// Copyright 2014 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.

#ifndef CHROME_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_SERVICE_IMPL_H_
#define CHROME_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_SERVICE_IMPL_H_

#include "base/gtest_prod_util.h"
#include "base/memory/singleton.h"
#include "base/strings/string16.h"
#include "chrome/browser/notifications/notification.h"
#include "content/public/browser/platform_notification_service.h"
#include "content/public/common/persistent_notification_status.h"

class NotificationDelegate;
class NotificationUIManager;
class Profile;

// The platform notification service is the profile-agnostic entry point through
// which Web Notifications can be controlled.
class PlatformNotificationServiceImpl
    : public content::PlatformNotificationService {
 public:
  // Returns the active instance of the service in the browser process. Safe to
  // be called from any thread.
  static PlatformNotificationServiceImpl* GetInstance();

  // To be called when a persistent notification has been clicked on. The
  // Service Worker associated with the registration will be started if
  // needed, on which the event will be fired. Must be called on the UI thread.
  void OnPersistentNotificationClick(
      content::BrowserContext* browser_context,
      int64 service_worker_registration_id,
      const std::string& notification_id,
      const GURL& origin,
      const content::PlatformNotificationData& notification_data,
      const base::Callback<void(content::PersistentNotificationStatus)>&
          callback) const;

  // Returns the Notification UI Manager through which notifications can be
  // displayed to the user. Can be overridden for testing.
  NotificationUIManager* GetNotificationUIManager() const;

  // content::PlatformNotificationService implementation.
  blink::WebNotificationPermission CheckPermission(
      content::ResourceContext* resource_context,
      const GURL& origin,
      int render_process_id) override;
  void DisplayNotification(
      content::BrowserContext* browser_context,
      const GURL& origin,
      const SkBitmap& icon,
      const content::PlatformNotificationData& notification_data,
      scoped_ptr<content::DesktopNotificationDelegate> delegate,
      int render_process_id,
      base::Closure* cancel_callback) override;
  void DisplayPersistentNotification(
      content::BrowserContext* browser_context,
      int64 service_worker_registration_id,
      const GURL& origin,
      const SkBitmap& icon,
      const content::PlatformNotificationData& notification_data,
      int render_process_id) override;
  void ClosePersistentNotification(
      content::BrowserContext* browser_context,
      const std::string& persistent_notification_id) override;

 private:
  friend struct DefaultSingletonTraits<PlatformNotificationServiceImpl>;
  friend class PlatformNotificationServiceBrowserTest;
  friend class PlatformNotificationServiceTest;
  FRIEND_TEST_ALL_PREFIXES(
      PlatformNotificationServiceTest, DisplayNameForOrigin);

  PlatformNotificationServiceImpl();
  ~PlatformNotificationServiceImpl() override;

  // Creates a new Web Notification-based Notification object.
  // TODO(peter): |delegate| can be a scoped_refptr, but properly passing this
  // through requires changing a whole lot of Notification constructor calls.
  Notification CreateNotificationFromData(
      Profile* profile,
      const GURL& origin,
      const SkBitmap& icon,
      const content::PlatformNotificationData& notification_data,
      NotificationDelegate* delegate,
      int render_process_id) const;

  // Overrides the Notification UI Manager to use to |manager|. Only to be
  // used by tests. Tests are responsible for cleaning up after themselves.
  void SetNotificationUIManagerForTesting(NotificationUIManager* manager);

  // Returns a display name for an origin in the process id, to be used in
  // permission infobar or on the frame of the notification toast. Different
  // from the origin itself when dealing with extensions.
  base::string16 DisplayNameForOriginInProcessId(Profile* profile,
                                                 const GURL& origin,
                                                 int process_id) const;

  // Weak reference. Ownership maintains with the test.
  NotificationUIManager* notification_ui_manager_for_tests_;

  DISALLOW_COPY_AND_ASSIGN(PlatformNotificationServiceImpl);
};

#endif  // CHROME_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_SERVICE_IMPL_H_