extends ScrollContainer

# Scroll direction: 1 = down, -1 = up
var scroll_direction: int = 1

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	scroll_direction = 1

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta: float) -> void:
	var speed_pixels_per_second: float = float(Settings.inspiration_list_speed) * 60.0
	var scroll_amount: float = speed_pixels_per_second * delta * float(scroll_direction)
	
	var scroll_bar = get_v_scroll_bar()
	
	# Don't scroll if list is empty or too short
	if scroll_bar.max_value <= 0:
		return

	var current_pos = scroll_bar.value

	if scroll_direction == 1:
		# Scrolling down
		if current_pos + scroll_bar.page < scroll_bar.max_value:
			scroll_bar.value = min(current_pos + scroll_amount, scroll_bar.max_value - scroll_bar.page)
		else:
			# Reached bottom, reverse direction
			scroll_direction = -1
			scroll_bar.value = scroll_bar.max_value - scroll_bar.page
	else:
		# Scrolling up
		if current_pos > 0:
			scroll_bar.value = max(current_pos + scroll_amount, 0)
		else:
			# Reached top, reverse direction
			scroll_direction = 1
			scroll_bar.value = 0