using System;
using Vector2I = Vector.Vector2I;

public interface IBoard {
    public int Rows { get; }
    public int Cols { get; }

    public class SetPieceEventArgs : EventArgs {
        public IPiece? OldPiece { get; set; }
        public IPiece? NewPiece { get; set; }
        public Vector2I Pos { get; set; } = new();
    }

    public class MoveEventArgs : EventArgs {
        public IPiece? Piece { get; set; }
        public Vector2I From { get; set; } = new();
        public Vector2I To { get; set; } = new();
    }

    event EventHandler<IPiece> OnInsert;
    event EventHandler<IPiece> OnRemove;
    event EventHandler<MoveEventArgs> OnMove;
    event EventHandler<SetPieceEventArgs> OnSetPiece;

    bool IsPosOutOfRange(Vector2I pos);
    IPiece? GetPiece(Vector2I pos);
    IPiece? SetPiece(IPiece piece, Vector2I pos);
    bool InsertPiece(IPiece piece, Vector2I pos);
    bool MovePiece(Vector2I from, Vector2I to);
    IPiece? RemovePiece(Vector2I pos);
    void Clear();
}