src/views/torrent/TorrentDetailView.vue

<template>
  <div class="torrent-detail-page">
    <div class="page-container">
      <!-- 加载状态 -->
      <div v-if="loading" class="loading-container">
        <el-skeleton :rows="8" animated />
      </div>

      <!-- 详情内容 -->
      <div v-else-if="torrentInfo">
        <!-- 返回按钮 -->
        <div class="back-button">
          <el-button :icon="ArrowLeft" @click="$router.back()">
            返回列表
          </el-button>
        </div>

        <!-- 种子基本信息 -->
        <div class="torrent-header">
          <div class="header-content">
            <div class="torrent-cover">
              <el-image
                :src="torrentInfo.coverImage || '/default-cover.jpg'"
                :alt="torrentInfo.title"
                fit="cover"
                class="cover-image"
              >
                <template #error>
                  <div class="image-placeholder">
                    <el-icon size="48"><Picture /></el-icon>
                    <span>暂无封面</span>
                  </div>
                </template>
              </el-image>
            </div>
            
            <div class="torrent-info">
              <div class="category-tag">
                <el-tag :type="getCategoryType(torrentInfo.category?.slug)" size="large">
                  {{ torrentInfo.category?.name || '未分类' }}
                </el-tag>
                <el-tag v-if="torrentInfo.subTitle" type="info" size="small">
                  {{ torrentInfo.subTitle }}
                </el-tag>
              </div>
              
              <h1 class="torrent-title">{{ torrentInfo.title }}</h1>
              
              <div class="torrent-tags" v-if="torrentInfo.tag && torrentInfo.tag.length > 0">
                <el-tag
                  v-for="(tag, index) in parsedTags"
                  :key="index"
                  size="small"
                  effect="plain"
                >
                  {{ tag }}
                </el-tag>
              </div>
              
              <div class="torrent-meta">
                <div class="meta-item">
                  <el-icon><User /></el-icon>
                  <span>上传者：{{ torrentInfo.user?.username || '匿名用户' }}</span>
                </div>
                <div class="meta-item">
                  <el-icon><Clock /></el-icon>
                  <span>上传时间：{{ formatDateTime(torrentInfo.createdAt) }}</span>
                </div>
                <div class="meta-item">
                  <el-icon><Document /></el-icon>
                  <span>文件大小：{{ formatFileSize(torrentInfo.size) }}</span>
                </div>
                <div class="meta-item">
                  <el-icon><Files /></el-icon>
                  <span>完成次数：{{ torrentInfo.finishes }} 次</span>
                </div>
                <div class="meta-item">
                  <el-icon><Star /></el-icon>
                  <span>推广策略：{{ torrentInfo.promotionPolicy?.displayName || '默认' }}</span>
                </div>
              </div>
              
              <div class="torrent-stats">
                <div class="stat-item seeders">
                  <span class="stat-number">{{ peerStats.seeders }}</span>
                  <span class="stat-label">做种</span>
                </div>
                <div class="stat-item leechers">
                  <span class="stat-number">{{ peerStats.leechers }}</span>
                  <span class="stat-label">下载</span>
                </div>
                <div class="stat-item downloads">
                  <span class="stat-number">{{ torrentInfo.finishes }}</span>
                  <span class="stat-label">完成</span>
                </div>
              </div>
              
              <div class="action-buttons">
                <el-button 
                  type="primary" 
                  size="large" 
                  :icon="Download"
                  @click="handleDownload"
                  :loading="downloading"
                >
                  {{ downloading ? '准备中...' : '下载种子' }}
                </el-button>
                <el-button 
                  type="success" 
                  size="large" 
                  :icon="Star"
                  @click="handleFavorite"
                >
                  {{ isFavorited ? '已收藏' : '收藏' }}
                </el-button>
                <el-button 
                  type="warning" 
                  size="large" 
                  :icon="Flag"
                  @click="handleReport"
                >
                  举报
                </el-button>
              </div>
            </div>
          </div>
        </div>

