[Payments] iOS: Support basic-card

ios/chrome/browser/payments/payment_request.mm

 // Copyright 2017 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.
 
 #include "ios/chrome/browser/payments/payment_request.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/autofill_data_util.h"
 #include "components/autofill/core/browser/autofill_profile.h"
 #include "components/autofill/core/browser/credit_card.h"
 #include "components/autofill/core/browser/personal_data_manager.h"
 #include "components/payments/core/currency_formatter.h"
+#include "components/payments/core/payment_request_data_util.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/web/public/payments/payment_request.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 PaymentRequest::PaymentRequest(
     const web::PaymentRequest& web_payment_request,
     autofill::PersonalDataManager* personal_data_manager)
@@ skipping 53 matching lines @@
   // TODO(crbug.com/602666): Implement prioritization rules for shipping and
   // contact profiles.
 
   if (!shipping_profiles_.empty())
     selected_shipping_profile_ = shipping_profiles_[0];
   if (!contact_profiles_.empty())
     selected_contact_profile_ = contact_profiles_[0];
 }
 
 void PaymentRequest::PopulateCreditCardCache() {
-  for (const auto& method_data : web_payment_request_.method_data) {
-    for (const std::string& supported_method : method_data.supported_methods) {
-      supported_card_networks_.push_back(supported_method);
-    }
+  if (!payments::data_util::ParseBasicCardSupportedNetworks(
+          web_payment_request_.method_data, &supported_card_networks_,
+          &basic_card_specified_networks_)) {
+    // TODO(crbug.com/709036): close the UI and reject the promise since the
+    // data is invalid.
+    return;
   }
 
   const std::vector<autofill::CreditCard*>& credit_cards_to_suggest =
       personal_data_manager_->GetCreditCardsToSuggest();
   credit_card_cache_.reserve(credit_cards_to_suggest.size());
 
   // TODO(crbug.com/602666): Update the following logic to allow basic card

[Moe, 2017/04/06 20:51:03]

Could you please remove this comment now that we do support basic cards?

[Mathieu, 2017/04/06 21:04:41]

haha. good catch.

   // payment. https://w3c.github.io/webpayments-methods-card/
   // new PaymentRequest([{supportedMethods: ['basic-card'],
   //                      data: {supportedNetworks:['visa']}]}], ...);
 
   for (const auto* credit_card : credit_cards_to_suggest) {
     std::string spec_card_type =
         autofill::data_util::GetPaymentRequestData(credit_card->type())
             .basic_card_payment_type;
     if (std::find(supported_card_networks_.begin(),
                   supported_card_networks_.end(),
@@ skipping 20 matching lines @@
 
   selected_shipping_option_ = nullptr;
   for (auto* shipping_option : shipping_options_) {
     if (shipping_option->selected) {
       // If more than one option has |selected| set, the last one in the
       // sequence should be treated as the selected item.
       selected_shipping_option_ = shipping_option;
     }
   }
 }