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import chess
from typing import Iterator, Optional, Dict, Tuple
from chess import Move, BB_ALL, Bitboard, PieceType, Color
import time
from collections import deque
import threading

# Definice nových figur
AMAZON = 7
CYRIL = 8
EVE = 9

# Rozšíření seznamu PIECE_SYMBOLS
chess.PIECE_SYMBOLS.append('a')
chess.PIECE_SYMBOLS.append('c')
chess.PIECE_SYMBOLS.append('e')

class CustomBoard(chess.Board):
    def __init__(self, fen=None):
        self.amazons_white = chess.BB_EMPTY
        self.amazons_black = chess.BB_EMPTY
        self.cyrils_white = chess.BB_EMPTY
        self.cyrils_black = chess.BB_EMPTY
        self.eves_white = chess.BB_EMPTY
        self.eves_black = chess.BB_EMPTY
        super().__init__(None)
        if fen:
            self.set_custom_fen(fen)
        self.debug_amazons()
        self.debug_cyrils()
        self.debug_eves()

    def clear_square(self, square):
        super()._remove_piece_at(square)
        self.amazons_white &= ~chess.BB_SQUARES[square]
        self.amazons_black &= ~chess.BB_SQUARES[square]
        self.cyrils_white &= ~chess.BB_SQUARES[square]
        self.cyrils_black &= ~chess.BB_SQUARES[square]
        self.eves_white &= ~chess.BB_SQUARES[square]
        self.eves_black &= ~chess.BB_SQUARES[square]

    def set_custom_fen(self, fen):
        parts = fen.split()
        board_part = parts[0]

        self.clear()
        self.amazons_white = chess.BB_EMPTY
        self.amazons_black = chess.BB_EMPTY
        self.cyrils_white = chess.BB_EMPTY
        self.cyrils_black = chess.BB_EMPTY
        self.eves_white = chess.BB_EMPTY
        self.eves_black = chess.BB_EMPTY

        square = 56
        for c in board_part:
            if c == '/':
                square -= 16
            elif c.isdigit():
                square += int(c)
            else:
                color = chess.WHITE if c.isupper() else chess.BLACK
                if c.upper() == 'A':
                    if color == chess.WHITE:
                        self.amazons_white |= chess.BB_SQUARES[square]
                    else:
                        self.amazons_black |= chess.BB_SQUARES[square]
                    piece_type = AMAZON
                elif c.upper() == 'C':
                    if color == chess.WHITE:
                        self.cyrils_white |= chess.BB_SQUARES[square]
                    else:
                        self.cyrils_black |= chess.BB_SQUARES[square]
                    piece_type = CYRIL
                elif c.upper() == 'E':
                    if color == chess.WHITE:
                        self.eves_white |= chess.BB_SQUARES[square]
                    else:
                        self.eves_black |= chess.BB_SQUARES[square]
                    piece_type = EVE
                elif c == 'P' and chess.square_rank(square) == 7:
                    piece_type = AMAZON
                    color = chess.WHITE
                elif c == 'p' and chess.square_rank(square) == 0:
                    piece_type = AMAZON
                    color = chess.BLACK
                else:
                    piece_type = chess.PIECE_SYMBOLS.index(c.lower())

                self._set_piece_at(square, piece_type, color)
                square += 1

        self.turn = chess.WHITE if parts[1] == 'w' else chess.BLACK
        self.castling_rights = chess.BB_EMPTY
        if '-' not in parts[2]:
            if 'K' in parts[2]: self.castling_rights |= chess.BB_H1
            if 'Q' in parts[2]: self.castling_rights |= chess.BB_A1
            if 'k' in parts[2]: self.castling_rights |= chess.BB_H8
            if 'q' in parts[2]: self.castling_rights |= chess.BB_A8
        self.ep_square = chess.parse_square(parts[3]) if parts[3] != '-' else None


    def _set_piece_at(self, square: chess.Square, piece_type: PieceType, color: Color) -> None:
        self.clear_square(square)
        super()._set_piece_at(square, piece_type, color)
        if piece_type == AMAZON:
            if color == chess.WHITE:
                self.amazons_white |= chess.BB_SQUARES[square]
            else:
                self.amazons_black |= chess.BB_SQUARES[square]
        elif piece_type == CYRIL:
            if color == chess.WHITE:
                self.cyrils_white |= chess.BB_SQUARES[square]
            else:
                self.cyrils_black |= chess.BB_SQUARES[square]
        elif piece_type == EVE:
            if color == chess.WHITE:
                self.eves_white |= chess.BB_SQUARES[square]
            else:
                self.eves_black |= chess.BB_SQUARES[square]

