// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.


// 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:    FrameTools.cpp         StartGame
// Core          BootManager.cpp        BootCore
//               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 "Volume.h"
#include "VolumeCreator.h"
#include "ConfigManager.h"
#include "SysConf.h"
#include "Core.h"
#include "Host.h"
#include "VideoBackendBase.h"
#include "Movie.h"

namespace BootManager
{

// 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, bDCBZOFF,
		bVBeamSpeedHack, bSyncGPU, bFastDiscSpeed, bMergeBlocks, bDSPHLE, bHLE_BS2;
	int iTLBHack, iCPUCore;
	std::string strBackend;
};
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
	Host_SetStartupDebuggingParameters();

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

	StartUp.hInstance = Host_GetInstance();

	// 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 = 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.iCPUCore = StartUp.iCPUCore;
		config_cache.bEnableFPRF = StartUp.bEnableFPRF;
		config_cache.bMMU = StartUp.bMMU;
		config_cache.bDCBZOFF = StartUp.bDCBZOFF;
		config_cache.iTLBHack = StartUp.iTLBHack;
		config_cache.bVBeamSpeedHack = StartUp.bVBeamSpeedHack;
		config_cache.bSyncGPU = StartUp.bSyncGPU;
		config_cache.bFastDiscSpeed = StartUp.bFastDiscSpeed;
		config_cache.bMergeBlocks = StartUp.bMergeBlocks;
		config_cache.bDSPHLE = StartUp.bDSPHLE;
		config_cache.strBackend = StartUp.m_strVideoBackend;
		config_cache.bHLE_BS2 = StartUp.bHLE_BS2;

		// 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", "TLBHack",				&StartUp.iTLBHack, StartUp.iTLBHack);
		game_ini.Get("Core", "DCBZ",				&StartUp.bDCBZOFF, StartUp.bDCBZOFF);
		game_ini.Get("Core", "VBeam",				&StartUp.bVBeamSpeedHack, StartUp.bVBeamSpeedHack);
		game_ini.Get("Core", "SyncGPU",				&StartUp.bSyncGPU, StartUp.bSyncGPU);
		game_ini.Get("Core", "FastDiscSpeed",		&StartUp.bFastDiscSpeed, StartUp.bFastDiscSpeed);
		game_ini.Get("Core", "BlockMerging",		&StartUp.bMergeBlocks, StartUp.bMergeBlocks);
		game_ini.Get("Core", "DSPHLE",				&StartUp.bDSPHLE, StartUp.bDSPHLE);
		game_ini.Get("Core", "GFXBackend", &StartUp.m_strVideoBackend, StartUp.m_strVideoBackend.c_str());
		game_ini.Get("Core", "CPUCore",				&StartUp.iCPUCore, StartUp.iCPUCore);
		game_ini.Get("Core", "HLE_BS2",				&StartUp.bHLE_BS2, StartUp.bHLE_BS2);
		VideoBackend::ActivateBackend(StartUp.m_strVideoBackend);

		// Wii settings
		if (StartUp.bWii)
		{
			// Flush possible changes to SYSCONF to file
			SConfig::GetInstance().m_SYSCONF->Save();
		}
	} 

	// movie settings
	if (Movie::IsPlayingInput() && Movie::IsConfigSaved())
	{
		StartUp.bCPUThread = Movie::IsDualCore();
		StartUp.bSkipIdle = Movie::IsSkipIdle();
		StartUp.bDSPHLE = Movie::IsDSPHLE();
		StartUp.bProgressive = Movie::IsProgressive();
		StartUp.bFastDiscSpeed = Movie::IsFastDiscSpeed();
		StartUp.iCPUCore = Movie::GetCPUMode();
		StartUp.bSyncGPU = Movie::IsSyncGPU();
		if (Movie::IsUsingMemcard() && Movie::IsStartingFromClearSave() && !StartUp.bWii)
		{
			if (File::Exists(File::GetUserPath(D_GCUSER_IDX) + "Movie.raw"))
				File::Delete(File::GetUserPath(D_GCUSER_IDX) + "Movie.raw");
		}
	}

	// Run the game
	// Init the core
	if (!Core::Init())
	{
		PanicAlertT("Couldn't init the core.\nCheck your configuration.");
		return false;
	}

	return true;
}

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

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

	StartUp.m_strUniqueID = "00000000";
	if (config_cache.valid)
	{
		config_cache.valid = false;
		StartUp.bCPUThread = config_cache.bCPUThread;
		StartUp.bSkipIdle = config_cache.bSkipIdle;
		StartUp.iCPUCore = config_cache.iCPUCore;
		StartUp.bEnableFPRF = config_cache.bEnableFPRF;
		StartUp.bMMU = config_cache.bMMU;
		StartUp.bDCBZOFF = config_cache.bDCBZOFF;
		StartUp.iTLBHack = config_cache.iTLBHack;
		StartUp.bVBeamSpeedHack = config_cache.bVBeamSpeedHack;
		StartUp.bSyncGPU = config_cache.bSyncGPU;
		StartUp.bFastDiscSpeed = config_cache.bFastDiscSpeed;
		StartUp.bMergeBlocks = config_cache.bMergeBlocks;
		StartUp.bDSPHLE = config_cache.bDSPHLE;
		StartUp.m_strVideoBackend = config_cache.strBackend;
		VideoBackend::ActivateBackend(StartUp.m_strVideoBackend);
		StartUp.bHLE_BS2 = config_cache.bHLE_BS2;
	}
}

} // namespace