Add character limit validation for question description

Author: jolynloh

backend/question-service/src/controllers/questionController.ts

@@ -1,7 +1,11 @@
 import { Request, Response } from "express";
 import Question from "../models/Question.ts";
 import { checkIsExistingQuestion } from "../utils/utils.ts";
-import { DUPLICATE_QUESTION_RESPONSE_MESSAGE } from "../utils/constants.ts";
+import {
+  DUPLICATE_QUESTION_RESPONSE_MESSAGE,
+  QN_DESC_EXCEED_CHAR_LIMIT_RESPONSE_MESSAGE,
+  QN_DESC_CHAR_LIMIT,
+} from "../utils/constants.ts";
 
 export const createQuestion = async (
   req: Request,
@@ -18,6 +22,13 @@ export const createQuestion = async (
       return;
     }
 
+    if (description.length > QN_DESC_CHAR_LIMIT) {
+      res.status(400).json({
+        message: QN_DESC_EXCEED_CHAR_LIMIT_RESPONSE_MESSAGE,
+      });
+      return;
+    }
+
     const newQuestion = new Question({
       title,
       description,
@@ -42,7 +53,7 @@ export const updateQuestion = async (
 ): Promise<void> => {
   try {
     const { id } = req.params;
-    const { title } = req.body;
+    const { title, description } = req.body;
 
     const currentQuestion = await Question.findById(id);
     if (!currentQuestion) {
@@ -58,6 +69,13 @@ export const updateQuestion = async (
       return;
     }
 
+    if (description && description.length > QN_DESC_CHAR_LIMIT) {
+      res.status(400).json({
+        message: QN_DESC_EXCEED_CHAR_LIMIT_RESPONSE_MESSAGE,
+      });
+      return;
+    }
+
     const updatedQuestion = await Question.findByIdAndUpdate(id, req.body, {
       new: true,
     });

backend/question-service/src/utils/constants.ts

@@ -1,2 +1,7 @@
+export const QN_DESC_CHAR_LIMIT = 6000;
+
+export const QN_DESC_EXCEED_CHAR_LIMIT_RESPONSE_MESSAGE =
+  "Question description must be at most 6000 characters";
+
 export const DUPLICATE_QUESTION_RESPONSE_MESSAGE =
   "Duplicate question: A question with the same title already exists.";