    def piece_at(self, square: chess.Square) -> Optional[chess.Piece]:
        if self.amazons_white & chess.BB_SQUARES[square]:
            return chess.Piece(AMAZON, chess.WHITE)
        elif self.amazons_black & chess.BB_SQUARES[square]:
            return chess.Piece(AMAZON, chess.BLACK)
        elif self.cyrils_white & chess.BB_SQUARES[square]:
            return chess.Piece(CYRIL, chess.WHITE)
        elif self.cyrils_black & chess.BB_SQUARES[square]:
            return chess.Piece(CYRIL, chess.BLACK)
        elif self.eves_white & chess.BB_SQUARES[square]:
            return chess.Piece(EVE, chess.WHITE)
        elif self.eves_black & chess.BB_SQUARES[square]:
            return chess.Piece(EVE, chess.BLACK)
        return super().piece_at(square)

    def generate_pseudo_legal_moves(self, from_mask: Bitboard = BB_ALL, to_mask: Bitboard = BB_ALL) -> Iterator[Move]:
        our_pieces = self.occupied_co[self.turn]
        if self.turn == chess.WHITE:
            our_amazons = self.amazons_white
            our_cyrils = self.cyrils_white
            our_eves = self.eves_white
        else:
            our_amazons = self.amazons_black
            our_cyrils = self.cyrils_black
            our_eves = self.eves_black

        # Generování tahů pro amazonky
        for from_square in chess.scan_forward(our_amazons & from_mask):
            attacks = self.amazon_attacks(from_square)
            valid_moves = attacks & ~our_pieces & to_mask
            for to_square in chess.scan_forward(valid_moves):
                yield Move(from_square, to_square)

        # Generování tahů pro Cyrily
        for from_square in chess.scan_forward(our_cyrils & from_mask):
            attacks = self.cyril_attacks(from_square)
            valid_moves = attacks & ~our_pieces & to_mask
            for to_square in chess.scan_forward(valid_moves):
                yield Move(from_square, to_square)

        # Generování tahů pro Evy
        for from_square in chess.scan_forward(our_eves & from_mask):
            attacks = self.eve_attacks(from_square)
            valid_moves = attacks & ~our_pieces & to_mask
            for to_square in chess.scan_forward(valid_moves):
                yield Move(from_square, to_square)

        # Generování tahů pro standardní figury
        for move in super().generate_pseudo_legal_moves(from_mask, to_mask):
            piece = self.piece_at(move.from_square)
            if piece and piece.piece_type not in [AMAZON, CYRIL, EVE]:
                yield move

    def queen_attacks(self, square):
        return self.bishop_attacks(square) | self.rook_attacks(square)

    def bishop_attacks(self, square):
        return chess.BB_DIAG_ATTACKS[square][self.occupied & chess.BB_DIAG_MASKS[square]]

    def rook_attacks(self, square):
        return (chess.BB_RANK_ATTACKS[square][self.occupied & chess.BB_RANK_MASKS[square]] |
                chess.BB_FILE_ATTACKS[square][self.occupied & chess.BB_FILE_MASKS[square]])

    def amazon_attacks(self, square):
        return self.queen_attacks(square) | chess.BB_KNIGHT_ATTACKS[square]

    def cyril_attacks(self, square):
        return self.rook_attacks(square) | chess.BB_KNIGHT_ATTACKS[quare]

    def eve_attacks(self, square):
        return self.bishop_attacks(square) | chess.BB_KNIGHT_ATTACKS[square]

    def is_pseudo_legal(self, move):
        from_square = move.from_square
        to_square = move.to_square
        piece = self.piece_at(from_square)

        if not piece or piece.color != self.turn:
            return False

        if self.occupied_co[self.turn] & chess.BB_SQUARES[to_square]:
            return False

