一副纸牌

我最近一直在与 verbs 和 livewire 合作，并认为尝试创建一些我喜欢玩的纸牌游戏是一个有趣的实验。

为了促进这一点，我需要定义一副卡片，我可以在之后从事的任何项目中使用它。

一副牌需要包含 card、deck 和 cardcollection 类。一张牌应有花色和数值，一副牌应由 52 张牌组成。因为花色和数值都是为一副牌定义的，所以我可以使用枚举来表示牌的属性。

cardcollection 类允许我以 verbs 状态安全地存储卡片集合。

<?php // cards/enums/suit.php

declare(strict_types=1);

namespace cards\enums;

enum suit: string
{
    case clubs = 'clubs';
    case diamonds = 'diamonds';
    case hearts = 'hearts';
    case spades = 'spades';
}

<?php // cards/enums/value.php

declare(strict_types=1);

namespace cards\enums;

enum value: string
{
    case two = 'two';
    case three = 'three';
    case four = 'four';
    case five = 'five';
    case six = 'six';
    case seven = 'seven';
    case eight = 'eight';
    case nine = 'nine';
    case ten = 'ten';
    case jack = 'jack';
    case queen = 'queen';
    case king = 'king';
    case ace = 'ace';
}

<?php // cards/card.php

declare(strict_types=1);

namespace cards;

use cards\enums\suit;
use cards\enums\value;

final readonly class card
{
    public function __construct(
        public suit $suit,
        public value $value,
    ) {}
}

<?php // cards/cardcollection.php

declare(strict_types=1);

namespace cards;

use illuminate\support\collection;
use symfony\component\serializer\normalizer\denormalizerinterface;
use symfony\component\serializer\normalizer\normalizerinterface;
use thunk\verbs\serializedbyverbs;

class cardcollection extends collection implements serializedbyverbs
{
    public static function deserializeforverbs(mixed $data, denormalizerinterface $denormalizer): static
    {
        return static::make($data)
            ->map(fn($serialized) => card::deserializeforverbs($serialized, $denormalizer));
    }

    public function serializeforverbs(normalizerinterface $normalizer): string|array
    {
        return $this->map(fn(card $card) => $card->serializeforverbs($normalizer))->tojson();
    }
}

<?php // Cards/Deck.php

declare(strict_types=1);

namespace Cards;

use Cards\Enums\Suit;
use Cards\Enums\Value;

final class Deck
{
    public CardCollection $cards;

    public function __construct()
    {
        $this->cards = CardCollection::make([]);

        collect(CardSuit::cases())
            ->each(function (CardSuit $suit): void {
                collect(CardValue::cases())
                    ->each(function (CardValue $value) use ($suit): void {
                        $this->cards->push(new Card($suit, $value));
                    });
            });

        $this->shuffle();
    }

    public function shuffle(): void
    {
        $this->cards = $this->cards
            ->shuffle()
            ->reverse();
    }

    public function deal(): ?Card
    {
        if (0 === $this->cards->count()) {
            return null;
        }

        return $this->cards->pop();
    }

    public function remainingCards(): int
    {
        return $this->cards->count();
    }
}

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