在Shopify节点/react应用上处理“取消”订阅

// 前端代码示例
const handleCancelSubscription = async () => {
  try {
    await fetch('/api/cancel-subscription', { method: 'POST' });
    // 更新前端状态
    setSubscriptionStatus('Cancelled');
  } catch (error) {
    console.error('Error cancelling subscription:', error);
  }
};

// 后端代码示例（Node.js）
app.post('/webhook/cancel-subscription', (req, res) => {
  const signature = req.headers['x-shopify-hmac-sha256'];
  const body = JSON.stringify(req.body);

  if (verifyHmac(signature, body)) {
    // 处理取消订阅逻辑
    const { id } = req.body;
    updateSubscriptionStatus(id, 'Cancelled');
    res.sendStatus(200);
  } else {
    res.sendStatus(403);
  }
});

function verifyHmac(signature, body) {
  const secret = process.env.SHOPIFY_WEBHOOK_SECRET;
  const computedSignature = crypto.createHmac('sha256', secret).update(body).digest('base64');
  return signature === computedSignature;
}