/*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
**]  All rights reserved.
*
* vi:ts=4 sw=4 tw=75
*
* Distributable under the terms and conditions of the 2-clause BSD license;
* see the file COPYING for a complete text of the license.
*
**************************************************************************/

#include <SDL/SDL.h>
#include "fastevents.h"

#include "Backend.hh"
#include "Error.hh"
#include "Log.hh"


namespace Mf {


struct Impl
{
	static Error	error;
	static int		retainCount;
};

Error	Impl::error(Error::UNINITIALIZED);
int		Impl::retainCount = 0;


Backend::Backend()
{
	if (Impl::retainCount++ == 0)
	{
#if defined(_WIN32)
		if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) != 0)
#else
		if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTTHREAD) != 0)
#endif
		{
			const char* error = SDL_GetError();
			Impl::error.init(Error::SDL_INIT, error);
			return; // fatal
		}
		else
		{
			char name[128];
			SDL_VideoDriverName(name, sizeof(name));
			logInfo << "initialized SDL; using video driver `"
					<< name << "'" << std::endl;
		}

		if (FE_Init() != 0)
		{
			const char* error = FE_GetError();
			Impl::error.init(Error::FASTEVENTS_INIT, error);
			return; // fatal
		}

		Impl::error.init(Error::NONE);
	}
}

Backend::Backend(const Backend& backend)
{
	++Impl::retainCount;
}

Backend::~Backend()
{
	if (--Impl::retainCount == 0)
	{
		FE_Quit();
		SDL_Quit();

		Impl::error.reset();
	}
}

bool Backend::isInitialized()
{
	return Impl::error.code() == Error::NONE;
}

const Error& Backend::getError()
{
	return Impl::error;
}


} // namespace Mf