package nim;

import java.util.Random;

public class Game {
	private int[] rows = new int[3];
	private Player player1;
	private Player player2;
	
	public Game(Player player1, Player player2, int top, int middle, int bottom) {
		this.player1 = player1;
		this.player2 = player2;
		rows[0] = top;
		rows[1] = middle;
		rows[2] = bottom;
	}
	
	public Player playGame(boolean output) {
		Random random = new Random();
		Player currentPlayer;
		if(random.nextBoolean())
			currentPlayer = player1;
		else
			currentPlayer = player2;
		
		do
		{
			try {			
				Move move = currentPlayer.makeMove(rows[0], rows[1], rows[2]);
				if(isLegal(move)) {
					rows[move.row.ordinal()] -= move.count;
					if(output)
						System.out.println("Player " + currentPlayer.getName() + " removed "  + move.count + (move.count == 1 ? " object" : " objects") + " from the " + move.row.getName() + " row.");
				}
				else {
					if(output)						
						System.out.println("Player " + currentPlayer.getName() + " made an illegal move.");
					
					break;
				}
			}
			catch(Exception e) { // In case player causes exception
				if(output)						
					System.out.println("Player " + currentPlayer.getName() + " raised an exception.");
				break;
			}
			finally {
				if(currentPlayer == player1)
					currentPlayer = player2;
				else
					currentPlayer = player1;	
			}
			
		} while(rows[0] + rows[1] + rows[2] > 0);
		
		if(output)
			System.out.println("Player " + currentPlayer.getName() + " wins!");
		
		return currentPlayer;
	}
	
	private boolean isLegal(Move move) {
		int row = move.row.ordinal();
		int count = move.count;
		
		return count >= 1 && count <= rows[row];
	}
}