Create Chat API

IT18021080/Telemedicine-Chat-App/backend/controllers/chatControllers.js

+const asyncHandler = require("express-async-handler");
+const Chat = require("../models/chatModel");
+const User = require("../models/userModel");
+
+const accessChat = asyncHandler(async (req, res) => {
+    //creating and fetching one to one chat
+    const { userId } = req.body;
+
+    if (!userId) {
+        console.log("UserId param not sent with request");
+        return res.sendStatus(400);
+    }
+
+    var isChat = await Chat.find({
+        isGroupChat: false,
+        $and: [
+            { users: { $elemMatch: { $eq: req.user._id } } },
+            { users: { $elemMatch: { $eq: userId } } },
+            
+        ],
+    }).populate("users", "-password")
+        .populate("latestMessage");
+    
+    isChat = await User.populate(isChat, {
+        path: "latestMessage.sender",
+        select: "name pic email",
+    });
+
+    if (isChat.length > 0) {
+        res.send(isChat[0]);
+    } else {
+        var chatData = {
+            chatName: "sender",
+            isGroupChat: false,
+            users: [req.user._id, userId],
+            
+        };
+
+        try {
+            const createdChat = await Chat.create(chatData);
+
+            const FullChat = await Chat.findOne({ _id: createdChat._id }).populate(
+                "users",
+                "-password"
+            );
+
+            res.status(200).send(FullChat);
+        } catch (error) {
+            res.status(400);
+            throw new Error(error.message);
+        }
+    }
+});
+
+module.exports = { accessChat };
\ No newline at end of file

IT18021080/Telemedicine-Chat-App/backend/routes/chatRoutes.js

 const express = require("express");
+const { accessChat } = require("../controllers/chatControllers");
 const { protect } = require("../middleware/authMiddleware");
 
 
+
 //create router object
 const router = express.Router();
 
 //only login user can access this route.
 
-//router.route("/").post(protect, accessChat);
+router.route("/").post(protect, accessChat);
 //router.route("/").get(protect, fetchChats);
 //router.route("/group").post(protect, createGroupChat);  //create group
 //router.route("/rename").put(protect, renameGroup); //update group