Implemented /groups/permissions endpoint

ref #143

src/controllers/UserGroupController.ts

@@ -8,6 +8,7 @@ import { UpdateUserGroup } from '../models/actions/update/UpdateUserGroup';
 import { UserGroup } from '../models/entities/UserGroup';
 import { ResponseEmpty } from '../models/responses/ResponseEmpty';
 import { ResponseUserGroup } from '../models/responses/ResponseUserGroup';
+import { ResponseUserGroupPermissions } from '../models/responses/ResponseUserGroupPermissions';
 import { PermissionController } from './PermissionController';
 
 
@@ -41,6 +42,18 @@ export class UserGroupController {
 		return this.userGroupsRepository.findOne({ id: id }, { relations: ["permissions"] });
 	}
 
+	@Get('/:id/permissions')
+	@Authorized("USERGROUP:GET")
+	@ResponseSchema(ResponseUserGroupPermissions)
+	@ResponseSchema(UserGroupNotFoundError, { statusCode: 404 })
+	@OnUndefined(UserGroupNotFoundError)
+	@OpenAPI({ description: 'Lists all permissions granted to the group as permission response objects.' })
+	async getPermissions(@Param('id') id: number) {
+		let group = await this.userGroupsRepository.findOne({ id: id }, { relations: ['permissions', 'permissions.principal'] })
+		if (!group) { throw new UserGroupNotFoundError(); }
+		return new ResponseUserGroupPermissions(group);
+	}
+
 	@Post()
 	@Authorized("USERGROUP:CREATE")
 	@ResponseSchema(UserGroup)