/**************************************************************************/
/*  gltf_state.h                                                          */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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/**************************************************************************/

#ifndef GLTF_STATE_H
#define GLTF_STATE_H

#include "extensions/gltf_light.h"
#include "gltf_template_convert.h"
#include "structures/gltf_accessor.h"
#include "structures/gltf_animation.h"
#include "structures/gltf_buffer_view.h"
#include "structures/gltf_camera.h"
#include "structures/gltf_mesh.h"
#include "structures/gltf_node.h"
#include "structures/gltf_skeleton.h"
#include "structures/gltf_skin.h"
#include "structures/gltf_texture.h"
#include "structures/gltf_texture_sampler.h"

class GLTFState : public Resource {
	GDCLASS(GLTFState, Resource);
	friend class GLTFDocument;
	friend class PackedSceneGLTF;

	String filename;
	Dictionary json;
	int major_version = 0;
	int minor_version = 0;
	Vector<uint8_t> glb_data;

	bool use_named_skin_binds = false;
	bool use_khr_texture_transform = false;
	bool use_legacy_names = false;
	uint32_t compress_flags = 0;
	bool create_animations = true;

	Vector<Ref<GLTFNode>> nodes;
	Vector<Vector<uint8_t>> buffers;
	Vector<Ref<GLTFBufferView>> buffer_views;
	Vector<Ref<GLTFAccessor>> accessors;

	Vector<Ref<GLTFMesh>> meshes; // meshes are loaded directly, no reason not to.

	Vector<AnimationPlayer *> animation_players;
	Map<Ref<Material>, GLTFMaterialIndex> material_cache;
	Vector<Ref<Material>> materials;

	String scene_name;
	Vector<int> root_nodes;
	Vector<Ref<GLTFTexture>> textures;
	Vector<Ref<GLTFTextureSampler>> texture_samplers;
	Ref<GLTFTextureSampler> default_texture_sampler;
	Vector<Ref<Image>> images;
	Map<GLTFImageIndex, String> external_images_paths;
	Map<GLTFTextureIndex, Ref<Texture>> texture_cache;
	Vector<String> extensions_used;
	Vector<String> extensions_required;

	Vector<Ref<GLTFSkin>> skins;
	Vector<Ref<GLTFCamera>> cameras;
	Vector<Ref<GLTFLight>> lights;
	Set<String> unique_names;
	Set<String> unique_animation_names;

	Vector<Ref<GLTFSkeleton>> skeletons;
	Map<GLTFSkeletonIndex, GLTFNodeIndex> skeleton_to_node;
	Vector<Ref<GLTFAnimation>> animations;
	Map<GLTFNodeIndex, Node *> scene_nodes;

	Map<ObjectID, GLTFSkeletonIndex> skeleton3d_to_gltf_skeleton;
	Map<ObjectID, Map<ObjectID, GLTFSkinIndex>> skin_and_skeleton3d_to_gltf_skin;
	Dictionary additional_data;

protected:
	static void _bind_methods();

public:
	void add_used_extension(const String &p_extension, bool p_required = false);

	Dictionary get_json();
	void set_json(Dictionary p_json);

	int get_major_version();
	void set_major_version(int p_major_version);

	int get_minor_version();
	void set_minor_version(int p_minor_version);

	Vector<uint8_t> get_glb_data();
	void set_glb_data(Vector<uint8_t> p_glb_data);

	bool get_use_named_skin_binds();
	void set_use_named_skin_binds(bool p_use_named_skin_binds);

	Array get_nodes();
	void set_nodes(Array p_nodes);

	Array get_buffers();
	void set_buffers(Array p_buffers);

	Array get_buffer_views();
	void set_buffer_views(Array p_buffer_views);

	Array get_accessors();
	void set_accessors(Array p_accessors);

	Array get_meshes();
	void set_meshes(Array p_meshes);

	Array get_materials();
	void set_materials(Array p_materials);

	String get_scene_name();
	void set_scene_name(String p_scene_name);

	Array get_root_nodes();
	void set_root_nodes(Array p_root_nodes);

	Array get_textures();
	void set_textures(Array p_textures);

	Array get_texture_samplers();
	void set_texture_samplers(Array p_texture_samplers);

	Array get_images();
	void set_images(Array p_images);

	Array get_skins();
	void set_skins(Array p_skins);

	Array get_cameras();
	void set_cameras(Array p_cameras);

	Array get_lights();
	void set_lights(Array p_lights);

	Array get_unique_names();
	void set_unique_names(Array p_unique_names);

	Array get_unique_animation_names();
	void set_unique_animation_names(Array p_unique_names);

	Array get_skeletons();
	void set_skeletons(Array p_skeletons);

	Dictionary get_skeleton_to_node();
	void set_skeleton_to_node(Dictionary p_skeleton_to_node);

	bool get_create_animations();
	void set_create_animations(bool p_create_animations);

	Array get_animations();
	void set_animations(Array p_animations);

	Node *get_scene_node(GLTFNodeIndex idx);

	int get_animation_players_count(int idx);

	AnimationPlayer *get_animation_player(int idx);

	Variant get_additional_data(const String &p_extension_name);
	void set_additional_data(const String &p_extension_name, Variant p_additional_data);
};

#endif // GLTF_STATE_H