using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MiniGames.Shared.Models
{
    public class TicTacToeBrett
    {
        public const int LEER = -1;

        int[,] Felder;

        public TicTacToeBrett()
        {
            Felder = new[,]
            {
                { LEER, LEER, LEER },
                { LEER, LEER, LEER },
                { LEER, LEER, LEER },
            };
        }

        public TicTacToeBrett(int[,] felder)
        {
            Felder = felder;
        }

        public bool Gleich(TicTacToeBrett anderes)
        {
            for (int i = 0; i < 3; i++)
            {
                for (int j = 0; j < 3; j++)
                {
                    if (Felder[i, j] != anderes.Felder[i, j])
                    {
                        return false;
                    }
                }
            }

            return true;
        }

        public bool Set(int pos, int wert)
        {
            int x = pos / 3;
            int y = pos % 3;

            try
            {
                if (Felder[x, y] == LEER)
                {
                    Felder[x, y] = wert;
                    return true;
                }
            }
            catch (IndexOutOfRangeException e)
            {
                // absichtlich leer
            }

            return false;
        }

        public bool Voll()
        {
            for (int i = 0; i < 3; i++)
            {
                for (int j = 0; j < 3; j++)
                {
                    if (Felder[i, j] == LEER)
                    {
                        return false;
                    }
                }
            }

            return true;
        }

        public int Gewinner()
        {
            if (Felder[0, 0] == Felder[0, 1] && Felder[0, 1] == Felder[0, 2] && Felder[0, 0] != LEER)
            {
                return Felder[0, 0];
            }

            if (Felder[1, 0] == Felder[1, 1] && Felder[1, 1] == Felder[1, 2] && Felder[1, 0] != LEER)
            {
                return Felder[1, 0];
            }

            return LEER;
        }
    }
}