Nachrichten: kein Pushover wenn Empfänger aktiv im Chat

backend/src/db.js

@@ -254,6 +254,8 @@ if (!userCols2.includes('last_active_at'))
   db.exec("ALTER TABLE users ADD COLUMN last_active_at DATETIME DEFAULT NULL");
 if (!userCols2.includes('hidden'))
   db.exec("ALTER TABLE users ADD COLUMN hidden INTEGER NOT NULL DEFAULT 0");
+if (!userCols2.includes('chat_active_at'))
+  db.exec("ALTER TABLE users ADD COLUMN chat_active_at DATETIME DEFAULT NULL");
 
 // ── Login-Sicherheit ──────────────────────────────────────────────────────────
 // Spalten für Account-Lockout in users-Tabelle

backend/src/tools/nachrichten/routes.js

@@ -38,6 +38,17 @@ router.post('/keys', authenticate, (req, res) => {
 });
 
 // ── Users ─────────────────────────────────────────────────────────────────────
+// Presence: User ist gerade aktiv im Chat
+router.post('/presence', authenticate, (req, res) => {
+  const { active } = req.body;
+  if (active) {
+    db.prepare("UPDATE users SET chat_active_at=datetime('now','localtime') WHERE id=?").run(req.user.id);
+  } else {
+    db.prepare("UPDATE users SET chat_active_at=NULL WHERE id=?").run(req.user.id);
+  }
+  res.json({ ok: true });
+});
+
 router.get('/users', authenticate, (req, res) => {
   const me      = req.user.id;
   const isAdmin = req.user.role === 'admin';
@@ -120,8 +131,14 @@ router.post('/messages/:userId', authenticate, async (req, res) => {
   const senderName = db.prepare('SELECT username FROM users WHERE id = ?').get(me)?.username || 'Jemand';
   const pushover   = db.prepare('SELECT * FROM pushover_settings WHERE user_id = ?').get(recipId);
   if (pushover) {
-    await sendPushover(pushover.user_key, pushover.app_token, 'DickenDock', `Neue Nachricht von ${senderName}`,
+    // Kein Push wenn Empfänger gerade im Chat ist (aktiv in letzten 45 Sekunden)
-      { retry: pushover.retry, expire: pushover.expire });
+    const presence = db.prepare(`
+      SELECT chat_active_at FROM users WHERE id=? AND chat_active_at > datetime('now','localtime','-45 seconds')
+    `).get(recipId);
+    if (!presence) {
+      await sendPushover(pushover.user_key, pushover.app_token, 'DickenDock', `Neue Nachricht von ${senderName}`,
+        { retry: pushover.retry, expire: pushover.expire });
+    }
   }
 
   res.json({ id: result.lastInsertRowid });

frontend/src/tools/nachrichten.jsx

@@ -95,6 +95,40 @@ export default function Nachrichten({ toast, mobile }) {
   const bottomRef = useRef(null);
   const pollRef   = useRef(null);
   const pickerRef = useRef(null);
+  const heartbeatRef = useRef(null);
+
+  // Presence Heartbeat: solange Nachrichten offen + Tab sichtbar → aktiv
+  useEffect(() => {
+    const sendPresence = (active) => api('/tools/nachrichten/presence', { method:'POST', body:{ active } }).catch(()=>{});
+
+    const start = () => {
+      if (document.visibilityState === 'visible') {
+        sendPresence(true);
+        heartbeatRef.current = setInterval(() => {
+          if (document.visibilityState === 'visible') sendPresence(true);
+        }, 30000);
+      }
+    };
+
+    const onVisibility = () => {
+      if (document.visibilityState === 'visible') {
+        sendPresence(true);
+        if (!heartbeatRef.current) heartbeatRef.current = setInterval(() => sendPresence(true), 30000);
+      } else {
+        sendPresence(false);
+        clearInterval(heartbeatRef.current);
+        heartbeatRef.current = null;
+      }
+    };
+
+    start();
+    document.addEventListener('visibilitychange', onVisibility);
+    return () => {
+      sendPresence(false);
+      clearInterval(heartbeatRef.current);
+      document.removeEventListener('visibilitychange', onVisibility);
+    };
+  }, []);
 
   useEffect(() => {
     if (!showPicker) return;