        if self.is_castling(move):
            return True

        if piece.piece_type == AMAZON:
            return bool(self.amazon_attacks(from_square) & chess.BB_SQUARES[to_square])
        elif piece.piece_type == CYRIL:
            return bool(self.cyril_attacks(from_square) & chess.BB_SQUARES[to_square])
        elif piece.piece_type == EVE:
            return bool(self.eve_attacks(from_square) & chess.BB_SQUARES[to_square])
        else:
            return super().is_pseudo_legal(move)

    def is_legal(self, move):
        if not self.is_pseudo_legal(move):
            return False

        from_square = move.from_square
        to_square = move.to_square
        piece = self.piece_at(from_square)
        captured_piece = self.piece_at(to_square)

        self.clear_square(from_square)
        self.clear_square(to_square)
        self._set_piece_at(to_square, piece.piece_type, piece.color)

        king_square = to_square if piece.piece_type == chess.KING else self.king(self.turn)
        is_check = False
        if king_square is not None:
            is_check = self._is_attacked_by(not self.turn, king_square)

        self.clear_square(to_square)
        self._set_piece_at(from_square, piece.piece_type, piece.color)
        if captured_piece:
            self._set_piece_at(to_square, captured_piece.piece_type, captured_piece.color)

        return not is_check


    def _is_attacked_by(self, color, square):
        attackers = self.attackers(color, square)
        return bool(attackers)

    def attackers(self, color, square):
        if square is None:
            return chess.BB_EMPTY

        attackers = chess.BB_EMPTY
        occupied = self.occupied

        # Knights
        knights = self.knights & self.occupied_co[color]
        if chess.BB_KNIGHT_ATTACKS[square] & knights:
            attackers |= knights & chess.BB_KNIGHT_ATTACKS[square]

        # King
        king = self.kings & self.occupied_co[color]
        if chess.BB_KING_ATTACKS[square] & king:
            attackers |= king

        # Pawns
        pawns = self.pawns & self.occupied_co[color]
        pawn_attacks = chess.BB_PAWN_ATTACKS[not color][square]
        if pawn_attacks & pawns:
            attackers |= pawns & pawn_attacks

        # Queens
        queens = self.queens & self.occupied_co[color]
        queen_attacks = (
            chess.BB_DIAG_ATTACKS[square][self.occupied & chess.BB_DIAG_MASKS[square]] |
            chess.BB_RANK_ATTACKS[square][self.occupied & chess.BB_RANK_MASKS[square]] |
            chess.BB_FILE_ATTACKS[square][self.occupied & chess.BB_FILE_MASKS[square]]
        )
        if queen_attacks & queens:
            attackers |= queens & queen_attacks

        # Bishops
        bishops = self.bishops & self.occupied_co[color]
        bishop_attacks = chess.BB_DIAG_ATTACKS[square][self.occupied & chess.BB_DIAG_MASKS[square]]
        if bishop_attacks & bishops:
            attackers |= bishops & bishop_attacks

        # Rooks
        rooks = self.rooks & self.occupied_co[color]
        rook_attacks = (
            chess.BB_RANK_ATTACKS[square][self.occupied & chess.BB_RANK_MASKS[square]] |
            chess.BB_FILE_ATTACKS[square][self.occupied & chess.BB_FILE_MASKS[square]]
        )
        if rook_attacks & rooks:
            attackers |= rooks & rook_attacks

        # Amazons (Queen + Knight)
        amazons = self.amazons_white if color == chess.WHITE else self.amazons_black
        for amazon_square in chess.scan_forward(amazons):
            amazon_attacks = (
                chess.BB_DIAG_ATTACKS[amazon_square][self.occupied & chess.BB_DIAG_MASKS[amazon_square]] |
                chess.BB_RANK_ATTACKS[amazon_square][self.occupied & chess.BB_RANK_MASKS[amazon_square]] |
                chess.BB_FILE_ATTACKS[amazon_square][self.occupied & chess.BB_FILE_MASKS[amazon_square]] |
                chess.BB_KNIGHT_ATTACKS[amazon_square]
            )
            if amazon_attacks & chess.BB_SQUARES[square]:
                attackers |= chess.BB_SQUARES[amazon_square]

