Frontend/src/pages/Messages.tsx (1)

236-398: Remove the hidden legacy messaging UI code.

The old messaging interface is being hidden via CSS class hidden but the entire codebase remains. This creates technical debt and potential confusion.

Consider removing the legacy messaging code entirely rather than hiding it:

-      {/* Old Code */}
-      <main className="flex-1 hidden">
-        {/* ... entire old messaging UI ... */}
-      </main>

If you need to keep it for reference during development, consider using feature flags or moving it to a separate branch rather than shipping hidden code to production.

Backend/app/services/redis_client.py (1)

3-3: Flag production readiness concern for Redis configuration

While the hardcoded Redis connection parameters are acceptable for development (as noted in previous feedback), consider implementing environment variable configuration for production deployment to support different Redis instances and credentials.

Future production enhancement could include:

-redis_client = redis.Redis(host="localhost", port=6379, decode_responses=True)
+redis_client = redis.Redis(
+    host=os.getenv("REDIS_HOST", "localhost"),
+    port=int(os.getenv("REDIS_PORT", "6379")),
+    password=os.getenv("REDIS_PASSWORD"),
+    decode_responses=True
+)

Frontend/src/main.tsx (1)

9-9: Clean up commented code.

Based on the retrieved learning that StrictMode should be disabled when using WebSockets, consider removing the commented lines entirely or using conditional logic for development vs production environments.

-  // <StrictMode>
   <Provider store={store}>
     <App />
   </Provider>
-  // </StrictMode>,

Also applies to: 13-13

Backend/docker-compose.yml (1)

1-14: Consider adding Redis security configuration for production readiness.

While the current configuration works for development, consider adding authentication and other security measures when moving to production:

 services:
   redis:
-    image: redis:latest
+    image: redis:7-alpine
     container_name: redis
     ports:
       - "6379:6379"
     volumes:
       - redis_data:/data
     restart: unless-stopped
-    command: redis-server --appendonly yes
+    command: redis-server --appendonly yes --requirepass ${REDIS_PASSWORD:-devpassword}
+    environment:
+      - REDIS_PASSWORD=${REDIS_PASSWORD:-devpassword}

Frontend/src/components/chat/chat.tsx (1)

8-42: Enhance UX with loading states and disconnect functionality.

The component lacks loading states during connection and provides no way to disconnect once connected.

Consider adding:

1. Loading state while connecting
2. Disconnect functionality
3. Error handling for connection failures
4. Better user feedback

export default function Chat() {
  const [inputUserId, setInputUserId] = useState<string | null>(null);
  const [userId, setUserId] = useState<string | null>(null);
+ const [isConnecting, setIsConnecting] = useState(false);
+ const [connectionError, setConnectionError] = useState<string | null>(null);

+ const handleConnect = async () => {
+   if (!inputUserId?.trim()) return;
+   setIsConnecting(true);
+   setConnectionError(null);
+   try {
+     // Add connection logic here
+     setUserId(inputUserId.trim());
+   } catch (error) {
+     setConnectionError('Failed to connect');
+   } finally {
+     setIsConnecting(false);
+   }
+ };

+ const handleDisconnect = () => {
+   setUserId(null);
+   setInputUserId(null);
+ };

Frontend/src/components/chat/message-input.tsx (2)

20-30: Add error handling and loading state for message sending.

The component doesn't handle potential errors from the sendMessage operation or provide user feedback during sending.

Consider adding error handling and loading state:

+  const [isSending, setIsSending] = useState(false);
+  const [sendError, setSendError] = useState<string | null>(null);

-  const handleSendMessage = () => {
+  const handleSendMessage = async () => {
    if (message.trim() === "") return;
    if (!receiverId) {
      console.warn("No receiver selected");
      return;
    }
+    
+    setIsSending(true);
+    setSendError(null);
+    
+    try {
-      sendMessage(receiverId, message);
+      await sendMessage(receiverId, message);
      setMessage("");
      // ... scroll logic ...
+    } catch (error) {
+      setSendError("Failed to send message");
+      console.error("Send message error:", error);
+    } finally {
+      setIsSending(false);
+    }
  };

---

47-52: Add accessibility improvements and visual feedback.

The send button lacks proper accessibility attributes and doesn't show loading state.

Enhance the button with accessibility and loading state:

        <Button
          className="bg-purple-700 hover:bg-purple-800 text-white"
          onClick={handleSendMessage}
+          disabled={isSending || !message.trim() || !receiverId}
+          aria-label="Send message"
        >
-          <Send className="h-4 w-4" />
+          {isSending ? (
+            <div className="animate-spin h-4 w-4 border-2 border-white border-t-transparent rounded-full" />
+          ) : (
+            <Send className="h-4 w-4" />
+          )}
        </Button>

Backend/app/db/seed.py (2)

1-1: Remove unused imports.

The datetime and timezone imports are not used anywhere in the code.

-from datetime import datetime, timezone

---

35-50: Remove unnecessary else clause after continue.

The else clause is unnecessary after a continue statement and increases indentation depth.

             if existing_user:
                 continue
-            else:
-                # Create new user
-                user = User(
-                    id=user_data["id"],
-                    username=user_data["username"],
-                    email=user_data["email"],
-                    password_hash=user_data[
-                        "password"
-                    ],  # Using plain password directly
-                    role=user_data["role"],
-                    bio=user_data["bio"],
-                )
-                session.add(user)
-                print(f"Created user: {user_data['email']}")
+            
+            # Create new user
+            user = User(
+                id=user_data["id"],
+                username=user_data["username"],
+                email=user_data["email"],
+                password_hash=user_data["password"],
+                role=user_data["role"],
+                bio=user_data["bio"],
+            )
+            session.add(user)
+            print(f"Created user: {user_data['email']}")

Frontend/src/components/chat/chat-list.tsx (1)

20-25: Add dependency array to prevent unnecessary re-fetches.

