what issue u made and what changes u did in the exixting code . can u explain u did that and the logic
Let me walk through the key issues I found in your chat component and explain the logic behind each fix:
Original Problem: The WebSocket connection was being established, but messages weren't being sent/received properly. This was happening because:
Changes Made:
// BEFORE: Two separate message handlers with duplicate code
const onSocketMessage = async (event) => { /* duplicate code */ };
const onWsMessage = async (event) => { /* duplicate code */ };
// AFTER: Consolidated into one shared handler
const handleWebSocketMessage = async (event) => { /* single implementation */ };// BEFORE: Immediate username sending after connection
wsInstance.current.onopen = () => {
setConnectedState(true);
wsInstance.current?.send(JSON.stringify({ type: "setUsername", from: user?.user_id }));
};
// AFTER: Added delay to ensure connection is stable
wsInstance.current.onopen = () => {
setConnectedState(true);
setTimeout(() => {
wsInstance.current?.send(JSON.stringify({ type: "setUsername", from: user?.user_id }));
console.log("Sent username to socket:", user?.user_id);
}, 500);
};Logic Behind the Fix:
Original Problem: When creating a new chat, the UI wasn't updating properly to show the new conversation. This happened because:
window.location.href to redirect, which causes a full page reloadChanges Made:
// BEFORE: Redirect after chat creation
if (response?.success) {
window.location.href = '/chat'
}
// AFTER: Set chat data and update UI without page reload
if (response?.chat_id) {
localStorage.setItem("chat_id", response?.chat_id)
setLocalStorageChatId(response?.chat_id)
// Find the user details to set chat data
const recipient = userDetails?.find((user) => user.user_id === slug)
if (recipient) {
const newChatData = {
from: user?.user_id,
to: slug,
path: recipient?.profile_image?.path,
first_name: recipient?.first_name || "",
last_name: recipient?.last_name || "",
last_message_time: new Date().toISOString(),
chat_id: Number(response?.chat_id),
}
setChatData(newChatData)
// Refresh the chat list to show the new chat
getChatList()
}
}Logic Behind the Fix:
Original Problem:
The startChat function had state updates that could cause race conditions:
Changes Made:
// BEFORE: Scattered state updates
const startChat = (toUserId, path, first_name, last_name, last_message_time, chat_id) => {
setChatMessage([]);
getMessageData(1, true, chat_id);
getChatList();
setUserList(prevUserList => /* update logic */);
localStorage.setItem("chat_id", chat_id);
setChatData(newChatData);
setCurrentPage(1);
};
// AFTER: Organized state updates with validation
const startChat = (toUserId, path, first_name, last_name, last_message_time, chat_id) => {
if (!user?.user_id || !toUserId || !chat_id) {
console.error("Missing required data for chat:", { userId: user?.user_id, toUserId, chatId: chat_id });
return;
}
// Reset message state
setChatMessage([]);
// Set chat ID in localStorage
localStorage.setItem("chat_id", chat_id);
setLocalStorageChatId(chat_id);
// Set chat data with proper validation
const newChatData = {
from: user?.user_id,
to: toUserId,
path: path || "",
first_name: first_name || "",
last_name: last_name || "",
last_message_time: last_message_time || new Date().toISOString(),
chat_id: Number(chat_id),
};
setChatData(newChatData);
// Reset unread count for this chat
setUserList((prevUserList) => /* update logic */);
// Reset pagination and fetch messages
setCurrentPage(1);
getMessageData(1, true, chat_id);
};Logic Behind the Fix:
|| to prevent undefined errorsOriginal Problem: The code had minimal error handling and didn't check for null/undefined values:
Changes Made:
// BEFORE: No validation in userDataFetch
const userDataFetch = async () => {
var headers = { /* headers */ }
// No check if user?.token exists
try {
const userData = await UseApi(/* params */);
setUserDetails(userData?.records);
} catch (error) {
console.log("errors", error);
}
};
// AFTER: Added validation and better error handling
const userDataFetch = async () => {
if (!user?.token) {
console.error("No user token available");
return;
}
var headers = { /* headers */ }
try {
setLoading(true);
const userData = await UseApi(/* params */);
setUserDetails(userData?.records || []);
} catch (error) {
console.error("Error fetching user data:", error);
setUserDetails([]);
} finally {
setLoading(false);
}
};Logic Behind the Fix:
|| operator to provide fallback valuesfinally blocks to ensure loading states are resetOriginal Problem: Users had no way to know if they were connected to the WebSocket server:
Changes Made:
// ADDED: Connection status indicator in the UI
<div>
<span
className={`connection-status ${isWsConnected ? "text-success" : "text-danger"}`}
style={{ fontSize: "11px" }}
>
{isWsConnected ? "Connected" : "Reconnecting..."}
</span>
</div>Logic Behind the Fix:
Original Problem: The code was trying to access properties that might be undefined:
`https://ui-avatars.com/api/?name=${encodeURIComponent(user?.first_name?.charAt(0).toUpperCase())}&background=0c3a83&color=ffffff&size=25`If first_name was undefined, this would cause an error.
