@tool
extends OptionButton
class_name CustomOptionButton

@export_dir var resourcePath : String
@export var regexPattern : String
@export var reloadOnOpen : bool = false

var selectedValue : String

func _ready() -> void:
	loadData(true)
	item_selected.connect(itemHasBeenSelected)
	pressed.connect(loadData)
	allow_reselect = true

func loadData(force : bool = false) -> void:
	if !force && !reloadOnOpen:
		return

	var regex := RegEx.create_from_string(regexPattern)
	var dir := DirAccess.open(resourcePath)
	clear()
	for file in dir.get_files():
		var fileMatch := regex.search(file)
		if fileMatch:
			add_item(fileMatch.strings[1])
			if selectedValue == fileMatch.strings[1]:
				selected = item_count - 1

	if !selectedValue && item_count > 0:
		selected = 0

func itemHasBeenSelected(index : int) -> void:
	if selectedValue != get_item_text(index):
		selectedValue = get_item_text(index)
		onValueChanged.emit(selectedValue)


func selectItemByName(name : String) -> void:
	for i in item_count:
		if get_item_text(i) == name:
			selected = i
			return


signal onValueChanged(value : String)