// Copyright (c) 2012- PPSSPP 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 or later versions.

// 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 git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.

#include <cstdlib>
#include <ctime>

#include "base/display.h"
#include "base/NativeApp.h"
#include "ext/vjson/json.h"
#include "file/ini_file.h"
#include "i18n/i18n.h"
#include "gfx_es2/gpu_features.h"
#include "net/http_client.h"
#include "util/text/parsers.h"
#include "net/url.h"

#include "Common/CPUDetect.h"
#include "Common/KeyMap.h"
#include "Common/FileUtil.h"
#include "Common/StringUtils.h"
#include "Config.h"
#include "HLE/sceUtility.h"

#ifndef USING_QT_UI
extern const char *PPSSPP_GIT_VERSION; 
#endif

// TODO: Find a better place for this.
http::Downloader g_DownloadManager;

Config g_Config;

#ifdef IOS
extern bool iosCanUseJit;
#endif

struct ConfigSetting {
	enum Type {
		TYPE_TERMINATOR,
		TYPE_BOOL,
		TYPE_INT,
		TYPE_FLOAT,
		TYPE_STRING,
	};
	union Value {
		bool b;
		int i;
		float f;
		const char *s;
	};
	union SettingPtr {
		bool *b;
		int *i;
		float *f;
		std::string *s;
	};

	typedef bool (*BoolDefaultCallback)();
	typedef int (*IntDefaultCallback)();
	typedef float (*FloatDefaultCallback)();
	typedef const char *(*StringDefaultCallback)();

	union Callback {
		BoolDefaultCallback b;
		IntDefaultCallback i;
		FloatDefaultCallback f;
		StringDefaultCallback s;
	};

	ConfigSetting(bool v)
		: ini_(""), type_(TYPE_TERMINATOR), report_(false), save_(false) {
		ptr_.b = NULL;
		cb_.b = NULL;
	}

	ConfigSetting(const char *ini, bool *v, bool def, bool save = true)
		: ini_(ini), type_(TYPE_BOOL), report_(false), save_(save) {
		ptr_.b = v;
		cb_.b = NULL;
		default_.b = def;
	}

	ConfigSetting(const char *ini, int *v, int def, bool save = true)
		: ini_(ini), type_(TYPE_INT), report_(false), save_(save) {
		ptr_.i = v;
		cb_.i = NULL;
		default_.i = def;
	}

	ConfigSetting(const char *ini, float *v, float def, bool save = true)
		: ini_(ini), type_(TYPE_FLOAT), report_(false), save_(save) {
		ptr_.f = v;
		cb_.f = NULL;
		default_.f = def;
	}

	ConfigSetting(const char *ini, std::string *v, const char *def, bool save = true)
		: ini_(ini), type_(TYPE_STRING), report_(false), save_(save) {
		ptr_.s = v;
		cb_.s = NULL;
		default_.s = def;
	}

	ConfigSetting(const char *ini, bool *v, BoolDefaultCallback def, bool save = true)
		: ini_(ini), type_(TYPE_BOOL), report_(false), save_(save) {
		ptr_.b = v;
		cb_.b = def;
	}

	ConfigSetting(const char *ini, int *v, IntDefaultCallback def, bool save = true)
		: ini_(ini), type_(TYPE_INT), report_(false), save_(save) {
		ptr_ .i= v;
		cb_.i = def;
	}

	ConfigSetting(const char *ini, float *v, FloatDefaultCallback def, bool save = true)
		: ini_(ini), type_(TYPE_FLOAT), report_(false), save_(save) {
		ptr_.f = v;
		cb_.f = def;
	}

	ConfigSetting(const char *ini, std::string *v, StringDefaultCallback def, bool save = true)
		: ini_(ini), type_(TYPE_STRING), report_(false), save_(save) {
		ptr_.s = v;
		cb_.s = def;
	}

	bool HasMore() {
		return type_ != TYPE_TERMINATOR;
	}

	bool Get(IniFile::Section *section) {
		switch (type_) {
		case TYPE_BOOL:
			if (cb_.b) {
				default_.b = cb_.b();
			}
			return section->Get(ini_, ptr_.b, default_.b);
		case TYPE_INT:
			if (cb_.i) {
				default_.i = cb_.i();
			}
			return section->Get(ini_, ptr_.i, default_.i);
		case TYPE_FLOAT:
			if (cb_.f) {
				default_.f = cb_.f();
			}
			return section->Get(ini_, ptr_.f, default_.f);
		case TYPE_STRING:
			if (cb_.s) {
				default_.s = cb_.s();
			}
			return section->Get(ini_, ptr_.s, default_.s);
		default:
			_dbg_assert_msg_(LOADER, false, "Unexpected ini setting type");
			return false;
		}
	}

	void Set(IniFile::Section *section) {
		if (!save_)
			return;

		switch (type_) {
		case TYPE_BOOL:
			return section->Set(ini_, *ptr_.b);
		case TYPE_INT:
			return section->Set(ini_, *ptr_.i);
		case TYPE_FLOAT:
			return section->Set(ini_, *ptr_.f);
		case TYPE_STRING:
			return section->Set(ini_, *ptr_.s);
		default:
			_dbg_assert_msg_(LOADER, false, "Unexpected ini setting type");
			return;
		}
	}

	void Report(UrlEncoder &data, const std::string &prefix) {
		if (!report_)
			return;

		switch (type_) {
		case TYPE_BOOL:
			return data.Add(prefix + ini_, *ptr_.b);
		case TYPE_INT:
			return data.Add(prefix + ini_, *ptr_.i);
		case TYPE_FLOAT:
			return data.Add(prefix + ini_, *ptr_.f);
		case TYPE_STRING:
			return data.Add(prefix + ini_, *ptr_.s);
		default:
			_dbg_assert_msg_(LOADER, false, "Unexpected ini setting type");
			return;
		}
	}

