feat: id, 이름으로 참가자 단건 조회하기 API 구현

controllers/participant.js

@@ -2,6 +2,7 @@ const bcrypt = require('bcrypt');
 const { createPasswordIsNullError } = require('../errors/meetingErrors');
 const {
   createParticipantIsAlreadyExistError,
+  createParticipantNotFoundError,
 } = require('../errors/participantErrors');
 const ParticipantResponse = require('../dto/response/participantResponse');
 const { Participant } = require('../models');
@@ -17,6 +18,18 @@ async function createParticipant(name, password, email, meetingId) {
   });
 }
 
+async function getParticipantById(participantId) {
+  const participant = await Participant.findOne({
+    where: {
+      id: participantId,
+    },
+  });
+  if (!participant) {
+    throw createParticipantNotFoundError();
+  }
+  return participant;
+}
+
 async function findParticipantByMeetingIdAndName(meetingId, name) {
   return Participant.findOne({
     where: {
@@ -26,6 +39,14 @@ async function findParticipantByMeetingIdAndName(meetingId, name) {
   });
 }
 
+async function getParticipantByMeetingIdAndName(meetingId, name) {
+  const participant = await findParticipantByMeetingIdAndName(meetingId, name);
+  if (!participant) {
+    throw createParticipantNotFoundError();
+  }
+  return participant;
+}
+
 async function encryptPassword(password, next) {
   if (!password) {
     return next(createPasswordIsNullError());
@@ -69,6 +90,27 @@ exports.createParticipant = async (req, res, next) => {
   }
 };
 
+exports.getParticipantById = async (req, res, next) => {
+  try {
+    const participant = await getParticipantById(req.params.participantId);
+    return res.json(ParticipantResponse.from(participant));
+  } catch (error) {
+    return next(error);
+  }
+};
+
+exports.getParticipantByName = async (req, res, next) => {
+  try {
+    const participant = await getParticipantByMeetingIdAndName(
+      req.params.meetingId,
+      req.query.name,
+    );
+    return res.json(ParticipantResponse.from(participant));
+  } catch (error) {
+    return next(error);
+  }
+};
+
 exports.getParticipantExistence = async (req, res, next) => {
   try {
     const participant = await findParticipantByMeetingIdAndName(

errors/participantErrors.js

@@ -5,3 +5,9 @@ exports.createParticipantIsAlreadyExistError = () => {
   error.status = 409;
   return error;
 };
+
+exports.createParticipantNotFoundError = () => {
+  const error = new Error('참가자 정보를 찾을 수 없습니다.');
+  error.status = 404;
+  return error;
+};

routes/participant.js

 const express = require('express');
 const {
   createParticipant,
+  getParticipantByName,
+  getParticipantById,
   getParticipantExistence,
 } = require('../controllers/participant');
 
@@ -8,6 +10,10 @@ const router = express.Router();
 
 router.post('/:meetingId/participants', createParticipant);
 
+router.get('/:meetingId/participants', getParticipantByName);
+
+router.get('/:meetingId/participants/:participantId', getParticipantById);
+
 router.get('/:meetingId/participants/existence', getParticipantExistence);
 
 module.exports = router;