#ifndef CHESS_ENGINE_MOVEGENERATOR_HPP
#define CHESS_ENGINE_MOVEGENERATOR_HPP

#include "Piece.hpp"
#include "Square.hpp"
#include "Move.hpp"
#include "CastlingRights.hpp"
#include "BitBoard.hpp"
#include "BoardState.hpp"

#include <optional>
#include <iosfwd>
#include <vector>
#include <memory>

class MoveGenerator {
public:
    using MoveVec = std::vector<Move>;

    static void generatePawnMoves(const BoardState &bs, const Square &from, MoveVec &moves);
    static void generateBishopMoves(const BoardState &bs, const Square &from, MoveVec &moves);
    static void generateKingMoves(const BoardState &bs, const Square &from, MoveVec &moves);
    static void generateRookMoves(const BoardState &bs, const Square &from, MoveVec &moves);
    static void generateQueenMoves(const BoardState &bs, const Square &from, MoveVec &moves);
    static void generateKnightMoves(const BoardState &bs, const Square &from, MoveVec &moves);
    static BitBoard generateAttackedSquares(const BoardState &bs, BitBoard target, PieceColor opColor);

    static unsigned int Mobility(const BoardState &bs, PieceColor color);

private:
    static void generatePawnMoves(const BoardState &bs, const Square &from, BitBoard targets, MoveVec &moves);

    static void generateMoves(const BoardState &bs, const Square &from, BitBoard movesBB, PieceType pt, MoveVec &moves);
    static void generateMovesWithPromotion(const BoardState &bs, const Square &from, BitBoard movesBB, MoveVec &moves);

    inline static bool isCheck(const BoardState &bs, const BitBoard &fromBB, const BitBoard &toBB);
    inline static unsigned score(const BoardState &bs, const BitBoard &toBB, PieceType moved);
};

#endif //CHESS_ENGINE_MOVEGENERATOR_HPP