feat: convert uploaded contracts and invoices to pdf

config/services.yaml

@@ -31,6 +31,7 @@ services:
         autowire: true
         autoconfigure: true
         bind:
+            $tempDir: '%kernel.project_dir%/temp'
             $logger: '@monolog.logger.myep'
             $destinations: '%destinations%'
 
@@ -138,6 +139,11 @@ services:
             $orphanageManager: '@oneup_uploader.orphanage_manager'
             $projectDir: '%kernel.project_dir%'
 
+    App\Service\Pdf\Sanitizer:
+        arguments:
+            $binGs: '/usr/bin/gs'
+            $binConvert: '/usr/bin/convert'
+
     App\EventListener\UploadSessionListener:
         tags:
             - name: kernel.event_listener

src/Controller/Administrative/Document/CheckController.php

@@ -126,7 +126,11 @@ class CheckController extends AbstractController
         ;
 
         if (Upload::TYPE_INVOICE === $document->getType()) {
+            try {
                 $this->invoiceApprover->render($document->getDisposition());
+            } catch (\InvalidArgumentException $e) {
+                $this->addFlash('error', 'Die Honorarnote ist nicht als PDF hochgeladen worden');
+            }
         }
 
         $this->addFlash('success', 'Das Dokument wurde bestätigt');

src/Controller/Teamer/Disposition/DetailController.php

@@ -86,10 +86,11 @@ class DetailController extends AbstractController
         $disposition->addDocument($upload);
         $this->workflow->apply($disposition, 'upload_contract');
 
-        $this->entityManager->flush();
-
         $this->uploadHandler->moveUploadSessionFilesFromOrphanage(Upload::TYPE_CONTRACT, $uploadSession);
         $this->uploadHandler->destroyUploadSession();
+        $this->uploadHandler->ensurePdf($upload);
+
+        $this->entityManager->flush();
 
         $this->addFlash('success', 'Der Honorarvertrag wurde hochgeladen');
 
@@ -115,10 +116,11 @@ class DetailController extends AbstractController
         $disposition->addDocument($upload);
         $this->workflow->apply($disposition, 'upload_invoice');
 
-        $this->entityManager->flush();
-
         $this->uploadHandler->moveUploadSessionFilesFromOrphanage(Upload::TYPE_INVOICE, $uploadSession);
         $this->uploadHandler->destroyUploadSession();
+        $this->uploadHandler->ensurePdf($upload);
+
+        $this->entityManager->flush();
 
         $this->addFlash('success', 'Die Honornote wurde hochgeladen');
 

src/Service/Pdf/InvoiceApprover.php

@@ -8,12 +8,19 @@ use Symfony\Component\Filesystem\Filesystem;
 
 class InvoiceApprover extends AbstractPdfRenderer
 {
+    /**
+     * @throws \InvalidArgumentException
+     */
     public function render(Disposition $disposition): Pdf
     {
         $teamer = $disposition->getTeamer();
         $assignment = $disposition->getAssignment();
         $invoice = $disposition->getDocumentByType(Upload::TYPE_INVOICE);
-        $originalPdfFilename = $invoice->getFilename();
+        $originalFilename = $invoice->getFilename();
+
+        if ('application/pdf' !== $invoice->getMimeType()) {
+            throw new \InvalidArgumentException('Expected PDF but got '.$invoice->getMimeType());
+        }
 
         $pdf = new Pdf();
 
@@ -21,7 +28,7 @@ class InvoiceApprover extends AbstractPdfRenderer
         $pdf->SetCreator($teamer->getFullName(), true);
 
         // Load template
-        $filepath = sprintf('%s/uploads/invoice/%s', $this->config['project_dir'], $originalPdfFilename);
+        $filepath = sprintf('%s/uploads/invoice/%s', $this->config['project_dir'], $originalFilename);
         $pdf->appendPdf($filepath);
         $pdf->setPage(1);
 

