#include "stdafx.h"
#include <iostream>
#include <windows.h>
#include <conio.h>

using namespace std;

void gotoxy(int x, int y) {
	HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
	COORD cursorLoc;

	cout.flush();
	cursorLoc.X = x;
	cursorLoc.Y = y;

	SetConsoleCursorPosition(hConsole, cursorLoc);
}

void setColor(int color, int bgcolor)
{
	WORD Color;
	HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);

	Color = (bgcolor<<4 & 0xF0) + (color & 0x0F);
	SetConsoleTextAttribute(hStdOut, Color);
}

void clrscr()
{
	setColor(0, 0);
	system("cls");  // not recommender, but faster
	
					/*
	// compatible, but slower
	gotoxy(0, 0);
	for (size_t i = 0; i < 25; i++)
	cout << endl;
	*/
}

void zadanie1()
{
	cout << "Zadanie 1" << endl;
}

void zadanie2()
{
	cout << "Zadanie 2" << endl;
}

void zadanie3()
{
	cout << "Zadanie 3" << endl;
}

void zadanie4()
{
	cout << "Zadanie 4" << endl;
}

void zadanie(int n)
{
	switch (n)
	{
	case 1: zadanie1(); break;
	case 2: zadanie2(); break;
	case 3: zadanie3(); break;
	case 4: zadanie4(); break;
	default:
		break;
	}
}

void drawArrow()
{
	setColor(0, 10);
	cout << " <-";
	setColor(10, 0);
}
void menu(int n /* n - menu item to highlight by arrow */)
{
	clrscr();

	setColor(10, 0);  // set color of the text and background color

	gotoxy(10, 5);
	cout << "1. Input";
	if (n == 1)
		drawArrow();
	cout << endl;

	gotoxy(10, 6);
	cout << "2. Output";
	if (n == 2)
		drawArrow();
	cout << endl;

	gotoxy(10, 7);
	cout << "3. Search";
	if (n == 3)
		drawArrow();
	cout << endl;

	gotoxy(10, 8);
	cout << "4. Exit";
	if (n == 4)
		drawArrow();
	cout << endl;

	setColor(15, 0);
	cout << endl << "Use 'Up arrow' or 'Down arrow' to choose ";
	cout << endl << "Press ESC to EXIT...";

	gotoxy(10, 20);
	cout << endl;
}

int main()
{
	int menuItem = 1;
	char choiceChar = 0;
	menu(menuItem);

	while ((choiceChar = _getch()) != 27)  // while not ESC
	{
		switch (choiceChar)
		{
		case 72: menuItem--; break;	// UpArrow
		case 80: menuItem++; break;	// DownArrow 
		case 13:					// Enter
		{
			zadanie(menuItem);
			_getch();
			break;
		}
		default: cout << "Wrong choise!";
		}

		if (menuItem < 1) menuItem = 4;   // wrapping 
		if (menuItem > 4) menuItem = 1;

		menu(menuItem);
		cout << endl << choiceChar << " (" << (int)choiceChar << ")"; // code of the key
	}

	return 0;
}