	const char *ini_;
	Type type_;
	bool report_;
	bool save_;
	SettingPtr ptr_;
	Value default_;
	Callback cb_;
};

struct ReportedConfigSetting : public ConfigSetting {
	template <typename T1, typename T2>
	ReportedConfigSetting(const char *ini, T1 *v, T2 def, bool save = true)
		: ConfigSetting(ini, v, def, save) {
		report_ = true;
	}
};

const char *DefaultLangRegion() {
	static std::string defaultLangRegion = "en_US";
	if (g_Config.bFirstRun) {
		std::string langRegion = System_GetProperty(SYSPROP_LANGREGION);
		if (i18nrepo.IniExists(langRegion))
			defaultLangRegion = langRegion;
	}

	return defaultLangRegion.c_str();
}

const char *CreateRandMAC() {
	std::stringstream randStream;
	srand(time(0));
	for(int i = 0; i < 6; i++) {
		randStream << std::hex << (rand() % 256); //generates each octet for the mac in hex format
		if (i<5) {
			randStream << ':'; //we need a : between every octet
		}
	}
  // It's ok to strdup, this runs once and will be freed by exiting the process anyway
	return strdup(randStream.str().c_str()); //no need for creating a new string, just return this
}

static int DefaultNumWorkers() {
	return cpu_info.num_cores;
}

static bool DefaultJit() {
#ifdef IOS
	return iosCanUseJit;
#else
	return true;
#endif
}

struct ConfigSectionSettings {
	const char *section;
	ConfigSetting *settings;
};

static ConfigSetting generalSettings[] = {
	ConfigSetting("FirstRun", &g_Config.bFirstRun, true),
	ConfigSetting("RunCount", &g_Config.iRunCount, 0),
	ConfigSetting("Enable Logging", &g_Config.bEnableLogging, true),
	ConfigSetting("AutoRun", &g_Config.bAutoRun, true),
	ConfigSetting("Browse", &g_Config.bBrowse, false),
	ConfigSetting("IgnoreBadMemAccess", &g_Config.bIgnoreBadMemAccess, true),
	ConfigSetting("CurrentDirectory", &g_Config.currentDirectory, ""),
	ConfigSetting("ShowDebuggerOnLoad", &g_Config.bShowDebuggerOnLoad, false),
	ConfigSetting("HomebrewStore", &g_Config.bHomebrewStore, false, false),
	ConfigSetting("CheckForNewVersion", &g_Config.bCheckForNewVersion, true),
	ConfigSetting("Language", &g_Config.sLanguageIni, &DefaultLangRegion),
	ConfigSetting("ForceLagSync", &g_Config.bForceLagSync, false),

	ReportedConfigSetting("NumWorkerThreads", &g_Config.iNumWorkerThreads, &DefaultNumWorkers),
	ConfigSetting("EnableAutoLoad", &g_Config.bEnableAutoLoad, false),
	ReportedConfigSetting("EnableCheats", &g_Config.bEnableCheats, false),
	ConfigSetting("ScreenshotsAsPNG", &g_Config.bScreenshotsAsPNG, false),
	ConfigSetting("StateSlot", &g_Config.iCurrentStateSlot, 0),
	ConfigSetting("RewindFlipFrequency", &g_Config.iRewindFlipFrequency, 0),

	ConfigSetting("GridView1", &g_Config.bGridView1, true),
	ConfigSetting("GridView2", &g_Config.bGridView2, true),
	ConfigSetting("GridView3", &g_Config.bGridView3, false),

	// "default" means let emulator decide, "" means disable.
	ConfigSetting("ReportingHost", &g_Config.sReportHost, "default"),
	ConfigSetting("AutoSaveSymbolMap", &g_Config.bAutoSaveSymbolMap, false),

#ifdef ANDROID
	ConfigSetting("ScreenRotation", &g_Config.iScreenRotation, 1),
#endif

#if defined(USING_WIN_UI)
	ConfigSetting("TopMost", &g_Config.bTopMost, false),
	ConfigSetting("WindowX", &g_Config.iWindowX, -1), // -1 tells us to center the window.
	ConfigSetting("WindowY", &g_Config.iWindowY, -1),
	ConfigSetting("WindowWidth", &g_Config.iWindowWidth, 0),   // 0 will be automatically reset later (need to do the AdjustWindowRect dance).
	ConfigSetting("WindowHeight", &g_Config.iWindowHeight, 0),
	ConfigSetting("PauseOnLostFocus", &g_Config.bPauseOnLostFocus, false),
#endif
	ConfigSetting("PauseWhenMinimized", &g_Config.bPauseWhenMinimized, false),
	ConfigSetting("DumpDecryptedEboots", &g_Config.bDumpDecryptedEboot, false),
	ConfigSetting(false),
};

static ConfigSetting cpuSettings[] = {
	ReportedConfigSetting("Jit", &g_Config.bJit, &DefaultJit),
	ReportedConfigSetting("SeparateCPUThread", &g_Config.bSeparateCPUThread, false),
	ConfigSetting("AtomicAudioLocks", &g_Config.bAtomicAudioLocks, false),

	ReportedConfigSetting("SeparateIOThread", &g_Config.bSeparateIOThread, true),
	ConfigSetting("FastMemoryAccess", &g_Config.bFastMemory, true),
	ReportedConfigSetting("FuncReplacements", &g_Config.bFuncReplacements, true),
	ReportedConfigSetting("CPUSpeed", &g_Config.iLockedCPUSpeed, 0),
	ReportedConfigSetting("SetRoundingMode", &g_Config.bSetRoundingMode, true),