        # Cyrils (Rook + Knight)
        cyrils = self.cyrils_white if color == chess.WHITE else self.cyrils_black
        for cyril_square in chess.scan_forward(cyrils):
            cyril_attacks = (
                chess.BB_RANK_ATTACKS[cyril_square][self.occupied & chess.BB_RANK_MASKS[cyril_square]] |
                chess.BB_FILE_ATTACKS[cyril_square][self.occupied & chess.BB_FILE_MASKS[cyril_square]] |
                chess.BB_KNIGHT_ATTACKS[cyril_square]
            )
            if cyril_attacks & chess.BB_SQUARES[square]:
                attackers |= chess.BB_SQUARES[cyril_square]

        # Eves (Bishop + Knight)
# Eves (Bishop + Knight)
        eves = self.eves_white if color == chess.WHITE else self.eves_black
        for eve_square in chess.scan_forward(eves):
            eve_attacks = (
                chess.BB_DIAG_ATTACKS[eve_square][self.occupied & chess.BB_DIAG_MASKS[eve_square]] |
                chess.BB_KNIGHT_ATTACKS[eve_square]
            )
            if eve_attacks & chess.BB_SQUARES[square]:
                attackers |= chess.BB_SQUARES[eve_square]

        return attackers

    def push(self, move):
        if not self.is_legal(move):
            raise ValueError(f"Move {move} is not legal in position {self.fen()}")

        piece = self.piece_at(move.from_square)
        captured_piece = self.piece_at(move.to_square)

        self.clear_square(move.from_square)
        self.clear_square(move.to_square)
        self._set_piece_at(move.to_square, piece.piece_type, piece.color)

        self.turn = not self.turn

        self.move_stack.append((move, captured_piece))

    def pop(self):
        if not self.move_stack:
            return None

        move, captured_piece = self.move_stack.pop()

        piece = self.piece_at(move.to_square)

        self.clear_square(move.from_square)
        self.clear_square(move.to_square)

        self._set_piece_at(move.from_square, piece.piece_type, piece.color)

        if captured_piece:
            self._set_piece_at(move.to_square, captured_piece.piece_type, captured_piece.color)

        self.turn = not self.turn

        return move

    def is_check(self):
        king_square = self.king(self.turn)
        if king_square is None:
            return False
        is_check = self._is_attacked_by(not self.turn, king_square)
        return is_check

    def is_checkmate(self):
        if not self.is_check():
            return False
        legal_moves = list(self.generate_legal_moves())
        return len(legal_moves) == 0

    def is_game_over(self):
        return self.is_checkmate() or self.is_stalemate() or self.is_insufficient_material()

    def is_stalemate(self):
        if self.is_check():
            return False
        legal_moves = list(self.generate_legal_moves())
        return len(legal_moves) == 0

    def is_insufficient_material(self):
        return (self.pawns | self.rooks | self.queens | self.amazons_white | self.amazons_black |
                self.cyrils_white | self.cyrils_black | self.eves_white | self.eves_black) == 0 and (
            chess.popcount(self.occupied) <= 3
        )

    def generate_legal_moves(self, from_mask=chess.BB_ALL, to_mask=chess.BB_ALL):
        for move in self.generate_pseudo_legal_moves(from_mask, to_mask):
            if self.is_legal(move):
                yield move

    def debug_amazons(self):
        pass

    def debug_cyrils(self):
        pass

    def debug_eves(self):
        pass

    def piece_symbol(self, piece):
        if piece is None:
            return '.'
        if piece.piece_type == AMAZON:
            return 'A' if piece.color == chess.WHITE else 'a'
        if piece.piece_type == CYRIL:
            return 'C' if piece.color == chess.WHITE else 'c'
        if piece.piece_type == EVE:
            return 'E' if piece.color == chess.WHITE else 'e'
        return piece.symbol()

    def piece_type_at(self, square):
        if (self.amazons_white | self.amazons_black) & chess.BB_SQUARES[square]:
            return AMAZON
        if (self.cyrils_white | self.cyrils_black) & chess.BB_SQUARES[square]:
            return CYRIL
        if (self.eves_white | self.eves_black) & chess.BB_SQUARES[square]:
            return EVE
        return super().piece_type_at(square)

    def color_at(self, square):
        if self.amazons_white & chess.BB_SQUARES[square]:
            return chess.WHITE
        if self.amazons_black & chess.BB_SQUARES[square]:
            return chess.BLACK
        if self.cyrils_white & chess.BB_SQUARES[square]:
            return chess.WHITE
        if self.cyrils_black & chess.BB_SQUARES[square]:
            return chess.BLACK
        if self.eves_white & chess.BB_SQUARES[square]:
            return chess.WHITE
        if self.eves_black & chess.BB_SQUARES[square]:
            return chess.BLACK
        return super().color_at(square)

