added update lb memory function to user api

backend/api/controllers/user.js

@@ -232,6 +232,17 @@ class UserController {
       return next(e);
     }
   }
+
+  static async updateLbMemory(req, res, next) {
+    try {
+      const { uid } = req.decodedToken;
+      const { mode, mode2, language, rank } = req.body;
+      await UsersDAO.updateLbMemory(uid, mode, mode2, language, rank);
+      return res.sendStatus(200);
+    } catch (e) {
+      return next(e);
+    }
+  }
 }
 
 module.exports = UserController;

backend/api/routes/user.js

@@ -35,6 +35,13 @@ router.post(
   UserController.updateName
 );
 
+router.post(
+  "/updateLbMemory",
+  RateLimit.limit1persec,
+  authenticateRequest,
+  UserController.updateLbMemory
+);
+
 router.post(
   "/updateEmail",
   RateLimit.limit60perhour,

backend/dao/user.js

@@ -149,6 +149,24 @@ class UsersDAO {
       );
   }
 
+  static async updateLbMemory(uid, mode, mode2, language, rank) {
+    const user = await mongoDB().collection("users").findOne({ uid });
+    if (!user) throw new MonkeyError(404, "User not found", "get user");
+    if (user.lbMemory === undefined) user.lbMemory = {};
+    if (user.lbMemory[mode] === undefined) user.lbMemory[mode] = {};
+    if (user.lbMemory[mode][mode2] === undefined)
+      user.lbMemory[mode][mode2] = {};
+    user.lbMemory[mode][mode2][language] = rank;
+    return await mongoDB()
+      .collection("users")
+      .updateOne(
+        { uid },
+        {
+          $set: { lbMemory: user.lbMemory },
+        }
+      );
+  }
+
   static async checkIfPb(uid, result) {
     const user = await mongoDB().collection("users").findOne({ uid });
     if (!user) throw new MonkeyError(404, "User not found", "check if pb");