Added a button to update exchange rates via web gui.

src/Controller/AdminPages/CurrencyController.php

@@ -47,14 +47,29 @@ use App\Entity\Base\AbstractNamedDBElement;
 use App\Entity\Parameters\CurrencyParameter;
 use App\Entity\PriceInformations\Currency;
 use App\Form\AdminPages\CurrencyAdminForm;
+use App\Services\Attachments\AttachmentSubmitHandler;
 use App\Services\EntityExporter;
 use App\Services\EntityImporter;
+use App\Services\ExchangeRateUpdater;
+use App\Services\LabelSystem\Barcodes\BarcodeExampleElementsGenerator;
+use App\Services\LabelSystem\LabelGenerator;
+use App\Services\LogSystem\EventCommentHelper;
+use App\Services\LogSystem\HistoryHelper;
+use App\Services\LogSystem\TimeTravel;
 use App\Services\StructuralElementRecursionHelper;
 use Doctrine\ORM\EntityManagerInterface;
+use Exchanger\Exception\ChainException;
+use Exchanger\Exception\Exception;
+use Exchanger\Exception\UnsupportedCurrencyPairException;
+use Omines\DataTablesBundle\DataTableFactory;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\Form\FormInterface;
 use Symfony\Component\HttpFoundation\RedirectResponse;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Annotation\Route;
+use Symfony\Component\Security\Core\Encoder\UserPasswordEncoderInterface;
+use Symfony\Contracts\Translation\TranslatorInterface;
 
 /**
  * @Route("/currency")
@@ -70,6 +85,40 @@ class CurrencyController extends BaseAdminController
     protected $attachment_class = CurrencyAttachment::class;
     protected $parameter_class = CurrencyParameter::class;
 
+    protected $exchangeRateUpdater;
+
+    public function __construct(
+        TranslatorInterface $translator,
+        UserPasswordEncoderInterface $passwordEncoder,
+        AttachmentSubmitHandler $attachmentSubmitHandler,
+        EventCommentHelper $commentHelper,
+        HistoryHelper $historyHelper,
+        TimeTravel $timeTravel,
+        DataTableFactory $dataTableFactory,
+        EventDispatcherInterface $eventDispatcher,
+        BarcodeExampleElementsGenerator $barcodeExampleGenerator,
+        LabelGenerator $labelGenerator,
+        EntityManagerInterface $entityManager,
+        ExchangeRateUpdater $exchangeRateUpdater
+
+    ) {
+        $this->exchangeRateUpdater = $exchangeRateUpdater;
+
+        parent::__construct(
+            $translator,
+            $passwordEncoder,
+            $attachmentSubmitHandler,
+            $commentHelper,
+            $historyHelper,
+            $timeTravel,
+            $dataTableFactory,
+            $eventDispatcher,
+            $barcodeExampleGenerator,
+            $labelGenerator,
+            $entityManager
+        );
+    }
+
     /**
      * @Route("/{id}", name="currency_delete", methods={"DELETE"})
      *
@@ -80,6 +129,30 @@ class CurrencyController extends BaseAdminController
         return $this->_delete($request, $entity, $recursionHelper);
     }
 
+    public function additionalActionEdit(FormInterface $form, AbstractNamedDBElement $entity): bool
+    {
+        if (!$entity instanceof Currency) {
+            return false;
+        }
+
+        if ($form->get('update_exchange_rate')->isClicked()) {
+            $this->denyAccessUnlessGranted('edit', $entity);
+            try {
+                $this->exchangeRateUpdater->update($entity);
+                $this->addFlash('info', 'currency.edit.exchange_rate_updated.success');
+            } catch (ChainException $exception) {
+                $exception = $exception->getExceptions()[0];
+                if ($exception instanceof UnsupportedCurrencyPairException || stripos($exception->getMessage(), "supported") !== false) {
+                    $this->addFlash('error', 'currency.edit.exchange_rate_update.unsupported_currency');
+                } else {
+                    $this->addFlash('error', 'currency.edit.exchange_rate_update.generic_error');
+                }
+            }
+        }
+
+        return true;
+    }
+
     /**
      * @Route("/{id}/edit/{timestamp}", requirements={"id"="\d+"}, name="currency_edit")
      * @Route("/{id}", requirements={"id"="\d+"})

src/Form/AdminPages/CurrencyAdminForm.php

@@ -46,6 +46,7 @@ use App\Entity\Base\AbstractNamedDBElement;
 use App\Form\Type\BigDecimalMoneyType;
 use Symfony\Component\Form\Extension\Core\Type\CurrencyType;
 use Symfony\Component\Form\Extension\Core\Type\MoneyType;
+use Symfony\Component\Form\Extension\Core\Type\SubmitType;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\Security\Core\Security;
 
@@ -82,5 +83,16 @@ class CurrencyAdminForm extends BaseEntityAdminForm
             'scale' => 6,
             'disabled' => ! $this->security->isGranted($is_new ? 'create' : 'edit', $entity),
         ]);
+
+        if(!$is_new) {
+            $builder->add(
+                'update_exchange_rate',
+                SubmitType::class,
+                [
+                    'label' => 'currency.edit.update_rate',
+                    'disabled' => ! $this->security->isGranted('edit', $entity)
+                ]
+            );
+        }
     }
 }

src/Services/ExchangeRateUpdater.php

@@ -0,0 +1,34 @@
+<?php
+
+
+namespace App\Services;
+
+
+use App\Entity\PriceInformations\Currency;
+use Brick\Math\BigDecimal;
+use Swap\Swap;
+
+class ExchangeRateUpdater
+{
+    private $base_currency;
+    private $swap;
+
+    public function __construct(string $base_currency, Swap $swap)
+    {
+        $this->base_currency = $base_currency;
+        $this->swap = $swap;
+    }
+
+    /**
+     * Updates the exchange rate of the given currency using the globally configured providers.
+     * @param  Currency  $currency
+     * @return Currency
+     */
+    public function update(Currency $currency): Currency
+    {
+        $rate = $this->swap->latest($currency->getIsoCode().'/'.$this->base_currency);
+        $currency->setExchangeRate(BigDecimal::of($rate->getValue()));
+        return $currency;
+    }
+
+}