    @property
    def legal_moves(self):
        return list(self.generate_legal_moves())

    def __str__(self):
        builder = []
        for square in chess.SQUARES_180:
            piece = self.piece_at(square)
            symbol = self.piece_symbol(piece) if piece else '.'
            builder.append(symbol)
            if chess.square_file(square) == 7:
                if square != chess.H1:
                    builder.append('\n')
        return ''.join(builder)

def format_time(seconds):
    hours, remainder = divmod(seconds, 3600)
    minutes, seconds = divmod(remainder, 60)
    return f"{int(hours):02d}h {int(minutes):02d}m {int(seconds):02d}s"

def print_elapsed_time(stop_event, start_time):
    while not stop_event.is_set():
        elapsed_time = time.time() - start_time
        print(f"\rUplynulý čas: {format_time(elapsed_time)}", end="", flush=True)
        time.sleep(1)

def simplify_fen(fen):
    return ' '.join(fen.split()[:4])

def calculate_optimal_moves(start_fen: str) -> Dict[str, Tuple[int, str]]:
    print("Funkce calculate_optimal_moves byla zavolána")
    print(f"Počáteční FEN: {start_fen}")

    board = CustomBoard(start_fen)
    POZ = {1: simplify_fen(start_fen)}
    AR = {simplify_fen(start_fen): {'used': 0, 'to_end': None, 'depth': 0, 'type': 'normal'}}
    N = 1
    M = 0

    start_time = time.time()
    current_depth = 0
    positions_at_depth = {0: 0}
    depth_start_time = start_time

    stop_event = threading.Event()
    timer_thread = threading.Thread(target=print_elapsed_time, args=(stop_event, start_time))
    timer_thread.start()

    try:
        print("Začínám generovat pozice...")
        print("Počáteční pozice:")
        print_board(start_fen)

        depth_1_positions = []  # Seznam pro ukládání pozic v hloubce 1

        # Generate all positions
        while M < N:
            M += 1
            current_fen = POZ[M]
            board.set_custom_fen(current_fen)
            simplified_current_fen = simplify_fen(current_fen)
            current_depth = AR[simplified_current_fen]['depth']

            if current_depth not in positions_at_depth:
                positions_at_depth[current_depth] = 0
                if current_depth > 0:
                    depth_time = time.time() - depth_start_time
                    total_time = time.time() - start_time
                    print(f"\nHloubka {current_depth - 1}: {positions_at_depth[current_depth - 1]} pozic, "
                          f"Čas hloubky: {format_time(depth_time)} / Celkový čas: {format_time(total_time)}")

                    if current_depth == 1:
                        print("Všechny pozice v hloubce 1:")
                        for pos in depth_1_positions:
                            print_board(pos)
                            print()

                depth_start_time = time.time()

            positions_at_depth[current_depth] += 1

            if current_depth == 1:
                depth_1_positions.append(current_fen)

            if AR[simplified_current_fen]['used'] == 0:
                AR[simplified_current_fen]['used'] = 1
                legal_moves = list(board.legal_moves)
                for move in legal_moves:
                    board.push(move)
                    POZ2 = board.fen()
                    simplified_POZ2 = simplify_fen(POZ2)
                    if simplified_POZ2 not in AR:
                        N += 1
                        POZ[N] = simplified_POZ2
                        AR[simplified_POZ2] = {'used': 0, 'to_end': None, 'depth': current_depth + 1, 'type': 'normal'}
                    board.pop()

        # Print last depth
        depth_time = time.time() - depth_start_time
        total_time = time.time() - start_time
        print(f"\nHloubka {current_depth}: {positions_at_depth[current_depth]} pozic, "
              f"Čas hloubky: {format_time(depth_time)} / Celkový čas: {format_time(total_time)}")
        print(f"Příklad pozice v hloubce {current_depth}:")
        print_board(current_fen)

        print(f"Generování pozic dokončeno. Celkový počet pozic: {N}")

