first commit

2025-09-23 07:35:11 +00:00
commit a5dd3f1335
110 changed files with 46108 additions and 0 deletions
--- a/api/routes/topics.ts
+++ b/api/routes/topics.ts
@@ -0,0 +1,356 @@
+/**
+ * 专题管理API路由
+ * Handle topic CRUD operations
+ */
+import { Router, type Request, type Response } from 'express';
+import { query, queryOne, execute } from '../config/database.js';
+import { authenticateToken, optionalAuth } from '../middleware/auth.js';
+
+const router = Router();
+
+/**
+ * 获取所有专题列表
+ * GET /api/topics
+ */
+router.get('/', optionalAuth, async (req: Request, res: Response): Promise<void> => {
+  try {
+    const topics = await query(`
+      SELECT 
+        t.id,
+        t.name,
+        t.description,
+        t.cover_image,
+        t.sort_order,
+        t.status,
+        t.created_at,
+        COUNT(vt.video_id) as video_count
+      FROM topics t
+      LEFT JOIN video_topics vt ON t.id = vt.topic_id
+      WHERE t.status = 'active'
+      GROUP BY t.id, t.name, t.description, t.cover_image, t.sort_order, t.status, t.created_at
+      ORDER BY t.sort_order ASC, t.created_at DESC
+    `);
+
+    res.json({
+      code: 200,
+      message: '获取成功',
+      data: topics
+    });
+  } catch (error) {
+    console.error('获取专题列表失败:', error);
+    res.status(500).json({
+      code: 500,
+      message: '服务器内部错误'
+    });
+  }
+});
+
+/**
+ * 获取专题详情及其视频列表
+ * GET /api/topics/:id
+ */
+router.get('/:id', optionalAuth, async (req: Request, res: Response): Promise<void> => {
+  try {
+    const topicId = parseInt(req.params.id);
+    const page = parseInt(req.query.page as string) || 1;
+    const limit = parseInt(req.query.limit as string) || 12;
+    const offset = (page - 1) * limit;
+
+    if (isNaN(topicId)) {
+      res.status(400).json({
+        code: 400,
+        message: '无效的专题ID'
+      });
+      return;
+    }
+
+    // 获取专题信息
+    const topic = await queryOne(`
+      SELECT 
+        t.id,
+        t.name,
+        t.description,
+        t.cover_image,
+        t.sort_order,
+        t.status,
+        t.created_at,
+        COUNT(vt.video_id) as video_count
+      FROM topics t
+      LEFT JOIN video_topics vt ON t.id = vt.topic_id
+      WHERE t.id = ? AND t.status = 'active'
+      GROUP BY t.id, t.name, t.description, t.cover_image, t.sort_order, t.status, t.created_at
+    `, [topicId]);
+
+    if (!topic) {
+      res.status(404).json({
+        code: 404,
+        message: '专题不存在'
+      });
+      return;
+    }
+
+    // 获取专题下的视频列表
+    const videos = await query(`
+      SELECT 
+        v.id,
+        v.title,
+        v.description,
+        v.file_path,
+        v.video_url,
+        v.cover_image,
+        v.duration,
+        v.file_size,
+        v.created_at,
+        u.username as uploader,
+        COALESCE(vs.views, 0) as views,
+        COALESCE(vs.likes, 0) as likes
+      FROM videos v
+      INNER JOIN video_topics vt ON v.id = vt.video_id
+      LEFT JOIN users u ON v.user_id = u.id
+      LEFT JOIN video_stats vs ON v.id = vs.video_id
+      WHERE vt.topic_id = ? AND v.status = 'active'
+      ORDER BY v.created_at DESC
+      LIMIT ? OFFSET ?
