package de.vivi.chess.game;

import de.vivi.chess.board.Board;
import de.vivi.chess.board.Field;
import de.vivi.chess.pieces.Color;
import de.vivi.chess.pieces.Piece;
import java.util.Scanner;

import static de.vivi.chess.pieces.Color.BLACK;
import static de.vivi.chess.pieces.Color.WHITE;

public class Game {

    private final Board board;

    private Color player;

    private int count = 0;

    /**
     * TODO: implement
     */
    public Game() {
        board = new Board();
        player = null;
    }

    /**
     * TODO: implement
     * <p>
     * Starts the game and should process the game like it is
     * specified inside example-output.txt.
     */
    public void play() {
        System.out.println("Welcome to Vivi's Chess Game!");
        System.out.println(board);
        player = ((count % 2) == 0) ? WHITE : BLACK;
        System.out.println("It is white's turn: [from:to]");

        Scanner scanner = new Scanner(System.in);

        while (scanner.hasNext()) {

                scanner.useDelimiter(":\\s*");
                String fromString = scanner.nextLine();

                char[] arrayInRange = fromString.toCharArray();

                if ((arrayInRange[0] == 'A' ||
                        arrayInRange[0] == 'B' ||
                        arrayInRange[0] == 'C' ||
                        arrayInRange[0] == 'D' ||
                        arrayInRange[0] == 'E' ||
                        arrayInRange[0] == 'F' ||
                        arrayInRange[0] == 'G' ||
                        arrayInRange[0] == 'H' ) &&
                    (arrayInRange[1] == '0' ||
                            arrayInRange[1] == '1' ||
                            arrayInRange[1] == '2' ||
                            arrayInRange[1] == '3' ||
                            arrayInRange[1] == '4' ||
                            arrayInRange[1] == '5' ||
                            arrayInRange[1] == '6' ||
                            arrayInRange[1] == '7' ||
                            arrayInRange[1] == '8' )) {

                    StringBuilder sb=new StringBuilder(fromString);
                    int l=sb.length();
                    if (l == 2) {
                        String toString = scanner.nextLine();
                        Field from = Field.fromString(fromString);
                        Field to = Field.fromString(toString);

                        if (player == WHITE && board.getPiece(from).getColor() == WHITE) {
                            if (board.getPiece(from).isValidMove(board, from,to)) {
                                //System.out.println(board.getPiece(from).isValidMove(board, from,to));
                                count++;
                                board.move(from, to);
                                System.out.println("Moving white " + board.getPiece(to).getType()
                                        + " from " + fromString + " to " + toString);
                            }
                            System.out.println(board);
                        } else if (player == BLACK && board.getPiece(from).getColor() == BLACK) {
                            if (board.getPiece(from).isValidMove(board, from,to)) {
                                count++;
                                board.move(from, to);
                                System.out.println("Moving black " + board.getPiece(to).getType()
                                        + " from " + fromString + " to " + toString);
                            }
                            System.out.println(board);
                        } else {
                            System.err.println("Illegal move, try again: ");
                        }
                        player = ((count % 2) == 0) ? WHITE : BLACK;
                        if (player == BLACK) {
                            System.out.println("It is black's turn: [from:to]");
                        } else {
                            System.out.println("It is white's turn: [from:to]");
                        }
                    } else {
                        System.err.println("Illegal move, try again: ");
                    }
                } else
                    System.err.println("Illegal move, try again: ");
                }


    }
}