Added bookmark route in backend

backend/src/repositories/user.repo.js

@@ -1,36 +1,63 @@
-import UserModel from "../models/user.model.js"
+import UserModel from "../models/user.model.js";
 
 export const createUser = async (username, email, password) => {
-    try {
-        const createdUser = await UserModel.create({
-            username,
-            email,
-            password
-        })
+  try {
+    const createdUser = await UserModel.create({
+      username,
+      email,
+      password,
+    });
 
-        return createdUser;
-    }
-    catch(err) {
-        throw err
-    }
-}
+    return createdUser;
+  } catch (err) {
+    throw err;
+  }
+};
 
 export async function findUserByEmail(email) {
-    try{
-        const user = await UserModel.findOne({email});
-        return user;
-    }
-    catch(err){
-        throw err;
-    }
+  try {
+    const user = await UserModel.findOne({ email });
+    return user;
+  } catch (err) {
+    throw err;
+  }
 }
 
 export async function findUserById(id) {
-    try{
-        const user = await UserModel.findById(id);
-        return user;
+  try {
+    const user = await UserModel.findById(id);
+    return user;
+  } catch (err) {
+    throw err;
+  }
+}
+
+export async function addPollIdToBookmark(userId, pollId) {
+  try {
+    const updatedData = UserModel.findOneAndUpdate(
+      { _id: userId },
+      { $push: { bookmarks: pollId } },
+      { new: true }
+    );
+
+    return updatedData;
+  } catch (err) {
+    throw err;
+  }
+}
+
+
+export async function removePollIdFromBookmark(userId, pollId) {
+    try {
+        const updatedData = UserModel.findOneAndUpdate(
+            { _id: userId },
+            { $pull: { bookmarks: pollId } },
+            { new: true }
+          );
+      
+          return updatedData;
     }
-    catch(err){
+    catch{
         throw err;
     }
 }