Issue #3501302: Support non-USD currencies in the "Change price in cart" action

Closes #3501302

src/Plugin/Action/ChangePriceInCartAction.php

@@ -8,6 +8,7 @@ use Drupal\Core\Session\AccountInterface;
 use Drupal\commerce_order\Entity\OrderItemInterface;
 use Drupal\commerce_price\Price;
 use Drupal\eca\Plugin\Action\ConfigurableActionBase;
+use Drupal\eca\Plugin\ECA\PluginFormTrait;
 
 /**
  * Describes the eca_commerce change_price_in_cart action.
@@ -23,6 +24,9 @@ use Drupal\eca\Plugin\Action\ConfigurableActionBase;
  */
 class ChangePriceInCartAction extends ConfigurableActionBase {
 
+  use CurrencyActionTrait;
+  use PluginFormTrait;
+
   /**
    * {@inheritdoc}
    */
@@ -40,7 +44,13 @@ class ChangePriceInCartAction extends ConfigurableActionBase {
       $newPrice = $this->tokenService->replace($this->configuration['final_price']);
       $newPrice = str_replace('$', '', $newPrice);
 
-      $newPrice = new Price($newPrice, 'USD');
+      $fallback_currency = $this->getFallbackCurrency($entity);
+      $currency = $this->configuration['currency'] ?: $fallback_currency;
+      if ($currency === '_eca_token') {
+        $currency = $this->getTokenValue('currency', $fallback_currency);
+      }
+
+      $newPrice = new Price($newPrice, $currency);
       $entity->setUnitPrice($newPrice, TRUE);
       $entity->save();
     }
@@ -52,6 +62,7 @@ class ChangePriceInCartAction extends ConfigurableActionBase {
   public function defaultConfiguration(): array {
     return [
       'final_price' => '',
+      'currency' => '',
     ] + parent::defaultConfiguration();
   }
 
@@ -65,6 +76,15 @@ class ChangePriceInCartAction extends ConfigurableActionBase {
       '#title' => $this->t('Final Price'),
       '#default_value' => $this->configuration['final_price'],
     ];
+    $form['currency'] = [
+      '#type' => 'select',
+      '#title' => $this->t('Currency'),
+      '#options' => ['_none' => 'Use default'] + $this->getAvailableCurrencies(),
+      '#default_value' => $this->configuration['currency'],
+      '#size' => 5,
+      '#required' => TRUE,
+      '#eca_token_select_option' => TRUE,
+    ];
     return parent::buildConfigurationForm($form, $form_state);
   }
 
@@ -73,6 +93,13 @@ class ChangePriceInCartAction extends ConfigurableActionBase {
    */
   public function submitConfigurationForm(array &$form, FormStateInterface $form_state): void {
     $this->configuration['final_price'] = $form_state->getValue('final_price');
+    if ($form_state->getValue('currency') === '_none') {
+      $currency = '';
+    }
+    else {
+      $currency = $form_state->getValue('currency');
+    }
+    $this->configuration['currency'] = $currency;
     parent::submitConfigurationForm($form, $form_state);
   }