/*************************************************************************/
/*  scene_import_settings.h                                              */
/*************************************************************************/
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/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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/*************************************************************************/

#ifndef SCENE_IMPORT_SETTINGS_H
#define SCENE_IMPORT_SETTINGS_H

#include "editor/import/resource_importer_scene.h"
#include "scene/3d/camera_3d.h"
#include "scene/3d/light_3d.h"
#include "scene/3d/mesh_instance_3d.h"
#include "scene/gui/dialogs.h"
#include "scene/gui/item_list.h"
#include "scene/gui/menu_button.h"
#include "scene/gui/option_button.h"
#include "scene/gui/split_container.h"
#include "scene/gui/subviewport_container.h"
#include "scene/gui/tab_container.h"
#include "scene/gui/tree.h"
#include "scene/resources/primitive_meshes.h"

class EditorFileDialog;
class EditorInspector;
class SceneImportSettingsData;

class SceneImportSettings : public ConfirmationDialog {
	GDCLASS(SceneImportSettings, ConfirmationDialog)

	static SceneImportSettings *singleton;

	enum Actions {
		ACTION_EXTRACT_MATERIALS,
		ACTION_CHOOSE_MESH_SAVE_PATHS,
		ACTION_CHOOSE_ANIMATION_SAVE_PATHS,
	};

	Node *scene = nullptr;

	HSplitContainer *tree_split = nullptr;
	HSplitContainer *property_split = nullptr;
	TabContainer *data_mode = nullptr;
	Tree *scene_tree = nullptr;
	Tree *mesh_tree = nullptr;
	Tree *material_tree = nullptr;

	EditorInspector *inspector = nullptr;

	SubViewport *base_viewport = nullptr;

	Camera3D *camera = nullptr;
	bool first_aabb = false;
	AABB contents_aabb;

	DirectionalLight3D *light = nullptr;
	Ref<ArrayMesh> selection_mesh;
	MeshInstance3D *node_selected = nullptr;

	MeshInstance3D *mesh_preview = nullptr;
	Ref<SphereMesh> material_preview;

	Ref<StandardMaterial3D> collider_mat;

	float cam_rot_x = 0.0f;
	float cam_rot_y = 0.0f;
	float cam_zoom = 0.0f;

	void _update_scene();

	struct MaterialData {
		bool has_import_id;
		Ref<Material> material;
		TreeItem *scene_node = nullptr;
		TreeItem *mesh_node = nullptr;
		TreeItem *material_node = nullptr;

		float cam_rot_x = -Math_PI / 4;
		float cam_rot_y = -Math_PI / 4;
		float cam_zoom = 1;

		HashMap<StringName, Variant> settings;
	};
	HashMap<String, MaterialData> material_map;

	struct MeshData {
		bool has_import_id;
		Ref<Mesh> mesh;
		TreeItem *scene_node = nullptr;
		TreeItem *mesh_node = nullptr;

		float cam_rot_x = -Math_PI / 4;
		float cam_rot_y = -Math_PI / 4;
		float cam_zoom = 1;
		HashMap<StringName, Variant> settings;
	};
	HashMap<String, MeshData> mesh_map;

	struct AnimationData {
		Ref<Animation> animation;
		TreeItem *scene_node = nullptr;
		HashMap<StringName, Variant> settings;
	};
	HashMap<String, AnimationData> animation_map;

	struct NodeData {
		Node *node = nullptr;
		TreeItem *scene_node = nullptr;
		HashMap<StringName, Variant> settings;
	};
	HashMap<String, NodeData> node_map;

	void _fill_material(Tree *p_tree, const Ref<Material> &p_material, TreeItem *p_parent);
	void _fill_mesh(Tree *p_tree, const Ref<Mesh> &p_mesh, TreeItem *p_parent);
	void _fill_animation(Tree *p_tree, const Ref<Animation> &p_anim, const String &p_name, TreeItem *p_parent);
	void _fill_scene(Node *p_node, TreeItem *p_parent_item);

	RBSet<Ref<Mesh>> mesh_set;
	RBSet<Ref<Material>> material_set;

	String selected_type;
	String selected_id;

	bool selecting = false;

	void _update_view_gizmos();
	void _update_camera();
	void _select(Tree *p_from, String p_type, String p_id);
	void _material_tree_selected();
	void _mesh_tree_selected();
	void _scene_tree_selected();

	void _viewport_input(const Ref<InputEvent> &p_input);

	HashMap<StringName, Variant> defaults;

	SceneImportSettingsData *scene_import_settings_data = nullptr;

	void _re_import();

	String base_path;

	MenuButton *action_menu = nullptr;

	ConfirmationDialog *external_paths = nullptr;
	Tree *external_path_tree = nullptr;
	EditorFileDialog *save_path = nullptr;
	OptionButton *external_extension_type = nullptr;

	EditorFileDialog *item_save_path = nullptr;

	void _menu_callback(int p_id);
	void _save_dir_callback(const String &p_path);

	int current_action = 0;

	Vector<TreeItem *> save_path_items;

	TreeItem *save_path_item = nullptr;
	void _save_path_changed(const String &p_path);
	void _browse_save_callback(Object *p_item, int p_column, int p_id);
	void _save_dir_confirm();

	Dictionary base_subresource_settings;

	void _load_default_subresource_settings(HashMap<StringName, Variant> &settings, const String &p_type, const String &p_import_id, ResourceImporterScene::InternalImportCategory p_category);

	bool editing_animation = false;

	Timer *update_view_timer;

protected:
	void _notification(int p_what);

public:
	bool is_editing_animation() const { return editing_animation; }
	void update_view();
	void open_settings(const String &p_path, bool p_for_animation = false);
	static SceneImportSettings *get_singleton();
	SceneImportSettings();
	~SceneImportSettings();
};

#endif // SCENE_IMPORT_SETTINGS_H