Add mediator and view for ShopCard

Bug: 374170663
Change-Id: Ied62c1e99cf07800118f3f8f1a281be59ffbb211
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6232968
Auto-Submit: Gloria Fang <gloriafang@google.com>
Reviewed-by: Chris Lu <thegreenfrog@chromium.org>
Commit-Queue: Chris Lu <thegreenfrog@chromium.org>
Reviewed-by: David Maunder <davidjm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1416945}

ios/chrome/browser/ui/content_suggestions/magic_stack/BUILD.gn

@@ -265,6 +265,7 @@ source_set("unit_tests") {
     "//ios/chrome/browser/ui/content_suggestions/safety_check",
     "//ios/chrome/browser/ui/content_suggestions/set_up_list",
     "//ios/chrome/browser/ui/content_suggestions/set_up_list:utils",
+    "//ios/chrome/browser/ui/content_suggestions/shop_card:unit_tests",
     "//ios/chrome/browser/ui/content_suggestions/tab_resumption",
     "//ios/chrome/browser/ui/content_suggestions/tips",
     "//ios/chrome/browser/url_loading/model",

ios/chrome/browser/ui/content_suggestions/shop_card/BUILD.gn

@@ -1,7 +1,12 @@
 source_set("shop_card") {
   sources = [
+    "shop_card_commands.h",
     "shop_card_item.h",
     "shop_card_item.mm",
+    "shop_card_mediator.h",
+    "shop_card_mediator.mm",
+    "shop_card_view.h",
+    "shop_card_view.mm",
   ]
   deps = [
     ":shop_card_data",
@@ -18,3 +23,20 @@ source_set("shop_card_data") {
   ]
   deps = []
 }
+
+source_set("unit_tests") {
+  testonly = true
+  sources = [
+    "shop_card_mediator+testing.h",
+    "shop_card_mediator_unittest.mm",
+  ]
+  deps = [
+    ":shop_card",
+    "//components/commerce/core:shopping_service_test_support",
+    "//ios/chrome/browser/shared/public/commands:commands",
+    "//ios/chrome/test:test_support",
+    "//ios/web/public/test",
+    "//testing/gtest",
+    "//third_party/ocmock",
+  ]
+}

ios/chrome/browser/ui/content_suggestions/shop_card/OWNERS

@@ -0,0 +1,2 @@
+davidjm@chromium.org
+gloriafang@google.com

ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_commands.h

@@ -0,0 +1,11 @@
+// Copyright 2025 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_COMMANDS_H_
+#define IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_COMMANDS_H_
+
+// Command protocol for events of ShopCard module.
+@protocol ShopCardCommands
+@end
+#endif  // IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_COMMANDS_H_

ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_mediator+testing.h

@@ -0,0 +1,27 @@
+// Copyright 2025 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_MEDIATOR_TESTING_H_
+#define IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_MEDIATOR_TESTING_H_
+
+#import "ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_mediator.h"
+
+@class ShopCardItem;
+
+namespace commerce {
+class ShoppingService;
+}  // namespace commerce
+
+// Category for exposing internal state for testing.
+@interface ShopCardMediator (ForTesting)
+
+- (commerce::ShoppingService*)shoppingServiceForTesting;
+
+- (ShopCardItem*)shopCardItemForTesting;
+
+- (void)setShopCardItemForTesting:(ShopCardItem*)item;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_MEDIATOR_TESTING_H_

ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_mediator.h

@@ -0,0 +1,45 @@
+// Copyright 2025 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_MEDIATOR_H_
+#define IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_MEDIATOR_H_
+
+#import <UIKit/UIKit.h>
+
+#import "ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_commands.h"
+
+namespace commerce {
+class ShoppingService;
+}
+
+@class ShopCardItem;
+@class ShopCardData;
+
+// Delegate to communicate events back to owner of ShopCardMediator.
+@protocol ShopCardMediatorDelegate
+- (void)removeShopCard;
+@end
+
+@interface ShopCardMediator : NSObject <ShopCardCommands>
+
+// Default initializer.
+- (instancetype)initWithShoppingService:
+    (commerce::ShoppingService*)shoppingService NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)init NS_UNAVAILABLE;
+
+- (void)disconnect;
+
+- (void)reset;
+
+- (void)disableModule;
+
+- (ShopCardItem*)shopCardItemToShow;
+
+// Delegate used to communicate events back to the owner of this class.
+@property(nonatomic, weak) id<ShopCardMediatorDelegate> delegate;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_MEDIATOR_H_

ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_mediator.mm

@@ -0,0 +1,80 @@
+// Copyright 2025 The Chromium Authors
+// 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/content_suggestions/shop_card/shop_card_mediator.h"
+
+#import "base/memory/raw_ptr.h"
+#import "ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_data.h"
+#import "ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_item.h"
+
+@implementation ShopCardMediator {
+  raw_ptr<commerce::ShoppingService> _shoppingService;
+  ShopCardItem* _shopCardItem;
+}
+
+- (instancetype)initWithShoppingService:
+    (commerce::ShoppingService*)shoppingService {
+  self = [super init];
+  if (self) {
+    _shoppingService = shoppingService;
+  }
+  return self;
+}
+
+- (void)disconnect {
+  _shoppingService = nil;
+}
+
+- (void)reset {
+  _shopCardItem = nil;
+}
+
+- (void)setDelegate:(id<ShopCardMediatorDelegate>)delegate {
+  _delegate = delegate;
+  if (_delegate) {
+    [self fetchLatestShopCardItem];
+  }
+}
+
+- (void)fetchLatestShopCardItem {
+  // Populate the item if it is not already initialized.
+  // This is a placeholder and may get replaced when we fetch actual data.
+  if (self->_shopCardItem.shopCardData) {
+    return;
+  }
+  _shopCardItem = [[ShopCardItem alloc] init];
+  _shopCardItem.shopCardData = [[ShopCardData alloc] init];
+  // TODO: crbug.com/394638800 - set this to the correct type based on
+  // experiment.
+  _shopCardItem.shopCardData.shopCardItemType = ShopCardItemType::kUnknown;
+}
+
+- (ShopCardItem*)shopCardItemToShow {
+  return _shopCardItem;
+}
+
+#pragma mark - Public
+- (void)disableModule {
+}
+
+#pragma mark - ShopCardMediatorDelegate
+
+- (void)removeShopCard {
+  [self disableModule];
+}
+
+#pragma mark - Testing category methods
+- (commerce::ShoppingService*)shoppingServiceForTesting {
+  return self->_shoppingService;
+}
+
+- (void)setShopCardItemForTesting:(ShopCardItem*)item {
+  self->_shopCardItem = item;
+}
+
+- (ShopCardItem*)shopCardItemForTesting {
+  return self->_shopCardItem;
+}
+
+@end

ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_mediator_unittest.mm

@@ -0,0 +1,59 @@
+// Copyright 2025 The Chromium Authors
+// 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/content_suggestions/shop_card/shop_card_mediator.h"
+
+#import "base/strings/sys_string_conversions.h"
+#import "components/commerce/core/mock_shopping_service.h"
+#import "ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_item.h"
+#import "ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_mediator+testing.h"
+#import "ios/web/public/test/web_task_environment.h"
+#import "testing/gtest/include/gtest/gtest.h"
+#import "testing/gtest_mac.h"
+#import "testing/platform_test.h"
+#import "third_party/ocmock/OCMock/OCMock.h"
+#import "third_party/ocmock/gtest_support.h"
+
+class ShopCardMediatorTest : public PlatformTest {
+ public:
+  ShopCardMediatorTest() {
+    shopping_service_ = std::make_unique<commerce::MockShoppingService>();
+    mediator_ = [[ShopCardMediator alloc]
+        initWithShoppingService:shopping_service_.get()];
+  }
+
+  ~ShopCardMediatorTest() override {}
+
+  void TearDown() override { [mediator_ disconnect]; }
+
+  ShopCardMediator* mediator() { return mediator_; }
+
+ protected:
+  std::unique_ptr<commerce::MockShoppingService> shopping_service_;
+  ShopCardMediator* mediator_;
+  web::WebTaskEnvironment task_environment_;
+};
+
+// Test disconnecting the mediator.
+TEST_F(ShopCardMediatorTest, TestDisconnect) {
+  EXPECT_NE(nil, mediator().shoppingServiceForTesting);
+  [mediator() disconnect];
+  EXPECT_EQ(nil, mediator().shoppingServiceForTesting);
+}
+
+// Resets card.
+TEST_F(ShopCardMediatorTest, TestReset) {
+  ShopCardItem* item = [[ShopCardItem alloc] init];
+  [mediator() setShopCardItemForTesting:item];
+  EXPECT_NE(nil, mediator().shopCardItemForTesting);
+  [mediator() reset];
+  EXPECT_EQ(nil, mediator().shopCardItemForTesting);
+}
+
+TEST_F(ShopCardMediatorTest, TestRemoveShopCard) {
+  id mockDelegate = OCMStrictProtocolMock(@protocol(ShopCardMediatorDelegate));
+  OCMExpect([mockDelegate removeShopCard]);
+  mediator().delegate = mockDelegate;
+  [mediator() disableModule];
+}

ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_view.h

@@ -0,0 +1,25 @@
+// Copyright 2025 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_VIEW_H_
+#define IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_VIEW_H_
+
+#import <UIKit/UIKit.h>
+
+@protocol ShopCardCommands;
+@class ShopCardItem;
+
+@interface ShopCardModuleView : UIView
+
+- (instancetype)initWithFrame;
+
+// Configures this view with `config`.
+- (void)configureView:(ShopCardItem*)config;
+
+// Command handler for user events.
+@property(nonatomic, weak) id<ShopCardCommands> commandHandler;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_SHOP_CARD_SHOP_CARD_VIEW_H_

ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_view.mm

@@ -0,0 +1,28 @@
+// Copyright 2025 The Chromium Authors
+// 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/content_suggestions/shop_card/shop_card_view.h"
+
+#import "ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_data.h"
+#import "ios/chrome/browser/ui/content_suggestions/shop_card/shop_card_item.h"
+
+@implementation ShopCardModuleView {
+}
+
+- (instancetype)initWithFrame {
+  self = [super initWithFrame:CGRectZero];
+  return self;
+}
+
+- (void)configureView:(ShopCardItem*)config {
+  if (config.shopCardData.shopCardItemType ==
+      ShopCardItemType::kPriceDropOnTab) {
+    // TODO: crbug.com/394638800 - render correct view when data available
+  } else if (config.shopCardData.shopCardItemType ==
+             ShopCardItemType::kReviews) {
+    // TODO: crbug.com/394638800 - render correct view when data available
+  }
+}
+
+@end