const suits = ["heart", "diamond", "spade", "club"] as const;
export type Suit = (typeof suits)[number];

const ranks = [
	2,
	3,
	4,
	5,
	6,
	7,
	8,
	9,
	10,
	"jack",
	"queen",
	"king",
	"ace",
] as const;
export type Rank = (typeof ranks)[number];

export type Card =
	| {
			kind: "normal";
			suit: Suit;
			rank: Rank;
	  }
	| { kind: "joker"; color: "red" | "black" };

export type vCard = Card | null | number;
export type Pile<C extends vCard = Card> = C[];
export type Stack<C extends vCard = Card> = C[];
export type Hand<C extends vCard = Card> = C[];
export type Board<C extends vCard = Card> = C[];

export const newDeck = (withJokers = false): Pile =>
	suits
		.map((suit) =>
			ranks.map((rank) => ({ kind: "normal", suit, rank } as Card))
		)
		.flat()
		.concat(
			withJokers
				? [
						{ kind: "joker", color: "red" },
						{ kind: "joker", color: "black" },
				  ]
				: []
		);

export const shuffle = (cards: Card[]) => {
	let i = cards.length;
	while (i > 0) {
		const j = Math.floor(Math.random() * i);
		i--;
		[cards[i], cards[j]] = [cards[j], cards[i]];
	}
	return cards;
};