ProjectGrid/Logic/TicTacTocManager.cs

using ProjectGrid.Models;
using System;

namespace ProjectGrid
{
  public interface ITicTacTocManager
  {
    public bool NextMove(TicTacTocRequest move);
    public TicTacTocResponse GetResponse(int player = 0);
  }

  public class TicTacTocManager : ITicTacTocManager
  {
    //private ITicTacToctRepository _repo;

    private int _currentPlayer;

    private TicTacTocBoard _board;
    public TicTacTocBoard Board => _board;

    public TicTacTocManager(/*ITicTacToctRepository repo*/)
    {
      //_repo = repo;
      _currentPlayer = 1;
      Restart();
    }

    public bool NextMove(TicTacTocRequest move)
    {
      var result = _board.SetFieldValue(_currentPlayer, move.Field); //move.PosX, move.PosY);
      // switch between 1 and 2
      _currentPlayer = 3 - _currentPlayer;

      return result;
    }

    public TicTacTocResponse GetResponse(int player = 0)
    {
      TicTacTocResponse response = new TicTacTocResponse();
      if (player > 0 && _board.ValueWon(player))
        response.PlayerWon = player;

      response.Board = _board.Field;

      return response;
    }

    public void Restart()
    {
      _currentPlayer = new Random().Next(1, 2);
      _board = new TicTacTocBoard();
    }
  }
}