購入時に配送オプションをカスタマイズする非公開プレビュー

const stripe = require('stripe')(
'sk_test_4eC39HqLyjWDarjtT1zdp7dc', {
  apiVersion: '2024-11-20.acacia; checkout_server_update_beta=v1',
});

const express = require('express');
const app = express();

app.post('/checkout', async (req, res) => {
  const session = await stripe.checkout.sessions.create({
    ui_mode: 'embedded',
    permissions: {
      update: {
        shipping_details: 'server_only',
      }
    },
    shipping_address_collection: {
      allowed_countries: ['US'],
    },
    line_items: [
      {
        // Provide the exact Price ID (for example, pr_1234) of the product you want to sell
        price: '{{PRICE_ID}}',
        quantity: 1,
      },
    ],
    mode: 'payment',
    return_url: `${YOUR_DOMAIN}/return?session_id={CHECKOUT_SESSION_ID}`,
  });

  res.json({clientSecret: session.client_secret});
});

app.listen(3000, () => {
  console.log('Running on port 3000');
});

function validateShippingDetails(shippingDetails) {
  // Implement this function to validate the shipping details the customer has entered.
}

function calculateShippingOptions(shippingDetails, session) {
  // Implement this function to calculate shipping options based on
  // the customer's shipping details and the Checkout Session's line items.
}

app.post('/calculate-shipping-options', async (req, res) => {
  const {checkout_session_id, shipping_details} = req.body;

  // 1. Retrieve the Checkout Session
  const session = await stripe.checkout.sessions.retrieve(checkout_session_id);

  // 2. Validate the shipping details
  if (!validateShippingDetails(shipping_details)) {
    return res.json({type: 'error', message: 'We cannot ship to your address. Please choose a different address.'});
  }

  // 3. Calculate the shipping options
  const shippingOptions = calculateShippingOptions(shipping_details, session);

  // 4. Update the Checkout Session with the customer's shipping details and shipping options
  if (shippingOptions) {
    await stripe.checkout.sessions.update(checkout_session_id, {
      collected_information: {shipping_details},
      shipping_options: shippingOptions,
    });

    return res.json({type:'object', value: {succeeded: true}});
  } else {
    return res.json({type:'error', message: "We can't find shipping options. Please try again."});
  }
});