	ConfigSetting(false),
};

static int DefaultRenderingMode() {
	if (System_GetProperty(SYSPROP_NAME) == "samsung:GT-S5360") {
		return 0;  // Non-buffered
	}
	return 1;
}

static int DefaultInternalResolution() {
	// Auto on Windows, 2x on large screens, 1x elsewhere.
#if defined(USING_WIN_UI)
	return 0;
#else
	return pixel_xres >= 1024 ? 2 : 1;
#endif
}

static bool DefaultPartialStretch() {
#ifdef BLACKBERRY
	return pixel_xres < 1.3 * pixel_yres;
#else
	return false;
#endif
}

static bool DefaultTimerHack() {
// Has been in use on Symbian since v0.7. Preferred option.
#ifdef __SYMBIAN32__
	return true;
#else
	return false;
#endif
}

static int DefaultAndroidHwScale() {
#ifdef ANDROID
	// Get the real resolution as passed in during startup, not dp_xres and stuff
	int xres = System_GetPropertyInt(SYSPROP_DISPLAY_XRES);
	int yres = System_GetPropertyInt(SYSPROP_DISPLAY_YRES);

	if (xres < 960) {
		// Smaller than the PSP*2, let's go native.
		return 0;
	} else if (xres <= 480 * 3) {  // 720p xres
		// Small-ish screen, we should default to 2x
		return 2 + 1;
	} else {
		// Large or very large screen. Default to 3x psp resolution.
		return 3 + 1;
	}
	return 0;
#else
	return 1;
#endif
}

static ConfigSetting graphicsSettings[] = {
	ConfigSetting("ShowFPSCounter", &g_Config.iShowFPSCounter, 0),
	ReportedConfigSetting("GPUBackend", &g_Config.iGPUBackend, 0),
	ReportedConfigSetting("RenderingMode", &g_Config.iRenderingMode, &DefaultRenderingMode),
	ConfigSetting("SoftwareRendering", &g_Config.bSoftwareRendering, false),
	ReportedConfigSetting("HardwareTransform", &g_Config.bHardwareTransform, true),
	ReportedConfigSetting("SoftwareSkinning", &g_Config.bSoftwareSkinning, true),
	ReportedConfigSetting("TextureFiltering", &g_Config.iTexFiltering, 1),
	ReportedConfigSetting("BufferFiltering", &g_Config.iBufFilter, 1),
	ReportedConfigSetting("InternalResolution", &g_Config.iInternalResolution, &DefaultInternalResolution),
	ReportedConfigSetting("AndroidHwScale", &g_Config.iAndroidHwScale, &DefaultAndroidHwScale),
	ReportedConfigSetting("FrameSkip", &g_Config.iFrameSkip, 0),
	ReportedConfigSetting("AutoFrameSkip", &g_Config.bAutoFrameSkip, false),
	ReportedConfigSetting("FrameRate", &g_Config.iFpsLimit, 0),
#ifdef _WIN32
	ConfigSetting("FrameSkipUnthrottle", &g_Config.bFrameSkipUnthrottle, false),
#else
	ConfigSetting("FrameSkipUnthrottle", &g_Config.bFrameSkipUnthrottle, true),
#endif
	ReportedConfigSetting("ForceMaxEmulatedFPS", &g_Config.iForceMaxEmulatedFPS, 60),
#ifdef USING_GLES2
	ConfigSetting("AnisotropyLevel", &g_Config.iAnisotropyLevel, 0),
#else
	ConfigSetting("AnisotropyLevel", &g_Config.iAnisotropyLevel, 8),
#endif
	ReportedConfigSetting("VertexCache", &g_Config.bVertexCache, true),
	ReportedConfigSetting("TextureBackoffCache", &g_Config.bTextureBackoffCache, false),
	ReportedConfigSetting("TextureSecondaryCache", &g_Config.bTextureSecondaryCache, false),
	ReportedConfigSetting("VertexDecJit", &g_Config.bVertexDecoderJit, &DefaultJit, false),

#ifdef _WIN32
	ConfigSetting("FullScreen", &g_Config.bFullScreen, false),
#endif

	// TODO: Replace these settings with a list of options
	ConfigSetting("PartialStretch", &g_Config.bPartialStretch, &DefaultPartialStretch),
	ConfigSetting("StretchToDisplay", &g_Config.bStretchToDisplay, false),
	ConfigSetting("SmallDisplay", &g_Config.bSmallDisplay, false),
	ConfigSetting("ImmersiveMode", &g_Config.bImmersiveMode, false),

	ReportedConfigSetting("TrueColor", &g_Config.bTrueColor, true),

	ReportedConfigSetting("MipMap", &g_Config.bMipMap, true),

	ReportedConfigSetting("TexScalingLevel", &g_Config.iTexScalingLevel, 1),
	ReportedConfigSetting("TexScalingType", &g_Config.iTexScalingType, 0),
	ReportedConfigSetting("TexDeposterize", &g_Config.bTexDeposterize, false),
	ConfigSetting("VSyncInterval", &g_Config.bVSync, false),
	ReportedConfigSetting("DisableStencilTest", &g_Config.bDisableStencilTest, false),
	ReportedConfigSetting("AlwaysDepthWrite", &g_Config.bAlwaysDepthWrite, false),

	// Not really a graphics setting...
	ReportedConfigSetting("TimerHack", &g_Config.bTimerHack, &DefaultTimerHack),
	ReportedConfigSetting("AlphaMaskHack", &g_Config.bAlphaMaskHack, false),
	ReportedConfigSetting("SplineBezierQuality", &g_Config.iSplineBezierQuality, 2),
	ReportedConfigSetting("PostShader", &g_Config.sPostShaderName, "Off"),

	ReportedConfigSetting("MemBlockTransferGPU", &g_Config.bBlockTransferGPU, true),
	ReportedConfigSetting("DisableSlowFramebufEffects", &g_Config.bDisableSlowFramebufEffects, false),

	ConfigSetting(false),
};

static ConfigSetting soundSettings[] = {
	ConfigSetting("Enable", &g_Config.bEnableSound, true),
	ConfigSetting("AudioLatency", &g_Config.iAudioLatency, 1),
	ConfigSetting("SoundSpeedHack", &g_Config.bSoundSpeedHack, false),

