Update user model and routes, and fix login functionality

backend/src/models/user.ts

@@ -5,6 +5,7 @@ interface IUser extends Document {
   email: string;
   password: string;
   createdAt: Date;
+  userId: string;
 }
 
 interface IUserModel extends Model<IUser> {
@@ -16,6 +17,7 @@ const userSchema = new Schema<IUser>({
   email: { type: String, required: true, unique: true },
   password: { type: String, required: true },
   createdAt: { type: Date, default: Date.now },
+  userId: { type: String, required: true },
 });
 
 userSchema.statics.findAll = function (): Promise<IUser[]> {

backend/src/routes/userRoutes.ts

@@ -32,6 +32,7 @@ router.post("/register", async (req: Request, res: Response) => {
       email,
       password: hashedPassword,
       createdAt: new Date(),
+      userId: Math.random().toString(36).substring(2) + Date.now().toString(36),
     });
 
     res.status(201).json(newUser);
@@ -80,11 +81,13 @@ router.post("/login", async (req: Request, res: Response) => {
       return res.status(401).json({ message: "Invalid password" });
     }
     const token = jwt.sign(
-      { id: user?.id, email: user?.username },
+      { id: user?.userId, email: user?.username },
       process.env.JWT_SECRET || "",
       { expiresIn: "7d" }
     );
-    res.status(200).json({ message: "Login successful", token });
+    res
+      .status(200)
+      .json({ message: "Login successful", token, userId: user.userId });
   } catch (error: any) {
     res.status(500).json({ message: error.message });
   }