        <!-- 详细信息选项卡 -->
        <div class="detail-tabs">
          <el-tabs v-model="activeTab" type="border-card">
            <!-- 种子描述 -->
            <el-tab-pane label="详细描述" name="description">
              <div class="description-content">
                <div v-if="torrentInfo.description" v-html="formatDescription(torrentInfo.description)"></div>
                <div v-else class="no-description">暂无详细描述</div>
              </div>
            </el-tab-pane>
            
            <!-- 文件列表 -->
            <el-tab-pane label="文件列表" name="files" lazy>
              <div class="files-list">
                <div v-if="torrentFiles.length > 0">
                  <el-table :data="torrentFiles" stripe>
                    <el-table-column label="文件名" prop="name" min-width="400">
                      <template #default="{ row }">
                        <div class="file-name">
                          <el-icon v-if="row.type === 'folder'"><Folder /></el-icon>
                          <el-icon v-else><Document /></el-icon>
                          <span>{{ row.name }}</span>
                        </div>
                      </template>
                    </el-table-column>
                    <el-table-column label="大小" prop="size" width="120" align="right" />
                    <el-table-column label="路径" prop="path" min-width="300" />
                  </el-table>
                </div>
                <div v-else class="no-files">
                  <el-empty description="文件列表加载中..." />
                </div>
              </div>
            </el-tab-pane>
            
            <!-- 用户活动 -->
            <el-tab-pane label="用户活动" name="activity">
              <div class="activity-section">
                <div class="activity-stats">
                  <div class="stats-grid">
                    <div class="stat-card">
                      <h3>做种用户</h3>
                      <p class="stat-number">{{ peerStats.seeders }}</p>
                    </div>
                    <div class="stat-card">
                      <h3>下载用户</h3>
                      <p class="stat-number">{{ peerStats.leechers }}</p>
                    </div>
                    <div class="stat-card">
                      <h3>完成用户</h3>
                      <p class="stat-number">{{ torrentInfo.finishes }}</p>
                    </div>
                  </div>
                </div>
                
                <div class="user-lists">
                  <el-tabs v-model="activityTab" type="card">
                    <el-tab-pane label="做种用户" name="seeders">
                      <el-table :data="seedersList" max-height="400">
                        <el-table-column label="用户" prop="username" />
                        <el-table-column label="上传量" prop="uploaded" />
                        <el-table-column label="下载量" prop="downloaded" />
                        <el-table-column label="分享率" prop="ratio" />
                        <el-table-column label="做种时间" prop="seedTime" />
                      </el-table>
                    </el-tab-pane>
                    
                    <el-tab-pane label="下载用户" name="leechers">
                      <el-table :data="leechersList" max-height="400">
                        <el-table-column label="用户" prop="username" />
                        <el-table-column label="进度" prop="progress">
                          <template #default="{ row }">
                            <el-progress :percentage="row.progress" :stroke-width="6" />
                          </template>
                        </el-table-column>
                        <el-table-column label="下载速度" prop="downloadSpeed" />
                        <el-table-column label="剩余时间" prop="eta" />
                      </el-table>
                    </el-tab-pane>
                  </el-tabs>
                </div>
              </div>
            </el-tab-pane>
            
            <!-- 评论区 -->
            <el-tab-pane label="评论" name="comments">
              <div class="comments-section">
                <!-- 发表评论 -->
                <div class="comment-form">
                  <el-input
                    v-model="newComment"
                    type="textarea"
                    :rows="4"
                    placeholder="发表你的评论..."
                    maxlength="500"
                    show-word-limit
                  />
                  <div class="comment-actions">
                    <el-button type="primary" @click="submitComment" :loading="submittingComment">
                      发表评论
                    </el-button>
                  </div>
                </div>
                
