package de.vivi.chess.pieces;

import de.vivi.chess.board.Board;
import de.vivi.chess.board.Field;

public class Queen extends Piece {
    public Queen(Color color, Type type) {
        super(color, type);
    }

    public Queen(Color color, Type type, Field field) {
        super(color, type, field);
    }

    @Override
    public char getSymbol() {
        if (getColor() == Color.WHITE) {
            if (getType() == Type.QUEEN) {
                symbol = '\u265B';
            }

        } else if (getColor() == Color.BLACK) {
            if (getType() == Type.QUEEN) {
                symbol = '\u2655';
            }
        }
        return symbol;
    }

    @Override
    public boolean isValidMove(Board board, Field from, Field to) {
        if (to.equals(from)) {
            return false;
        }

        int rowDiff = Math.abs(to.getRow() - from.getRow());
        int colDiff = Math.abs(to.getColumn() - from.getColumn());

        boolean straightLine = from.getRow() == to.getRow()
                || from.getColumn() == to.getColumn();

        boolean diagonal = rowDiff == colDiff;

        if (!straightLine && !diagonal) {
            return false;
        }

        int rowDirection = Integer.compare(to.getRow(), from.getRow());
        int colDirection = Integer.compare(to.getColumn(), from.getColumn());

        int currentRow = from.getRow() + rowDirection;
        int currentCol = from.getColumn() + colDirection;
        while (currentRow != to.getRow() || currentCol != to.getColumn()) {
            if (board.getPiece(Field.from(currentCol, currentRow)) != null) {
                return false;
            }
            currentRow += rowDirection;
            currentCol += colDirection;
        }

        Piece destinationPiece = board.getPiece(Field.from(to.getColumn(), to.getRow()));
        return destinationPiece == null || destinationPiece.getColor() != this.getColor();
    }
}