团队工作进展:

- 后端: 分享功能 API (创建/验证/下载分享链接)
- 前端: 分享弹窗组件
- 数据库: 同步状态表

backend/src/db.js

@@ -57,3 +57,16 @@ db.exec(`
 `);
 
 module.exports = db;
+
+// Sync tables (for reference - would be in migration in production)
+db.exec(`
+  CREATE TABLE IF NOT EXISTS sync_status (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    user_id INTEGER NOT NULL,
+    last_sync_time DATETIME,
+    status TEXT DEFAULT 'idle',
+    total_files INTEGER DEFAULT 0,
+    synced_files INTEGER DEFAULT 0,
+    FOREIGN KEY (user_id) REFERENCES users(id)
+  );
+`);

backend/src/index.js

@@ -2,6 +2,7 @@ const express = require('express');
 const cors = require('cors');
 const authRoutes = require('./routes/auth');
 const fileRoutes = require('./routes/files');
+const shareRoutes = require('./routes/share');
 
 const app = express();
 const PORT = process.env.PORT || 3000;
@@ -12,6 +13,7 @@ app.use(express.json());
 // Routes
 app.use('/api/auth', authRoutes);
 app.use('/api/files', fileRoutes);
+app.use('/api/share', shareRoutes);
 
 // Health check
 app.get('/api/health', (req, res) => {

backend/src/routes/share.js

@@ -0,0 +1,142 @@
+const express = require('express');
+const crypto = require('crypto');
+const db = require('../db');
+
+const router = express.Router();
+
+// Create share link
+router.post('/', (req, res) => {
+  const token = req.headers.authorization?.replace('Bearer ', '');
+  if (!token) return res.status(401).json({ error: 'No token' });
+  
+  try {
+    const jwt = require('jsonwebtoken');
+    const decoded = jwt.verify(token, process.env.JWT_SECRET || 'clouddisk-secret-key');
+    
+    const { fileId, password, expiresIn } = req.body;
+    
+    // Verify file ownership
+    const file = db.query(
+      'SELECT * FROM files WHERE id = ? AND user_id = ?',
+      [fileId, decoded.userId]
+    );
+    
+    if (file.length === 0) {
+      return res.status(404).json({ error: 'File not found' });
+    }
+    
+    // Generate share token
+    const shareToken = crypto.randomBytes(16).toString('hex');
+    
+    // Calculate expiration
+    const expiresAt = expiresIn 
+      ? new Date(Date.now() + expiresIn * 1000).toISOString()
+      : null;
+    
+    const result = db.run(
+      'INSERT INTO shares (file_id, share_token, password, expires_at) VALUES (?, ?, ?, ?)',
+      [fileId, shareToken, password || null, expiresAt]
+    );
+    
+    res.json({ 
+      success: true, 
+      shareToken,
+      shareUrl: `/share/${shareToken}`
+    });
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+// Get share info
+router.get('/:token', (req, res) => {
+  try {
+    const share = db.query(
+      'SELECT * FROM shares WHERE share_token = ?',
+      [req.params.token]
+    );
+    
+    if (share.length === 0) {
+      return res.status(404).json({ error: 'Share not found' });
+    }
+    
+    // Check expiration
+    if (share[0].expires_at && new Date(share[0].expires_at) < new Date()) {
+      return res.status(410).json({ error: 'Share expired' });
+    }
+    
+    // Get file info
+    const file = db.query(
+      'SELECT id, name, type, size FROM files WHERE id = ?',
+      [share[0].file_id]
+    );
+    
+    // Increment view count
+    db.run(
+      'UPDATE shares SET view_count = view_count + 1 WHERE id = ?',
+      [share[0].id]
+    );
+    
+    res.json({
+      file: file[0],
+      requiresPassword: !!share[0].password,
+      expiresAt: share[0].expires_at,
+      viewCount: share[0].view_count
+    });
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+// Verify share password
+router.post('/:token/verify', (req, res) => {
+  const { password } = req.body;
+  
+  const share = db.query(
+    'SELECT * FROM shares WHERE share_token = ?',
+    [req.params.token]
+  );
+  
+  if (share.length === 0) {
+    return res.status(404).json({ error: 'Share not found' });
+  }
+  
+  if (share[0].password && share[0].password !== password) {
+    return res.status(401).json({ error: 'Invalid password' });
+  }
+  
+  res.json({ success: true });
+});
+
+// Download shared file
+router.get('/:token/download', (req, res) => {
+  const share = db.query(
+    'SELECT * FROM shares WHERE share_token = ?',
+    [req.params.token]
+  );
+  
+  if (share.length === 0) {
+    return res.status(404).json({ error: 'Share not found' });
+  }
+  
+  // Check if password protected
+  if (share[0].password) {
+    const token = req.headers.authorization?.replace('Bearer ', '');
+    if (!token) {
+      return res.status(401).json({ error: 'Password required' });
+    }
+  }
+  
+  const file = db.query(
+    'SELECT * FROM files WHERE id = ?',
+    [share[0].file_id]
+  );
+  
+  if (file.length === 0) {
+    return res.status(404).json({ error: 'File not found' });
+  }
+  
+  res.download(file[0].path, file[0].name);
+});
+
+module.exports = router;