Added an console command for updating currency exchange rates.

.env

@@ -37,6 +37,6 @@ MAILER_URL=null://localhost
 
 ### Custom vars
 
-
+FIXER_API_KEY=CHANGEME
 
 ### End custom vars

composer.json

@@ -8,10 +8,15 @@
         "ext-intl": "*",
         "ext-mbstring": "*",
         "doctrine/annotations": "^1.6",
+        "florianv/swap": "^4.0",
         "friendsofsymfony/ckeditor-bundle": "^2.0",
         "gerardojbaez/money": "^0.3.1",
+        "nyholm/psr7": "^1.1",
         "ocramius/proxy-manager": "2.1.*",
         "omines/datatables-bundle": "^0.2.2",
+        "php-http/curl-client": "^2.0",
+        "php-http/guzzle6-adapter": "^2.0",
+        "php-http/message": "^1.8",
         "php-translation/symfony-bundle": "^0.8.1",
         "s9e/text-formatter": "^2.0",
         "sensio/framework-extra-bundle": "^5.1",

config/packages/nyholm_psr7.yaml

@@ -0,0 +1,21 @@
+services:
+    # Register nyholm/psr7 services for autowiring with PSR-17 (HTTP factories)
+    Psr\Http\Message\RequestFactoryInterface: '@nyholm.psr7.psr17_factory'
+    Psr\Http\Message\ResponseFactoryInterface: '@nyholm.psr7.psr17_factory'
+    Psr\Http\Message\ServerRequestFactoryInterface: '@nyholm.psr7.psr17_factory'
+    Psr\Http\Message\StreamFactoryInterface: '@nyholm.psr7.psr17_factory'
+    Psr\Http\Message\UploadedFileFactoryInterface: '@nyholm.psr7.psr17_factory'
+    Psr\Http\Message\UriFactoryInterface: '@nyholm.psr7.psr17_factory'
+
+    # Register nyholm/psr7 services for autowiring with HTTPlug factories
+    Http\Message\MessageFactory: '@nyholm.psr7.httplug_factory'
+    Http\Message\RequestFactory: '@nyholm.psr7.httplug_factory'
+    Http\Message\ResponseFactory: '@nyholm.psr7.httplug_factory'
+    Http\Message\StreamFactory: '@nyholm.psr7.httplug_factory'
+    Http\Message\UriFactory: '@nyholm.psr7.httplug_factory'
+
+    nyholm.psr7.psr17_factory:
+        class: Nyholm\Psr7\Factory\Psr17Factory
+
+    nyholm.psr7.httplug_factory:
+        class: Nyholm\Psr7\Factory\HttplugFactory

config/services.yaml

@@ -37,5 +37,10 @@ services:
         tags:
             - { name: "doctrine.orm.entity_listener" }
 
+    App\Command\UpdateExchangeRatesCommand:
+        arguments:
+            $base_current: '%default_currency%'
+
+
     # add more service definitions when explicit configuration is needed
     # please note that last definitions always *replace* previous ones

src/Command/UpdateExchangeRatesCommand.php

@@ -0,0 +1,102 @@
+<?php
+
+namespace App\Command;
+
+use App\Entity\PriceInformations\Currency;
+use App\Form\AdminPages\CurrencyAdminForm;
+use Doctrine\ORM\EntityManagerInterface;
+use PHPUnit\Runner\Exception;
+use Swap\Builder;
+use Swap\Swap;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+class UpdateExchangeRatesCommand extends Command
+{
+    protected static $defaultName = 'app:update-exchange-rates';
+
+    protected $base_current;
+    protected $em;
+
+    public function __construct(string $base_current, EntityManagerInterface $entityManager)
+    {
+        //$this->swap = $swap;
+        $this->base_current = $base_current;
+
+        $this->em = $entityManager;
+
+        parent::__construct();
+    }
+
+    protected function configure()
+    {
+        $this
+            ->setDescription('Updates the currency exchange rates.')
+            ->addArgument('iso_code', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, 'The ISO Codes of the currencies that should be updated.')
+            ->addOption('service', null, InputOption::VALUE_REQUIRED,
+                'Which service should be used for requesting the exchange rates (e.g. fixer). See florianv/swap for full list.',
+                'exchange_rates_api')
+            ->addOption('api_key', null, InputOption::VALUE_REQUIRED,
+                'The API key to use for the service.',
+                null);
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $io = new SymfonyStyle($input, $output);
+
+        //Check for valid base current
+        if (strlen($this->base_current) !== 3) {
+            $io->error("Choosen Base current is not valid. Check your settings!");
+            return;
+        }
+
+        $io->note('Update currency exchange rates with base currency: ' . $this->base_current);
+
+        $service = $input->getOption('service');
+        $api_key = $input->getOption('api_key');
+
+        //Construct Swap with the given options
+        $swap = (new Builder())
+            ->add($service, ['access_key' => $api_key])
+            ->build();
+
+        //Check what currencies we need to update:
+        $iso_code = $input->getArgument('iso_code');
+        $repo = $this->em->getRepository(Currency::class);
+        $candidates = array();
+
+        if (!empty($iso_code)) {
+            $candidates = $repo->findBy(['iso_code' => $iso_code]);
+        } else {
+            $candidates = $repo->findAll();
+        }
+
+        $success_counter = 0;
+
+        //Iterate over each candidate and update exchange rate
+        foreach ($candidates as $currency) {
+            try {
+                $rate = $swap->latest($currency->getIsoCode() . '/' . $this->base_current);
+                $currency->setExchangeRate($rate->getValue());
+                $io->note(sprintf('Set exchange rate of %s to %f', $currency->getIsoCode(), $currency->getExchangeRate()));
+                $this->em->persist($currency);
+
+                $success_counter++;
+            } catch (\Exchanger\Exception\Exception $ex) {
+                $io->warning(sprintf('Error updating %s:', $currency->getIsoCode()));
+                $io->warning($ex->getMessage());
+            }
+
+        }
+
+        //Save to database
+        $this->em->flush();
+
+        $io->success(sprintf('%d (of %d) currency exchange rates were updated.', $success_counter, count($candidates)));
+    }
+}

