fix: 优化docker 镜像

server/routes.js

@@ -62,6 +62,46 @@ router.get('/situation', (req, res) => {
   }
 })
 
+// 来访统计：记录 IP，返回在看/累积
+function getClientIp(req) {
+  const forwarded = req.headers['x-forwarded-for']
+  if (forwarded) return forwarded.split(',')[0].trim()
+  return req.ip || req.socket?.remoteAddress || 'unknown'
+}
+
+router.post('/visit', (req, res) => {
+  try {
+    const ip = getClientIp(req)
+    db.prepare(
+      "INSERT OR REPLACE INTO visits (ip, last_seen) VALUES (?, datetime('now'))"
+    ).run(ip)
+    db.prepare(
+      'INSERT INTO visitor_count (id, total) VALUES (1, 1) ON CONFLICT(id) DO UPDATE SET total = total + 1'
+    ).run()
+    const viewers = db.prepare(
+      "SELECT COUNT(*) as n FROM visits WHERE last_seen > datetime('now', '-2 minutes')"
+    ).get().n
+    const cumulative = db.prepare('SELECT total FROM visitor_count WHERE id = 1').get()?.total ?? 0
+    res.json({ viewers, cumulative })
+  } catch (err) {
+    console.error(err)
+    res.status(500).json({ viewers: 0, cumulative: 0 })
+  }
+})
+
+router.get('/stats', (req, res) => {
+  try {
+    const viewers = db.prepare(
+      "SELECT COUNT(*) as n FROM visits WHERE last_seen > datetime('now', '-2 minutes')"
+    ).get().n
+    const cumulative = db.prepare('SELECT total FROM visitor_count WHERE id = 1').get()?.total ?? 0
+    res.json({ viewers, cumulative })
+  } catch (err) {
+    console.error(err)
+    res.status(500).json({ viewers: 0, cumulative: 0 })
+  }
+})
+
 router.get('/events', (req, res) => {
   try {
     const s = getSituation()