<!DOCTYPE html>
<meta charset="utf-8" />
<title>Tests for PaymentRequestEvent.changeShippingOption()</title>

<link rel="manifest" href="/payment-handler/basic-card.json" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="register-and-activate-service-worker.js"></script>
<p>If the payment sheet is shown, please authorize the mock payment.</p>
<script>
  const methodName = window.location.origin + '/payment-handler/payment-app/';
  function createRequest() {
    return new PaymentRequest([{supportedMethods: methodName}], {
        total: {label: 'Total', amount: {currency: 'USD', value: '0.01'}},
        shippingOptions: [{
          id: 'freeShippingOption',
          label: 'Free global shipping',
          amount: {
            currency: 'USD',
            value: '0',
          },
          selected: false,
        },
        {
          id: 'expressShippingOption',
          label: 'express global shipping',
          amount: {
            currency: 'USD',
            value: '0',
          },
          selected: true,
        }],
      }, {requestShipping: true});
  }

  async function completeAppSetUp(registration) {
    await registration.paymentManager.instruments.clear();
    await registration.paymentManager.instruments.set('instrument-key', {
      name: 'Instrument Name',
      method: methodName,
    });
    await navigator.serviceWorker.ready;
    await registration.paymentManager.enableDelegations(['shippingAddress']);
  }

  async function runTests(registration) {
    await completeAppSetUp(registration);
    promise_test(async (t) => {
      const request = createRequest();
      // Intentionally do not respond to the 'shippingoptionchange' event.
      const response = await test_driver.bless('showing a payment sheet', () =>
        request.show()
      );
      const complete_promise = response.complete('success');

      assert_equals(response.details.changeShippingOptionReturned, null);

      return complete_promise;
    }, 'If updateWith(details) is not run, changeShippingOption() returns null.');

    promise_test(async (t) => {
      const request = createRequest();
      request.addEventListener('shippingoptionchange', (event) => {
        assert_equals(request.shippingOption, 'freeShippingOption');
        event.updateWith({
          total: {label: 'Total', amount: {currency: 'GBP', value: '0.02'}},
          error: 'Error for test',
          modifiers: [
            {
              supportedMethods: methodName,
              data: {soup: 'potato'},
              total: {
                label: 'Modified total',
                amount: {currency: 'EUR', value: '0.03'},
              },
              additionalDisplayItems: [
                {
                  label: 'Modified display item',
                  amount: {currency: 'INR', value: '0.06'},
                },
              ],
            },
            {
              supportedMethods: methodName + '2',
              data: {soup: 'tomato'},
              total: {
                label: 'Modified total #2',
                amount: {currency: 'CHF', value: '0.07'},
              },
              additionalDisplayItems: [
                {
                  label: 'Modified display item #2',
                  amount: {currency: 'CAD', value: '0.08'},
                },
              ],
            },
          ],
          displayItems: [
            {
              label: 'Display item',
              amount: {currency: 'CNY', value: '0.04'},
            },
          ],
          shippingOptions: [
            {
              id: 'freeShippingOption',
              label: 'express global shipping',
              amount: {
                currency: 'USD',
                value: '0',
              },
              selected: true,
            }
          ],
        });
      });
      const response = await test_driver.bless('showing a payment sheet', () =>
        request.show()
      );
      const complete_promise = response.complete('success');
      const changeShippingOptionReturned =
        response.details.changeShippingOptionReturned;

      assert_equals(changeShippingOptionReturned.total.currency, 'GBP');
      assert_equals(changeShippingOptionReturned.total.value, '0.02');
      assert_equals(changeShippingOptionReturned.total.label, undefined);
      assert_equals(changeShippingOptionReturned.error, 'Error for test');
      assert_equals(changeShippingOptionReturned.modifiers.length, 1);
      assert_equals(changeShippingOptionReturned.displayItems, undefined);
      assert_equals(changeShippingOptionReturned.shippingOptions.length, 1);
      assert_equals(changeShippingOptionReturned.paymentMethodErrors, undefined);
      assert_equals(changeShippingOptionReturned.shippingAddressErrors, undefined);

      const shipping_option = changeShippingOptionReturned.shippingOptions[0];
      assert_equals(shipping_option.id, 'freeShippingOption' );
      assert_equals(shipping_option.label, 'express global shipping');
      assert_equals(shipping_option.amount.currency, 'USD');
      assert_equals(shipping_option.amount.value, '0');
      assert_true(shipping_option.selected);

      const modifier = changeShippingOptionReturned.modifiers[0];
      assert_equals(modifier.supportedMethods, methodName);
      assert_equals(modifier.data.soup, 'potato');
      assert_equals(modifier.total.label, '');
      assert_equals(modifier.total.amount.currency, 'EUR');
      assert_equals(modifier.total.amount.value, '0.03');
      assert_equals(modifier.additionalDisplayItems, undefined);

      return complete_promise;
    }, 'The changeShippingOption() returns some details from the "shippingoptionchange" event\'s updateWith(details) call.');
  }

  registerAndActiveServiceWorker(
    'app-change-shipping-option.js',
    'payment-app/',
    runTests
  );
</script>