// Copyright 2013 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_CHROMEOS_LOGIN_APP_LAUNCH_CONTROLLER_H_
#define CHROME_BROWSER_CHROMEOS_LOGIN_APP_LAUNCH_CONTROLLER_H_

#include <string>

#include "base/basictypes.h"
#include "base/callback_forward.h"
#include "base/timer/timer.h"
#include "chrome/browser/chromeos/app_mode/kiosk_app_launch_error.h"
#include "chrome/browser/chromeos/app_mode/kiosk_profile_loader.h"
#include "chrome/browser/chromeos/app_mode/startup_app_launcher.h"
#include "chrome/browser/chromeos/login/app_launch_signin_screen.h"
#include "chrome/browser/chromeos/login/screens/app_launch_splash_screen_actor.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"

class Profile;

namespace chromeos {

class LoginDisplayHost;
class OobeDisplay;
class UserManager;

// Controller for the kiosk app launch process, responsible for
// coordinating loading the kiosk profile, launching the app, and
// updating the splash screen UI.
class AppLaunchController
    : public AppLaunchSplashScreenActor::Delegate,
      public KioskProfileLoader::Delegate,
      public StartupAppLauncher::Delegate,
      public AppLaunchSigninScreen::Delegate,
      public content::NotificationObserver {
 public:
  typedef base::Callback<bool()> ReturnBoolCallback;

  AppLaunchController(const std::string& app_id,
                      bool diagnostic_mode,
                      LoginDisplayHost* host,
                      OobeDisplay* oobe_display);

  ~AppLaunchController() override;

  // Starts launching an app - set |auto_launch| to true if the app is being
  // auto-launched with zero delay.
  void StartAppLaunch(bool auto_launch);

  bool waiting_for_network() { return waiting_for_network_; }
  bool network_wait_timedout() { return network_wait_timedout_; }
  bool showing_network_dialog() { return showing_network_dialog_; }

  // Customize controller for testing purposes.
  static void SkipSplashWaitForTesting();
  static void SetNetworkTimeoutCallbackForTesting(base::Closure* callback);
  static void SetNetworkWaitForTesting(int wait_time_secs);
  static void SetCanConfigureNetworkCallbackForTesting(
      ReturnBoolCallback* can_configure_network_callback);
  static void SetNeedOwnerAuthToConfigureNetworkCallbackForTesting(
      ReturnBoolCallback* need_owner_auth_callback);

 private:
  // A class to watch app window creation.
  class AppWindowWatcher;

  void ClearNetworkWaitTimer();
  void CleanUp();
  void OnNetworkWaitTimedout();

  // Callback of AppWindowWatcher to notify an app window is created.
  void OnAppWindowCreated();

  // Whether the network could be configured during launching.
  bool CanConfigureNetwork();

  // Whether the owner password is needed to configure network.
  bool NeedOwnerAuthToConfigureNetwork();

  // Show network configuration UI if it is allowed. For consumer mode,
  // owner password might be checked before showing the network configure UI.
  void MaybeShowNetworkConfigureUI();

  // KioskProfileLoader::Delegate overrides:
  void OnProfileLoaded(Profile* profile) override;
  void OnProfileLoadFailed(KioskAppLaunchError::Error error) override;

  // AppLaunchSplashScreenActor::Delegate overrides:
  void OnConfigureNetwork() override;
  void OnCancelAppLaunch() override;
  void OnNetworkConfigRequested(bool requested) override;
  void OnNetworkStateChanged(bool online) override;

  // StartupAppLauncher::Delegate overrides:
  void InitializeNetwork() override;
  bool IsNetworkReady() override;
  void OnLoadingOAuthFile() override;
  void OnInitializingTokenService() override;
  void OnInstallingApp() override;
  void OnReadyToLaunch() override;
  void OnLaunchSucceeded() override;
  void OnLaunchFailed(KioskAppLaunchError::Error error) override;
  bool IsShowingNetworkConfigScreen() override;

  // AppLaunchSigninScreen::Delegate overrides:
  void OnOwnerSigninSuccess() override;

  // content::NotificationObserver overrides:
  void Observe(int type,
               const content::NotificationSource& source,
               const content::NotificationDetails& details) override;

  Profile* profile_;
  const std::string app_id_;
  const bool diagnostic_mode_;
  LoginDisplayHost* host_;
  OobeDisplay* oobe_display_;
  AppLaunchSplashScreenActor* app_launch_splash_screen_actor_;
  scoped_ptr<KioskProfileLoader> kiosk_profile_loader_;
  scoped_ptr<StartupAppLauncher> startup_app_launcher_;
  scoped_ptr<AppLaunchSigninScreen> signin_screen_;
  scoped_ptr<AppWindowWatcher> app_window_watcher_;

  content::NotificationRegistrar registrar_;
  bool webui_visible_;
  bool launcher_ready_;

  // A timer to ensure the app splash is shown for a minimum amount of time.
  base::OneShotTimer<AppLaunchController> splash_wait_timer_;

  base::OneShotTimer<AppLaunchController> network_wait_timer_;
  bool waiting_for_network_;
  bool network_wait_timedout_;
  bool showing_network_dialog_;
  bool network_config_requested_;
  int64 launch_splash_start_time_;

  static bool skip_splash_wait_;
  static int network_wait_time_;
  static base::Closure* network_timeout_callback_;
  static ReturnBoolCallback* can_configure_network_callback_;
  static ReturnBoolCallback* need_owner_auth_to_configure_network_callback_;

  DISALLOW_COPY_AND_ASSIGN(AppLaunchController);
};

}  // namespace chromeos

#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_APP_LAUNCH_CONTROLLER_H_