#include "Minecraft_Utils.h"

CMinecraftUtils utils;

CMinecraftUtils::CMinecraftUtils()
{}

fs::path CMinecraftUtils::GetExeDir()
{
	wchar_t szExePath[MAX_PATH] = {};
    GetModuleFileNameW(nullptr, szExePath, MAX_PATH);
	return fs::path(szExePath).parent_path();
}

std::string CMinecraftUtils::WideToUtf8(const std::wstring &value)
{
	if (value.empty())
		return std::string();

	int charCount = WideCharToMultiByte(CP_UTF8, 0, value.c_str(), (int)value.length(), nullptr, 0, nullptr, nullptr);
	if (charCount <= 0)
		return std::string();

	std::string utf8;
	utf8.resize(charCount);
	WideCharToMultiByte(CP_UTF8, 0, value.c_str(), (int)value.length(), &utf8[0], charCount, nullptr, nullptr);
	return utf8;
}

std::wstring CMinecraftUtils::Utf8ToWide(const char *value)
{
	if (value == nullptr || value[0] == 0)
		return std::wstring();

	int wideCount = MultiByteToWideChar(CP_UTF8, 0, value, -1, nullptr, 0);
	if (wideCount <= 0)
	{
		// Fall back to the current ANSI code page so legacy non-UTF-8 inputs remain readable.
		wideCount = MultiByteToWideChar(CP_ACP, 0, value, -1, nullptr, 0);
		if (wideCount <= 0)
			return std::wstring();

		std::wstring wide;
		wide.resize(wideCount - 1);
		MultiByteToWideChar(CP_ACP, 0, value, -1, &wide[0], wideCount);
		return wide;
	}

	std::wstring wide;
	wide.resize(wideCount - 1);
	MultiByteToWideChar(CP_UTF8, 0, value, -1, &wide[0], wideCount);
	return wide;
}

std::wstring CMinecraftUtils::Utf8ToWide(const std::string &value)
{
	return Utf8ToWide(value.c_str());
}