プロモーションメールへの同意を収集するアメリカのみ

curl https://api.stripe.com/v1/checkout/sessions \
  -u "
sk_test_4eC39HqLyjWDarjtT1zdp7dc
:" \
  -d "line_items[0][price]"=
{{PRICE_ID}} \
  -d "line_items[0][quantity]"=2 \
  -d customer=
{{CUSTOMER_ID}} \
  -d mode=payment \
  --data-urlencode success_url="https://example.com/success" \
  --data-urlencode cancel_url="https://example.com/cancel" \
  -d "consent_collection[promotions]"=auto

// Find your endpoint's secret in your Dashboard's webhook settings
const endpointSecret = 'whsec_...';

// Using Express
const app = require('express')();

// Use body-parser to retrieve the raw body as a buffer
const bodyParser = require('body-parser');

const recordPromotionalEmailConsent = (email, promoConsent) => {
  // TODO: fill me in
  console.log("Recording promotional email consent", email, promoConsent);
}

app.post('/webhook', bodyParser.raw({type: 'application/json'}), (request, response) => {
  const payload = request.body;
  const sig = request.headers['stripe-signature'];

  let event;

  try {
    event = stripe.webhooks.constructEvent(payload, sig, endpointSecret);
  } catch (err) {
    return response.status(400).send(`Webhook Error: ${err.message}`);
  }

  // Handle the checkout.session.completed event
  if (event.type === 'checkout.session.completed') {
    const session = event.data.object;
    const promoConsent = session.consent?.promotions;
    const email = session.customer_details.email;

    // Record whether or not the customer has agreed to receive promotional emails
    recordPromotionalEmailConsent(email, promoConsent)

    // Handle order fulfillment
  }
  response.status(200).end();
});