                <!-- 评论列表 -->
                <div class="comments-list">
                  <div
                    v-for="comment in comments"
                    :key="comment.id"
                    class="comment-item"
                  >
                    <div class="comment-avatar">
                      <el-avatar :size="40">{{ comment.username.charAt(0) }}</el-avatar>
                    </div>
                    <div class="comment-content">
                      <div class="comment-header">
                        <span class="comment-username">{{ comment.username }}</span>
                        <span class="comment-time">{{ formatDateTime(comment.time) }}</span>
                      </div>
                      <div class="comment-text">{{ comment.content }}</div>
                      <div class="comment-actions">
                        <el-button type="text" size="small" @click="likeComment(comment.id)">
                          <el-icon><Like /></el-icon>
                          {{ comment.likes || 0 }}
                        </el-button>
                        <el-button type="text" size="small" @click="replyComment(comment.id)">
                          回复
                        </el-button>
                      </div>
                    </div>
                  </div>
                  
                  <div v-if="comments.length === 0" class="no-comments">
                    暂无评论，快来发表第一条评论吧！
                  </div>
                </div>
              </div>
            </el-tab-pane>
          </el-tabs>
        </div>
      </div>

      <!-- 错误状态 -->
      <div v-else class="error-container">
        <el-empty description="种子信息加载失败">
          <el-button type="primary" @click="retry">重试</el-button>
        </el-empty>
      </div>
    </div>
  </div>
</template>

<script>
import { ref, onMounted, computed } from 'vue'
import { useRoute, useRouter } from 'vue-router'
import { ElMessage, ElMessageBox } from 'element-plus'
import {
  ArrowLeft,
  Download,
  Star,
  Flag,
  User,
  Clock,
  Document,
  Files,
  Picture,
  Folder,
  Like
} from '@element-plus/icons-vue'
import axios from 'axios'

export default {
  name: 'TorrentDetailView',
  components: {
    ArrowLeft,
    Download,
    Star,
    Flag,
    User,
    Clock,
    Document,
    Files,
    Picture,
    Folder,
    Like
  },
  setup() {
    const route = useRoute()
    const router = useRouter()
    
    const loading = ref(true)
    const activeTab = ref('description')
    const activityTab = ref('seeders')
    const downloading = ref(false)
    const isFavorited = ref(false)
    const submittingComment = ref(false)
    const newComment = ref('')
    
    const torrentInfo = ref(null)
    const torrentFiles = ref([])
    const peerStats = ref({
      seeders: 0,
      leechers: 0
    })
    
    const seedersList = ref([])
    const leechersList = ref([])
    const comments = ref([])
    
    // 解析标签
    const parsedTags = computed(() => {
      if (!torrentInfo.value?.tag || !Array.isArray(torrentInfo.value.tag)) {
        return []
      }
      
      const tags = []
      torrentInfo.value.tag.forEach(tagString => {
        try {
          const parsed = JSON.parse(tagString)
          if (Array.isArray(parsed)) {
            tags.push(...parsed)
          } else {
            tags.push(parsed)
          }
        } catch (e) {
          tags.push(tagString)
        }
      })
      return tags
    })
    
    onMounted(() => {
      const infoHash = route.params.infoHash
      if (infoHash) {
        fetchTorrentDetail(infoHash)
      } else {
        ElMessage.error('缺少种子标识符')
        router.back()
      }
    })
    
    const fetchTorrentDetail = async (infoHash) => {
      try {
        loading.value = true
        
        // 获取种子详情
        const response = await axios.get(`/api/torrent/view/${infoHash}`)
        
        if (response.data.code === 0) {
          torrentInfo.value = response.data
          
          // 获取文件列表（如果有相关API）
          await fetchTorrentFiles(infoHash)
          
          // 获取用户活动数据（如果有相关API）
          await fetchPeerStats(infoHash)
          
          // 获取评论（如果有相关API）
          await fetchComments(infoHash)
        } else {
          throw new Error(response.data.message || '获取种子详情失败')
        }
      } catch (error) {
        console.error('获取种子详情失败:', error)
        ElMessage.error(error.message || '获取种子详情失败')
        torrentInfo.value = null
      } finally {
        loading.value = false
      }
    }
    
