@Get()
 index() {
   return {
     status: 'OK',
     v: 4
   };
 }

 @Get('broadcast')
 multicats() {
   return this.client.send<number>({ cmd: 'broadcast' }, {})
     .pipe(
       scan((a, b) => a + b),
       take(2),
     );
 }

 @Get()
 call(): Observable<string> {
   //呼叫使用一個策略，選定sayHi
   const pattern = { cmd: 'sayHi' };
   //由於send()要傳入兩個參數，pattern 和 data，data這邊給定空字串。
   const data = '';
   return this.client.send<string>(pattern, data);
 }

 @ApiOperation({ title: 'Root of api', description: 'Just fetches the name and version' })
 @ApiResponse({ status: 200, description: 'If the server is up and running' })
 @Get()
 root(): any {
   return {
     name: pkg.name,
     version: pkg.version
   };
 }

 @Get()
 findOne(): UserEntity {
   return new UserEntity({
     id: 1,
     firstName: 'Kamil',
     lastName: 'Mysliwiec',
     password: 'password',
     role: new RoleEntity({ id: 1, name: 'admin' }),
   });
 }

    @Get()
    async root() {
        const model: MarketAccount = await this.marketAccountService.findOne(1);
        const exchange: Exchange = model.exchange;
        if (exchange !== Exchange.gateio) {
            model.exchange = Exchange.gateio;
        }

        return await model.save();
    }

 @Get('/rabbitMQ')
 callRabbitMQ(): Observable<string> {
   //呼叫使用一個策略，選定amqp
   const pattern = { cmd: 'amqp' };
   //send()要傳入兩個參數，pattern 和 data，pattern選擇哪種策略，data則是要傳遞的訊息。
   const data = 'use RabbitMQ';
   //透過RabbitMQ消息隊列方式傳遞訊息，注意queue要跟server.ts建立的RabbitMQServer的queue一樣
   this.client = new RabbitMQClient('amqp://rmtahlzz:[email protected]/rmtahlzz', 'example');
   return this.client.send<string>(pattern, data);
 }

 @Get()
 findAll(): Promise<Photo[]> {
   return this.photoService.findAll();
 }

 @Get('token')
 async createToken(): Promise<any> {
   return await this.authService.createToken();
 }

 @Get('data')
 @UseGuards(AuthGuard('jwt'))
 findAll() {
   // this route is restricted
   return [];
 }