Flutter:如何为firebase身份验证插件实现recaptcha

dependencies:
  firebase_auth: ^x.x.x
  flutter_recaptcha_v2: ^x.x.x

import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter_recaptcha_v2/flutter_recaptcha_v2.dart';

final FirebaseAuth _auth = FirebaseAuth.instance;
final GlobalKey<ReCaptchaState> _reCaptchaKey = GlobalKey();

void verifyPhoneNumber() async {
  // 实现手机号码验证逻辑
}

void verifyRecaptcha() async {
  String token = await _reCaptchaKey.currentState.show();
  // 在这里使用 reCAPTCHA token 进行验证
}

void signInWithPhoneNumber(String verificationId, String smsCode) async {
  final AuthCredential credential = PhoneAuthProvider.getCredential(
    verificationId: verificationId,
    smsCode: smsCode,
  );
  final User user = (await _auth.signInWithCredential(credential)).user;
  // 在这里处理用户登录逻辑
}

ReCaptcha(
  apiKey: 'YOUR_RECAPTCHA_API_KEY',
  apiSecret: 'YOUR_RECAPTCHA_API_SECRET',
  controller: _reCaptchaKey,
  onVerifiedError: (err) => print(err),
  onVerifiedSuccessfully: (success) => verifyPhoneNumber(),
)