Merge pull request #39 from 5th-Neordinary-HACKATHON-MEETA/issue/38

feat: 팀 참가 API 구현

src/common/response/response.code.ts

@@ -60,6 +60,11 @@ export const RESPONSE_CODE: Record<number, ResponseCode> = {
     message: '존재하지 않는 팀입니다.',
     status: HttpStatus.NOT_FOUND,
   },
+  24090: {
+    code: 24090,
+    message: '이미 참여한 유저입니다.',
+    status: HttpStatus.CONFLICT,
+  },
 
   //MEETING
   34040: {

src/teams/teams.controller.ts

@@ -52,4 +52,15 @@ export class TeamsController {
       teams,
     });
   }
+
+  /* 팀 참가하기 */
+  @Put('/:teamId/join')
+  @UseGuards(JwtAuthGuard)
+  async joinTeam(
+    @AuthUser() user: User,
+    @Param('teamId') teamId: string,
+  ): Promise<ResponseBody> {
+    await this.teamsService.joinTeam(user, teamId);
+    return SuccessResponse(RESPONSE_CODE[2000], null);
+  }
 }

src/teams/teams.service.ts

@@ -67,4 +67,29 @@ export class TeamsService {
     team.endedAt = editTeamDto.endedAt || team.endedAt;
     await this.teamRepository.save(team);
   }
+
+  /* 팀 참여하기 */
+  async joinTeam(user: User, teamId: string): Promise<void> {
+    const team = await this.teamRepository.findOne({
+      where: {
+        id: teamId,
+      },
+    });
+    if (team === null) {
+      throw new Exception(RESPONSE_CODE[4040], null);
+    }
+    const participant = await this.participantRepository.findOne({
+      where: {
+        user: { id: user.id },
+        team: { id: team.id },
+      },
+    });
+    if (participant !== null) {
+      throw new Exception(RESPONSE_CODE[24090], null);
+    }
+    const newParticipant = new Participant();
+    newParticipant.team = team;
+    newParticipant.user = user;
+    await this.participantRepository.save(newParticipant);
+  }
 }