Start on removing git and better integrate db

src/Service/SnipContent/SnipContentService.php

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+<?php
+
+namespace App\Service\SnipContent;
+
+use App\Entity\Snip;
+use App\Entity\SnipContent;
+use Doctrine\ORM\EntityManagerInterface;
+
+readonly class SnipContentService
+{
+    public function __construct(
+        private Snip                   $snip,
+        private EntityManagerInterface $em,
+    ) {}
+
+    public function update(string $snipContents): void
+    {
+        // Create new snipContent entity with previous one as parent
+        $content = new SnipContent();
+        $content
+            ->setText($snipContents)
+            ->setSnip($this->snip)
+        ;
+        if ($this->snip->getSnipContents()->count() > 0) {
+            $content->setParent($this->snip->getSnipContents()->last());
+        }
+
+        $this->em->persist($content);
+        $this->em->flush();
+
+        $this->snip->setActiveCommit($content->getId());
+        $this->em->persist($this->snip);
+        $this->em->flush();
+    }
+
+    // Shortcut to get the active text
+    public function getActiveText(): string
+    {
+        $contentRepo = $this->em->getRepository(SnipContent::class);
+        return $contentRepo->find($this->snip->getActiveCommit())->getText();
+    }
+
+    /** @return array{id: string, name: string} */
+    public function getVersions(): array
+    {
+        // Return all snipContent entities (by parent)
+        return array_map(fn(SnipContent $content) => [
+            'id' => (string)$content->getId(),
+            'name' => $content->getId()->getDateTime()->format('Y-m-d H:i:s'),
+        ], $this->snip->getSnipContents()->toArray());
+    }
+
+    public function setVersion(string $version): void
+    {
+        $this->snip->setActiveCommit($version);
+        $this->em->persist($this->snip);
+        $this->em->flush();
+    }
+
+    public function getActiveVersion(): string
+    {
+        return $this->snip->getActiveCommit();
+    }
+
+    public function delete(): void
+    {
+        // Cleanup the versions
+    }
+
+    public function getLatestVersion(): string
+    {
+        return $this->snip->getSnipContents()->last()->getId();
+    }
+}