feat: add GET /api/votes endpoint with filtering and pagination

Made-with: Cursor

backend/routes/votes.js

@@ -4,6 +4,87 @@ const db = require('../database');
 
 const router = express.Router();
 
+// Get vote history with filtering and pagination
+router.get('/', (req, res) => {
+  try {
+    let { session_id, game_id, username, vote_type, page, limit } = req.query;
+
+    page = parseInt(page) || 1;
+    limit = Math.min(parseInt(limit) || 50, 100);
+    if (page < 1) page = 1;
+    if (limit < 1) limit = 50;
+    const offset = (page - 1) * limit;
+
+    const where = [];
+    const params = [];
+
+    if (session_id !== undefined) {
+      const sid = parseInt(session_id);
+      if (isNaN(sid)) {
+        return res.status(400).json({ error: 'session_id must be an integer' });
+      }
+      where.push('lv.session_id = ?');
+      params.push(sid);
+    }
+
+    if (game_id !== undefined) {
+      const gid = parseInt(game_id);
+      if (isNaN(gid)) {
+        return res.status(400).json({ error: 'game_id must be an integer' });
+      }
+      where.push('lv.game_id = ?');
+      params.push(gid);
+    }
+
+    if (username) {
+      where.push('lv.username = ?');
+      params.push(username);
+    }
+
+    if (vote_type !== undefined) {
+      if (vote_type !== 'up' && vote_type !== 'down') {
+        return res.status(400).json({ error: 'vote_type must be "up" or "down"' });
+      }
+      where.push('lv.vote_type = ?');
+      params.push(vote_type === 'up' ? 1 : -1);
+    }
+
+    const whereClause = where.length > 0 ? 'WHERE ' + where.join(' AND ') : '';
+
+    const countResult = db.prepare(
+      `SELECT COUNT(*) as total FROM live_votes lv ${whereClause}`
+    ).get(...params);
+
+    const total = countResult.total;
+    const total_pages = Math.ceil(total / limit) || 0;
+
+    const votes = db.prepare(`
+      SELECT
+        lv.id,
+        lv.session_id,
+        lv.game_id,
+        g.title AS game_title,
+        g.pack_name,
+        lv.username,
+        CASE WHEN lv.vote_type = 1 THEN 'up' ELSE 'down' END AS vote_type,
+        lv.timestamp,
+        lv.created_at
+      FROM live_votes lv
+      JOIN games g ON lv.game_id = g.id
+      ${whereClause}
+      ORDER BY lv.timestamp DESC
+      LIMIT ? OFFSET ?
+    `).all(...params, limit, offset);
+
+    res.json({
+      votes,
+      pagination: { page, limit, total, total_pages },
+    });
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
 // Live vote endpoint - receives real-time votes from bot
 router.post('/live', authenticateToken, (req, res) => {
   try {