#include <conio.h>
#include <direct.h>
#include <string>
#include <Libra.h> // C++ , C

typedef gVar myPreferredVarName;

void setCmdLine(int argc, char** argv, int *customArgc, char*** customArgv)
{
	int i=0;
	for (;i<argc;i++)
	{
		const size_t n = strlen(argv[i]);
		(*customArgv)[i] = new char[n+1];
		memcpy((*customArgv)[i], argv[i], n);
		(*customArgv)[i][n] = '\0';
	}

	// Set -c ClientDebug for visual debugging, -? for help.
	(*customArgv)[i] = "-c";
	(*customArgv)[i+1] = "ClientSDK";
	(*customArgv)[i+2] = "\0";
}

int main(int argc, char* argv[])
{
	int    customArgc = argc+3;
	char** customArgv = new char*[customArgc];
	setCmdLine(argc, argv, &customArgc, &customArgv);

	libra_Init(customArgc, customArgv);
	libra_SetDefaultDataType(GFLOAT64);

	// Construct data path
	const std::string exeName(_getcwd(NULL, 0));
	const size_t pos = exeName.rfind("Libra SDK");
	const std::string dataPath = exeName.substr(0, pos+9) + std::string("\\data\\");
	const std::string filename = dataPath + std::string("image-test.tga"); 

	// Load image from disk.
	gVar floatImage = imread(filename.c_str());

	// Create a sobel filter.
	int sobelDataHorz[] = {1,0,-1,2,0,-2,1,0,-1};
	gVar sobelFilterVert(3,3, GINT32);
	sobelFilterVert.setData(sobelDataHorz);
	sobelFilterVert = transpose(sobelFilterVert);
	sobelFilterVert.print();
	
	// Apply filter.
	gVar x_result = imfilter(floatImage, sobelFilterVert);

	// View result
	render(x_result);

	// 1. Run in DEBUG and with cmdLine -c ClientDebug (Libra Visual debugging)
	// 2. Enable breakpoint at libra_shutdown() and run application with debugger.
	// 3. As breaking : freeze main thread from debugger...
	// 4. ...and continue application running Libra runtime thread.
	// 5. Resume main thread to exit application.
	libra_Shutdown();

	printf("\nPress a key to exit...\n");
	_getch();

	delete[] customArgv;

	return 0;
}