/***************************************************************************
 *   fheroes2: https://github.com/ihhub/fheroes2                           *
 *   Copyright (C) 2019 - 2025                                             *
 *                                                                         *
 *   Free Heroes2 Engine: http://sourceforge.net/projects/fheroes2         *
 *   Copyright (C) 2009 by Andrey Afletdinov <fheroes2@gmail.com>          *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#pragma once

#include <cstddef>
#include <functional>
#include <string>

#include "spell.h"
#include "spell_storage.h"

class HeroBase;

class SpellBook final : public SpellStorage
{
public:
    enum class Filter : int
    {
        ADVN = 0x01,
        CMBT = 0x02,
        ALL = ADVN | CMBT
    };

    Spell Open( const HeroBase & hero, const Filter displayableSpells, const bool canCastSpell, const bool restorePreviousState,
                const std::function<void( const std::string & )> & statusCallback ) const;

    void Edit( const HeroBase & hero );

    void resetState();

    SpellStorage SetFilter( const Filter filter, const HeroBase * hero = nullptr ) const;

private:
    bool _isFirstPage() const
    {
        return _startSpellIndex == 0;
    }

    bool _isLastPage( const size_t spellsCount, const size_t spellsPerScreen ) const
    {
        return ( _startSpellIndex + spellsPerScreen ) >= spellsCount;
    }

    mutable size_t _startSpellIndex = 0;

    mutable Filter _spellFilter = Filter::ADVN;
};