The fetchChatList call should include fetchChatList in the dependency array to follow React's exhaustive-deps rule, even though it's likely stable.

   useEffect(() => {
     setLoading(true);
     fetchChatList().finally(() => {
       setLoading(false);
     });
-  }, []);
+  }, [fetchChatList]);

Frontend/src/components/video-calling/call-starter.tsx (1)

19-20: Remove commented out code.

The commented out sendVideoSignal call should be removed as it's not being used and clutters the codebase.

   const handleStartCall = () => {
     setIsOpen(true);
-    // Initiate the call by sending an offer signal
-    // sendVideoSignal(targetUserId, "VIDEO_OFFER", {}); // Empty payload for offer initiation
     startCall(targetUserId);
   };

Frontend/src/components/chat/message-item.tsx (1)

8-53: Consider memoizing the component for performance.

Since this component renders frequently in chat lists, consider using React.memo to prevent unnecessary re-renders when props haven't changed.

-export default function MessageItem({ message }: { message: Message }) {
+export default React.memo(function MessageItem({ message }: { message: Message }) {
   return (
     // ... component content
   );
-}
+});

Frontend/src/components/chat/chat-item.tsx (1)

27-31: Optimize Redux selector to prevent unnecessary re-renders.

The inline selector function is recreated on every render. Consider using useCallback or useMemo to memoize the selector logic.

+  const lastMessage = useSelector((state: RootState) => {
+    if (!chat.messageIds.length) return null;
+    const lastMessageId = chat.messageIds[chat.messageIds.length - 1];
+    return state.chat.messages[lastMessageId]?.message || null;
+  });
-  const lastMessage = useSelector((state: RootState) =>
-    chat.messageIds.length
-      ? state.chat.messages[chat.messageIds[chat.messageIds.length - 1]].message
-      : null
-  );

Frontend/src/types/chat.ts (1)

1-4: Add JSDoc documentation for interface clarity.

The MessagesReadResponse interface should have documentation explaining its purpose and usage context.

+/**
+ * Represents a messages read event payload indicating all messages in a chat have been marked as read
+ */
export interface MessagesReadResponse {
  chatListId: string;
  eventType: "MESSAGES_READ";
}

Frontend/src/lib/useVideocall.tsx (2)

143-158: Complete the accept/reject call functionality.

The commented-out accept/reject call logic should either be implemented or removed to avoid confusion.

These functions appear to be placeholders for call acceptance/rejection logic. Would you like me to help implement these functions or should they be removed if not needed for the current implementation?

---

28-28: Remove debug logging in production code.

The console.log statement for debugging should be removed or replaced with proper logging mechanism for production.

-      console.log("Sending WebSocket message:", message); // Log the stringified message
+      // Consider using a proper logging service instead of console.log

Backend/app/routes/chat.py (1)

106-107: Enhance error messages for better debugging

The validation error messages could be more descriptive to help with debugging.

     if not message_id:
-        raise HTTPException(status_code=400, detail="message_id is required")
+        raise HTTPException(status_code=400, detail="message_id parameter is required and cannot be empty")
     
     if not chat_list_id:
-        raise HTTPException(status_code=400, detail="chat_list_id is required")
+        raise HTTPException(status_code=400, detail="chat_list_id parameter is required and cannot be empty")

Also applies to: 121-122

Backend/app/services/chat_services.py (2)

16-19: Consider distributed connection tracking for scalability.

The in-memory active_connections dictionary won't scale across multiple server instances. Each server would only track its own connections, causing issues with user presence and message delivery in a distributed deployment.

Consider using Redis or another distributed store to track active connections across all servers. This aligns with the PR objective of building a scalable video calling and chat system.

---

288-296: Simplify complex nested ternary for better readability.

The nested ternary operator is difficult to understand. Consider refactoring for clarity:

-        receiver_id = (
-            (
-                messages[0].receiver_id
-                if messages[0].sender_id == user_id
-                else messages[0].sender_id
-            )
-            if len(messages)
-            else None
-        )
+        receiver_id = None
+        if messages:
+            first_message = messages[0]
+            receiver_id = first_message.receiver_id if first_message.sender_id == user_id else first_message.sender_id

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

Learnt from: muntaxir4
PR: AOSSIE-Org/InPactAI#56
File: Backend/app/services/redis_client.py:1-4
Timestamp: 2025-05-07T21:28:06.358Z
Learning: Hardcoded Redis connection parameters in Backend/app/services/redis_client.py are intentional during development, with plans to implement environment variable configuration later during production preparation.

Learnt from: muntaxir4
PR: AOSSIE-Org/InPactAI#56
File: Backend/app/services/redis_client.py:1-4
Timestamp: 2025-05-07T21:28:06.358Z
Learning: Hardcoded Redis connection parameters in Backend/app/services/redis_client.py are intentional during development, with plans to implement environment variable configuration later during production preparation.

Learnt from: muntaxir4
PR: AOSSIE-Org/InPactAI#56
File: Backend/app/services/redis_client.py:1-4
Timestamp: 2025-05-07T21:28:06.358Z
Learning: Hardcoded Redis connection parameters in Backend/app/services/redis_client.py are intentional during development, with plans to implement environment variable configuration later during production preparation.

Learnt from: muntaxir4
PR: AOSSIE-Org/InPactAI#56
File: Frontend/src/main.tsx:0-0
Timestamp: 2025-05-07T21:28:03.631Z
Learning: StrictMode in React should be disabled when using WebSockets in the application as it can cause unwanted disconnections due to the double-mounting behavior in development mode.