// Copyright (C) 2003 Dolphin Project.

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/

// File description
// -------------
// Purpose of this file: Collect boot settings for Core::Init()

// Call sequence: This file has one of the first function called when a game is booted,
// the boot sequence in the code is:
  
// DolphinWX:    GameListCtrl.cpp       OnActivated
//               BootManager.cpp        BootCore
// Core          Core.cpp               Init                     Thread creation
//                                      EmuThread                Calls CBoot::BootUp
//               Boot.cpp               CBoot::BootUp()
//                                      CBoot::EmulatedBS2_Wii() / GC() or Load_BS2()


// Includes
// ----------------
#include <string>
#include <vector>

#include "Common.h"
#include "IniFile.h"
#include "BootManager.h"
#include "ISOFile.h"
#include "Volume.h"
#include "VolumeCreator.h"
#include "ConfigManager.h"
#include "SysConf.h"
#include "Core.h"
#if defined(HAVE_WX) && HAVE_WX
	#include "Globals.h"
	#include "ConfigMain.h"
	#include "Frame.h"
	#include "CodeWindow.h"
	#include "Setup.h"
#endif


#if defined(HAVE_WX) && HAVE_WX
extern CFrame* main_frame;
#endif

namespace BootManager
{
#ifdef _WIN32
	extern "C" HINSTANCE wxGetInstance();
#endif

// TODO this is an ugly hack which allows us to restore values trampled by per-game settings
// Apply fire liberally
struct ConfigCache
{
	bool valid, bCPUThread, bSkipIdle, bEnableFPRF, bMMU, bMMUBAT,
		bAlternateRFI, bFastDiscSpeed, bMergeBlocks;
	int iTLBHack;
};
static ConfigCache config_cache;

// Boot the ISO or file
bool BootCore(const std::string& _rFilename)
{
	SCoreStartupParameter& StartUp = SConfig::GetInstance().m_LocalCoreStartupParameter;

	// Use custom settings for debugging mode
	#if defined(HAVE_WX) && HAVE_WX		
		if (main_frame->g_pCodeWindow)
		{
			StartUp.bBootToPause = main_frame->g_pCodeWindow->BootToPause();
			StartUp.bAutomaticStart = main_frame->g_pCodeWindow->AutomaticStart();
			StartUp.bJITNoBlockCache = main_frame->g_pCodeWindow->JITNoBlockCache();
			StartUp.bJITBlockLinking = main_frame->g_pCodeWindow->JITBlockLinking();
		}
		StartUp.bEnableDebugging = main_frame->g_pCodeWindow ? true : false; // RUNNING_DEBUG
	#endif 

	StartUp.m_BootType = SCoreStartupParameter::BOOT_ISO;
	StartUp.m_strFilename = _rFilename;
	SConfig::GetInstance().m_LastFilename = _rFilename;
	StartUp.bRunCompareClient = false;
	StartUp.bRunCompareServer = false;

	#ifdef _WIN32
		StartUp.hInstance = wxGetInstance();
		#ifdef _M_X64
			StartUp.bUseFastMem = true;
		#endif
	#endif

	// If for example the ISO file is bad we return here
	if (!StartUp.AutoSetup(SCoreStartupParameter::BOOT_DEFAULT)) return false;

	// Load game specific settings
	IniFile game_ini;
	std::string unique_id = StartUp.GetUniqueID();
	StartUp.m_strGameIni = std::string(File::GetUserPath(D_GAMECONFIG_IDX)) + unique_id + ".ini";
	if (unique_id.size() == 6 && game_ini.Load(StartUp.m_strGameIni.c_str()))
	{
		config_cache.valid = true;
		config_cache.bCPUThread = StartUp.bCPUThread;
		config_cache.bSkipIdle = StartUp.bSkipIdle;
		config_cache.bEnableFPRF = StartUp.bEnableFPRF;
		config_cache.bMMU = StartUp.bMMU;
		config_cache.bMMUBAT = StartUp.bMMUBAT;
		config_cache.iTLBHack = StartUp.iTLBHack;
		config_cache.bAlternateRFI = StartUp.bAlternateRFI;
		config_cache.bFastDiscSpeed = StartUp.bFastDiscSpeed;
		config_cache.bMergeBlocks = StartUp.bMergeBlocks;
		// General settings
		game_ini.Get("Core", "CPUThread",			&StartUp.bCPUThread, StartUp.bCPUThread);
		game_ini.Get("Core", "SkipIdle",			&StartUp.bSkipIdle, StartUp.bSkipIdle);
		game_ini.Get("Core", "EnableFPRF",			&StartUp.bEnableFPRF, StartUp.bEnableFPRF);
		game_ini.Get("Core", "MMU",					&StartUp.bMMU, StartUp.bMMU);
		game_ini.Get("Core", "BAT",					&StartUp.bMMUBAT, StartUp.bMMUBAT);
		game_ini.Get("Core", "TLBHack",				&StartUp.iTLBHack, StartUp.iTLBHack);
		game_ini.Get("Core", "AlternateRFI",		&StartUp.bAlternateRFI, StartUp.bAlternateRFI);
		game_ini.Get("Core", "FastDiscSpeed",		&StartUp.bFastDiscSpeed, StartUp.bFastDiscSpeed);
		game_ini.Get("Core", "BlockMerging",		&StartUp.bMergeBlocks, StartUp.bMergeBlocks);
		// Wii settings
		if (StartUp.bWii)
		{
			// Flush possible changes to SYSCONF to file
			SConfig::GetInstance().m_SYSCONF->Save();
		}
	} 

	// Run the game
#if defined(HAVE_WX) && HAVE_WX
	if(main_frame)
	{
		// Save the window handle of the eventual parent to the rendering window
		StartUp.hMainWindow = main_frame->GetRenderHandle();
	}
#endif
	// Init the core
	if (!Core::Init())
	{
		PanicAlertT("Couldn't init the core.\nCheck your configuration.");
		return false;
	}

#if defined(HAVE_WX) && HAVE_WX
	// Boot to pause or not
	Core::SetState((main_frame->g_pCodeWindow && StartUp.bBootToPause) ? Core::CORE_PAUSE : Core::CORE_RUN);
#else
	Core::SetState(Core::CORE_RUN);
#endif

	return true;
}

void Stop()
{
	Core::Stop();

	SCoreStartupParameter& StartUp = SConfig::GetInstance().m_LocalCoreStartupParameter;

	if (config_cache.valid)
	{
		config_cache.valid = false;
		StartUp.bCPUThread = config_cache.bCPUThread;
		StartUp.bSkipIdle = config_cache.bSkipIdle;
		StartUp.bEnableFPRF = config_cache.bEnableFPRF;
		StartUp.bMMU = config_cache.bMMU;
		StartUp.bMMUBAT = config_cache.bMMUBAT;
		StartUp.iTLBHack = config_cache.iTLBHack;
		StartUp.bAlternateRFI = config_cache.bAlternateRFI;
		StartUp.bFastDiscSpeed = config_cache.bFastDiscSpeed;
		StartUp.bMergeBlocks = config_cache.bMergeBlocks;
	}
}

} // namespace