class_name DeckHolder
## @experimental
## A static class holding references to all decks opened in the current session.

## List of decks opened this session.
static var decks: Array[Deck]


## Returns a new empty deck and assigns a new random ID to it.
static func add_empty_deck() -> Deck:
	var deck := Deck.new()
	DeckHolder.decks.append(deck)
	var uuid := UUID.v4()
	deck.id = uuid
	return deck


## Opens a deck from the [param path].
static func open_deck_from_file(path: String) -> Deck:
	var f := FileAccess.open(path, FileAccess.READ)
	if f.get_error() != OK:
		return null

	var deck := Deck.from_dict(JSON.parse_string(f.get_as_text()), path)
	DeckHolder.decks.append(deck)

	return deck


## Unloads a deck.
static func close_deck(deck: Deck) -> void:
	DeckHolder.decks.erase(deck)