	ConfigSetting(false),
};

static bool DefaultShowTouchControls() {
#if defined(MOBILE_DEVICE)
	std::string name = System_GetProperty(SYSPROP_NAME);
	if (KeyMap::HasBuiltinController(name)) {
		return false;
	} else {
		return true;
	}
#else
	return false;
#endif
}

static const float defaultControlScale = 1.15f;

static ConfigSetting controlSettings[] = {
	ConfigSetting("HapticFeedback", &g_Config.bHapticFeedback, true),
	ConfigSetting("ShowTouchCross", &g_Config.bShowTouchCross, true),
	ConfigSetting("ShowTouchCircle", &g_Config.bShowTouchCircle, true),
	ConfigSetting("ShowTouchSquare", &g_Config.bShowTouchSquare, true),
	ConfigSetting("ShowTouchTriangle", &g_Config.bShowTouchTriangle, true),
	ConfigSetting("ShowTouchStart", &g_Config.bShowTouchStart, true),
	ConfigSetting("ShowTouchSelect", &g_Config.bShowTouchSelect, true),
	ConfigSetting("ShowTouchLTrigger", &g_Config.bShowTouchLTrigger, true),
	ConfigSetting("ShowTouchRTrigger", &g_Config.bShowTouchRTrigger, true),
	ConfigSetting("ShowAnalogStick", &g_Config.bShowTouchAnalogStick, true),
	ConfigSetting("ShowTouchDpad", &g_Config.bShowTouchDpad, true),
	ConfigSetting("ShowTouchUnthrottle", &g_Config.bShowTouchUnthrottle, true),
#if !defined(__SYMBIAN32__) && !defined(IOS) && !defined(MAEMO)
#if defined(_WIN32)
	// A win32 user seeing touch controls is likely using PPSSPP on a tablet. There it makes
	// sense to default this to on.
	ConfigSetting("ShowTouchPause", &g_Config.bShowTouchPause, true),
#else
	ConfigSetting("ShowTouchPause", &g_Config.bShowTouchPause, false),
#endif
#endif
#if defined(USING_WIN_UI)
	ConfigSetting("IgnoreWindowsKey", &g_Config.bIgnoreWindowsKey, false),
#endif
	ConfigSetting("ShowTouchControls", &g_Config.bShowTouchControls, &DefaultShowTouchControls),
	// ConfigSetting("KeyMapping", &g_Config.iMappingMap, 0),

#ifdef MOBILE_DEVICE
	ConfigSetting("TiltBaseX", &g_Config.fTiltBaseX, 0.0f),
	ConfigSetting("TiltBaseY", &g_Config.fTiltBaseY, 0.0f),
	ConfigSetting("InvertTiltX", &g_Config.bInvertTiltX, false),
	ConfigSetting("InvertTiltY", &g_Config.bInvertTiltY, true),
	ConfigSetting("TiltSensitivityX", &g_Config.iTiltSensitivityX, 100),
	ConfigSetting("TiltSensitivityY", &g_Config.iTiltSensitivityY, 100),
	ConfigSetting("DeadzoneRadius", &g_Config.fDeadzoneRadius, 0.2f),
	ConfigSetting("TiltInputType", &g_Config.iTiltInputType, 0),
#endif

	ConfigSetting("DisableDpadDiagonals", &g_Config.bDisableDpadDiagonals, false),
	ConfigSetting("TouchButtonStyle", &g_Config.iTouchButtonStyle, 1),
	ConfigSetting("TouchButtonOpacity", &g_Config.iTouchButtonOpacity, 65),

	// -1.0f means uninitialized, set in GamepadEmu::CreatePadLayout().
	ConfigSetting("ActionButtonSpacing2", &g_Config.fActionButtonSpacing, 1.0f),
	ConfigSetting("ActionButtonCenterX", &g_Config.fActionButtonCenterX, -1.0f),
	ConfigSetting("ActionButtonCenterY", &g_Config.fActionButtonCenterY, -1.0f),
	ConfigSetting("ActionButtonScale", &g_Config.fActionButtonScale, defaultControlScale),
	ConfigSetting("DPadX", &g_Config.fDpadX, -1.0f),
	ConfigSetting("DPadY", &g_Config.fDpadY, -1.0f),

	// Note: these will be overwritten if DPadRadius is set.
	ConfigSetting("DPadScale", &g_Config.fDpadScale, defaultControlScale),
	ConfigSetting("DPadSpacing", &g_Config.fDpadSpacing, 1.0f),
	ConfigSetting("StartKeyX", &g_Config.fStartKeyX, -1.0f),
	ConfigSetting("StartKeyY", &g_Config.fStartKeyY, -1.0f),
	ConfigSetting("StartKeyScale", &g_Config.fStartKeyScale, defaultControlScale),
	ConfigSetting("SelectKeyX", &g_Config.fSelectKeyX, -1.0f),
	ConfigSetting("SelectKeyY", &g_Config.fSelectKeyY, -1.0f),
	ConfigSetting("SelectKeyScale", &g_Config.fSelectKeyScale, defaultControlScale),
	ConfigSetting("UnthrottleKeyX", &g_Config.fUnthrottleKeyX, -1.0f),
	ConfigSetting("UnthrottleKeyY", &g_Config.fUnthrottleKeyY, -1.0f),
	ConfigSetting("UnthrottleKeyScale", &g_Config.fUnthrottleKeyScale, defaultControlScale),
	ConfigSetting("LKeyX", &g_Config.fLKeyX, -1.0f),
	ConfigSetting("LKeyY", &g_Config.fLKeyY, -1.0f),
	ConfigSetting("LKeyScale", &g_Config.fLKeyScale, defaultControlScale),
	ConfigSetting("RKeyX", &g_Config.fRKeyX, -1.0f),
	ConfigSetting("RKeyY", &g_Config.fRKeyY, -1.0f),
	ConfigSetting("RKeyScale", &g_Config.fRKeyScale, defaultControlScale),
	ConfigSetting("AnalogStickX", &g_Config.fAnalogStickX, -1.0f),
	ConfigSetting("AnalogStickY", &g_Config.fAnalogStickY, -1.0f),
	ConfigSetting("AnalogStickScale", &g_Config.fAnalogStickScale, defaultControlScale),
	ConfigSetting("AnalogLimiterDeadzone", &g_Config.fAnalogLimiterDeadzone, 0.6f),

