// 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_APP_MODE_STARTUP_APP_LAUNCHER_H_
#define CHROME_BROWSER_CHROMEOS_APP_MODE_STARTUP_APP_LAUNCHER_H_

#include <string>

#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/timer.h"
#include "net/base/network_change_notifier.h"
#include "ui/base/events/event_handler.h"

class Profile;

namespace extensions {
class WebstoreStandaloneInstaller;
}

namespace chromeos {

// Launches the app at startup. The flow roughly looks like this:
// - Starts the app launch splash screen;
// - Checks if the app is installed in user profile (aka app profile);
// - If the app is installed, launch it and finish the flow;
// - If not installed, prepare to start install by checking network online
//   state;
// - If network gets online in time, start to install the app from web store;
// - If all goes good, launches the app and finish the flow;
// If anything goes wrong, it exits app mode and goes back to login screen.
class StartupAppLauncher
    : public base::SupportsWeakPtr<StartupAppLauncher>,
      public net::NetworkChangeNotifier::ConnectionTypeObserver,
      public ui::EventHandler {
 public:
  StartupAppLauncher(Profile* profile, const std::string& app_id);
  virtual ~StartupAppLauncher();

  void Start();

 private:
  void OnLaunchSuccess();
  void OnLaunchFailure();

  void Launch();

  void BeginInstall();
  void InstallCallback(bool success, const std::string& error);

  void OnNetworkWaitTimedout();

  // net::NetworkChangeNotifier::ConnectionTypeObserver overrides:
  virtual void OnConnectionTypeChanged(
      net::NetworkChangeNotifier::ConnectionType type) OVERRIDE;

  // ui::EventHandler overrides:
  virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE;

  Profile* profile_;
  const std::string app_id_;

  int64 launch_splash_start_time_;

  scoped_refptr<extensions::WebstoreStandaloneInstaller> installer_;

  base::OneShotTimer<StartupAppLauncher> network_wait_timer_;

  DISALLOW_COPY_AND_ASSIGN(StartupAppLauncher);
};

}  // namespace chromeos

#endif  // CHROME_BROWSER_CHROMEOS_APP_MODE_STARTUP_APP_LAUNCHER_H_