity-100 transition-opacity" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0zM10 7v6m3-3H7" />
            </svg>
          </div>
        )}
        
        {/* 转码进度显示 */}
        {renderTranscodeProgress()}
        
        {/* 视频时长角标 */}
        {isVideoType && material.videoDuration && (
          <div className="absolute bottom-2 left-2 bg-black/70 text-white px-2 py-1 rounded text-xs font-medium z-10">
            {Math.floor(material.videoDuration / 60)}:{(material.videoDuration % 60).toString().padStart(2, '0')}
          </div>
        )}
      </div>

      {/* Info */}
      <div className="p-4">
        {/* 标签 */}
        <div className="flex items-center gap-2 mb-3 flex-wrap">
          {material.categoryName && (
            <span className="inline-flex items-center px-2 py-1 bg-blue-100 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300 rounded text-xs font-medium">
              {material.categoryName}
            </span>
          )}
          {material.sceneName && (
            <span className="inline-flex items-center px-2 py-1 bg-green-100 dark:bg-green-900/30 text-green-700 dark:text-green-300 rounded text-xs font-medium">
              {material.sceneName}
            </span>
          )}
          {material.materialType && (
            <span className="inline-flex items-center px-2 py-1 bg-orange-100 dark:bg-orange-900/30 text-orange-700 dark:text-orange-300 rounded text-xs font-medium">
              {material.materialType}
            </span>
          )}
          {material.materialType === '3D场景' && material.renderer && (
            <span className="inline-flex items-center px-2 py-1 bg-purple-100 dark:bg-purple-900/30 text-purple-700 dark:text-purple-300 rounded text-xs font-medium">
              {material.renderer}
            </span>
          )}
        </div>

        {/* 作者和时间 */}
        <div className="space-y-1 text-sm text-gray-600 dark:text-gray-400 mb-3">
          <p className="truncate">
            <span className="font-medium">作者：</span>
            {material.authorName}
          </p>
          <p 
            className="truncate text-xs cursor-pointer hover:text-blue-600 dark:hover:text-blue-400 transition-colors"
            onClick={handleCopyId}
            title="点击复制完整ID"
          >
            <span className="font-medium">ID：</span>
            <span className="text-blue-600 dark:text-blue-400">{material.id}</span>
          </p>
          <p className="text-xs">
            <span className="font-medium">大小：</span>
            <span className="text-blue-600 dark:text-blue-400">{formatFileSize(material.zipFileSize)}</span>
          </p>
          <p className="text-xs text-gray-500 dark:text-gray-500">
            {format(new Date(material.createdAt), 'yyyy-MM-dd HH:mm')}
          </p>
        </div>

        {/* 统计数据 */}
        <div className="flex items-center justify-between text-xs text-gray-500 dark:text-gray-400 mb-3 pb-3 border-b border-gray-200 dark:border-gray-700">
          <div className="flex items-center gap-3">
            <span className="flex items-center gap-1">
              <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4" />
              </svg>
              {material.downloadCount}
            </span>
            <button
              onClick={(e) => {
                e.stopPropagation()
                onLike(material.id)
              }}
              className={`flex items-center gap-1 transition-colors ${
                material.isLiked 
                  ? 'text-red-600 dark:text-red-400' 
                  : 'text-gray-500 dark:text-gray-400 hover:text-red-600 dark:hover:text-red-400'
              }`}
              title={material.isLiked ? '取消点赞' : '点赞'}
            >
              <svg 
                className="w-4 h-4" 
                fill={material.isLiked ? 'currentColor' : 'none'}
                stroke="currentColor" 
                viewBox="0 0 24 24"
                strokeWidth={material.isLiked ? 0 : 2}
              >
                <path strokeLinecap="round" strokeLinejoin="round" d="M4.318 6.318a4.5 4.5 0 000 6.364L12 20.364l7.682-7.682a4.5 4.5 0 00-6.364-6.364L12 7.636l-1.318-1.318a4.5 4.5 0 00-6.364 0z" />
              </svg>
              {material.likeCount}
            </button>
          </div>
        </div>