	ConfigSetting(false),
};

static ConfigSetting networkSettings[] = {
	ConfigSetting("EnableWlan", &g_Config.bEnableWlan, false),

	ConfigSetting(false),
};

static int DefaultPSPModel() {
	// TODO: Can probably default this on, but not sure about its memory differences.
#if !defined(_M_X64) && !defined(_WIN32) && !defined(__SYMBIAN32__)
	return PSP_MODEL_FAT;
#else
	return PSP_MODEL_SLIM;
#endif
}

static int DefaultSystemParamLanguage() {
	int defaultLang = PSP_SYSTEMPARAM_LANGUAGE_ENGLISH;
	if (g_Config.bFirstRun) {
		// TODO: Be smart about same language, different country
		auto langValuesMapping = GetLangValuesMapping();
		if (langValuesMapping.find(g_Config.sLanguageIni) != langValuesMapping.end()) {
			defaultLang = langValuesMapping[g_Config.sLanguageIni].second;
		}
	}
	return defaultLang;
}

static ConfigSetting systemParamSettings[] = {
	ReportedConfigSetting("PSPModel", &g_Config.iPSPModel, &DefaultPSPModel),
	ReportedConfigSetting("PSPFirmwareVersion", &g_Config.iFirmwareVersion, PSP_DEFAULT_FIRMWARE),
	ConfigSetting("NickName", &g_Config.sNickName, "PPSSPP"),
	ConfigSetting("proAdhocServer", &g_Config.proAdhocServer, "localhost"),
	ConfigSetting("MacAddress", &g_Config.sMACAddress, &CreateRandMAC),
	ReportedConfigSetting("Language", &g_Config.iLanguage, &DefaultSystemParamLanguage),
	ConfigSetting("TimeFormat", &g_Config.iTimeFormat, PSP_SYSTEMPARAM_TIME_FORMAT_24HR),
	ConfigSetting("DateFormat", &g_Config.iDateFormat, PSP_SYSTEMPARAM_DATE_FORMAT_YYYYMMDD),
	ConfigSetting("TimeZone", &g_Config.iTimeZone, 0),
	ConfigSetting("DayLightSavings", &g_Config.bDayLightSavings, (bool)PSP_SYSTEMPARAM_DAYLIGHTSAVINGS_STD),
	ReportedConfigSetting("ButtonPreference", &g_Config.iButtonPreference, PSP_SYSTEMPARAM_BUTTON_CROSS),
	ConfigSetting("LockParentalLevel", &g_Config.iLockParentalLevel, 0),
	ConfigSetting("WlanAdhocChannel", &g_Config.iWlanAdhocChannel, PSP_SYSTEMPARAM_ADHOC_CHANNEL_AUTOMATIC),
#if defined(USING_WIN_UI)
	ConfigSetting("BypassOSKWithKeyboard", &g_Config.bBypassOSKWithKeyboard, false),
#endif
	ConfigSetting("WlanPowerSave", &g_Config.bWlanPowerSave, (bool)PSP_SYSTEMPARAM_WLAN_POWERSAVE_OFF),
	ReportedConfigSetting("EncryptSave", &g_Config.bEncryptSave, true),

	ConfigSetting(false),
};

static ConfigSetting debuggerSettings[] = {
	ConfigSetting("DisasmWindowX", &g_Config.iDisasmWindowX, -1),
	ConfigSetting("DisasmWindowY", &g_Config.iDisasmWindowY, -1),
	ConfigSetting("DisasmWindowW", &g_Config.iDisasmWindowW, -1),
	ConfigSetting("DisasmWindowH", &g_Config.iDisasmWindowH, -1),
	ConfigSetting("GEWindowX", &g_Config.iGEWindowX, -1),
	ConfigSetting("GEWindowY", &g_Config.iGEWindowY, -1),
	ConfigSetting("GEWindowW", &g_Config.iGEWindowW, -1),
	ConfigSetting("GEWindowH", &g_Config.iGEWindowH, -1),
	ConfigSetting("ConsoleWindowX", &g_Config.iConsoleWindowX, -1),
	ConfigSetting("ConsoleWindowY", &g_Config.iConsoleWindowY, -1),
	ConfigSetting("FontWidth", &g_Config.iFontWidth, 8),
	ConfigSetting("FontHeight", &g_Config.iFontHeight, 12),
	ConfigSetting("DisplayStatusBar", &g_Config.bDisplayStatusBar, true),
	ConfigSetting("ShowBottomTabTitles",&g_Config.bShowBottomTabTitles,true),
	ConfigSetting("ShowDeveloperMenu", &g_Config.bShowDeveloperMenu, false),
	ConfigSetting("SkipDeadbeefFilling", &g_Config.bSkipDeadbeefFilling, false),
	ConfigSetting("FuncHashMap", &g_Config.bFuncHashMap, false),

	ConfigSetting(false),
};

static ConfigSetting speedHackSettings[] = {
	ReportedConfigSetting("PrescaleUV", &g_Config.bPrescaleUV, false),
	ReportedConfigSetting("DisableAlphaTest", &g_Config.bDisableAlphaTest, false),

	ConfigSetting(false),
};

static ConfigSetting jitSettings[] = {
	ReportedConfigSetting("DiscardRegsOnJRRA", &g_Config.bDiscardRegsOnJRRA, false, false),

	ConfigSetting(false),
};

static ConfigSetting upgradeSettings[] = {
	ConfigSetting("UpgradeMessage", &g_Config.upgradeMessage, ""),
	ConfigSetting("UpgradeVersion", &g_Config.upgradeVersion, ""),
	ConfigSetting("DismissedVersion", &g_Config.dismissedVersion, ""),

