v1.7.6/auto leave and leave message

functions/modules/leaveRoom.js

@@ -2,6 +2,14 @@ const admin = require('firebase-admin');
 
 module.exports = async (req, res) => {
   console.log('Requested Leave - UID - ', req.params.uid, '\n\tRoom - ', req.params.rid);
+  const userName = await admin
+    .firestore()
+    .collection('rooms')
+    .doc(req.params.rid)
+    .collection('users')
+    .doc(req.params.uid)
+    .get()
+    .then((userSnap) => userSnap.data().name);
   await admin
     .firestore()
     .collection('rooms')
@@ -15,5 +23,16 @@ module.exports = async (req, res) => {
         err
       )
     );
+  admin
+    .firestore()
+    .collection('rooms')
+    .doc(req.params.rid)
+    .collection('messages')
+    .add({
+      uid: '<system>',
+      time: new Date(),
+      name: '',
+      text: `${userName} left the party.`,
+    });
   res.status(200).send({ message: 'Left the party' });
 };