feat(api/private): add GroupsController

The GroupsController can be used to fetch information about groups.

Signed-off-by: David Mehren <git@herrmehren.de>

src/api/private/groups/groups.controller.ts

@@ -0,0 +1,34 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+import { Controller, Get, Param, UseGuards } from '@nestjs/common';
+import { ApiTags } from '@nestjs/swagger';
+
+import { GroupInfoDto } from '../../../groups/group-info.dto';
+import { GroupsService } from '../../../groups/groups.service';
+import { SessionGuard } from '../../../identity/session.guard';
+import { ConsoleLoggerService } from '../../../logger/console-logger.service';
+import { OpenApi } from '../../utils/openapi.decorator';
+
+@UseGuards(SessionGuard)
+@OpenApi(401, 403)
+@ApiTags('groups')
+@Controller('groups')
+export class GroupsController {
+  constructor(
+    private readonly logger: ConsoleLoggerService,
+    private groupService: GroupsService,
+  ) {
+    this.logger.setContext(GroupsController.name);
+  }
+
+  @Get(':groupName')
+  @OpenApi(200)
+  async getGroup(@Param('groupName') groupName: string): Promise<GroupInfoDto> {
+    return this.groupService.toGroupDto(
+      await this.groupService.getGroupByName(groupName),
+    );
+  }
+}

src/api/private/private-api.module.ts

@@ -7,6 +7,7 @@ import { Module } from '@nestjs/common';
 
 import { AuthModule } from '../../auth/auth.module';
 import { FrontendConfigModule } from '../../frontend-config/frontend-config.module';
+import { GroupsModule } from '../../groups/groups.module';
 import { HistoryModule } from '../../history/history.module';
 import { IdentityModule } from '../../identity/identity.module';
 import { LoggerModule } from '../../logger/logger.module';
@@ -18,6 +19,7 @@ import { UsersModule } from '../../users/users.module';
 import { AliasController } from './alias/alias.controller';
 import { AuthController } from './auth/auth.controller';
 import { ConfigController } from './config/config.controller';
+import { GroupsController } from './groups/groups.controller';
 import { HistoryController } from './me/history/history.controller';
 import { MeController } from './me/me.controller';
 import { MediaController } from './media/media.controller';
@@ -37,6 +39,7 @@ import { UsersController } from './users/users.controller';
     MediaModule,
     RevisionsModule,
     IdentityModule,
+    GroupsModule,
   ],
   controllers: [
     TokensController,
@@ -48,7 +51,7 @@ import { UsersController } from './users/users.controller';
     AliasController,
     AuthController,
     UsersController,
-    GroupController,
+    GroupsController,
   ],
 })
 export class PrivateApiModule {}

test/private-api/groups.e2e-spec.ts

@@ -0,0 +1,60 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+import request from 'supertest';
+
+import { LoginDto } from '../../src/identity/local/login.dto';
+import { TestSetup, TestSetupBuilder } from '../test-setup';
+
+describe('Groups', () => {
+  let testSetup: TestSetup;
+  let testuser1Session: request.SuperAgentTest;
+
+  beforeEach(async () => {
+    testSetup = await TestSetupBuilder.create().withUsers().build();
+    await testSetup.app.init();
+
+    // create a test group
+    await testSetup.groupService.createGroup('testgroup1', 'testgroup1', false);
+
+    // log in to create a session
+    const loginDto: LoginDto = {
+      password: 'testuser1',
+      username: 'testuser1',
+    };
+    testuser1Session = request.agent(testSetup.app.getHttpServer());
+    await testuser1Session
+      .post('/api/private/auth/local/login')
+      .set('Content-Type', 'application/json')
+      .send(JSON.stringify(loginDto))
+      .expect(201);
+  });
+
+  afterEach(async () => {
+    await testSetup.app.close();
+  });
+
+  test('details for existing groups can be retrieved', async () => {
+    const response = await testuser1Session.get(
+      '/api/private/groups/testgroup1',
+    );
+    expect(response.status).toBe(200);
+    expect(response.body.name).toBe('testgroup1');
+  });
+
+  test('details for non-existing groups cannot be retrieved', async () => {
+    const response = await testuser1Session.get(
+      '/api/private/groups/i_dont_exist',
+    );
+    expect(response.status).toBe(404);
+  });
+
+  test('API requires authentication', async () => {
+    const response = await request(testSetup.app.getHttpServer()).get(
+      '/api/private/groups/testgroup1',
+    );
+    expect(response.status).toBe(401);
+  });
+});

test/test-setup.ts

@@ -27,6 +27,7 @@ import noteConfigMock from '../src/config/mock/note.config.mock';
 import { ErrorExceptionMapping } from '../src/errors/error-mapping';
 import { FrontendConfigModule } from '../src/frontend-config/frontend-config.module';
 import { GroupsModule } from '../src/groups/groups.module';
+import { GroupsService } from '../src/groups/groups.service';
 import { HistoryModule } from '../src/history/history.module';
 import { HistoryService } from '../src/history/history.service';
 import { IdentityModule } from '../src/identity/identity.module';
@@ -51,6 +52,7 @@ export class TestSetup {
   app: NestExpressApplication;
 
   userService: UsersService;
+  groupService: GroupsService;
   configService: ConfigService;
   identityService: IdentityService;
   notesService: NotesService;
@@ -152,6 +154,8 @@ export class TestSetupBuilder {
 
     this.testSetup.userService =
       this.testSetup.moduleRef.get<UsersService>(UsersService);
+    this.testSetup.groupService =
+      this.testSetup.moduleRef.get<GroupsService>(GroupsService);
     this.testSetup.configService =
       this.testSetup.moduleRef.get<ConfigService>(ConfigService);
     this.testSetup.identityService =