using System.IO;
using uqac_ia_sudoku_csp.Interfaces;

namespace uqac_ia_sudoku_csp.Solver.Generators
{
    public class TextReaderGeneratorDbo
    {
        public TextReader Reader { get; set; }

        public string EmptyCharacters { get; set; }
    }

    public class TextReaderGenerator : IGenerator
    {
        public virtual void Generate(Board board, object data)
        {
            var dbo = data as TextReaderGeneratorDbo;
            for (var y = 0; y < board.Size; ++y)
            {
                for (var x = 0; x < board.Size; ++x)
                {
                    string c;
                    do
                    {
                        c = $"{(char)dbo.Reader.Read()}";
                    } while (!dbo.EmptyCharacters.Contains(c) && !board.Characters.Contains(c));
                    if (dbo.EmptyCharacters.Contains(c))
                    {
                        board.ClearNumber(x, y);
                    }
                    else if (board.Characters.Contains(c))
                    {
                        board.SetCharacter(x, y, c[0]);
                    }
                }
            }
        }
    }
}