#include <assert.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <memory.h>
#include <time.h>

#include <Windows.h>

#include "utils/logger.h"

static FILE* s_logFileHandle = NULL;
static DWORD s_logOpenTime = 0;

void logWriteMsg(const char* msg)
{
	DWORD dwCurrentTime = GetTickCount() - s_logOpenTime;

	static char buffer[1024];
	int len = sprintf(buffer, "%02lu:%02lu.%02lu: %s",
			dwCurrentTime / 60000, dwCurrentTime / 1000 % 60, dwCurrentTime % 1000 / 10, msg);

	if (s_logFileHandle)
	{
		fwrite(buffer, sizeof(char), len, s_logFileHandle);
		fflush(s_logFileHandle);
	}
}

static bool s_Initialized = false;

void Logger::Init()
{
	s_logFileHandle = fopen("output.txt", "w");
	assert(s_logFileHandle);

	s_logOpenTime = GetTickCount();

	s_Initialized = true;
}

void Logger::Shutdown()
{
	if (s_logFileHandle)
	{
		fclose(s_logFileHandle);
		s_logFileHandle = NULL;
	}
}

void Logger::LogPrint(const char* msg, ...)
{
	static char buffer[2048 * 2];

	if (s_Initialized == false)
		Logger::Init();
	
	va_list args;
	va_start(args, msg);
	vsprintf(buffer, msg, args);
	va_end(args);

	strcat(buffer, "\n");

	OutputDebugStringA(buffer);

	// write to console
	fwrite(buffer, sizeof(char), strlen(buffer), stdout);

	logWriteMsg(buffer);
}

void Logger::Error(const char* msg, ...)
{
	static char buffer[2048 * 2];
	va_list args;
	va_start(args, msg);
	vsprintf(buffer, msg, args);
	va_end(args);

	strcat(buffer, "\n");

	OutputDebugStringA(buffer);

	// write to console
	fwrite(buffer, sizeof(char), strlen(buffer), stdout);

	logWriteMsg(buffer);

	MessageBoxA(NULL, buffer, "Engine Error", MB_OK | MB_ICONERROR);

//	if (IsDebuggerPresent())
//		DebugBreak();
	//else
		exit(-1);
}