From ec1590e86bef22228ef770f28ecebc70fd8cf317 Mon Sep 17 00:00:00 2001
From: DongHyeok Lim <jh07050@gmail.com>
Date: Sun, 28 Jan 2024 13:42:07 +0900
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20=ED=8A=B9=EC=A0=95=20=EA=B7=B8?=
 =?UTF-8?q?=EB=A3=B9=20=EC=A0=95=EB=B3=B4=20=EB=B0=98=ED=99=98=20API=20?=
 =?UTF-8?q?=EA=B5=AC=ED=98=84?=
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특정 그룹의 id, 이름, 가입 멤버 수를 반환합니다.
---
 app/backend/src/groups/groups.controller.ts | 18 +++++++++++++++---
 app/backend/src/groups/groups.repository.ts | 15 +++++++++++++++
 app/backend/src/groups/groups.service.ts    |  4 ++++
 3 files changed, 34 insertions(+), 3 deletions(-)

diff --git a/app/backend/src/groups/groups.controller.ts b/app/backend/src/groups/groups.controller.ts
index 2a5284635..fe1bbfc48 100644
--- a/app/backend/src/groups/groups.controller.ts
+++ b/app/backend/src/groups/groups.controller.ts
@@ -26,7 +26,19 @@ export class GroupsController {
     return this.groupsService.getAllGroups();
   }
 
-  @Get('/:id/groups')
+  @Get('/:id')
+  @ApiOperation({
+    summary: '특정 그룹 정보 조회',
+    description: '특정 그룹의 정보를 조회합니다.',
+  })
+  @ApiResponse({ status: 200, description: 'Successfully retrieved', type: [GroupsWithMemberCountDto] })
+  @ApiResponse({ status: 401, description: 'Unauthorized' })
+  @ApiResponse({ status: 404, description: 'Group with id not found' })
+  async getGroups(@Param('id', ParseIntPipe) id: number): Promise<Group & { membersCount: number }> {
+    return this.groupsService.getGroups(id);
+  }
+
+  @Get('/:id/members')
   @ApiOperation({
     summary: '특정 그룹 소속 인원 조회',
     description: '특정 그룹의 Id 값으로 해당 그룹의 소속 인원을 조회합니다.',
@@ -40,8 +52,8 @@ export class GroupsController {
 
   @Post('/')
   @ApiOperation({
-    summary: '그룹 개설',
-    description: '새로운 모각코를 개설합니다.',
+    summary: '그룹 생성',
+    description: '새로운 그룹을 생성합니다.',
   })
   @ApiBody({ type: CreateGroupsDto })
   @ApiResponse({ status: 201, description: 'Successfully created', type: CreateGroupsDto })
diff --git a/app/backend/src/groups/groups.repository.ts b/app/backend/src/groups/groups.repository.ts
index cad32d2b8..9740e59c7 100644
--- a/app/backend/src/groups/groups.repository.ts
+++ b/app/backend/src/groups/groups.repository.ts
@@ -27,6 +27,21 @@ export class GroupsRepository {
     return Promise.all(groupPromises);
   }
 
+  async getGroups(id: number): Promise<Group & { membersCount: number }> {
+    const group = await this.prisma.group.findUnique({
+      where: {
+        id: id,
+      },
+    });
+
+    if (!group) {
+      throw new NotFoundException(`Group with ID ${id} not found.`);
+    }
+
+    const membersCount = await this.getGroupMembersCount(id);
+    return { ...group, membersCount };
+  }
+
   async getAllMembersOfGroup(groupId: number): Promise<MemberInformationDto[]> {
     const groupToUsers = await this.prisma.groupToUser.findMany({
       where: {
diff --git a/app/backend/src/groups/groups.service.ts b/app/backend/src/groups/groups.service.ts
index 1af741c20..deb41ae17 100644
--- a/app/backend/src/groups/groups.service.ts
+++ b/app/backend/src/groups/groups.service.ts
@@ -12,6 +12,10 @@ export class GroupsService {
     return this.groupsRepository.getAllGroups();
   }
 
+  async getGroups(id: number): Promise<Group & { membersCount: number }> {
+    return this.groupsRepository.getGroups(id);
+  }
+
   async getAllMembersOfGroup(id: number): Promise<MemberInformationDto[]> {
     return this.groupsRepository.getAllMembersOfGroup(id);
   }