        {/* Action Buttons */}
        <div className="flex gap-2 items-center">
          {/* 编辑按钮 */}
          {session?.user && (
            material.userId === session.user.id || session.user.role === 'ADMIN'
          ) && (
            <button
              onClick={() => onEdit(material)}
              className="flex-none h-10 w-10 flex items-center justify-center rounded-xl border border-blue-200 dark:border-blue-800 bg-blue-50 dark:bg-blue-900/30 text-blue-600 dark:text-blue-400 hover:bg-blue-100 dark:hover:bg-blue-900/50 transition-all"
              title="编辑"
            >
              <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z" />
              </svg>
            </button>
          )}
          {/* 删除按钮 */}
          {session?.user && session.user.role === 'ADMIN' && (
            <button
              onClick={(e) => {
                e.stopPropagation()
                onDelete(material.id)
              }}
              className="flex-none h-10 w-10 flex items-center justify-center rounded-xl border border-red-200 dark:border-red-800 bg-red-50 dark:bg-red-900/30 text-red-600 dark:text-red-400 hover:bg-red-100 dark:hover:bg-red-900/50 transition-all"
              title="删除"
            >
              <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16" />
              </svg>
            </button>
          )}
          {/* 收藏按钮 */}
          {session?.user && (
            <button
              onClick={(e) => {
                e.stopPropagation()
                onFavorite(material.id)
              }}
              className={`flex-none h-10 w-10 flex items-center justify-center rounded-xl border transition-all ${
                material.isFavorited 
                  ? 'border-pink-500 bg-pink-500 text-white hover:bg-pink-600' 
                  : 'border-gray-300 dark:border-gray-600 text-gray-600 dark:text-gray-400 hover:bg-gray-50 dark:hover:bg-gray-800'
              }`}
              title={material.isFavorited ? '取消收藏' : '收藏'}
            >
              <svg 
                className="w-5 h-5" 
                viewBox="0 0 24 24" 
                fill={material.isFavorited ? 'currentColor' : 'none'}
                stroke="currentColor" 
                strokeWidth={material.isFavorited ? 0 : 2}
              >
                <path 
                  strokeLinecap="round" 
                  strokeLinejoin="round" 
                  d="M6 4h12a1 1 0 011 1v15.382a.5.5 0 01-.777.416L12 17.5l-6.223 3.298A.5.5 0 015 20.382V5a1 1 0 011-1z" 
                />
              </svg>
            </button>
          )}

          {/* 分享按钮 */}
          <button
            onClick={() => onShare(material.id)}
            className="flex-none h-10 w-10 flex items-center justify-center rounded-xl border border-gray-300 dark:border-gray-600 bg-gray-50 dark:bg-gray-800 text-gray-600 dark:text-gray-400 hover:bg-gray-100 dark:hover:bg-gray-700 transition-all"
            title="分享"
          >
            <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M8.684 13.342C8.886 12.938 9 12.482 9 12c0-.482-.114-.938-.316-1.342m0 2.684a3 3 0 110-2.684m0 2.684l6.632 3.316m-6.632-6l6.632-3.316m0 0a3 3 0 105.367-2.684 3 3 0 00-5.367 2.684zm0 9.316a3 3 0 105.368 2.684 3 3 0 00-5.368-2.684z" />
            </svg>
          </button>
          {/* 下载按钮 */}
          <button
            onClick={() => onDownload(material.id)}
            disabled={downloadingId === material.id}
            className="flex-1 h-10 btn-primary text-sm font-medium rounded-xl transition-all disabled:opacity-50 flex items-center justify-center relative overflow-hidden whitespace-nowrap"
            style={{ backgroundColor: themeColor }}
          >
            {downloadingId === material.id ? (
              <>
                <div
                  className="absolute left-0 top-0 bottom-0 bg-blue-600 transition-all duration-300"
                  style={{ width: `${downloadProgress}%` }}
                />
                <span className="relative z-10 flex items-center justify-center gap-2">
                  <svg className="w-4 h-4 animate-spin" fill="none" viewBox="0 0 24 24">
                    <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
                    <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z" />
                  </svg>
                  {downloadProgress}%
                </span>
              </>
            ) : (
              <span className="whitespace-nowrap">下载</span>
            )}
          </button>
        </div>
      </div>
    </div>
  )
}