    const fetchTorrentFiles = async (infoHash) => {
      try {
        if (torrentInfo.value?.fileList) {
          // 将文件列表转换为所需的格式
          torrentFiles.value = Object.entries(torrentInfo.value.fileList).map(([path, size]) => ({
            name: path.split('/').pop() || path, // 获取文件名
            type: 'file',
            size: formatFileSize(size),
            path: path.split('/').slice(0, -1).join('/') || '/' // 获取文件路径
          }))
        } else {
          // 如果是单文件种子，使用种子标题作为文件名
          torrentFiles.value = [
            {
              name: torrentInfo.value?.title || 'unknown',
              type: 'file',
              size: formatFileSize(torrentInfo.value?.size || 0),
              path: '/'
            }
          ]
        }
      } catch (error) {
        console.error('获取文件列表失败:', error)
      }
    }
    
    const fetchPeerStats = async (infoHash) => {
      try {
        // 这里应该调用获取用户活动数据的API
        // const response = await axios.get(`http://localhost:8081/api/torrent/${infoHash}/peers`)
        // peerStats.value = response.data
        
        // 临时模拟数据
        peerStats.value = {
          seeders: Math.floor(Math.random() * 50) + 10,
          leechers: Math.floor(Math.random() * 30) + 5
        }
        
        // 模拟用户列表
        seedersList.value = [
          { username: 'SeedMaster', uploaded: '2.5 TB', downloaded: '850 GB', ratio: '3.02', seedTime: '15天' }
        ]
        
        leechersList.value = [
          { username: 'NewUser123', progress: 65, downloadSpeed: '15.2 MB/s', eta: '2小时15分' }
        ]
      } catch (error) {
        console.error('获取用户活动数据失败:', error)
      }
    }
    
    const fetchComments = async (infoHash) => {
      try {
        // 这里应该调用获取评论的API
        // const response = await axios.get(`http://localhost:8081/api/torrent/${infoHash}/comments`)
        // comments.value = response.data
        
        // 临时模拟数据
        comments.value = []
      } catch (error) {
        console.error('获取评论失败:', error)
      }
    }
    
    const formatDateTime = (timestamp) => {
      if (!timestamp) return '未知'
      const date = new Date(timestamp)
      return date.toLocaleString('zh-CN', {
        year: 'numeric',
        month: '2-digit',
        day: '2-digit',
        hour: '2-digit',
        minute: '2-digit'
      })
    }
    
    const formatFileSize = (bytes) => {
      if (!bytes || bytes === 0) return '0 B'
      
      const k = 1024
      const sizes = ['B', 'KB', 'MB', 'GB', 'TB']
      const i = Math.floor(Math.log(bytes) / Math.log(k))
      
      return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i]
    }
    
    const formatDescription = (description) => {
      if (!description) return ''
      return description.replace(/\n/g, '<br>')
    }
    
    const getCategoryType = (categorySlug) => {
      const types = {
        'os': 'primary',
        'movie': 'primary',
        'tv': 'info',
        'music': 'success',
        'software': 'warning',
        'game': 'danger'
      }
      return types[categorySlug] || 'default'
    }
    
    const handleDownload = async () => {
      if (!torrentInfo.value?.infoHash) return
      
      downloading.value = true
      try {
        // 调用下载种子文件的API
        const response = await axios.get(
          `/api/torrent/download/${torrentInfo.value.infoHash}`,
          { 
            responseType: 'blob',
            // 如果需要传递passkey，可以在这里添加params
            params: {
              // passkey: userStore.passkey // 如果你有用户store存储passkey
            }
          }
        )
        
        // 从响应头中获取文件名，如果没有则使用默认格式
        let fileName = response.headers?.['content-disposition']?.split('filename=')[1]
        if (!fileName) {
          // 使用默认的文件名格式
          fileName = `${torrentInfo.value.title}.torrent`
        } else {
          // 解码文件名
          fileName = decodeURIComponent(fileName)
        }
        
        // 创建下载链接
        const url = window.URL.createObjectURL(new Blob([response.data], { type: 'application/x-bittorrent' }))
        const link = document.createElement('a')
        link.href = url
        link.download = fileName
        document.body.appendChild(link)
        link.click()
        document.body.removeChild(link)
        window.URL.revokeObjectURL(url)
        
