extends Node

@onready var fullscreen: bool = ProjectSettings.get_setting("display/window/size/mode") == Window.MODE_EXCLUSIVE_FULLSCREEN | Window.MODE_FULLSCREEN

func _process(_delta: float) -> void:
	if Input.is_action_just_pressed("fullscreen"):
		fullscreen = !fullscreen
		toggle_fullscreen()

func _notification(what: int) -> void:
	if what == Window.NOTIFICATION_APPLICATION_FOCUS_OUT:
		Input.mouse_mode = Input.MOUSE_MODE_VISIBLE

func _unhandled_input(event: InputEvent) -> void:
	if event is InputEventMouse:
		Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
	elif !event.is_action("escape"):
		Input.mouse_mode = Input.MOUSE_MODE_HIDDEN

func toggle_fullscreen() -> void:
	if fullscreen:
		if OS.get_name() == "Windows":
			DisplayServer.window_set_mode(DisplayServer.WINDOW_MODE_EXCLUSIVE_FULLSCREEN)
		else:
			DisplayServer.window_set_mode(DisplayServer.WINDOW_MODE_FULLSCREEN)
	else:
		DisplayServer.window_set_mode(DisplayServer.WINDOW_MODE_WINDOWED)