	ConfigSetting(false),
};

static ConfigSectionSettings sections[] = {
	{"General", generalSettings},
	{"CPU", cpuSettings},
	{"Graphics", graphicsSettings},
	{"Sound", soundSettings},
	{"Control", controlSettings},
	{"Network", networkSettings},
	{"SystemParam", systemParamSettings},
	{"Debugger", debuggerSettings},
	{"SpeedHacks", speedHackSettings},
	{"JIT", jitSettings},
	{"Upgrade", upgradeSettings},
};

Config::Config() { }
Config::~Config() { }

std::map<std::string, std::pair<std::string, int>> GetLangValuesMapping() {
	std::map<std::string, std::pair<std::string, int>> langValuesMapping;
	IniFile mapping;
	mapping.LoadFromVFS("langregion.ini");
	std::vector<std::string> keys;
	mapping.GetKeys("LangRegionNames", keys);


	std::map<std::string, int> langCodeMapping;
	langCodeMapping["JAPANESE"] = PSP_SYSTEMPARAM_LANGUAGE_JAPANESE;
	langCodeMapping["ENGLISH"] = PSP_SYSTEMPARAM_LANGUAGE_ENGLISH;
	langCodeMapping["FRENCH"] = PSP_SYSTEMPARAM_LANGUAGE_FRENCH;
	langCodeMapping["SPANISH"] = PSP_SYSTEMPARAM_LANGUAGE_SPANISH;
	langCodeMapping["GERMAN"] = PSP_SYSTEMPARAM_LANGUAGE_GERMAN;
	langCodeMapping["ITALIAN"] = PSP_SYSTEMPARAM_LANGUAGE_ITALIAN;
	langCodeMapping["DUTCH"] = PSP_SYSTEMPARAM_LANGUAGE_DUTCH;
	langCodeMapping["PORTUGUESE"] = PSP_SYSTEMPARAM_LANGUAGE_PORTUGUESE;
	langCodeMapping["RUSSIAN"] = PSP_SYSTEMPARAM_LANGUAGE_RUSSIAN;
	langCodeMapping["KOREAN"] = PSP_SYSTEMPARAM_LANGUAGE_KOREAN;
	langCodeMapping["CHINESE_TRADITIONAL"] = PSP_SYSTEMPARAM_LANGUAGE_CHINESE_TRADITIONAL;
	langCodeMapping["CHINESE_SIMPLIFIED"] = PSP_SYSTEMPARAM_LANGUAGE_CHINESE_SIMPLIFIED;

	IniFile::Section *langRegionNames = mapping.GetOrCreateSection("LangRegionNames");
	IniFile::Section *systemLanguage = mapping.GetOrCreateSection("SystemLanguage");

	for (size_t i = 0; i < keys.size(); i++) {
		std::string langName;
		langRegionNames->Get(keys[i].c_str(), &langName, "ERROR");
		std::string langCode;
		systemLanguage->Get(keys[i].c_str(), &langCode, "ENGLISH");
		int iLangCode = PSP_SYSTEMPARAM_LANGUAGE_ENGLISH;
		if (langCodeMapping.find(langCode) != langCodeMapping.end())
			iLangCode = langCodeMapping[langCode];
		langValuesMapping[keys[i]] = std::make_pair(langName, iLangCode);
	}
	return langValuesMapping;
}

void Config::Load(const char *iniFileName, const char *controllerIniFilename) {
	const bool useIniFilename = iniFileName != nullptr && strlen(iniFileName) > 0;
	iniFilename_ = FindConfigFile(useIniFilename ? iniFileName : "ppsspp.ini");

	const bool useControllerIniFilename = controllerIniFilename != nullptr && strlen(controllerIniFilename) > 0;
	controllerIniFilename_ = FindConfigFile(useControllerIniFilename ? controllerIniFilename : "controls.ini");

	INFO_LOG(LOADER, "Loading config: %s", iniFilename_.c_str());
	bSaveSettings = true;

	IniFile iniFile;
	if (!iniFile.Load(iniFilename_)) {
		ERROR_LOG(LOADER, "Failed to read %s. Setting config to default.", iniFilename_.c_str());
		// Continue anyway to initialize the config.
	}

	for (size_t i = 0; i < ARRAY_SIZE(sections); ++i) {
		IniFile::Section *section = iniFile.GetOrCreateSection(sections[i].section);
		for (auto setting = sections[i].settings; setting->HasMore(); ++setting) {
			setting->Get(section);
		}
	}

	iRunCount++;
	if (!File::Exists(currentDirectory))
		currentDirectory = "";

	IniFile::Section *recent = iniFile.GetOrCreateSection("Recent");
	recent->Get("MaxRecent", &iMaxRecent, 30);

	// Fix issue from switching from uint (hex in .ini) to int (dec)
	// -1 is okay, though. We'll just ignore recent stuff if it is.
	 if (iMaxRecent == 0)
		iMaxRecent = 30;

	 if (iMaxRecent > 0) {
		 recentIsos.clear();
		 for (int i = 0; i < iMaxRecent; i++) {
			 char keyName[64];
			 std::string fileName;

			 sprintf(keyName, "FileName%d", i);
			 if (recent->Get(keyName, &fileName, "") && !fileName.empty()) {
				 recentIsos.push_back(fileName);
			 }
		 }
	 }

	auto pinnedPaths = iniFile.GetOrCreateSection("PinnedPaths")->ToMap();
	vPinnedPaths.clear();
	for (auto it = pinnedPaths.begin(), end = pinnedPaths.end(); it != end; ++it) {
		vPinnedPaths.push_back(it->second);
	}

	if (iAnisotropyLevel > 4) {
		iAnisotropyLevel = 4;
	}

	// Check for an old dpad setting
	IniFile::Section *control = iniFile.GetOrCreateSection("Control");
	float f;
	control->Get("DPadRadius", &f, 0.0f);
	if (f > 0.0f) {
		ResetControlLayout();
	}

