stash light

src/Service/DocumentService.php

@@ -0,0 +1,123 @@
+<?php
+
+namespace App\Service;
+
+use App\Entity\Document;
+use App\Entity\DocumentVersion;
+use App\Entity\User;
+use Doctrine\ORM\EntityManagerInterface;
+
+class DocumentService
+{
+    public function __construct(
+        private EntityManagerInterface $em
+    ) {}
+
+    /**
+     * Erstellt ein neues Dokument inkl. Version 1
+     */
+    public function createDocument(
+        string $title,
+        string $filePath,
+        User $user
+    ): Document {
+
+        $document = new Document();
+        $document->setTitle($title);
+        $document->setCreatedBy($user);
+
+        $version = new DocumentVersion();
+        $version->setVersionNumber(1);
+        $version->setFilePath($filePath);
+        $version->setChecksum($this->calculateChecksum($filePath));
+        $version->setCreatedBy($user);
+        $version->setActive(true);
+
+        $document->addVersion($version);
+        $document->setCurrentVersion($version);
+
+        $this->em->persist($document);
+        $this->em->persist($version);
+        $this->em->flush();
+
+        return $document;
+    }
+
+    /**
+     * Fügt neue Version hinzu (immutable)
+     */
+    public function addVersion(
+        Document $document,
+        string $filePath,
+        User $user
+    ): DocumentVersion {
+
+        $nextVersionNumber = $this->getNextVersionNumber($document);
+
+        $version = new DocumentVersion();
+        $version->setVersionNumber($nextVersionNumber);
+        $version->setFilePath($filePath);
+        $version->setChecksum($this->calculateChecksum($filePath));
+        $version->setCreatedBy($user);
+        $version->setActive(false);
+
+        $document->addVersion($version);
+
+        $this->em->persist($version);
+        $this->em->flush();
+
+        return $version;
+    }
+
+    /**
+     * Aktiviert eine Version (setzt andere inaktiv)
+     */
+    public function activateVersion(DocumentVersion $version): void
+    {
+        $document = $version->getDocument();
+
+        foreach ($document->getVersions() as $existingVersion) {
+            $existingVersion->setActive(false);
+        }
+
+        $version->setActive(true);
+        $document->setCurrentVersion($version);
+
+        $this->em->flush();
+    }
+
+    /**
+     * Archiviert Dokument
+     */
+    public function archive(Document $document): void
+    {
+        $document->archive();
+        $this->em->flush();
+    }
+
+    /**
+     * Berechnet SHA256 Checksum
+     */
+    private function calculateChecksum(string $filePath): string
+    {
+        if (!file_exists($filePath)) {
+            throw new \RuntimeException('File not found for checksum.');
+        }
+
+        return hash_file('sha256', $filePath);
+    }
+
+    /**
+     * Ermittelt nächste Versionsnummer
+     */
+    private function getNextVersionNumber(Document $document): int
+    {
+        $max = 0;
+
+        foreach ($document->getVersions() as $version) {
+            $max = max($max, $version->getVersionNumber());
+        }
+
+        return $max + 1;
+    }
+}