OrderItemFixedAmountOff.php in Commerce Currency Resolver 8

Namespace

Drupal\commerce_currency_resolver\Plugin\Commerce\PromotionOffer

File

src/Plugin/Commerce/PromotionOffer/OrderItemFixedAmountOff.php

<?php

namespace Drupal\commerce_currency_resolver\Plugin\Commerce\PromotionOffer;

use Drupal\commerce_currency_resolver\Plugin\Commerce\CommerceCurrencyResolverAmountTrait;
use Drupal\commerce_promotion\Plugin\Commerce\PromotionOffer\OrderItemFixedAmountOff as CommerceOrderItemFixedAmountOff;
use Drupal\commerce_order\Adjustment;
use Drupal\commerce_promotion\Entity\PromotionInterface;
use Drupal\Core\Entity\EntityInterface;

/**
 * Provides the percentage off offer for order items with multicurrency support.
 *
 * @see \Drupal\commerce_promotion\Plugin\Commerce\PromotionOffer\OrderItemFixedAmountOff
 */
class OrderItemFixedAmountOff extends CommerceOrderItemFixedAmountOff {
  use CommerceCurrencyResolverAmountTrait;

  /**
   * {@inheritdoc}
   */
  public function apply(EntityInterface $entity, PromotionInterface $promotion) {

    // Nothing to do. Go to parent.
    if (!$this
      ->shouldCurrencyRefresh($this
      ->getAmount()
      ->getCurrencyCode())) {
      return parent::apply($entity, $promotion);
    }
    $this
      ->assertEntity($entity);

    /** @var \Drupal\commerce_order\Entity\OrderItemInterface $order_item */
    $order_item = $entity;
    $total_price = $order_item
      ->getTotalPrice();

    // Convert prices.
    $amount = $this
      ->getPrice($this
      ->getAmount());
    if ($this->configuration['display_inclusive']) {

      // Display-inclusive promotions must first be applied to the unit price.
      $unit_price = $order_item
        ->getUnitPrice();
      if ($amount
        ->greaterThan($unit_price)) {

        // Don't reduce the unit price past zero.
        $amount = $unit_price;
      }
      $new_unit_price = $unit_price
        ->subtract($amount);
      $order_item
        ->setUnitPrice($new_unit_price);
      $adjustment_amount = $amount
        ->multiply($order_item
        ->getQuantity());
      $adjustment_amount = $this->rounder
        ->round($adjustment_amount);
    }
    else {
      $adjustment_amount = $amount
        ->multiply($order_item
        ->getQuantity());
      $adjustment_amount = $this->rounder
        ->round($adjustment_amount);
      if ($adjustment_amount
        ->greaterThan($total_price)) {

        // Don't reduce the order item total price past zero.
        $adjustment_amount = $total_price;
      }
    }
    $order_item
      ->addAdjustment(new Adjustment([
      'type' => 'promotion',
      'label' => $promotion
        ->getDisplayName() ?: $this
        ->t('Discount'),
      'amount' => $adjustment_amount
        ->multiply('-1'),
      'source_id' => $promotion
        ->id(),
      'included' => $this->configuration['display_inclusive'],
    ]));
  }

}

Classes

Name	Description
OrderItemFixedAmountOff	Provides the percentage off offer for order items with multicurrency support.