	// MIGRATION: For users who had the old static touch layout, aren't I nice?
	// We can probably kill this in 0.9.8 or something.
	if (fDpadX > 1.0 || fDpadY > 1.0) { // Likely the rest are too!
		float screen_width = dp_xres;
		float screen_height = dp_yres;

		fActionButtonCenterX /= screen_width;
		fActionButtonCenterY /= screen_height;
		fDpadX /= screen_width;
		fDpadY /= screen_height;
		fStartKeyX /= screen_width;
		fStartKeyY /= screen_height;
		fSelectKeyX /= screen_width;
		fSelectKeyY /= screen_height;
		fUnthrottleKeyX /= screen_width;
		fUnthrottleKeyY /= screen_height;
		fLKeyX /= screen_width;
		fLKeyY /= screen_height;
		fRKeyX /= screen_width;
		fRKeyY /= screen_height;
		fAnalogStickX /= screen_width;
		fAnalogStickY /= screen_height;
	}
	
	const char *gitVer = PPSSPP_GIT_VERSION;
	Version installed(gitVer);
	Version upgrade(upgradeVersion);
	const bool versionsValid = installed.IsValid() && upgrade.IsValid();

	// Do this regardless of iRunCount to prevent a silly bug where one might use an older
	// build of PPSSPP, receive an upgrade notice, then start a newer version, and still receive the upgrade notice,
	// even if said newer version is >= the upgrade found online.
	if ((dismissedVersion == upgradeVersion) || (versionsValid && (installed >= upgrade))) {
		upgradeMessage = "";
	}

	// Check for new version on every 10 runs.
	// Sometimes the download may not be finished when the main screen shows (if the user dismisses the
	// splash screen quickly), but then we'll just show the notification next time instead, we store the
	// upgrade number in the ini.
	if (iRunCount % 10 == 0 && bCheckForNewVersion) {
		std::shared_ptr<http::Download> dl = g_DownloadManager.StartDownloadWithCallback(
			"http://www.ppsspp.org/version.json", "", &DownloadCompletedCallback);
		dl->SetHidden(true);
	}

	INFO_LOG(LOADER, "Loading controller config: %s", controllerIniFilename_.c_str());
	bSaveSettings = true;

	IniFile controllerIniFile;
	if (!controllerIniFile.Load(controllerIniFilename_)) {
		ERROR_LOG(LOADER, "Failed to read %s. Setting controller config to default.", controllerIniFilename_.c_str());
		KeyMap::RestoreDefault();
	} else {
		// Continue anyway to initialize the config. It will just restore the defaults.
		KeyMap::LoadFromIni(controllerIniFile);
	}

	CleanRecent();
}

void Config::Save() {
	if (iniFilename_.size() && g_Config.bSaveSettings) {
		CleanRecent();
		IniFile iniFile;
		if (!iniFile.Load(iniFilename_.c_str())) {
			ERROR_LOG(LOADER, "Error saving config - can't read ini %s", iniFilename_.c_str());
		}

		// Need to do this somewhere...
		bFirstRun = false;

		for (size_t i = 0; i < ARRAY_SIZE(sections); ++i) {
			IniFile::Section *section = iniFile.GetOrCreateSection(sections[i].section);
			for (auto setting = sections[i].settings; setting->HasMore(); ++setting) {
				setting->Set(section);
			}
		}

		IniFile::Section *recent = iniFile.GetOrCreateSection("Recent");
		recent->Set("MaxRecent", iMaxRecent);

		for (int i = 0; i < iMaxRecent; i++) {
			char keyName[64];
			sprintf(keyName,"FileName%d",i);
			if (i < (int)recentIsos.size()) {
				recent->Set(keyName, recentIsos[i]);
			} else {
				recent->Delete(keyName); // delete the nonexisting FileName
			}
		}

		IniFile::Section *pinnedPaths = iniFile.GetOrCreateSection("PinnedPaths");
		pinnedPaths->Clear();
		for (size_t i = 0; i < vPinnedPaths.size(); ++i) {
			char keyName[64];
			snprintf(keyName, sizeof(keyName), "Path%d", (int)i);
			pinnedPaths->Set(keyName, vPinnedPaths[i]);
		}

		IniFile::Section *control = iniFile.GetOrCreateSection("Control");
		control->Delete("DPadRadius");

		if (!iniFile.Save(iniFilename_.c_str())) {
			ERROR_LOG(LOADER, "Error saving config - can't write ini %s", iniFilename_.c_str());
			return;
		}
		INFO_LOG(LOADER, "Config saved: %s", iniFilename_.c_str());


		IniFile controllerIniFile;
		if (!controllerIniFile.Load(controllerIniFilename_.c_str())) {
			ERROR_LOG(LOADER, "Error saving config - can't read ini %s", controllerIniFilename_.c_str());
		}
		KeyMap::SaveToIni(controllerIniFile);
		if (!controllerIniFile.Save(controllerIniFilename_.c_str())) {
			ERROR_LOG(LOADER, "Error saving config - can't write ini %s", controllerIniFilename_.c_str());
			return;
		}
		INFO_LOG(LOADER, "Controller config saved: %s", controllerIniFilename_.c_str());

	} else {
		INFO_LOG(LOADER, "Not saving config");
	}
}

// Use for debugging the version check without messing with the server
#if 0
#define PPSSPP_GIT_VERSION "v0.0.1-gaaaaaaaaa"
#endif

void Config::DownloadCompletedCallback(http::Download &download) {
	if (download.ResultCode() != 200) {
		ERROR_LOG(LOADER, "Failed to download version.json");
		return;
	}
	std::string data;
	download.buffer().TakeAll(&data);
	if (data.empty()) {
		ERROR_LOG(LOADER, "Version check: Empty data from server!");
		return;
	}