Changes Made:
// AFTER: Added fallback for undefined values
`https://ui-avatars.com/api/?name=${encodeURIComponent(user?.first_name?.charAt(0).toUpperCase()) || "/placeholder.svg"}&background=0c3a83&color=ffffff&size=25`Logic Behind the Fix:
Original Problem: There was a duplicate send button in the UI that didn't have any functionality:
<button onClick={() => { console.log("Send button clicked") }} />
<button onClick={() => { /* actual send button code */ }} className="btn send-btn" type="button">Changes Made: Removed the duplicate button that had no functionality.
Logic Behind the Fix:
These changes work together to create a more robust chat application that handles edge cases better and provides a smoother user experience.
how it fetch the to user id , where is the logic
There are two main flows for how the recipient ID (to user ID) is fetched in the chat component:
When a user clicks on an existing chat in the list, here's the logic flow:
const getChatList = async () => {
// API call to fetch chat list
const userListData = await UseApi(url + "/modules/chat/list", "POST", headers, payload, setLoading, router);
setUserList(userListData?.records);
}{userList?.flatMap((usersdata) =>
usersdata?.chat_members?.map((member, i) => (
<li
key={member?.id}
onClick={() => {
startChat(
member?.id, // This is the to_user_id (recipient)
member?.image,
member?.first_name,
member?.last_name,
usersdata?.last_message_time,
usersdata?.chat_id,
)
}}
>
{/* Chat item content */}
</li>
))
)}startChat function is called with the member's ID as the recipient ID:const startChat = (toUserId, path, first_name, last_name, last_message_time, chat_id) => {
// toUserId is the recipient ID passed from the chat list item
// Create chat data object with the recipient ID
const newChatData = {
from: user?.user_id, // Current user's ID
to: toUserId, // Recipient's ID
path: path || "",
first_name: first_name || "",
last_name: last_name || "",
last_message_time: last_message_time || new Date().toISOString(),
chat_id: Number(chat_id),
};
setChatData(newChatData);
// ... other operations
}When a user creates a new chat via the "New Chat" dropdown:
const userDataFetch = async () => {
// API call to fetch user list
const userData = await UseApi(`${url}/modules/users/list`, "POST", headers, payload, setLoading, router);
setUserDetails(userData?.records || []);
}{userDetails?.map((user, i) => (
<li
onClick={() => createChat(user?.user_id)} // Pass user_id to createChat
className="d-flex align-items-center gap-3 chat-drop-li"
key={i}
>
{/* User item content */}
</li>
))}createChat function is called with the selected user's ID:const createChat = async (slug) => { // slug is the recipient's user_id
// Create payload with current user and recipient
const payload = {
"chat_members": [slug, user?.user_id] // Array with recipient ID and current user ID
};
// API call to create chat
const response = await UseApi(url + '/modules/chat/create', 'POST', headers, payload, setLoading, router);
if (response?.chat_id) {
// Find the recipient details from userDetails state
const recipient = userDetails?.find((user) => user.user_id === slug);
if (recipient) {
// Create chat data with recipient ID
const newChatData = {
from: user?.user_id,
to: slug, // Recipient ID
path: recipient?.profile_image?.path,
first_name: recipient?.first_name || "",
last_name: recipient?.last_name || "",
last_message_time: new Date().toISOString(),
chat_id: Number(response?.chat_id),
};
setChatData(newChatData);
}
}
}For Existing Chats:
member.id in the chat list/modules/chat/list API endpointFor New Chats:
user.user_id in the user list dropdown/modules/users/list API endpointuserDetails stateStorage and Usage:
chatData.to propertyconst messageData = {
message_text: input.trim(),
to_user_id: chatData.to, // Recipient ID
from_user_id: chatData.from,
chat_id: chatData.chat_id,
created_at: new Date().toISOString(),
};This two-flow approach allows users to either continue existing conversations or start new ones with different recipients.
WHY THERE WAS A ISSUE IN FETCHING THE TO USER ID IN THE PREVIOUS CODE I HAVE GIVEN