//This file is main.C (C++ example).

#include <iostream>
#include <cstdlib>
#include <ctime>
#include <string>
#include <algorithm>   //for fill

#include "printable.h"
#include "terminal.h"

using namespace std;

int main()
{
	srand(static_cast<unsigned>(time(0)));
	const terminal<printable> term('.');
	const terminal<printable>::offset_type off(term.width(), term.height());
	terminal<printable>::iterator it = term.begin();

	string s = "Spiral iterators (counterclockwise).";
	copy(s.begin(), s.end(), it);

	s = "Please type printable characters ending with a q: ";
	copy(s.begin(), s.end(), it + terminal<printable>::offset_type::down());

	s = "abcdefghijklmnopqrstuvwxyz";

	//Spiral centered out in the middle
	it = terminal<printable>::iterator(&term, 3, 5);
	terminal<printable>::spiral_iterator sit = it;
	for (int i = 0; abs(sit) <= 3; ++i, ++sit) {
		*sit = s[i];
	}

	//Spiral centered at upper right corner of screen
	sit = term.begin() + term.width() - 1;
	for (int j = 0; j < s.size(); ++j, ++sit) {
		*sit = s[j];
	}

	//Spiral centered at center of right edge of screen.
	sit = terminal<printable>::iterator(&term,
		term.width() - 1, term.height() / 2);

	for (int j = 0; j < s.size(); ++j, ++sit) {
		*sit = s[j];
	}

	sit = term.begin() + off / 2;
	*sit++ = 'X';

	for (;;) {
		char c;   //uninitialized variable

		while ((c = term.key()) == '\0') {
		}

		if (c == 'q') {
			break;
		}

		try {
			*sit = c;
			++sit;
		}

		catch (const printable::isnt&) {
			term.beep();
		}
	}

	return EXIT_SUCCESS;
}