// Copyright (c) 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 CHROMEOS_NETWORK_NETWORK_PROFILE_HANDLER_H_
#define CHROMEOS_NETWORK_NETWORK_PROFILE_HANDLER_H_

#include <string>
#include <vector>

#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "chromeos/chromeos_export.h"
#include "chromeos/dbus/dbus_method_call_status.h"
#include "chromeos/dbus/shill_property_changed_observer.h"
#include "chromeos/network/network_profile.h"

namespace base {
class DictionaryValue;
}

namespace chromeos {

class NetworkProfileObserver;

class CHROMEOS_EXPORT NetworkProfileHandler
    : public ShillPropertyChangedObserver {
 public:
  typedef std::vector<NetworkProfile> ProfileList;

  // Initializes the singleton and registers it for DBus events.
  static NetworkProfileHandler* Initialize();

  // Returns if the singleton is initialized.
  static bool IsInitialized();

  // Unregisters the singleton from DBus events and destroys it.
  static void Shutdown();

  // Initialize() must be called before this.
  static NetworkProfileHandler* Get();

  void AddObserver(NetworkProfileObserver* observer);
  void RemoveObserver(NetworkProfileObserver* observer);

  void RequestInitialProfileList();
  void GetManagerPropertiesCallback(DBusMethodCallStatus call_status,
                                    const base::DictionaryValue& properties);

  // ShillPropertyChangedObserver overrides
  virtual void OnPropertyChanged(const std::string& name,
                                 const base::Value& value) OVERRIDE;

  void GetProfilePropertiesCallback(const std::string& profile_path,
                                    const base::DictionaryValue& properties);

  const NetworkProfile* GetProfileForPath(
      const std::string& profile_path) const;
  const NetworkProfile* GetProfileForUserhash(
      const std::string& userhash) const;

 protected:
  // We make the de-/constructor protected to prevent their usage except in
  // tests by deriving a stub (see NetworkProfileHandlerStub). Outside of tests,
  // the singleton should be retrieved with the static Get() function.
  NetworkProfileHandler();
  virtual ~NetworkProfileHandler();

  void AddProfile(const NetworkProfile& profile);
  void RemoveProfile(const std::string& profile_path);

 private:
  ProfileList profiles_;
  ObserverList<NetworkProfileObserver> observers_;

 protected:
  // For Shill client callbacks
  base::WeakPtrFactory<NetworkProfileHandler> weak_ptr_factory_;

 private:
  DISALLOW_COPY_AND_ASSIGN(NetworkProfileHandler);
};

}  // namespace chromeos

#endif  // CHROMEOS_NETWORK_NETWORK_PROFILE_HANDLER_H_