/*
    PIP - Platform Independent Primitives
    Resources subsystem
    Ivan Pelipenko peri4ko@yandex.ru

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

//! \~english Resources storage subsystem
//! \~russian Подсистема хранения ресурсов
//! \defgroup Resources Resources
//! \~\brief
//! \~english Resources storage subsystem
//! \~russian Подсистема хранения ресурсов

#ifndef PIRESOURCES_P_H
#define PIRESOURCES_P_H

#include "pichunkstream.h"
#include "pimap.h"
#include "pistring.h"

class PIResources;

//! \~english Storage for compiled-in resources
//! \~russian Хранилище вкомпиленных ресурсов
class PIP_EXPORT PIResourcesStorage {
	friend class PIResources;

public:
	//! \~english Get singleton instance
	//! \~russian Получить синглтон
	static PIResourcesStorage * instance();

	//! \~english Section containing resource entries
	//! \~russian Секция, содержащая записи ресурсов
	struct PIP_EXPORT Section {
		//! \~english Constructor
		//! \~russian Конструктор
		Section();
		//! \~english Destructor
		//! \~russian Деструктор
		~Section();

		//! \~english Add another section to this one
		//! \~russian Добавить другую секцию к этой
		void add(const Section & s);

		//! \~english Clear all entries
		//! \~russian Очистить все записи
		void purge();

		//! \~english Map of resource names to data
		//! \~russian Карта имен ресурсов к данным
		PIMap<PIString, PIByteArray *> entries;
	};

	//! \~english Resource entry constructor
	//! \~russian Конструктор записи ресурса
	struct PIP_EXPORT __RCEntry {
		__RCEntry(const PIString & s = PIString(),
		          const PIString & n = PIString(),
		          const PIString & a = PIString(),
		          const PIString & f = PIString(),
		          llong o            = 0,
		          llong si           = 0,
		          int fl             = 0) {
			section = s;
			name    = n;
			alias   = a;
			file    = f;
			offset  = o;
			size    = si;
			flags   = fl;
		}

		//! \~english Section name
		//! \~russian Имя секции
		PIString section;

		//! \~english Resource name
		//! \~russian Имя ресурса
		PIString name;

		//! \~english Alias
		//! \~russian Псевдоним
		PIString alias;

		//! \~english Source file
		//! \~russian Исходный файл
		PIString file;

		//! \~english Offset in file
		//! \~russian Смещение в файле
		llong offset;

		//! \~english Size
		//! \~russian Размер
		llong size;

		//! \~english Flags
		//! \~russian Флаги
		int flags;
	};

	//! \~english Register a section with data
	//! \~russian Зарегистрировать секцию с данными
	//! \param section_name Name of the section
	//! \param data Section data
	void registerSection(const PIString & section_name, const Section & data);

	//! \~english Register from raw data
	//! \~russian Зарегистрировать из сырых данных
	//! \param rc_data Resource data
	//! \param rc_desc Resource description
	//! \param rc_desc_size Description size
	void registerSection(const uchar * rc_data, const uchar * rc_desc, int rc_desc_size);

	//! \~english Get section by name
	//! \~russian Получить секцию по имени
	//! \param section_name Name of section
	//! \return Pointer to section or nullptr
	Section * section(const PIString & section_name) const;

	//! \~english Get resource by section and name
	//! \~russian Получить ресурс по секции и имени
	PIByteArray get(const PIString & section_name, const PIString & entry_name) const;

	//! \~english Get resource by name (searches all sections)
	//! \~russian Получить ресурс по имени (ищет во всех секциях)
	PIByteArray get(const PIString & entry_name) const;

	//! \~english Clear all sections
	//! \~russian Очистить все секции
	void clear();

private:
	PIResourcesStorage();
	~PIResourcesStorage();

	PIMap<PIString, Section *> sections;
};


BINARY_STREAM_WRITE(PIResourcesStorage::__RCEntry) {
	PIChunkStream cs;
	cs.add(1, v.section).add(2, v.name).add(3, v.file).add(4, v.size).add(5, v.offset).add(6, v.flags).add(7, v.alias);
	s << cs.data();
	return s;
}
BINARY_STREAM_READ(PIResourcesStorage::__RCEntry) {
	PIByteArray ba;
	s >> ba;
	PIChunkStream cs(ba);
	while (!cs.atEnd()) {
		switch (cs.read()) {
		case 1: cs.get(v.section); break;
		case 2: cs.get(v.name); break;
		case 3: cs.get(v.file); break;
		case 4: cs.get(v.size); break;
		case 5: cs.get(v.offset); break;
		case 6: cs.get(v.flags); break;
		case 7: cs.get(v.alias); break;
		}
	}
	return s;
}


#endif // PIRESOURCES_H