        # Initial evaluation
        print("\nZačínám počáteční ohodnocení...")
        F_checkmate = 0
        F_stalemate = 0
        F_drawing = 0
        F_check = 0
        F_normal = 0
        for i in range(1, N + 1):
            current_fen = POZ[i]
            board.set_custom_fen(current_fen)
            simplified_current_fen = simplify_fen(current_fen)

            if board.is_checkmate():
                AR[simplified_current_fen]['to_end'] = -1000
                AR[simplified_current_fen]['type'] = 'checkmate'
                F_checkmate += 1
            elif board.is_stalemate():
                AR[simplified_current_fen]['to_end'] = 0
                AR[simplified_current_fen]['type'] = 'stalemate'
                F_stalemate += 1
            elif board.is_insufficient_material():
                AR[simplified_current_fen]['to_end'] = 0
                AR[simplified_current_fen]['type'] = 'drawing'
                F_drawing += 1
            elif board.is_check():
                AR[simplified_current_fen]['to_end'] = None
                AR[simplified_current_fen]['type'] = 'check'
                F_check += 1
            else:
                AR[simplified_current_fen]['to_end'] = None
                AR[simplified_current_fen]['type'] = 'normal'
                F_normal += 1

        print(f"Počet pozic v matu je {F_checkmate}")
        print(f"Počet pozic v patu je {F_stalemate}")
        print(f"Počet pozic v remíze je {F_drawing}")
        print(f"Počet pozic v šachu je {F_check}")
        print(f"Počet normálních pozic je {F_normal}")

        # Iterative evaluation
        print("\nZačínám iterativní ohodnocení...")
        uroven = 0
        while True:
            uroven += 1
            level_start_time = time.time()
            print(f"Výpočet v úrovni {uroven}")

            changed = False
            current_level_positions = 0
            for i in range(1, N + 1):
                current_fen = POZ[i]
                board.set_custom_fen(current_fen)
                simplified_current_fen = simplify_fen(current_fen)
                if AR[simplified_current_fen]['to_end'] is None or AR[simplified_current_fen]['to_end'] == 0:
                    hod = -2000
                    for move in board.legal_moves:
                        board.push(move)
                        POZ2 = board.fen()
                        simplified_POZ2 = simplify_fen(POZ2)
                        if simplified_POZ2 in AR and AR[simplified_POZ2]['to_end'] is not None:
                            hod2 = -AR[simplified_POZ2]['to_end']
                            if hod2 > hod:
                                hod = hod2
                        board.pop()

                    if hod == 1001 - uroven:
                        new_to_end = 1000 - uroven
                        new_type = 'winning'
                    elif hod == -1001 + uroven:
                        new_to_end = -1000 + uroven
                        new_type = 'losing'
                    elif hod == 0:
                        new_to_end = 0
                        new_type = 'drawing'
                    elif hod > -2000:  # Pokud byl nalezen alespoň jeden platný tah
                        new_to_end = hod
                        new_type = 'normal'
                    else:
                        new_to_end = None
                        new_type = None

                    if new_to_end is not None and (AR[simplified_current_fen]['to_end'] != new_to_end or AR[simplified_current_fen]['type'] != new_type):
                        AR[simplified_current_fen]['to_end'] = new_to_end
                        AR[simplified_current_fen]['type'] = new_type
                        changed = True
                        current_level_positions += 1

            level_end_time = time.time()
            total_elapsed_time = level_end_time - start_time
            level_elapsed_time = level_end_time - level_start_time
            print(f"Nalezeno {current_level_positions} pozic v úrovni {uroven}")
            print(f"Čas úrovně: {format_time(level_elapsed_time)} / Celkový čas: {format_time(total_elapsed_time)}")

            if not changed:
                print("Hodnocení ukončeno - žádné další změny.")
                break

        print(f"Celkem nalezeno {sum(1 for data in AR.values() if data['to_end'] is not None)} ohodnocených pozic")

        print("\nVýpočet dokončen.")
        return {fen: (data['to_end'], data['type']) for fen, data in AR.items() if data['to_end'] is not None}

    finally:
        stop_event.set()
        timer_thread.join()


# Helper function to print the board
def print_board(fen):
    board = CustomBoard(fen)
    print(board)

# Najděte nejmenší kladnou hodnotu to_end ve všech FEN záznamech v AR
def find_min_positive_value(AR):
    min_positive_value = float('inf')
    min_fen = None

    for fen, (value, type_pozice) in AR.items():
        if value is not None and value > 0 and value < min_positive_value:
            min_positive_value = value
            min_fen = fen

    if min_positive_value == float('inf'):
        print("Žádná kladná hodnota nebyla nalezena.")
    else:
        print(f"Nejmenší kladná hodnota: {min_positive_value}, FEN: {min_fen}")

