[Payment Request] Makes sure only complete credit cards can be selected

ios/chrome/browser/payments/payment_request_util.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/chrome/browser/payments/payment_request_util.h"
 
 #include "base/strings/string16.h"
 #include "base/strings/string_split.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/autofill_profile.h"
+#include "components/autofill/core/browser/credit_card.h"
 #include "components/autofill/core/browser/field_types.h"
 #include "components/autofill/core/browser/personal_data_manager.h"
+#include "components/autofill/core/browser/validation.h"
 #include "components/payments/core/payment_request_data_util.h"
 #include "components/payments/core/strings_util.h"
 #include "components/strings/grit/components_strings.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/chrome/browser/payments/payment_request.h"
 #include "ios/web/public/payments/payment_request.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
@@ skipping 40 matching lines @@
 
 NSString* GetAddressNotificationLabelFromAutofillProfile(
     PaymentRequest& payment_request,
     const autofill::AutofillProfile& profile) {
   base::string16 label =
       payment_request.profile_comparator()->GetStringForMissingShippingFields(
           profile);
   return !label.empty() ? base::SysUTF16ToNSString(label) : nil;
 }
 
+BOOL IsCreditCardCompleteForPayment(
+    const autofill::CreditCard& credit_card,
+    const std::vector<autofill::AutofillProfile*> billing_profiles) {
+  // EXPIRED cards are considered valid for payment. The user will be prompted
+  // to enter the new expiration at the CVC step.
+  return autofill::GetCompletionStatusForCard(
+             credit_card, GetApplicationContext()->GetApplicationLocale(),
+             billing_profiles) <= autofill::CREDIT_CARD_EXPIRED;
+}
+
+NSString* GetPaymentMethodNotificationLabelFromCreditCard(
+    const autofill::CreditCard& credit_card,
+    const std::vector<autofill::AutofillProfile*> billing_profiles) {
+  base::string16 label = autofill::GetCompletionMessageForCard(
+      autofill::GetCompletionStatusForCard(
+          credit_card, GetApplicationContext()->GetApplicationLocale(),
+          billing_profiles));
+  return !label.empty() ? base::SysUTF16ToNSString(label) : nil;
+}
+
 NSString* GetShippingSectionTitle(payments::PaymentShippingType shipping_type) {
   switch (shipping_type) {
     case payments::PaymentShippingType::SHIPPING:
       return l10n_util::GetNSString(IDS_PAYMENTS_SHIPPING_SUMMARY_LABEL);
     case payments::PaymentShippingType::DELIVERY:
       return l10n_util::GetNSString(IDS_PAYMENTS_DELIVERY_SUMMARY_LABEL);
     case payments::PaymentShippingType::PICKUP:
       return l10n_util::GetNSString(IDS_PAYMENTS_PICKUP_SUMMARY_LABEL);
     default:
       NOTREACHED();
@@ skipping 31 matching lines @@
       return l10n_util::GetNSString(IDS_PAYMENTS_UNSUPPORTED_DELIVERY_OPTION);
     case payments::PaymentShippingType::PICKUP:
       return l10n_util::GetNSString(IDS_PAYMENTS_UNSUPPORTED_PICKUP_OPTION);
     default:
       NOTREACHED();
       return nil;
   }
 }
 
 }  // namespace payment_request_util