基于Firebase后端实现Adyen加密支付：curl转Firebase Functions请求问询

Here's how to translate your Adyen payment request into a Firebase Cloud Function that handles the backend call to Adyen's API:

Step 1: Set Up Dependencies #

First, install axios in your Firebase Functions directory (we’ll use it to send HTTP requests to Adyen):

npm install axios

Step 2: Create the Firebase Function #

This HTTP-triggered function will accept encrypted card data from your frontend, construct the Adyen request, and return the response:

const functions = require('firebase-functions');
const axios = require('axios');

// Use Firebase Environment Variables to store sensitive credentials (never hardcode them!)
const ADYEN_CREDENTIALS = {
  username: functions.config().adyen.username,
  password: functions.config().adyen.password,
  merchantAccount: functions.config().adyen.merchant_account,
  apiUrl: functions.config().adyen.api_url || 'https://checkout-test.adyen.com/v68/payments'
};

exports.processAdyenPayment = functions.https.onRequest(async (req, res) => {
  try {
    // Extract data from the client's POST request body
    const { encryptedCardData, reference, amountValue, currency } = req.body;

    // Build the payload matching your original curl request
    const adyenPayload = {
      additionalData: {
        "card.encrypted.json": encryptedCardData
      },
      amount: {
        value: amountValue || 10000, // Default to 100 EUR (value is in minor units)
        currency: currency || "EUR"
      },
      reference: reference || "Your Reference Here",
      merchantAccount: ADYEN_CREDENTIALS.merchantAccount
    };

    // Send POST request to Adyen with Basic Authentication
    const adyenResponse = await axios.post(
      ADYEN_CREDENTIALS.apiUrl,
      adyenPayload,
      {
        auth: {
          username: ADYEN_CREDENTIALS.username,
          password: ADYEN_CREDENTIALS.password
        },
        headers: {
          'Content-Type': 'application/json'
        }
      }
    );

    // Return Adyen's response directly to the frontend
    res.status(200).json(adyenResponse.data);
  } catch (error) {
    // Log errors for debugging and return a user-friendly response
    functions.logger.error('Adyen payment request failed:', error);
    res.status(error.response?.status || 500).json({
      error: 'Payment processing failed',
      details: error.response?.data || error.message
    });
  }
});

Step 3: Configure Environment Variables #

Store your Adyen credentials securely using Firebase’s environment variables (replace placeholders with your actual values):

firebase functions:config:set adyen.username="ws@Company.SomeCompany" adyen.password="SomePassword" adyen.merchant_account="TestMerchant" adyen.api_url="https://checkout-test.adyen.com/v68/payments"

Key Notes #

• Encrypted Card Data: Your frontend should send the encryptedCardData (generated by Adyen’s Web Components/Drop-in) to this function via a POST request.
• API Version: Double-check Adyen’s latest API version (the example uses v68, but this may update over time).
• Security: For added safety, verify Firebase Auth tokens in the function to ensure only authenticated users can process payments.
• Error Handling: Extend the error logic to handle specific Adyen error codes (e.g., invalid card details) if needed.

内容的提问来源于stack exchange，提问作者HarryTgerman