Function loadMessages

appcheck/hosting/src/index.js:122–138

()

 
 // Loads chat messages history and listens for upcoming ones.
 function loadMessages() {
   // Create the query to load the last 12 messages and listen for new ones.
   const recentMessagesQuery = query(collection(getFirestore(), 'messages'), orderBy('timestamp', 'desc'), limit(12));
   
   // Start listening to the query.
   onSnapshot(recentMessagesQuery, function(snapshot) {
     snapshot.docChanges().forEach(function(change) {
       if (change.type === 'removed') {
         deleteMessage(change.doc.id);
       } else {
         var message = change.doc.data();
         displayMessage(change.doc.id, message.timestamp, message.name,
                       message.text, message.profilePicUrl, message.imageUrl);
       }
     });
   });
 }
 
 // Saves a new message containing an image in Firebase.
 // This first saves the image in Firebase storage.