刷脸支付代金卷

// 假设使用的是某个第三方人脸识别SDK
import FaceRecognitionSDK from 'face-recognition-sdk';

const faceRecognition = new FaceRecognitionSDK();

async function payWithFaceAndCoupon(userId, couponCode) {
  try {
    // 进行人脸识别验证
    const isVerified = await faceRecognition.verify(userId);
    if (!isVerified) {
      throw new Error('人脸识别验证失败');
    }

    // 检查代金券有效性
    const coupon = await checkCouponValidity(couponCode);
    if (!coupon) {
      throw new Error('代金券无效或已过期');
    }

    // 执行支付操作
    const paymentResult = await performPayment(userId, coupon);
    return paymentResult;
  } catch (error) {
    console.error('支付失败:', error.message);
    throw error;
  }
}

async function checkCouponValidity(couponCode) {
  // 调用后端API检查代金券有效性
  const response = await fetch('/api/check-coupon', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({ couponCode })
  });
  const data = await response.json();
  return data.valid ? data.coupon : null;
}

async function performPayment(userId, coupon) {
  // 调用后端API执行支付操作
  const response = await fetch('/api/pay', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({ userId, coupon })
  });
  const data = await response.json();
  return data;
}