質問編集履歴
1
Order・OrderDomainService・Coupons・ProductCoupon・CouponInterfaceを追記しました。
test
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File without changes
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test
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@@ -21,7 +21,7 @@
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・OrderDetailクラスは商品情報を持った注文詳細クラス（各注文商品の金額を持つ）
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・CouponクラスはCouponInterfaceを使用することで、様々な仕様のクーポン機能が可能
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-
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+
Orderクラス
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```php
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<?php
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namespace App\Beer;
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@@ -32,7 +32,7 @@
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private ?int $id;
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-
private int $
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private int $price;
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private Customer $customer;
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@@ -44,38 +44,67 @@
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public function __construct(
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?int $id,
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int $
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int $price,
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Customer $customer,
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OrderDetails $orderDetails,
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Coupons $coupons,
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DeliveryFee $deliveryFee,
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) {
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$this->id = $id;
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$this->
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$this->price = $price;
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$this->customer = $customer;
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$this->orderDetails = $orderDetails;
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$this->coupons = $coupons;
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$this->deliveryFee = $deliveryFee;
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}
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public function getId(): ?int {
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return $this->id;
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}
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public function getPrice():int {
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return $this->price;
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}
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public function getTotalPrice():int {
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return $this->price + $this->getDeliveryFee()->getValue();
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}
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public function getCustomer():Customer {
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return $this->customer;
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}
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public function getOrderDetails(): OrderDetails {
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return $this->orderDetails;
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}
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public function getCoupons():Coupons {
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return $this->coupons;
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}
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public function getDeliveryFee():DeliveryFee {
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return $this->deliveryFee;
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}
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public function addCoupon(CouponInterface $coupon) {
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$this->coupons = $this->coupons->addCoupon($coupon);
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}
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public function addOrderDetail(OrderDetail $orderDetail) {
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$this->orderDetails->addOrderDetail($orderDetail);
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}
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public function
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public function hasProduct(Product $product):bool {
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return $this->
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return $this->orderDetails->hasProduct($product);
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}
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}
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public function getOrderDetails(): OrderDetails {
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return $this->orderDetails;
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}
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}
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```
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```
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-
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OrderDomainService
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```php
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<?php
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namespace App\Beer\DomainService;
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use App\Beer\Coupons;
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use App\Beer\Order;
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use App\Beer\Interface\CouponInterface;
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@@ -87,14 +116,184 @@
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}
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public function couponIsApplicable(Order $order, CouponInterface $coupon):bool {
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// TODO:: すでに適用されているクーポンとの状況も確認する必要がある
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return $coupon->isApplicable($order);
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}
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public function a
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public function applyCoupon(Order $order, CouponInterface $coupon): Order {
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$order->addCoupon($coupon);
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$appliedOrder = $this->calculateCouponsOrder($order);
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return $appliedOrder;
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}
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private function calculateCouponsOrder(Order $order):Order {
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$orders = [];
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$coupons = $order->getCoupons()->asArray();
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$combinations = $this->permutation($coupons);
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// クーポンの適用順で最も最小金額になる組み合わせを探す
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foreach ($combinations as $coupons) {
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$couponCollection = new Coupons($coupons);
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$appliedOrder = $couponCollection->apply($order);
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$orders[] = $appliedOrder;
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}
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// 最小注文金額のOrderを返す
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$minTotalPriceOrder = $this->getMinTotalPriceOrder($orders);
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return $minTotalPriceOrder;
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}
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private function getMinTotalPriceOrder(Array $orders):Order {
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$totalPrices = [];
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foreach($orders as $order) {
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$totalPrices[] = $order->getTotalPrice();
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}
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$minTotalPriceIndex = array_keys($totalPrices, min($totalPrices))[0];
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return $orders[$minTotalPriceIndex];
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}
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// 本来は渡された配列の順列を返す
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private function permutation(array $arr): array {
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return [
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[$arr[0],$arr[1]],
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[$arr[1],$arr[0]],
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];
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}
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}
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```
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Couponsクラス
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```php
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<?php
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namespace App\Beer;
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use App\Beer\Interface\CouponInterface;
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class Coupons {
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private Array $coupons;
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public function __construct(
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Array $coupons,
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) {
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$this->coupons = $coupons;
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}
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public function asArray():Array {
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return $this->coupons;
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}
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public function addCoupon(CouponInterface $coupon):self {
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$this->coupons[] = $coupon;
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return new Coupons($this->coupons);
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}
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public function apply(Order $order): Order {
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foreach($this->coupons as $coupon) {
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$
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$order = $coupon->apply($order);
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}
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return $order;
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}
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}
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```
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ProductCouponクラス
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```php
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<?php
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namespace App\Beer;
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use App\Beer\Enums\CouponTarget;
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use App\Beer\Enums\DiscountType;
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use App\Beer\Interface\CouponInterface;
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class ProductCoupon implements CouponInterface {
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private String $couponCode;
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private int $specificPrice;
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private Product $product;
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public function __construct(
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String $couponCode,
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int $specificPrice,
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Product $product
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) {
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$this->couponCode = $couponCode;
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$this->specificPrice = $specificPrice;
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$this->product = $product;
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}
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public function isApplicable(Order $order): bool {
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return $order->hasProduct($this->product);
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}
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public function apply(Order $order):Order {
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$appliedOrderDetails = [];
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foreach($order->getOrderDetails()->asArray() as $orderDetail) {
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if ($orderDetail->getProduct()->getProductCode() == $this->product->getProductCode()) {
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$appliedOrderDetail = new OrderDetail(
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$orderDetail->getId(),
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$this->specificPrice,
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$this->product,
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);
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$appliedOrderDetails[] = $appliedOrderDetail;
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} else {
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$appliedOrderDetails[] = $orderDetail;
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}
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}
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$orderDetails = new OrderDetails($appliedOrderDetails);
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$appliedOrder = new Order(
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$order->getId(),
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$orderDetails->getTotalPrice(),
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$order->getCustomer(),
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$orderDetails,
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$order->getCoupons(),
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$order->getDeliveryFee(),
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);
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return $appliedOrder;
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}
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public function getCouponTarget(CouponTarget $couponTarget): CouponTarget
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{
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return CouponTarget::PRODUCT_CODE;
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}
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public function getDiscountType(DiscountType $discountType): DiscountType
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{
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return DiscountType::SPECIFIC_PRICE;
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}
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}
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```
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CouponInterface
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```php
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<?php
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namespace App\Beer\Interface;
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use App\Beer\Enums\CouponTarget;
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use App\Beer\Enums\DiscountType;
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use App\Beer\Order;
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287
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interface CouponInterface {
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public function isApplicable(Order $order): bool;
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public function apply(Order $order):Order;
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public function getCouponTarget(CouponTarget $couponTarget):CouponTarget;
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public function getDiscountType(DiscountType $discountType):DiscountType;
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}
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```
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299
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