#ifndef TEXTURE_MERGER_H
#define TEXTURE_MERGER_H

/*************************************************************************/
/*  texture_merger.h                                                     */
/*************************************************************************/
/*                         This file is part of:                         */
/*                          PANDEMONIUM ENGINE                           */
/*             https://github.com/Relintai/pandemonium_engine            */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar.                              */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#include "core/config/engine.h"
#include "core/containers/vector.h"

#include "scene/main/node.h"

#include "texture_packer.h"

class TextureMerger : public Node {
	GDCLASS(TextureMerger, Node);

public:
	bool get_dirty() const;
	void set_dirty(const bool value);

	int get_texture_flags() const;
	void set_texture_flags(const int flags);

	int get_max_atlas_size() const;
	void set_max_atlas_size(const int size);

	bool get_keep_original_atlases() const;
	void set_keep_original_atlases(const bool value);

	Color get_background_color() const;
	void set_background_color(const Color &color);

	int get_margin() const;
	void set_margin(const int margin);

	bool get_automatic_merge() const;
	void set_automatic_merge(const bool value);

	Ref<TexturePacker> get_packer() const;
	void set_packer(const Ref<TexturePacker> &packer);

	Vector<Variant> get_textures();
	void set_textures(const Vector<Variant> &textures);

	Ref<AtlasTexture> add_texture(const Ref<Texture> &texture);
	Ref<AtlasTexture> get_texture(const Ref<Texture> &texture);
	Ref<AtlasTexture> get_texture_index(const int index);
	Ref<Texture> get_original_texture(const int index);
	bool contains_texture(const Ref<Texture> &texture);

	bool unref_texture_index(const int index);
	bool unref_texture(const Ref<Texture> &texture);
	void remove_texture_index(const int index);
	void remove_texture(const Ref<Texture> &texture);

	int get_texture_count();
	void clear();

	Ref<ImageTexture> get_generated_texture(const int index);
	int get_generated_texture_count();

	void merge();

	TextureMerger();
	~TextureMerger();

protected:
	static void _bind_methods();
	void _notification(int p_what);

private:
	bool _automatic_merge;
	bool _dirty;

	Ref<TexturePacker> _packer;
	Vector<Ref<Texture>> _textures;
};

#endif