#include "mainwindow.h"
#include <sstream>
#include <QApplication>

char* GetCppExceptionInfo(EXCEPTION_POINTERS* exception)
{
	// See https://blogs.msdn.microsoft.com/oldnewthing/20100730-00/?p=13273
	// Not very reliable so use __try
	__try { return ((char****)exception->ExceptionRecord->ExceptionInformation[2])[3][1][1] + 8; }
	__except (EXCEPTION_EXECUTE_HANDLER) { return "Could not find"; }
}

LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS* exception)
{
	MEMORY_BASIC_INFORMATION info = {};
	VirtualQuery(exception->ExceptionRecord->ExceptionAddress, &info, sizeof(info));
	wchar_t moduleName[MAX_PATH] = {};
	GetModuleFileNameW((HMODULE)info.AllocationBase, moduleName, MAX_PATH);

	std::wstringstream errorMsg;
	errorMsg << std::uppercase << std::hex <<
		L"Error code: " << exception->ExceptionRecord->ExceptionCode << std::endl <<
		L"Error address: " << (uint64_t)exception->ExceptionRecord->ExceptionAddress << std::endl <<
		L"Error in module: " << moduleName << std::endl;

	if (exception->ExceptionRecord->ExceptionCode == 0xE06D7363)
		errorMsg << "Additional info: " << GetCppExceptionInfo(exception) << std::endl;

	for (int i = 0; i < exception->ExceptionRecord->NumberParameters; ++i)
		errorMsg << L"Additional info: " << exception->ExceptionRecord->ExceptionInformation[i] << std::endl;

	MessageBoxW(NULL, errorMsg.str().c_str(), L"Textractor ERROR", MB_ICONERROR);

	return EXCEPTION_CONTINUE_SEARCH;
}

int main(int argc, char *argv[])
{
	SetUnhandledExceptionFilter(ExceptionHandler);
	QApplication a(argc, argv);
	MainWindow w;
	w.show();
	return a.exec();
}