createCheckout method

Future<Checkout> createCheckout({ List<LineItem>? lineItems, Address? shippingAddress, String? email, })

creates a new Checkout with the given lineItems, shippingAddress and email.

Implementation

Future<Checkout> createCheckout({
  List<LineItem>? lineItems,
  Address? shippingAddress,
  String? email,
}) async {
  final MutationOptions _options = MutationOptions(
    document: gql(createCheckoutMutation),
    variables: {
      'input': {
        'allowPartialAddresses': true,
        if (lineItems != null)
          'lineItems': [
            for (var lineItem in lineItems)
              {
                'variantId': lineItem.variantId,
                'quantity': lineItem.quantity,
                'customAttributes': lineItem.customAttributes
                    .map((e) => {'key': e.key, 'value': e.value})
                    .toList(),
              },
          ],
        'email': ?email,
        if (shippingAddress != null)
          'shippingAddress': {
            'address1': shippingAddress.address1,
            'address2': shippingAddress.address2,
            'city': shippingAddress.city,
            'company': shippingAddress.company,
            'country': shippingAddress.country,
            'firstName': shippingAddress.firstName,
            'lastName': shippingAddress.lastName,
            'phone': shippingAddress.phone,
            'province': shippingAddress.province,
            'zip': shippingAddress.zip,
          },
      },
    },
  );
  final QueryResult result = await _graphQLClient!.mutate(_options);
  checkForError(
    result,
    key: 'checkoutCreate',
    errorKey: 'checkoutUserErrors',
  );
  return Checkout.fromJson(
    ((result.data!['checkoutCreate'] ?? const {})['checkout'] ?? const {}),
  );
}