using Microsoft.FSharp.Core;
using Websockets.ServiceModels.Types;
using GameboardTypes = Gameboard.Shogi.Api.ServiceModels.Types;

namespace Websockets.Managers.Utility
{
    public static class Mapper
    {
        public static GameboardTypes.Move Map(Move source)
        {
            var from = source.From;
            var to = source.To;
            FSharpOption<GameboardTypes.PieceName> pieceFromCaptured = source.PieceFromCaptured switch
            {
                "B" => new FSharpOption<GameboardTypes.PieceName>(GameboardTypes.PieceName.Bishop),
                "G" => new FSharpOption<GameboardTypes.PieceName>(GameboardTypes.PieceName.GoldenGeneral),
                "K" => new FSharpOption<GameboardTypes.PieceName>(GameboardTypes.PieceName.King),
                "k" => new FSharpOption<GameboardTypes.PieceName>(GameboardTypes.PieceName.Knight),
                "L" => new FSharpOption<GameboardTypes.PieceName>(GameboardTypes.PieceName.Lance),
                "P" => new FSharpOption<GameboardTypes.PieceName>(GameboardTypes.PieceName.Pawn),
                "R" => new FSharpOption<GameboardTypes.PieceName>(GameboardTypes.PieceName.Rook),
                "S" => new FSharpOption<GameboardTypes.PieceName>(GameboardTypes.PieceName.SilverGeneral),
                _ => null
            };
            var target = new GameboardTypes.Move
            {
                Origin = new GameboardTypes.BoardLocation { X = from.X, Y = from.Y },
                Destination = new GameboardTypes.BoardLocation { X = to.X, Y = to.Y },
                IsPromotion = source.IsPromotion,
                PieceFromCaptured = pieceFromCaptured
            };
            return target;
        }

        public static Move Map(GameboardTypes.Move source)
        {
            var origin = source.Origin;
            var destination = source.Destination;
            string pieceFromCaptured = null;
            if (source.PieceFromCaptured != null)
            {
                pieceFromCaptured = source.PieceFromCaptured.Value switch
                {
                    GameboardTypes.PieceName.Bishop => "B",
                    GameboardTypes.PieceName.GoldenGeneral => "G",
                    GameboardTypes.PieceName.King => "K",
                    GameboardTypes.PieceName.Knight => "k",
                    GameboardTypes.PieceName.Lance => "L",
                    GameboardTypes.PieceName.Pawn => "P",
                    GameboardTypes.PieceName.Rook => "R",
                    GameboardTypes.PieceName.SilverGeneral => "S",
                    _ => ""
                };
            }

            var target = new Move
            {
                From = new Coords { X = origin.X, Y = origin.Y },
                To = new Coords { X = destination.X, Y = destination.Y },
                IsPromotion = source.IsPromotion,
                PieceFromCaptured = pieceFromCaptured
            };

            return target;
        }
    }
}