	JsonReader reader(data.c_str(), data.size());
	const json_value *root = reader.root();
	std::string version = root->getString("version", "");

	const char *gitVer = PPSSPP_GIT_VERSION;
	Version installed(gitVer);
	Version upgrade(version);
	Version dismissed(g_Config.dismissedVersion);

	if (!installed.IsValid()) {
		ERROR_LOG(LOADER, "Version check: Local version string invalid. Build problems? %s", PPSSPP_GIT_VERSION);
		return;
	}
	if (!upgrade.IsValid()) {
		ERROR_LOG(LOADER, "Version check: Invalid server version: %s", version.c_str());
		return;
	}

	if (installed >= upgrade) {
		INFO_LOG(LOADER, "Version check: Already up to date, erasing any upgrade message");
		g_Config.upgradeMessage = "";
		g_Config.upgradeVersion = upgrade.ToString();
		g_Config.dismissedVersion = "";
		return;
	}

	if (installed < upgrade && dismissed != upgrade) {
		g_Config.upgradeMessage = "New version of PPSSPP available!";
		g_Config.upgradeVersion = upgrade.ToString();
		g_Config.dismissedVersion = "";
	}
}

void Config::DismissUpgrade() {
	g_Config.dismissedVersion = g_Config.upgradeVersion;
}

void Config::AddRecent(const std::string &file) {
	// Don't bother with this if the user disabled recents (it's -1).
	if (iMaxRecent <= 0)
		return;

	for (auto str = recentIsos.begin(); str != recentIsos.end(); ++str) {
#ifdef _WIN32
		if (!strcmpIgnore((*str).c_str(), file.c_str(), "\\", "/")) {
#else
		if (!strcmp((*str).c_str(), file.c_str())) {
#endif
			recentIsos.erase(str);
			recentIsos.insert(recentIsos.begin(), file);
			if ((int)recentIsos.size() > iMaxRecent)
				recentIsos.resize(iMaxRecent);
			return;
		}
	}
	recentIsos.insert(recentIsos.begin(), file);
	if ((int)recentIsos.size() > iMaxRecent)
		recentIsos.resize(iMaxRecent);
}

void Config::CleanRecent() {
	std::vector<std::string> cleanedRecent;
	for (size_t i = 0; i < recentIsos.size(); i++) {
		if (File::Exists(recentIsos[i])) {
			// clean the redundant recent games' list.
			if (cleanedRecent.size()==0) { // add first one
				cleanedRecent.push_back(recentIsos[i]);
			}
			for (size_t j = 0; j < cleanedRecent.size();j++) {
				if (cleanedRecent[j] == recentIsos[i])
					break; // skip if found redundant
				if (j == cleanedRecent.size() - 1){ // add if no redundant found
					cleanedRecent.push_back(recentIsos[i]);
				}
			}
		}
	}
	recentIsos = cleanedRecent;
}

void Config::SetDefaultPath(const std::string &defaultPath) {
	defaultPath_ = defaultPath;
}

void Config::AddSearchPath(const std::string &path) {
	searchPath_.push_back(path);
}

const std::string Config::FindConfigFile(const std::string &baseFilename) {
	// Don't search for an absolute path.
	if (baseFilename.size() > 1 && baseFilename[0] == '/') {
		return baseFilename;
	}
#ifdef _WIN32
	if (baseFilename.size() > 3 && baseFilename[1] == ':' && (baseFilename[2] == '/' || baseFilename[2] == '\\')) {
		return baseFilename;
	}
#endif

	for (size_t i = 0; i < searchPath_.size(); ++i) {
		std::string filename = searchPath_[i] + baseFilename;
		if (File::Exists(filename)) {
			return filename;
		}
	}

	const std::string filename = defaultPath_.empty() ? baseFilename : defaultPath_ + baseFilename;
	if (!File::Exists(filename)) {
		std::string path;
		SplitPath(filename, &path, NULL, NULL);
		File::CreateFullPath(path);
	}
	return filename;
}

void Config::RestoreDefaults() {
	if(File::Exists(iniFilename_))
		File::Delete(iniFilename_);
	recentIsos.clear();
	currentDirectory = "";
	Load();
}

void Config::ResetControlLayout() {
	g_Config.fActionButtonScale = defaultControlScale;
	g_Config.fActionButtonSpacing = 1.0f;
	g_Config.fActionButtonCenterX = -1.0;
	g_Config.fActionButtonCenterY = -1.0;
	g_Config.fDpadScale = defaultControlScale;
	g_Config.fDpadSpacing = 1.0f;
	g_Config.fDpadX = -1.0;
	g_Config.fDpadY = -1.0;
	g_Config.fStartKeyX = -1.0;
	g_Config.fStartKeyY = -1.0;
	g_Config.fStartKeyScale = defaultControlScale;
	g_Config.fSelectKeyX = -1.0;
	g_Config.fSelectKeyY = -1.0;
	g_Config.fSelectKeyScale = defaultControlScale;
	g_Config.fUnthrottleKeyX = -1.0;
	g_Config.fUnthrottleKeyY = -1.0;
	g_Config.fUnthrottleKeyScale = defaultControlScale;
	g_Config.fLKeyX = -1.0;
	g_Config.fLKeyY = -1.0;
	g_Config.fLKeyScale = defaultControlScale;
	g_Config.fRKeyX = -1.0;
	g_Config.fRKeyY = -1.0;
	g_Config.fRKeyScale = defaultControlScale;
	g_Config.fAnalogStickX = -1.0;
	g_Config.fAnalogStickY = -1.0;
	g_Config.fAnalogStickScale = defaultControlScale;
}

void Config::GetReportingInfo(UrlEncoder &data) {
	for (size_t i = 0; i < ARRAY_SIZE(sections); ++i) {
		const std::string prefix = std::string("config.") + sections[i].section;
		for (auto setting = sections[i].settings; setting->HasMore(); ++setting) {
			setting->Report(data, prefix);
		}
	}
}