using Chess;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows;

namespace ChessPanel
{
    public class Knight : Piece
    {
        public Knight(PieceColor color, Vector position, Grid fields) : base(position, fields)
        {
            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
            this.color = color;
            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
        }

        internal override bool EndageresFieldWithVirtualMove(Grid fields, Field field, Piece movePiece, Field targetPos)
        {
            for (int a = -1; a < 2; a += 2)
            {
                for (int b = -2; b < 3; b += 4)
                {
                    if (!(a + (int)field.location.X > 7 || b + (int)field.location.Y < 0 || a + (int)field.location.X < 0 || b + (int)field.location.Y > 7))
                    {
                        if ((fields[field.location,a,b].IsEmpty && fields[field.location, a, b] != targetPos) || fields[field.location, a, b] == movePiece.field)
                        {
                            if (fields[field.location, a, b] == field)
                                return true;
                            continue;
                        }
                        else
                        {
                            if (fields[field.location, a, b].CurrentPiece?.color != color)
                                if (fields[field.location, a, b] == field)
                                    return true;
                            break;
                        }
                    }
                    if (!(b + (int)field.location.X > 7 || a + (int)field.location.Y < 0 || b + (int)field.location.X < 0 || a + (int)field.location.Y > 7))
                    {
                        if ((fields[field.location, b, a].IsEmpty && fields[field.location, b, a] != targetPos) || fields[field.location, b, a] == movePiece.field)
                        {
                            if (fields[field.location, b, a] == field)
                                return true;
                            continue;
                        }
                        else
                        {
                            if (fields[field.location, b, a].CurrentPiece?.color != color)
                                if (fields[field.location, b, a] == field)
                                    return true;
                            break;
                        }
                    }
                }
            }
            return false;
        }

        internal override Dictionary<Field, PieceTeam> GetTargetFields(Grid fields, Field field, PieceColor color)
        {
            Dictionary<Field, PieceTeam> targetFields = new Dictionary<Field, PieceTeam>();

            for (int a = -1; a < 2; a += 2)
            {
                for (int b = -2; b < 3; b += 4)
                {
                    if (!(a + (int)field.location.X > 7 || b + (int)field.location.Y < 0 || a + (int)field.location.X < 0 || b + (int)field.location.Y > 7))
                    {
                        if (fields[field.location,a,b].IsEmpty)
                        {
                            targetFields.Add(fields[field.location, a, b], PieceTeam.Ally);
                        }
                        else
                        {
                            if (fields[field.location, a, b].CurrentPiece?.color != color)
                                targetFields.Add(fields[field.location, a, b], PieceTeam.Enemy);
                        }
                    }
                    if (!(b + (int)field.location.X > 7 || a + (int)field.location.Y < 0 || b + (int)field.location.X < 0 || a + (int)field.location.Y > 7))
                    {
                        if (fields[field.location, b, a].IsEmpty)
                        {
                            targetFields.Add(fields[field.location, b, a], PieceTeam.Ally);
                        }
                        else
                        {
                            if (fields[field.location, b, a].CurrentPiece?.color != color)
                                targetFields.Add(fields[field.location, b, a], PieceTeam.Enemy);
                        }
                    }
                }
            }
            return targetFields;
        }
    } // FINALIZED
}