        ElMessage.success('种子文件下载完成')
      } catch (error) {
        console.error('下载失败:', error)
        ElMessage.error(error.response?.data?.message || '下载失败，请稍后重试')
      } finally {
        downloading.value = false
      }
    }
    
    const handleFavorite = () => {
      isFavorited.value = !isFavorited.value
      ElMessage.success(isFavorited.value ? '已添加到收藏' : '已取消收藏')
    }
    
    const handleReport = async () => {
      try {
        await ElMessageBox.prompt('请说明举报原因', '举报内容', {
          confirmButtonText: '提交举报',
          cancelButtonText: '取消',
          inputType: 'textarea',
          inputPlaceholder: '请详细说明举报原因...'
        })
        
        ElMessage.success('举报已提交，我们会尽快处理')
      } catch {
        // 用户取消
      }
    }
    
    const submitComment = async () => {
      if (!newComment.value.trim()) {
        ElMessage.warning('请输入评论内容')
        return
      }
      
      submittingComment.value = true
      try {
        // 这里应该调用提交评论的API
        // await axios.post(`http://localhost:8081/api/torrent/${torrentInfo.value.infoHash}/comments`, {
        //   content: newComment.value
        // })
        
        // 模拟提交
        await new Promise(resolve => setTimeout(resolve, 1000))
        
        const comment = {
          id: Date.now(),
          username: localStorage.getItem('username') || '用户',
          content: newComment.value,
          time: new Date().toISOString(),
          likes: 0
        }
        
        comments.value.unshift(comment)
        newComment.value = ''
        
        ElMessage.success('评论发表成功')
      } catch (error) {
        console.error('发表评论失败:', error)
        ElMessage.error('发表评论失败')
      } finally {
        submittingComment.value = false
      }
    }
    
    const likeComment = (commentId) => {
      const comment = comments.value.find(c => c.id === commentId)
      if (comment) {
        comment.likes = (comment.likes || 0) + 1
        ElMessage.success('点赞成功')
      }
    }
    
    const replyComment = (commentId) => {
      ElMessage.info('回复功能开发中...')
    }
    
    const retry = () => {
      const infoHash = route.params.infoHash
      if (infoHash) {
        fetchTorrentDetail(infoHash)
      }
    }
    
    return {
      loading,
      activeTab,
      activityTab,
      downloading,
      isFavorited,
      submittingComment,
      newComment,
      torrentInfo,
      torrentFiles,
      peerStats,
      parsedTags,
      seedersList,
      leechersList,
      comments,
      formatDateTime,
      formatFileSize,
      formatDescription,
      getCategoryType,
      handleDownload,
      handleFavorite,
      handleReport,
      submitComment,
      likeComment,
      replyComment,
      retry,
      ArrowLeft,
      Download,
      Star,
      Flag,
      User,
      Clock,
      Document,
      Files,
      Picture,
      Folder,
      Like
    }
  }
}
</script>

<style lang="scss" scoped>
.torrent-detail-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
  background: #f5f5f5;
  min-height: 100vh;
}

.loading-container, .error-container {
  background: #fff;
  border-radius: 12px;
  padding: 40px;
  text-align: center;
}

.back-button {
  margin-bottom: 16px;
}

.torrent-header {
  background: #fff;
  border-radius: 12px;
  padding: 32px;
  margin-bottom: 24px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  
  .header-content {
    display: flex;
    gap: 32px;
    
    .torrent-cover {
      flex-shrink: 0;
      
      .cover-image {
        width: 200px;
        height: 280px;
        border-radius: 8px;
        object-fit: cover;
      }
      
      .image-placeholder {
        width: 200px;
        height: 280px;
        background: #f5f5f5;
        border-radius: 8px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        color: #999;
        
        span {
          margin-top: 8px;
          font-size: 14px;
        }
      }
    }
    
    .torrent-info {
      flex: 1;
      
      .category-tag {
        margin-bottom: 16px;
        
        .el-tag {
          margin-right: 8px;
        }
      }
      
      .torrent-title {
        font-size: 28px;
        font-weight: 600;
        color: #2c3e50;
        margin: 0 0 16px 0;
        line-height: 1.3;
      }
      
      .torrent-tags {
        margin-bottom: 20px;
        
