extends VBoxContainer

@onready var color_pickers: Array[TrainColorPicker] = [$%ColorPicker1, $%ColorPicker2, $%ColorPicker3, $%ColorPicker4, $%ColorPicker5, $%ColorPicker6]
@onready var left_arrow: ArrowButton = $%ArrowButtonLeft
@onready var right_arrow: ArrowButton = $%ArrowButtonRight
var selected_color: Color
var selected_color_index: int = 0

func _ready() -> void:
	for color_picker in color_pickers:
		color_picker.on_color_selected.connect(_on_color_selected)
		color_picker.deselect()
	
	selected_color = color_pickers[0].color
	color_pickers[0].select()

	left_arrow.on_pressed.connect(_select_prev_color)
	right_arrow.on_pressed.connect(_select_next_color)

func _on_color_selected(selected_color_picker: TrainColorPicker) -> void:
	for i in range(color_pickers.size()):
		if color_pickers[i].color == selected_color_picker.color:
			selected_color_picker.select()
			selected_color_index = i
		else:
			color_pickers[i].deselect()

func _select_prev_color() -> void:
	for color_picker in color_pickers:
		color_picker.deselect()
	selected_color_index = (selected_color_index - 1 + color_pickers.size()) % color_pickers.size()
	color_pickers[selected_color_index].select()

func _select_next_color() -> void:
	for color_picker in color_pickers:
		color_picker.deselect()
	selected_color_index = (selected_color_index + 1) % color_pickers.size()
	color_pickers[selected_color_index].select()