/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sts=2 sw=2 et cin: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#pragma once

// Moz headers (alphabetical)

// System headers (alphabetical)
#include <windows.h>  // HINSTANCE, HANDLE
#include <wlanapi.h>  // Wlan* functions

class WinWLANLibrary {
 public:
  static WinWLANLibrary* Load();
  ~WinWLANLibrary();

  HANDLE GetWLANHandle() const;
  decltype(::WlanEnumInterfaces) * GetWlanEnumInterfacesPtr() const;
  decltype(::WlanGetNetworkBssList) * GetWlanGetNetworkBssListPtr() const;
  decltype(::WlanFreeMemory) * GetWlanFreeMemoryPtr() const;
  decltype(::WlanCloseHandle) * GetWlanCloseHandlePtr() const;
  decltype(::WlanOpenHandle) * GetWlanOpenHandlePtr() const;
  decltype(::WlanRegisterNotification) * GetWlanRegisterNotificationPtr() const;
  decltype(::WlanScan) * GetWlanScanPtr() const;

 private:
  WinWLANLibrary();
  bool Initialize();

  HMODULE mWlanLibrary;
  HANDLE mWlanHandle;
  decltype(::WlanEnumInterfaces)* mWlanEnumInterfacesPtr;
  decltype(::WlanGetNetworkBssList)* mWlanGetNetworkBssListPtr;
  decltype(::WlanFreeMemory)* mWlanFreeMemoryPtr;
  decltype(::WlanCloseHandle)* mWlanCloseHandlePtr;
  decltype(::WlanOpenHandle)* mWlanOpenHandlePtr;
  decltype(::WlanRegisterNotification)* mWlanRegisterNotificationPtr;
  decltype(::WlanScan)* mWlanScanPtr;
};

class ScopedWLANObject {
 public:
  ScopedWLANObject(WinWLANLibrary* library, void* object)
      : mLibrary(library), mObject(object) {}

  ~ScopedWLANObject() { (*(mLibrary->GetWlanFreeMemoryPtr()))(mObject); }

 private:
  WinWLANLibrary* mLibrary;
  void* mObject;
};