        .el-tag {
          margin: 0 8px 8px 0;
        }
      }
      
      .torrent-meta {
        margin-bottom: 20px;
        
        .meta-item {
          display: flex;
          align-items: center;
          gap: 8px;
          margin-bottom: 8px;
          color: #7f8c8d;
          font-size: 14px;
          
          .el-icon {
            color: #909399;
          }
        }
      }
      
      .torrent-stats {
        display: flex;
        gap: 32px;
        margin-bottom: 24px;
        
        .stat-item {
          text-align: center;
          
          .stat-number {
            display: block;
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 4px;
            color: #2c3e50;
          }
          
          .stat-label {
            font-size: 14px;
            color: #909399;
          }
          
          &.seeders .stat-number { color: #67c23a; }
          &.leechers .stat-number { color: #f56c6c; }
          &.downloads .stat-number { color: #409eff; }
        }
      }
      
      .action-buttons {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
      }
    }
  }
}

.detail-tabs {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  
  :deep(.el-tabs__content) {
    padding: 24px;
  }
  
  .description-content {
    line-height: 1.6;
    
    :deep(h3) {
      color: #2c3e50;
      font-size: 18px;
      font-weight: 600;
      margin: 24px 0 12px 0;
      
      &:first-child {
        margin-top: 0;
      }
    }
    
    :deep(p) {
      margin-bottom: 12px;
      color: #5a6c7d;
    }
    
    :deep(ul) {
      margin: 12px 0;
      padding-left: 20px;
      
      li {
        margin-bottom: 8px;
        color: #5a6c7d;
      }
    }
    
    .no-description {
      text-align: center;
      color: #909399;
      padding: 40px 0;
    }
  }
  
  .files-list {
    .file-name {
      display: flex;
      align-items: center;
      gap: 8px;
      
      .el-icon {
        color: #909399;
      }
    }
    
    .no-files {
      padding: 40px 0;
    }
  }
  
  .activity-section {
    .activity-stats {
      margin-bottom: 24px;
      
      .stats-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 16px;
        
        .stat-card {
          background: #f8f9fa;
          padding: 20px;
          border-radius: 8px;
          text-align: center;
          
          h3 {
            font-size: 14px;
            color: #909399;
            margin: 0 0 8px 0;
          }
          
          .stat-number {
            font-size: 24px;
            font-weight: 600;
            color: #2c3e50;
          }
        }
      }
    }
  }
  
  .comments-section {
    .comment-form {
      margin-bottom: 32px;
      
      .comment-actions {
        margin-top: 12px;
        text-align: right;
      }
    }
    
    .comments-list {
      .comment-item {
        display: flex;
        gap: 16px;
        margin-bottom: 24px;
        padding-bottom: 24px;
        border-bottom: 1px solid #f0f0f0;
        
        &:last-child {
          border-bottom: none;
          margin-bottom: 0;
          padding-bottom: 0;
        }
        
        .comment-content {
          flex: 1;
          
          .comment-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            
            .comment-username {
              font-weight: 600;
              color: #2c3e50;
            }
            
            .comment-time {
              font-size: 12px;
              color: #909399;
            }
          }
          
          .comment-text {
            color: #5a6c7d;
            line-height: 1.5;
            margin-bottom: 12px;
          }
          
          .comment-actions {
            .el-button {
              padding: 0;
              margin-right: 16px;
              
              .el-icon {
                margin-right: 4px;
              }
            }
          }
        }
      }
      
      .no-comments {
        text-align: center;
        color: #909399;
        padding: 40px 0;
      }
    }
  }
}

// 响应式设计
@media (max-width: 768px) {
  .torrent-detail-page {
    padding: 16px;
  }
  
  .torrent-header .header-content {
    flex-direction: column;
    text-align: center;
    
    .torrent-cover {
      align-self: center;
    }
    
    .torrent-stats {
      justify-content: center;
    }
    
    .action-buttons {
      justify-content: center;
    }
  }
  
  .activity-section .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .comment-item {
    flex-direction: column;
    gap: 12px;
  }
}
</style>