[Payment Request] CanMakePayment

ios/chrome/browser/ui/payments/payment_request_manager.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/ui/payments/payment_request_manager.h"
 
+#include <string>
+
 #include "base/ios/block_types.h"
 #include "base/ios/ios_util.h"
 #import "base/mac/bind_objc_block.h"
 #include "base/mac/foundation_util.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string16.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #import "base/values.h"
 #include "components/autofill/core/browser/autofill_country.h"
 #include "components/autofill/core/browser/autofill_data_util.h"
 #include "components/autofill/core/browser/autofill_manager.h"
 #include "components/autofill/core/browser/credit_card.h"
 #include "components/autofill/core/browser/personal_data_manager.h"
 #include "components/autofill/ios/browser/autofill_driver_ios.h"
 #include "components/payments/core/address_normalization_manager.h"
+#include "components/payments/core/can_make_payment_query.h"
 #include "components/payments/core/payment_address.h"
 #include "components/payments/core/payment_request_base_delegate.h"
 #include "components/payments/core/payment_request_data_util.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/chrome/browser/autofill/personal_data_manager_factory.h"
 #include "ios/chrome/browser/autofill/validation_rules_storage_factory.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
+#include "ios/chrome/browser/payments/ios_can_make_payment_query_factory.h"
 #include "ios/chrome/browser/payments/payment_request.h"
 #include "ios/chrome/browser/procedural_block_types.h"
 #import "ios/chrome/browser/ui/commands/UIKit+ChromeExecuteCommand.h"
 #import "ios/chrome/browser/ui/commands/generic_chrome_command.h"
 #import "ios/chrome/browser/ui/commands/ios_command_ids.h"
 #import "ios/chrome/browser/ui/payments/js_payment_request_manager.h"
 #import "ios/chrome/browser/ui/payments/payment_request_coordinator.h"
 #include "ios/chrome/browser/ui/toolbar/toolbar_model_ios.h"
 #include "ios/web/public/favicon_status.h"
 #include "ios/web/public/navigation_item.h"
@@ skipping 357 matching lines @@
   }
 
   // TODO(crbug.com/711419): make sure multiple PaymentRequests can be active
   // simultaneously.
   if (_paymentRequest &&
       (_paymentRequest->web_payment_request() == webPaymentRequest)) {
     return YES;
   }
 
   _paymentRequest = base::MakeUnique<PaymentRequest>(
-      webPaymentRequest, _personalDataManager, self);
+      webPaymentRequest, _browserState, _personalDataManager, self);
 
   return YES;
 }
 
 - (BOOL)handleRequestShow:(const base::DictionaryValue&)message {
   // TODO(crbug.com/602666): check that there's not already a pending request.
   // TODO(crbug.com/602666): compare our supported payment types (i.e. autofill
   //   credit card types) against the merchant supported types and return NO
   //   if the intersection is empty.
 
@@ skipping 50 matching lines @@
                                       callback:cancellationCallback];
   };
 
   [_paymentRequestCoordinator displayErrorWithCallback:callback];
 
   return YES;
 }
 
 - (BOOL)handleCanMakePayment:(const base::DictionaryValue&)message {
   if (![self createPaymentRequestFromMessage:message]) {
-    return NO;
+    // TODO(crbug.com/602666): Reject the promise with an error of
+    // "InvalidStateError" type.
+    [_paymentRequestJsManager
+        rejectCanMakePaymentPromiseWithErrorMessage:@"Invalid state error"
+                                  completionHandler:nil];
+    return YES;
   }
 
-  // TODO(crbug.com/602666): reject the promise if quota (TBD) was exceeded.
+  if (_paymentRequest->IsIncognito()) {
+    [_paymentRequestJsManager resolveCanMakePaymentPromiseWithValue:YES
+                                                  completionHandler:nil];
+    return YES;
+  }
 
-  [_paymentRequestJsManager
-      resolveCanMakePaymentPromiseWithValue:_paymentRequest->CanMakePayment()
-                          completionHandler:nil];
+  BOOL canMakePayment = _paymentRequest->CanMakePayment();
 
+  payments::CanMakePaymentQuery* canMakePaymentQuery =
+      IOSCanMakePaymentQueryFactory::GetInstance()->GetForBrowserState(
+          _browserState);
+  DCHECK(canMakePaymentQuery);
+  if (canMakePaymentQuery->CanQuery(
+          [self webState]->GetLastCommittedURL().GetOrigin(),
+          _paymentRequest->stringified_method_data())) {
+    [_paymentRequestJsManager
+        resolveCanMakePaymentPromiseWithValue:canMakePayment
+                            completionHandler:nil];
+    // TODO(crbug.com/602666): Warn on console if origin is localhost or file.
+  } else {
+    [_paymentRequestJsManager
+        rejectCanMakePaymentPromiseWithErrorMessage:
+            @"Not allowed to check whether can make payment"
+                                  completionHandler:nil];
+  }
   return YES;
 }
 
 - (BOOL)displayErrorThenCancelRequest {
   // TODO(crbug.com/602666): Check that there is already a pending request.
 
   [_unblockEventQueueTimer invalidate];
   [_paymentResponseTimeoutTimer invalidate];
   [_updateEventTimeoutTimer invalidate];
 
@@ skipping 282 matching lines @@
 #pragma mark - CRWWebStateObserver methods
 
 - (void)webState:(web::WebState*)webState
     didCommitNavigationWithDetails:
         (const web::LoadCommittedDetails&)load_details {
   [self dismissUI];
   [self enableCurrentWebState];
 }
 
 @end