cc-indentation-after.php

<?php

class DiscountApplier
{
    private DiscountCalculator $calculator;
    
    public function __construct(DiscountCalculator $calculator)
    {
        $this->calculator = $calculator;
    }
    
    public function apply(Basket $basket): void
    {
        if (!$basket->hasItems()) {
            return;
        }
    
        $discount = 0.0;
        
        foreach ($this->getDiscountableItems($basket) as $basketItem) {
            $discount += $this->calculator->getDiscount($basketItem);
        }
    
        $basket->applyDiscount($discount);
    }
    
    /**
     * @return iterable<BasketItem>
     */
    private function getDiscountableItems(Basket $basket): iterable
    {   
        foreach ($basket->getItems() as $basketItem) {
            if (!$basketItem->isTaxable() || $basketItem->getPrice() === 0) {
                continue;
            }
            
            yield $basketItem;
        }
    }
}