src/Service/Pdf/Sanitizer.php

@@ -0,0 +1,82 @@
+<?php
+
+namespace App\Service\Pdf;
+
+use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\Process\Process;
+
+class Sanitizer
+{
+    public function __construct(
+        private readonly string $binGs,
+        private readonly string $binConvert,
+        private readonly string $tempDir,
+    ) {
+    }
+
+    /**
+     * @throws \InvalidArgumentException
+     */
+    public function sanitizeFile(string $inputFilepath, ?string $targetFilepath = null, bool $backup = true): string
+    {
+        $filesystem = new Filesystem();
+
+        if (true === $backup) {
+            $filesystem->copy($inputFilepath, $inputFilepath.'.bak');
+        }
+
+        $tempFilename = sha1($inputFilepath);
+        $outputFilepath = $this->tempDir.'/'.$tempFilename;
+        $pdfFilepath = null;
+
+        if (null === $targetFilepath) {
+            $targetFilepath = $inputFilepath.'.pdf';
+        }
+
+        if ('pdf' !== pathinfo($inputFilepath, PATHINFO_EXTENSION)) {
+            $pdfFilepath = $outputFilepath.'.pdf';
+
+            $command = [
+                $this->binConvert,
+                $inputFilepath,
+                $pdfFilepath,
+            ];
+
+            $process = new Process($command);
+            $process->run();
+
+            if (false === $process->isSuccessful()) {
+                throw new \InvalidArgumentException('File could not be sanitized: '.$process->getErrorOutput());
+            }
+
+            $inputFilepath = $pdfFilepath;
+        }
+
+        $command = [
+            $this->binGs,
+            '-dNOPAUSE',
+            '-dQUIET',
+            '-dBATCH',
+            '-sDEVICE=pdfwrite',
+            '-dCompatibilityLevel=1.4',
+            '-sOutputFile='.$outputFilepath,
+            '-f',
+            $inputFilepath,
+        ];
+
+        $process = new Process($command);
+        $process->run();
+
+        if (false === $process->isSuccessful()) {
+            throw new \InvalidArgumentException('File could not be sanitized: '.$process->getErrorOutput());
+        }
+
+        $filesystem->rename($outputFilepath, $targetFilepath, true);
+
+        if (null !== $pdfFilepath) {
+            $filesystem->remove($pdfFilepath);
+        }
+
+        return $targetFilepath;
+    }
+}

src/Service/Upload/UploadHandler.php

@@ -5,6 +5,7 @@ namespace App\Service\Upload;
 use App\Entity\Upload;
 use App\Model\UploadDto;
 use App\Model\UploadSessionDto;
+use App\Service\Pdf\Sanitizer;
 use Oneup\UploaderBundle\Uploader\Orphanage\OrphanageManager;
 use Symfony\Component\Filesystem\Exception\IOException;
 use Symfony\Component\Filesystem\Filesystem;
@@ -17,6 +18,7 @@ class UploadHandler
     public function __construct(
         private readonly RequestStack $requestStack,
         private readonly OrphanageManager $orphanageManager,
+        private readonly Sanitizer $sanitizer,
         private readonly string $projectDir
     ) {
     }
@@ -131,4 +133,17 @@ class UploadHandler
     {
         return sprintf('%s/uploads/temp/%s', $this->projectDir, $uploadSessionId);
     }
+
+    public function ensurePdf(Upload $upload): void
+    {
+        try {
+            $filepath = $this->getUploadFilepath($upload);
+            $sanitizedFilepath = $this->sanitizer->sanitizeFile($filepath);
+
+            if ($filepath !== $sanitizedFilepath) {
+                $upload->setFilename(basename($sanitizedFilepath));
+            }
+        } catch (\InvalidArgumentException $e) {
+        }
+    }
 }

tests/Service/Pdf/SanitizerTest.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Tests\Service\Pdf;
+
+use App\Service\Pdf\Sanitizer;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Filesystem\Filesystem;
+
+class SanitizerTest extends TestCase
+{
+    public function testAcceptsImages(): void
+    {
+        $tempDir = realpath(__DIR__.'/../../../temp');
+        $sourceFilepath = realpath(__DIR__.'/../../Resources/upload.jpg');
+        $targetFilepath = $tempDir.'/test.pdf';
+
+        $sanitizer = new Sanitizer('/usr/bin/gs', '/usr/bin/convert', $tempDir);
+
+        $sanitizer->sanitizeFile($sourceFilepath, $targetFilepath);
+
+        $this->assertFileExists($targetFilepath);
+
+        (new Filesystem())->remove($targetFilepath);
+    }
+
+    public function testAcceptsPdfs(): void
+    {
+        $tempDir = realpath(__DIR__.'/../../../temp');
+        $sourceFilepath = realpath(__DIR__.'/../../Resources/upload.pdf');
+        $targetFilepath = $tempDir.'/test.pdf';
+
+        $sanitizer = new Sanitizer('/usr/bin/gs', '/usr/bin/convert', $tempDir);
+
+        $sanitizer->sanitizeFile($sourceFilepath, $targetFilepath);
+
+        $this->assertFileExists($targetFilepath);
+
+        (new Filesystem())->remove($targetFilepath);
+    }
+}