+    `, [topicId, limit, offset]);
+
+    // 获取总数
+    const totalResult = await queryOne(`
+      SELECT COUNT(*) as total
+      FROM videos v
+      INNER JOIN video_topics vt ON v.id = vt.video_id
+      WHERE vt.topic_id = ? AND v.status = 'active'
+    `, [topicId]);
+
+    const total = totalResult.total;
+    const totalPages = Math.ceil(total / limit);
+
+    res.json({
+      code: 200,
+      message: '获取成功',
+      data: {
+        topic,
+        videos: {
+          list: videos,
+          total,
+          page,
+          limit,
+          totalPages,
+          hasNext: page < totalPages,
+          hasPrev: page > 1
+        }
+      }
+    });
+  } catch (error) {
+    console.error('获取专题详情失败:', error);
+    res.status(500).json({
+      code: 500,
+      message: '服务器内部错误'
+    });
+  }
+});
+
+/**
+ * 创建新专题（管理员功能）
+ * POST /api/topics
+ */
+router.post('/', authenticateToken, async (req: Request, res: Response): Promise<void> => {
+  try {
+    const { name, description, cover_image, sort_order } = req.body;
+
+    if (!name) {
+      res.status(400).json({
+        code: 400,
+        message: '专题名称不能为空'
+      });
+      return;
+    }
+
+    // 检查专题名称是否已存在
+    const existingTopic = await queryOne('SELECT id FROM topics WHERE name = ?', [name]);
+    if (existingTopic) {
+      res.status(400).json({
+        code: 400,
+        message: '专题名称已存在'
+      });
+      return;
+    }
+
+    const result = await execute(`
+      INSERT INTO topics (name, description, cover_image, sort_order, created_at)
+      VALUES (?, ?, ?, ?, datetime('now'))
+    `, [name, description || '', cover_image || '', sort_order || 0]);
+
+    res.status(201).json({
+      code: 201,
+      message: '专题创建成功',
+      data: {
+        id: result.lastID,
+        name,
+        description,
+        cover_image,
+        sort_order
+      }
+    });
+  } catch (error) {
+    console.error('创建专题失败:', error);
+    res.status(500).json({
+      code: 500,
+      message: '服务器内部错误'
+    });
+  }
+});
+
+/**
+ * 更新专题信息（管理员功能）
+ * PUT /api/topics/:id
+ */
+router.put('/:id', authenticateToken, async (req: Request, res: Response): Promise<void> => {
+  try {
+    const topicId = parseInt(req.params.id);
+    const { name, description, cover_image, sort_order, status } = req.body;
+
+    if (isNaN(topicId)) {
+      res.status(400).json({
+        code: 400,
+        message: '无效的专题ID'
+      });
+      return;
+    }
+
+    if (!name) {
+      res.status(400).json({
+        code: 400,
+        message: '专题名称不能为空'
+      });
+      return;
+    }
+
+    // 检查专题是否存在
+    const existingTopic = await queryOne('SELECT id FROM topics WHERE id = ?', [topicId]);
+    if (!existingTopic) {
+      res.status(404).json({
+        code: 404,
+        message: '专题不存在'
+      });
+      return;
+    }
+
+    // 检查名称是否与其他专题冲突
+    const nameConflict = await queryOne('SELECT id FROM topics WHERE name = ? AND id != ?', [name, topicId]);
+    if (nameConflict) {
+      res.status(400).json({
+        code: 400,
+        message: '专题名称已存在'
+      });
+      return;
+    }
+
+    await execute(`
+      UPDATE topics 
+      SET name = ?, description = ?, cover_image = ?, sort_order = ?, status = ?, updated_at = datetime('now')
+      WHERE id = ?
+    `, [name, description || '', cover_image || '', sort_order || 0, status || 'active', topicId]);
+
+    res.json({
+      code: 200,
+      message: '专题更新成功'
+    });
+  } catch (error) {
+    console.error('更新专题失败:', error);
+    res.status(500).json({
+      code: 500,
+      message: '服务器内部错误'
+    });
+  }
+});
+
+/**
+ * 删除专题（管理员功能）
+ * DELETE /api/topics/:id
+ */
+router.delete('/:id', authenticateToken, async (req: Request, res: Response): Promise<void> => {
+  try {
+    const topicId = parseInt(req.params.id);
+
+    if (isNaN(topicId)) {
+      res.status(400).json({
+        code: 400,
+        message: '无效的专题ID'
+      });
+      return;
+    }
+
+    // 检查专题是否存在
+    const existingTopic = await queryOne('SELECT id FROM topics WHERE id = ?', [topicId]);
+    if (!existingTopic) {
+      res.status(404).json({
+        code: 404,
+        message: '专题不存在'
+      });
+      return;
+    }
+
+    // 软删除：将状态设置为 inactive
+    await execute(`
+      UPDATE topics 
+      SET status = 'inactive', updated_at = datetime('now')
+      WHERE id = ?
+    `, [topicId]);
+
+    res.json({
+      code: 200,
+      message: '专题删除成功'
+    });
+  } catch (error) {
+    console.error('删除专题失败:', error);
+    res.status(500).json({
+      code: 500,
+      message: '服务器内部错误'
+    });
+  }
+});
+
+/**
+ * 获取视频的专题列表
+ * GET /api/topics/video/:videoId
+ */
+router.get('/video/:videoId', optionalAuth, async (req: Request, res: Response): Promise<void> => {
+  try {
+    const videoId = parseInt(req.params.videoId);
+
+    if (isNaN(videoId)) {
+      res.status(400).json({
+        code: 400,
+        message: '无效的视频ID'
+      });
+      return;
+    }
+
+    const topics = await query(`
+      SELECT 
+        t.id,
+        t.name,
+        t.description,
+        t.cover_image,
+        t.sort_order
+      FROM topics t
+      INNER JOIN video_topics vt ON t.id = vt.topic_id
+      WHERE vt.video_id = ? AND t.status = 'active'
+      ORDER BY t.sort_order ASC, t.name ASC
+    `, [videoId]);
+
+    res.json({
+      code: 200,
+      message: '获取成功',
+      data: topics
+    });
+  } catch (error) {
+    console.error('获取视频专题失败:', error);
+    res.status(500).json({
+      code: 500,
+      message: '服务器内部错误'
+    });
+  }
+});
+
+export default router;