✨ 그룹 삭제 API 구현

app/backend/src/groups/groups.controller.ts

@@ -144,6 +144,20 @@ export class GroupsController {
     return this.groupsService.approveGroup(id, memberId, member);
   }
 
+  @Delete('/:id')
+  @ApiOperation({
+    summary: '그룹 삭제',
+    description: '특정 그룹을 삭제합니다.',
+  })
+  @ApiParam({ name: 'id', description: '삭제할 그룹의 Id' })
+  @ApiResponse({ status: 200, description: 'Successfully deleted the group' })
+  @ApiResponse({ status: 401, description: 'Unauthorized' })
+  @ApiResponse({ status: 403, description: 'Forbidden' })
+  @ApiResponse({ status: 404, description: 'Group with id not found' })
+  async deleteGroup(@Param('id', ParseIntPipe) id: number, @GetUser() member: Member): Promise<void> {
+    await this.groupsService.deleteGroup(id, member);
+  }
+
   @Delete('/:id/leave')
   @ApiOperation({
     summary: '그룹 참가 취소',

app/backend/src/groups/groups.repository.ts

@@ -144,6 +144,32 @@ export class GroupsRepository {
     });
   }
 
+  async deleteGroup(groupId: number, member: Member): Promise<void> {
+    const group = await this.prisma.group.findUnique({
+      where: {
+        id: groupId,
+      },
+    });
+
+    if (!group) {
+      throw new NotFoundException(`Group with id ${groupId} not found`);
+    }
+
+    const isGroupOwner = await this.isGroupOwner(groupId, Number(member.id));
+    if (!isGroupOwner) {
+      throw new ForbiddenException('Only group owners can delete the group');
+    }
+
+    await this.prisma.group.update({
+      where: {
+        id: groupId,
+      },
+      data: {
+        deletedAt: new Date(),
+      },
+    });
+  }
+
   async leaveGroup(groupId: number, member: Member): Promise<void> {
     const group = await this.prisma.group.findUnique({
       where: { id: groupId },

app/backend/src/groups/groups.service.ts

@@ -47,6 +47,10 @@ export class GroupsService {
     }
   }
 
+  async deleteGroup(groupId: number, member: Member): Promise<void> {
+    await this.groupsRepository.deleteGroup(groupId, member);
+  }
+
   async leaveGroup(id: number, member: Member): Promise<void> {
     await this.groupsRepository.leaveGroup(id, member);
   }