/*************************************************************************/
/*  editor_command_palette.h                                             */
/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
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#ifndef EDITOR_COMMAND_PALETTE_H
#define EDITOR_COMMAND_PALETTE_H

#include "core/input/shortcut.h"
#include "core/os/thread_safe.h"
#include "scene/gui/dialogs.h"
#include "scene/gui/tree.h"

class EditorCommandPalette : public ConfirmationDialog {
	GDCLASS(EditorCommandPalette, ConfirmationDialog);

	static EditorCommandPalette *singleton;
	LineEdit *command_search_box = nullptr;
	Tree *search_options = nullptr;

	struct Command {
		Callable callable;
		String name;
		String shortcut;
		int last_used = 0; // Store time as int, because doubles have problems with text serialization.
	};

	struct CommandEntry {
		String key_name;
		String display_name;
		String shortcut_text;
		int last_used = 0;
		float score = 0;
	};

	struct CommandEntryComparator {
		_FORCE_INLINE_ bool operator()(const CommandEntry &A, const CommandEntry &B) const {
			return A.score > B.score;
		}
	};

	struct CommandHistoryComparator {
		_FORCE_INLINE_ bool operator()(const CommandEntry &A, const CommandEntry &B) const {
			if (A.last_used == B.last_used) {
				return A.display_name < B.display_name;
			} else {
				return A.last_used > B.last_used;
			}
		}
	};

	HashMap<String, Command> commands;
	HashMap<String, Pair<String, Ref<Shortcut>>> unregistered_shortcuts;

	List<String> command_keys;

	void _update_command_search(const String &search_text);
	float _score_path(const String &p_search, const String &p_path);
	void _sbox_input(const Ref<InputEvent> &p_ie);
	void _confirmed();
	void _update_command_keys();
	void _add_command(String p_command_name, String p_key_name, Callable p_binded_action, String p_shortcut_text = "None");
	void _theme_changed();
	void _save_history() const;
	EditorCommandPalette();

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

public:
	void open_popup();
	void get_actions_list(List<String> *p_list) const;
	void add_command(String p_command_name, String p_key_name, Callable p_action, Vector<Variant> arguments, String p_shortcut_text = "None");
	void execute_command(String &p_command_name);
	void register_shortcuts_as_command();
	Ref<Shortcut> add_shortcut_command(const String &p_command, const String &p_key, Ref<Shortcut> p_shortcut);
	void remove_command(String p_key_name);
	static EditorCommandPalette *get_singleton();
};

Ref<Shortcut> ED_SHORTCUT_AND_COMMAND(const String &p_path, const String &p_name, Key p_keycode = Key::NONE, String p_command = "");

#endif // EDITOR_COMMAND_PALETTE_H