createCheckout method

Future<Checkout> createCheckout({
  1. List<LineItem>? lineItems,
  2. Address? mailingAddress,
  3. bool deleteThisPartOfCache = false,
})

Implementation

Future<Checkout> createCheckout({
  List<LineItem>? lineItems,
  Address? mailingAddress,
  bool deleteThisPartOfCache = false,
}) async {
  final MutationOptions _options =
      MutationOptions(document: gql(createCheckoutMutation), variables: {
    'input': {
      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(),
            }
        ],
      if (mailingAddress != null)
        'shippingAddress': {
          'address1': mailingAddress.address1,
          'address2': mailingAddress.address2,
          'city': mailingAddress.city,
          'company': mailingAddress.company,
          'country': mailingAddress.country,
          'firstName': mailingAddress.firstName,
          'lastName': mailingAddress.lastName,
          'phone': mailingAddress.phone,
          'province': mailingAddress.province,
          'zip': mailingAddress.zip
        }
    }
  });
  final QueryResult result = await _graphQLClient!.mutate(_options);
  checkForError(
    result,
    key: 'checkoutCreate',
    errorKey: 'checkoutUserErrors',
  );
  if (deleteThisPartOfCache) {
    _graphQLClient!.cache.writeQuery(_options.asRequest, data: {});
  }

  return Checkout.fromJson(
      ((result.data!['checkoutCreate'] ?? const {})['checkout'] ?? const {}));
}