feat: add auth server package

packages/auth/src/Domain/UseCase/AddWebSocketsConnection/AddWebSocketsConnection.spec.ts

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+import 'reflect-metadata'
+import { Logger } from 'winston'
+import { WebSocketsConnectionRepositoryInterface } from '../../WebSockets/WebSocketsConnectionRepositoryInterface'
+
+import { AddWebSocketsConnection } from './AddWebSocketsConnection'
+
+describe('AddWebSocketsConnection', () => {
+  let webSocketsConnectionRepository: WebSocketsConnectionRepositoryInterface
+  let logger: Logger
+
+  const createUseCase = () => new AddWebSocketsConnection(webSocketsConnectionRepository, logger)
+
+  beforeEach(() => {
+    webSocketsConnectionRepository = {} as jest.Mocked<WebSocketsConnectionRepositoryInterface>
+    webSocketsConnectionRepository.saveConnection = jest.fn()
+
+    logger = {} as jest.Mocked<Logger>
+    logger.debug = jest.fn()
+  })
+
+  it('should save a web sockets connection for a user for further communication', async () => {
+    await createUseCase().execute({ userUuid: '1-2-3', connectionId: '2-3-4' })
+
+    expect(webSocketsConnectionRepository.saveConnection).toHaveBeenCalledWith('1-2-3', '2-3-4')
+  })
+})

packages/auth/src/Domain/UseCase/AddWebSocketsConnection/AddWebSocketsConnection.ts

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+import { inject, injectable } from 'inversify'
+import { Logger } from 'winston'
+import TYPES from '../../../Bootstrap/Types'
+import { WebSocketsConnectionRepositoryInterface } from '../../WebSockets/WebSocketsConnectionRepositoryInterface'
+import { UseCaseInterface } from '../UseCaseInterface'
+import { AddWebSocketsConnectionDTO } from './AddWebSocketsConnectionDTO'
+import { AddWebSocketsConnectionResponse } from './AddWebSocketsConnectionResponse'
+
+@injectable()
+export class AddWebSocketsConnection implements UseCaseInterface {
+  constructor(
+    @inject(TYPES.WebSocketsConnectionRepository)
+    private webSocketsConnectionRepository: WebSocketsConnectionRepositoryInterface,
+    @inject(TYPES.Logger) private logger: Logger,
+  ) {}
+
+  async execute(dto: AddWebSocketsConnectionDTO): Promise<AddWebSocketsConnectionResponse> {
+    this.logger.debug(`Persisting connection ${dto.connectionId} for user ${dto.userUuid}`)
+
+    await this.webSocketsConnectionRepository.saveConnection(dto.userUuid, dto.connectionId)
+
+    return {
+      success: true,
+    }
+  }
+}

packages/auth/src/Domain/UseCase/AddWebSocketsConnection/AddWebSocketsConnectionDTO.ts

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+export type AddWebSocketsConnectionDTO = {
+  userUuid: string
+  connectionId: string
+}

packages/auth/src/Domain/UseCase/AddWebSocketsConnection/AddWebSocketsConnectionResponse.ts

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+export type AddWebSocketsConnectionResponse = {
+  success: boolean
+}