/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#pragma once

#include "common/array.h"
#include "common/file.h"
#include "common/fs.h"
#include "common/str.h"
#include "common/substream.h"
#include "common/debug.h"

namespace Cryo {

template<typename T>
class CryoArray {
private:
	byte *_data;
	bool _ownData;
	uint16 ElementOffset(int num) {
		assert(_data && num < Count())
		return (static_cast<uint16 *>_data)[num];
	}
public:
	CryoArray(void *data, bool ownData) : _data(data), _ownData(ownData) {
	}
	~CryoArray() {
		if (_ownData)
			delete data;
	}
	uint16 Count() {
		return ElementOffset(0) / 2;
	}
	const T *operator[](int index) {
		return static_cast<T *>(_data + ElementOffset(num));
	}
};

class ResourceManager {
private:
	struct DatFileEntry {
		char _name[16];
		unsigned int _size;
		unsigned int _offset;
		byte _flag;
	};

	Common::Array<DatFileEntry> _files;
	Common::File _datFile;

	static void *StreamToBuffer(Common::SeekableReadStream *stream, unsigned int *size);

public:
	ResourceManager(const Common::String &datFileName);
	ResourceManager();
	~ResourceManager();

	bool LoadDatFile(const Common::String &datFileName);

	// Load resource as a seekable stream
	Common::SeekableReadStream *GetFile(const Common::String &resName, unsigned int hintIndex = 0);
	Common::SeekableReadStream *GetFile(unsigned int resIndex);

	// Load resource as a buffer
	void *GetData(const Common::String &resName, unsigned int *size = nullptr);
	void *GetData(int resIndex, unsigned int *size = nullptr);
	void *operator[](int resIndex) {
		return GetData(resIndex);
	}

};

}