feat: add stub implementation for image

QRCodeFromEntity

fix: base64 StubQRCodeGenerator

assets/styles/app.css

@@ -5,3 +5,7 @@ body {
 .header {
     background-color: skyblue;
 }
+
+.header-another-code {
+    font-size: 2rem;
+}

config/services.yaml

@@ -27,8 +27,13 @@ services:
         arguments:
             $available_currencies: '%app.currencies%'
 
+    App\Service\StubQRCodeGenerator:
+        arguments:
+            $imagePath: '%kernel.project_dir%/assets/images/wip.png'
+
     App\Service\CurrencyListerInterface: '@App\Service\StaticCurrencyLister'
     App\Service\QRCodeQROptionsProviderInterface: '@App\Service\QRCodeQROptionsDefaultProvider'
+    App\Service\QRCodeGeneratorInterface: '@App\Service\StubQRCodeGenerator'
 
     # add more service definitions when explicit configuration is needed
     # please note that last definitions always *replace* previous ones

src/Controller/IndexController.php

@@ -4,6 +4,7 @@ namespace App\Controller;
 
 use App\Entity\QRCode\QRCode;
 use App\Form\Type\QRCodeType;
+use App\Service\QRCodeGeneratorInterface;
 use App\Service\QRCodeQROptionsProviderInterface;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Component\HttpFoundation\Request;
@@ -11,14 +12,16 @@ use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Attribute\Route;
 
 class IndexController extends AbstractController {
-
+    public function __construct(private readonly QRCodeQROptionsProviderInterface $qrCodeQROptionsFactory) {}
     #[Route('/', name: 'homepage')]
-    public function indexAction(Request $request, QRCodeQROptionsProviderInterface $qrCodeQROptionsFactory): Response
+    public function indexAction(
+        Request $request,
+        QRCodeGeneratorInterface $qrCodeGenerator,
+    ): Response
     {
-        $qrCode = new QRCode(
-            codeQROptions: $qrCodeQROptionsFactory->getDefault()
-        );
+        $qrCodeImage = null;
 
+        $qrCode = $this->createQrCodeEntity();
         $form = $this->createForm(QRCodeType::class, $qrCode);
 
 
@@ -26,13 +29,24 @@ class IndexController extends AbstractController {
             $form->submit($request->request->all($form->getName()));
 
             if ($form->isSubmitted() && $form->isValid()) {
-                // TODO: call service to generate
-                print_r($qrCode);
+                /* Puvodne jsem premyslel nad redirectem a ulozenim obrazku
+                    do session, nicmene u takovehleho typu aplikace me to prijde naopak kontraproduktivni.
+                    a zadani o tom mlci. Navic v pripade ze aplikace bude provozovana ve vice instancich
+                    by se musela resit memcache, redis... */
+                $qrCodeImage = $qrCodeGenerator->generateQRCodeFromEntity($qrCode);
+                $form = $this->createForm(QRCodeType::class, $this->createQrCodeEntity());
             }
         }
 
         return $this->render('index/homepage.html.twig', [
-            'form' => $form
+            'form' => $form,
+            'qrCodeImage' => $qrCodeImage
         ]);
     }
+
+    private function createQrCodeEntity(): QRCode {
+        return new QRCode(
+            codeQROptions: $this->qrCodeQROptionsFactory->getDefault()
+        );
+    }
 }

src/Service/QRCodeGeneratorInterface.php

@@ -0,0 +1,16 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Entity\QRCode\QRCode;
+
+interface QRCodeGeneratorInterface
+{
+    /**
+     * Generates QR code from entity
+     * @param QRCode $entity
+     * @return string base64 encoded PNG
+     */
+    public function generateQRCodeFromEntity(QRCode $entity): string;
+}

src/Service/StubQRCodeGenerator.php

@@ -0,0 +1,21 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Entity\QRCode\QRCode;
+
+readonly final class StubQRCodeGenerator implements QRCodeGeneratorInterface
+{
+    public function __construct(private string $imagePath) {}
+
+    public function generateQRCodeFromEntity(QRCode $entity): string
+    {
+        $content = file_get_contents($this->imagePath);
+
+        return match ($content) {
+            false => throw new \InvalidArgumentException('Image path is invalid'),
+            default => base64_encode($content)
+        };
+    }
+}

templates/index/homepage.html.twig

@@ -2,6 +2,12 @@
 
 {% block body %}
 <div class="container">
+    {% if qrCodeImage %}
+        <div class="d-flex p-3 justify-content-center qr-code-image">
+            <img src="data:image/png;base64,{{ qrCodeImage }}" alt="QR code" />
+        </div>
+        <h2 class="header-another-code">{{  "You can generate another QR code here" | trans }}:</h2>
+    {% endif %}
     {{ form_start(form) }}
     <div class="mb-3 col-auto">
         {{ form_label(form.iban) }}

translations/messages.cs.yaml

@@ -8,3 +8,4 @@ Specific symbol: "Specifický symbol"
 Generate qr code: "Vygenerovat QR kód"
 Iban: "IBAN"
 QR code generator: "Generátor bankovních QR kódů"
+You can generate another QR code here: "Další QR kód si můžete vygenerovat zde"