using Gameboard.ShogiUI.BoardState;
using Microsoft.FSharp.Core;
using System;
using System.Numerics;
using ShogiApi = Gameboard.Shogi.Api.ServiceModels.Types;

namespace Gameboard.ShogiUI.Sockets.Models
{
  public class Move
  {
    public string PieceFromCaptured { get; set; }
    public Coords From { get; set; }
    public Coords To { get; set; }
    public bool IsPromotion { get; set; }

    public Move() { }
    public Move(ServiceModels.Socket.Types.Move move)
    {
      From = Coords.FromBoardNotation(move.From);
      To = Coords.FromBoardNotation(move.To);
      PieceFromCaptured = move.PieceFromCaptured;
      IsPromotion = move.IsPromotion;
    }
    public Move(ShogiApi.Move move)
    {
      string pieceFromCaptured = null;
      if (move.PieceFromCaptured != null)
      {
        pieceFromCaptured = move.PieceFromCaptured.Value switch
        {
          ShogiApi.WhichPieceName.Bishop => "",
          ShogiApi.WhichPieceName.GoldenGeneral => "G",
          ShogiApi.WhichPieceName.King => "K",
          ShogiApi.WhichPieceName.Knight => "k",
          ShogiApi.WhichPieceName.Lance => "L",
          ShogiApi.WhichPieceName.Pawn => "P",
          ShogiApi.WhichPieceName.Rook => "R",
          ShogiApi.WhichPieceName.SilverGeneral => "S",
          _ => ""
        };
      }
      From = new Coords(move.Origin.X, move.Origin.Y);
      To = new Coords(move.Destination.X, move.Destination.Y);
      IsPromotion = move.IsPromotion;
      PieceFromCaptured = pieceFromCaptured;
    }
    public ServiceModels.Socket.Types.Move ToServiceModel() => new()
    {
      From = From.ToBoardNotation(),
      IsPromotion = IsPromotion,
      PieceFromCaptured = PieceFromCaptured,
      To = To.ToBoardNotation()
    };
    public ShogiApi.Move ToApiModel()
    {
      var pieceFromCaptured = PieceFromCaptured switch
      {
        "B" => new FSharpOption<ShogiApi.WhichPieceName>(ShogiApi.WhichPieceName.Bishop),
        "G" => new FSharpOption<ShogiApi.WhichPieceName>(ShogiApi.WhichPieceName.GoldenGeneral),
        "K" => new FSharpOption<ShogiApi.WhichPieceName>(ShogiApi.WhichPieceName.King),
        "k" => new FSharpOption<ShogiApi.WhichPieceName>(ShogiApi.WhichPieceName.Knight),
        "L" => new FSharpOption<ShogiApi.WhichPieceName>(ShogiApi.WhichPieceName.Lance),
        "P" => new FSharpOption<ShogiApi.WhichPieceName>(ShogiApi.WhichPieceName.Pawn),
        "R" => new FSharpOption<ShogiApi.WhichPieceName>(ShogiApi.WhichPieceName.Rook),
        "S" => new FSharpOption<ShogiApi.WhichPieceName>(ShogiApi.WhichPieceName.SilverGeneral),
        _ => null
      };
      var target = new ShogiApi.Move
      {
        Origin = new ShogiApi.BoardLocation { X = From.X, Y = From.Y },
        Destination = new ShogiApi.BoardLocation { X = To.X, Y = To.Y },
        IsPromotion = IsPromotion,
        PieceFromCaptured = pieceFromCaptured
      };
      return target;
    }
    public BoardState.Move ToBoardModel()
    {
      return new BoardState.Move
      {
        From = new Vector2(From.X, From.Y),
        IsPromotion = IsPromotion,
        PieceFromCaptured = Enum.TryParse<WhichPiece>(PieceFromCaptured, out var whichPiece) ? whichPiece : null,
        To = new Vector2(To.X, To.Y)
      };
    }
  }
}