feat: 참가자 생성 시 약속 최대 참가자 수를 넘어선다면 에러가 발생하도록 예외처리 추가

controllers/meeting.js

@@ -5,6 +5,7 @@ const {
   getMeetingById,
   getMeetingWithParticipantsById,
   getMeetingWithParticipantsAndSchedulesById,
+  getNumOfParticipantsByMeetingId,
   closeMeetingById,
 } = require('../services/meeting');
 const {
@@ -44,14 +45,6 @@ async function getParticipantByNameAndMeetingId(name, meetingId) {
   return participant;
 }
 
-async function getNumOfParticipantsByMeetingId(meetingId) {
-  return Participant.count({
-    where: {
-      MeetingId: meetingId,
-    },
-  });
-}
-
 async function validatePasswordIsMatched(requestPassword, exPassword) {
   if (!requestPassword) {
     throw createPasswordIsNullError();

controllers/participant.js

 const bcrypt = require('bcrypt');
-const { createPasswordIsNullError } = require('../errors/meetingErrors');
+const {
+  getMeetingById,
+  getNumOfParticipantsByMeetingId,
+} = require('../services/meeting');
+const {
+  createPasswordIsNullError,
+  createMaxParticipantsError,
+} = require('../errors/meetingErrors');
 const {
   createParticipantIsAlreadyExistError,
   createParticipantNotFoundError,
@@ -65,6 +72,13 @@ exports.createParticipant = async (req, res, next) => {
   const reqPassword = req.body.password || null;
   const reqEmail = req.body.email || null;
   try {
+    const meeting = await getMeetingById(meetingId);
+    const currentParticipants =
+      await getNumOfParticipantsByMeetingId(meetingId);
+    if (currentParticipants >= meeting.maxParticipants) {
+      throw createMaxParticipantsError();
+    }
+
     const existingParticipant = await findParticipantByMeetingIdAndName(
       meetingId,
       reqName,

errors/meetingErrors.js

@@ -29,3 +29,11 @@ exports.createMostConfirmedTimeNotFoundError = () => {
   error.status = 404;
   return error;
 };
+
+exports.createMaxParticipantsError = () => {
+  const error = new Error(
+    '설정된 최대 참가자가 모두 참여했습니다. 더 이상 새로 참가하실 수 없습니다.',
+  );
+  error.status = 409;
+  return error;
+};

services/meeting.js

@@ -50,6 +50,13 @@ const getMeetingWithParticipantsAndSchedulesById = async (meetingId) => {
   return meeting;
 };
 
+const getNumOfParticipantsByMeetingId = async (meetingId) =>
+  Participant.count({
+    where: {
+      MeetingId: meetingId,
+    },
+  });
+
 function validateMeetingIsNotClosed(meeting) {
   if (meeting.isClosed === true) {
     throw createMeetingIsAlreadyClosedError();
@@ -75,5 +82,6 @@ module.exports = {
   getMeetingById,
   getMeetingWithParticipantsById,
   getMeetingWithParticipantsAndSchedulesById,
+  getNumOfParticipantsByMeetingId,
   closeMeetingById,
 };