[BE - #80 ] pinCode check API 구현 (#81)

* fix: participant emit 값 변경

* feat: pinCode 체크 api 구현

packages/server/src/app.module.ts

@@ -11,6 +11,7 @@ import { GameGateway } from './module/game/game.gateway';
 import { RedisService } from './config/database/redis/redis.service';
 import { RedisModule } from '@nestjs-modules/ioredis'; // 추가
 import { GameService } from './module/game/games/game.service';
+import { GameController } from './module/game/games/game.controller';
 @Module({
   imports: [
     UserModule,
@@ -36,7 +37,7 @@ import { GameService } from './module/game/games/game.service';
       url: process.env.REDIS_URL,
     }),
   ],
-  controllers: [AppController],
+  controllers: [AppController, GameController],
   providers: [AppService, GameGateway, RedisService, GameService],
   exports: [RedisService],
 })

packages/server/src/module/game/game.gateway.ts

@@ -72,19 +72,18 @@ export class GameGateway implements OnGatewayConnection, OnGatewayDisconnect {
     const { pinCode, nickname } = payload;
     const clientInfo = { pinCode, nickname };
 
-    client.join(pinCode); // 같은 룸에 들어오게 된것
+    client.join(pinCode);
 
     const participantSid = uuidv4();
     this.redisService.set(`participant_sid=${participantSid}`, JSON.stringify(clientInfo));
     client.emit('session', participantSid);
 
-    // 레디스 갱신
     const gameInfo = JSON.parse(await this.redisService.get(`gameId=${pinCode}`));
-    const newParticipantList = gameInfo.participantList.push(nickname);
+    gameInfo.participantList.push(nickname);
     this.redisService.set(`gameId=${pinCode}`, JSON.stringify(gameInfo));
 
-    client.emit('nickname', newParticipantList);
-    client.to(pinCode).emit('nickname', newParticipantList);
+    client.emit('nickname', gameInfo.participantList);
+    client.to(pinCode).emit('nickname', gameInfo.participantList);
 
     return;
   }

packages/server/src/module/game/games/game.controller.ts

@@ -0,0 +1,13 @@
+import { Controller, Get, Param, Post, UsePipes, ValidationPipe } from '@nestjs/common';
+import { GameService } from './game.service';
+
+@Controller('api')
+export class GameController {
+  constructor(private readonly gameService: GameService) {}
+
+  @Get('games/:pinCode')
+  @UsePipes(ValidationPipe)
+  async checkPinCode(@Param('pinCode') pinCode: string) {
+    return await this.gameService.checkPinCode(pinCode);
+  }
+}

packages/server/src/module/game/games/game.service.ts

@@ -2,18 +2,33 @@ import { Injectable, HttpException, HttpStatus, Param } from '@nestjs/common';
 import { ChoiceRepository } from '../../quiz/quizzes/repositories/choice.repository';
 import { ClassRepository } from '../../quiz/quizzes/repositories/class.repository';
 import { QuizRepository } from '../../quiz/quizzes/repositories/quiz.repository';
+import { RedisService } from '../../../config/database/redis/redis.service';
 
 @Injectable()
 export class GameService {
   constructor(
     private readonly classRepository: ClassRepository,
     private readonly quizRepository: QuizRepository,
     private readonly choiceRepository: ChoiceRepository,
+    private readonly redisService: RedisService,
   ) {}
 
   async cachingQuizData(classId: number) {
     const classWithRelations = await this.classRepository.findClassWithRelations(classId);
 
     return classWithRelations;
   }
+
+  async checkPinCode(pinCode: string) {
+    try {
+      const result = await this.redisService.get(`gameId=${pinCode}`);
+
+      if (result) {
+        return { isExist: true, message: 'pinCode exists.' };
+      }
+      return { isExist: false, message: 'pinCode not exists.' };
+    } catch (error) {
+      console.error('error: ', error);
+    }
+  }
 }