package model;
import java.util.ArrayList;

public class Game
{
	private boolean	paused;
	private Car[]	cars;
	private Map		map;
	
	private ArrayList<GObserver> obs;

	public static class Builder
	{
		private	int	pnumber	= 3;
		private	Map	map		= null;
		private State state	= new State();

		public Builder setPlayers(int pnumber)
		{
			this.pnumber = pnumber;
			return this;
		}
		
		public Builder setMap(Map map)
		{
			this.map = map;
			return this;
		}
		
		public Builder setState(State s)
		{
			this.state = s;
			return this;
		}
		
		public Builder defaultMap()
		{
			Integer[][] map = new Integer[][]
			{
				{ 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 },
				{ 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  2, -1, -1,  5,  0 },
				{ 0,  3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  2,  0,  0, -1,  0,  0, -1,  0 },
				{ 0, -1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, -1,  0,  0, -1,  0,  0, -1,  0 },
				{ 0, -1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, -1,  0,  0, -1,  0,  0, -1,  0 },
				{ 0, -1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  2, -1, -1,  2,  0,  0, -1,  0 },
				{ 0, -1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, -1,  0 },
				{ 0, -1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, -1,  0 },
				{ 0,  5, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -2, -3,  0 },
				{ 0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 },
			};
			
			this.map = Map.fromInts(map);
			return this;
		}
		
		public Game build()
		{
			if (map == null) defaultMap();
			return new Game(pnumber, map, state);
		}
	}
	
	public Game(int pnumber, Map map, State state)
	{
		int loop	= map.getPathSize();
		this.map	= map;

		cars = new Car[pnumber];
		obs = new ArrayList<>();

		for (int i = 0; i < pnumber; i++)
		{
			Car car = new Car(loop, state);
			cars[i] = car;

			// Observer pour avancer
			obs.add(car);
		}
	}

	private boolean isFinish()
	{
		for (Car car : cars)
		{
			if (car.getFuel() == 0)
				return true;
		}
		return false;
	}

	public synchronized boolean togglePause()
	{
		if (paused) notifyAll();
		paused = !paused;
		return paused;
	}

	private void step() throws InterruptedException
	{
		for (GObserver o : obs)
		{
			synchronized (this)
			{
				// pause du jeu, while si on notifyall sans faire exprès un autre bout de code
				while (paused)
				{
					wait();
				}
			}
			boolean isSuccess = o.apply();
			if (!isSuccess)
			{
				System.err.println("Une erreur s'est produite pendant le jeu.");
				System.exit(1);
			}
		}
	}

	public void run()
	{
		while (!isFinish())
		{
			try 
			{
				step();
				Thread.sleep(1000);
			} 
			catch (InterruptedException e) 
			{ e.printStackTrace(); }
		}
	}

	    /** Retourne la carte du jeu */
    public Map getMap() {
        return map;
    }

    /** Retourne toutes les voitures du jeu */
    public Car[] getCars() {
        return cars;
    }
}