问Nestjs和Google Recaptcha

EN

import { HttpModule, Module } from '@nestjs/common';

@Module({
    imports: [HttpModule],
    ...
})

import { HttpService, Inject, Injectable } from "@nestjs/common";
import { REQUEST } from '@nestjs/core';
import { Request } from 'express';
import { map } from 'rxjs/operators'

@Injectable()
export class CaptchaService {
    constructor(
        @Inject(REQUEST) private readonly request: Request,
        private httpService: HttpService) { }

    public validate(value:string): Promise<any> {
        const remoteAddress = this.request.socket.remoteAddress
        const secretKey = "XXXXXXXXX"
        const url = "https://www.google.com/recaptcha/api/siteverify?secret=" + secretKey + "&response=" + value + "&remoteip=" + remoteAddress;

        return this.httpService.post(url).pipe(map(response => {
            return response['data']
        })).toPromise()
    }
    
}

 const value="XXXXX" // client send this for you
 const result = await this.captchService.validate(value)
 if (!result.success) throw new BadRequestException()