feat: 가장 많이 선택한 시간 조회 API 구현

controllers/meeting.js

 const bcrypt = require('bcrypt');
 const { Meeting, Participant, Schedule } = require('../models');
+const meetingRepositotry = require('../repository/meeting');
 const {
   createMeetingNotFoundError,
   createMeetingIsAlreadyClosedError,
   createPasswordNotMatchedError,
   createPasswordIsNullError,
+  createMostConfirmedTimeNotFoundError,
 } = require('../errors/meetingErrors');
 const MeetingResponse = require('../dto/response/meetingResponse');
 const MeetingWithParticipantsResponse = require('../dto/response/meetingWithParticipantsResponse');
@@ -175,6 +177,19 @@ exports.getMeetingDetailById = async (req, res, next) => {
   }
 };
 
+exports.getMostConfirmedTime = async (req, res, next) => {
+  const { purpose } = req.query;
+  if (!purpose) {
+    return res.status(400).json({ message: 'Purpose is required' });
+  }
+  try {
+    const result = await meetingRepositotry.getMostConfirmedTime(purpose);
+    return res.json(result);
+  } catch (error) {
+    return next(error);
+  }
+};
+
 function validateMeetingIsNotClosed(meeting) {
   if (meeting.isClosed === true) {
     throw createMeetingIsAlreadyClosedError();

errors/meetingErrors.js

@@ -21,3 +21,11 @@ exports.createPasswordIsNullError = () => {
   error.status = 400;
   return error;
 };
+
+exports.createMostConfirmedTimeNotFoundError = () => {
+  const error = new Error(
+    '데이터가 충분하지 않아 통계 정보를 찾을 수 없습니다.',
+  );
+  error.status = 404;
+  return error;
+};

repository/meeting.js

+const Sequelize = require('sequelize');
+const { sequelize } = require('../models/index');
+const {
+  createMostConfirmedTimeNotFoundError,
+} = require('../errors/meetingErrors');
+
+exports.getMostConfirmedTime = async (purpose) => {
+  const query = `
+      SELECT EXTRACT(HOUR FROM m.confirmed_time) AS confirmed_time_hour,
+             COUNT(1)                            AS confirmed_time_count
+      FROM meetings m
+      WHERE m.is_closed
+        AND m.purpose = :purpose
+        AND m.confirmed_time IS NOT NULL
+      GROUP BY confirmed_time_hour
+      ORDER BY confirmed_time_count DESC;
+  `;
+  const params = {
+    replacements: { purpose },
+    type: Sequelize.QueryTypes.SELECT,
+    plain: true,
+  };
+  const result = await sequelize.query(query, params);
+  if (!result) {
+    throw createMostConfirmedTimeNotFoundError();
+  }
+  return {
+    hour: result.confirmed_time_hour,
+    count: result.confirmed_time_count,
+  };
+};

routes/meeting.js

@@ -5,6 +5,7 @@ const {
   entry,
   getMeetingById,
   getMeetingDetailById,
+  getMostConfirmedTime,
   closeMeeting,
   confirmTime,
 } = require('../controllers/meeting');
@@ -13,6 +14,8 @@ const router = express.Router();
 
 router.post('/', createMeeting);
 
+router.get('/most-confirmed-time', getMostConfirmedTime);
+
 router.post('/:meetingId/entry', entry);
 
 router.get('/:meetingId', isAuthenticated, getMeetingById);