# Main execution
# Main execution
if __name__ == "__main__":
    start_fen = "7K/8/k1P5/7p/8/8/8/8 w - - 0 1"

    start_fen = "7K/8/8/8/8/k7/8/7A w - - 0 1"

 #   start_fen = "7K/8/8/2a5/8/1k6/8/7A w - - 0 1"

    start_fen = "7K/8/k1P5/7p/8/8/8/8 w - - 0 1"

    start_fen = "6K1/3E4/8/8/8/k7/8/8 w - - 0 1"

    start_fen = "8/5A2/8/8/2K5/8/ka6/8 w - - 0 1"

    AR = calculate_optimal_moves(start_fen)

    find_min_positive_value(AR)

    # print("\nVýsledky:")
    # for hodnota in range(-996, -1001, -1):  # Generuje hodnoty -996, -997, -998, -999, -1000
    #     for fen, (fen_hodnota, typ_pozice) in AR.items():
    #         if fen_hodnota == hodnota:
    #             print(f"FEN: {fen}")
    #             print(f"Hodnota: {fen_hodnota}")
    #             print(f"Typ pozice: {typ_pozice}")

    #             temp_board = CustomBoard(fen)

    #             if temp_board.is_checkmate():
    #                 print("Stav: Mat")
    #             elif temp_board.is_stalemate():
    #                 print("Stav: Pat")
    #             elif temp_board.is_insufficient_material():
    #                 print("Stav: Nedostatečný materiál")
    #             elif temp_board.is_check():
    #                 print("Stav: Šach")
    #             else:
    #                 print("Stav: Normální pozice")

    #             print_board(fen)

    #             print()

    # Print optimal moves
# Print optimal moves
    current_fen = start_fen
    simplified_current_fen = simplify_fen(current_fen)
    simplified_current_fen1 = simplified_current_fen
    optimal_moves = []

    while True:
        board = CustomBoard(current_fen)
        if board.is_checkmate():
            print("Mat detekován!")
            break

        # Opravená část
        half_move_clock = current_fen.split()[-2]
        if board.is_insufficient_material() or (half_move_clock != '-' and int(half_move_clock) >= 100):
            if board.is_insufficient_material():
                print("Nedostatečný materiál detekován!")
            else:
                print("Remíza pravidlem 50 tahů detekována!")
            AR[simplified_current_fen] = (0, 'drawing')  # Aktualizujeme AR pro tuto pozici
            break

        if simplified_current_fen not in AR:
            print(f"Pozice {simplified_current_fen} není v AR.")
            break

        current_value = AR[simplified_current_fen][0]

        if current_value == 0:
            print("Remíza dosažena!")
            break

        hod = -2000 if current_value > 0 else 2000
        best_fen = None
        for move in board.legal_moves:
            board.push(move)
            POZ2 = board.fen()
            simplified_POZ2 = simplify_fen(POZ2)
            if simplified_POZ2 in AR:
                hod2 = -AR[simplified_POZ2][0]
                if current_value > 0:  # Silnější hráč
                    if hod2 > hod:
                        hod = hod2
                        best_fen = simplified_POZ2
                else:  # Slabší hráč
                    if hod2 < hod:
                        hod = hod2
                        best_fen = simplified_POZ2
            board.pop()

        if best_fen is None:
            print("Žádný další tah nebyl nalezen.")
            break
        optimal_moves.append(best_fen)
        current_fen = best_fen
        simplified_current_fen = simplify_fen(current_fen)


    print("\nOptimální tahy:")
    for fen in reversed(optimal_moves):
        print_board(fen)
        hodnota, typ_pozice = AR[simplify_fen(fen)]
        print(f"Hodnota: {hodnota}, Typ: {typ_pozice}")
        print(fen)
        print("\n")

    print_board(simplified_current_fen1)
    hodnota, typ_pozice = AR[simplified_current_fen1]
    print(f"Hodnota: {hodnota}, Typ: {typ_pozice}")
    print(simplified_current_fen1)
    print("\n")