/* Book.hpp
 *
 * Kubo Ryosuke
 */

#ifndef SUNFISH_BOOK_BOOK_HPP__
#define SUNFISH_BOOK_BOOK_HPP__

#include "../common/Def.hpp"
#include "../core/move/Move.hpp"
#include <unordered_map>
#include <vector>
#include <string>
#include <iostream>

namespace sunfish {

class Position;

struct BookMove {
  Move     move;  // 32 bits
  uint16_t count; // 16 bits
};

using BookMoves = std::vector<BookMove>;

class Book {
public:
	
	using BookMap = std::unordered_map<std::string, BookMoves>;
	
public:
	
	void insert(const Position& position, Move move) {
		insert(position, move, 1);
	}
	
	void insert(const Position& position, Move move, int count);
	
	void sort();
	
	const BookMoves* get(const Position& position) const;
	
	void clear() {
		map_.clear();
	}
	
	bool load();
	
	bool save() const;
	
	bool save(std::ostream& os) const;
	
private:
	
	BookMap map_;
	
};
	
} // namespace sunfish

#endif // SUNFISH_BOOK_BOOK_HPP__