src/Form/AdminPages/CurrencyAdminForm.php

@@ -52,6 +52,7 @@ class CurrencyAdminForm extends BaseEntityAdminForm
 
         $builder->add('exchange_rate', MoneyType::class, ['required' => false,
             'label' => 'currency.exchange_rate.label', 'currency' => $this->params->get('default_currency'),
+            'scale' => 6,
             'disabled' => !$this->security->isGranted($is_new ? 'create' : 'edit', $entity)]);
     }
 }

symfony.lock

@@ -1,4 +1,7 @@
 {
+    "clue/stream-filter": {
+        "version": "v1.4.1"
+    },
     "doctrine/annotations": {
         "version": "1.0",
         "recipe": {
@@ -96,6 +99,12 @@
     "fig/link-util": {
         "version": "1.0.0"
     },
+    "florianv/exchanger": {
+        "version": "1.4.1"
+    },
+    "florianv/swap": {
+        "version": "3.5.0"
+    },
     "friendsofsymfony/ckeditor-bundle": {
         "version": "2.0",
         "recipe": {
@@ -111,6 +120,15 @@
     "gerardojbaez/money": {
         "version": "v0.3.1"
     },
+    "guzzlehttp/guzzle": {
+        "version": "6.3.3"
+    },
+    "guzzlehttp/promises": {
+        "version": "v1.3.1"
+    },
+    "guzzlehttp/psr7": {
+        "version": "1.6.1"
+    },
     "jdorn/sql-formatter": {
         "version": "v1.2.17"
     },
@@ -126,6 +144,18 @@
     "nyholm/nsa": {
         "version": "1.1.0"
     },
+    "nyholm/psr7": {
+        "version": "1.0",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "master",
+            "version": "1.0",
+            "ref": "0cd4d2d0e7f646fda75f9944f747a56e6ed13d4c"
+        },
+        "files": [
+            "./config/packages/nyholm_psr7.yaml"
+        ]
+    },
     "ocramius/proxy-manager": {
         "version": "2.1.1"
     },
@@ -141,6 +171,27 @@
             "./config/packages/datatables.yaml"
         ]
     },
+    "php-http/curl-client": {
+        "version": "2.0.0"
+    },
+    "php-http/discovery": {
+        "version": "1.7.0"
+    },
+    "php-http/guzzle6-adapter": {
+        "version": "v2.0.1"
+    },
+    "php-http/httplug": {
+        "version": "v2.0.0"
+    },
+    "php-http/message": {
+        "version": "1.8.0"
+    },
+    "php-http/message-factory": {
+        "version": "v1.0.2"
+    },
+    "php-http/promise": {
+        "version": "v1.0.0"
+    },
     "php-translation/common": {
         "version": "1.0.0"
     },
@@ -180,12 +231,27 @@
     "psr/container": {
         "version": "1.0.0"
     },
+    "psr/http-client": {
+        "version": "1.0.0"
+    },
+    "psr/http-factory": {
+        "version": "1.0.1"
+    },
+    "psr/http-message": {
+        "version": "1.0.1"
+    },
     "psr/link": {
         "version": "1.0.0"
     },
     "psr/log": {
         "version": "1.1.0"
     },
+    "psr/simple-cache": {
+        "version": "1.0.1"
+    },
+    "ralouphie/getallheaders": {
+        "version": "3.0.3"
+    },
     "roave/security-advisories": {
         "version": "dev-master"
     },

templates/AdminPages/CurrencyAdmin.html.twig

@@ -20,7 +20,7 @@
     {{ form_row(form.exchange_rate) }}
     {% if entity.inverseExchangeRate %}
         <span class="form-text text-muted offset-3 col-9">
-        {{ '1'|format_currency(default_currency) }} = {{ entity.inverseExchangeRate | format_currency(entity.isoCode) }}
+        {{ '1'|format_currency(default_currency) }} = {{ entity.inverseExchangeRate | format_currency(entity.isoCode, {fraction_digit: 5}) }}
     </span>
     {% endif %}
 {% endblock %}