extends Node


@export var dragon_template: PackedScene


func _ready():
	await get_tree().process_frame
	move_window_to_bottom_right()


func move_window_to_bottom_right():
	var display_index: int = DisplayServer.window_get_current_screen()

	var work_area_position: Vector2i = DisplayServer.screen_get_usable_rect(display_index).position
	var work_area_size: Vector2i     = DisplayServer.screen_get_usable_rect(display_index).size

	var window_size: Vector2i = DisplayServer.window_get_size()

	var new_position: Vector2i = work_area_position + Vector2i(work_area_size.x - window_size.x, work_area_size.y - window_size.y)

	DisplayServer.window_set_position(new_position)


func _unhandled_input(event: InputEvent) -> void:
	if event.is_action_pressed("ui_accept"):
		_instantiate_dragon(Vector2i(0, 0))


func _instantiate_dragon(relative_position: Vector2i) -> void:
	var dragon = dragon_template.instantiate()
	add_child(dragon)
	if dragon is Window:
		var window_position: Vector2i = DisplayServer.window_get_position()
		var window_size: Vector2i = DisplayServer.window_get_size()
		dragon.position = window_position + relative_position
		dragon.main_window_rect = Rect2i(window_position, window_size)
		dragon.show()