namespace Chessistics.Engine.Model;

public class PieceState
{
    public int Id { get; }
    public PieceKind Kind { get; }
    public int Level { get; }
    public Coords StartCell { get; private set; }
    public Coords EndCell { get; private set; }
    public Coords CurrentCell { get; set; }
    public CargoType? Cargo { get; set; }
    public CargoType? CargoFilter { get; set; }
    public int SocialStatus { get; }
    public int PlacementOrder { get; }

    public PieceState(int id, PieceKind kind, Coords startCell, Coords endCell, int placementOrder, int level = 1)
    {
        Id = id;
        Kind = kind;
        Level = level;
        StartCell = startCell;
        EndCell = endCell;
        CurrentCell = startCell;
        Cargo = null;
        SocialStatus = PieceRules.GetSocialStatus(kind);
        PlacementOrder = placementOrder;
    }

    /// <summary>
    /// Returns the cell this piece will move to next.
    /// </summary>
    public Coords TargetCell => CurrentCell == StartCell ? EndCell : StartCell;

    /// <summary>
    /// Relocate this piece (drag & drop).
    /// </summary>
    public void SetPosition(Coords newStart, Coords newEnd)
    {
        StartCell = newStart;
        EndCell = newEnd;
        CurrentCell = newStart;
    }

    public PieceState Clone()
    {
        var clone = new PieceState(Id, Kind, StartCell, EndCell, PlacementOrder, Level)
        {
            CurrentCell = CurrentCell,
            Cargo = Cargo,
            CargoFilter = CargoFilter
        };
        return clone;
    }
}