import java.util.Random;

public class TestMain {
	static Random rnd = new Random();
	public static void main(String[] args) throws InterruptedException {

		TV[][] tvs = new TV[10][10];
		for (int col = 0; col < 10; col++)
		{
			for (int row = 0; row < 10; row++)
			{
				tvs[col][row] = new TV(10, 10, 0);
			}
		}

		for (int i = 0; i < 100; i++)
		{
			resetCursorPos();
			printTV(tvs);
			shuffleTV(tvs);
			Thread.sleep(1000);
		}
	}

	private static void shuffleTV(TV[][] tvs) {
		for (int col = 0; col < 10; col++)
		{
			for (int row = 0; row < 10; row++)
			{
				TV t = tvs[col][row];
				t.powered = (rnd.nextInt(10) % 2 == 0);
				for (int i = rnd.nextInt(100); i > 0; i--)
				{
					if (rnd.nextInt(10) % 2 == 0) {
						t.channelUp();
					}
					else
					{
						t.channelDown();
					}
				}
			}
		}
	}

	private static void resetCursorPos() {
		char escCode = 0x1B;
		int row = 10; int column = 10;
		System.out.print(String.format("%c[%d;%df",escCode,row,column));
	}

	private static void printTV(TV[][] tvs) {
		for (int col = 0; col < 10; col++)
		{
			for (int row = 0; row < 10; row++)
			{
				TV t = tvs[col][row];
				System.out.print(padRight(String.format(" Powered %s : Channel %d ", (t.powered ? "On" : "Off"), t.channel), 28));
			}
			System.out.println();
		}
	}

	public static String padRight(String s, int n) {
	     return String.format("%1$-" + n + "s", s);
	}
}