add site to view and upload files

Reviewed-on: sites/file-explorer#4

src/Service/FileSystemService.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Service;
+
+use App\Objects\DirContent;
+use Symfony\Component\DependencyInjection\Attribute\Autowire;
+use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\Finder\Finder;
+use Symfony\Component\HttpFoundation\File\UploadedFile;
+
+class FileSystemService
+{
+    public function __construct(
+        #[Autowire(env: 'DATA_DIR')]
+        private readonly string $dir,
+         private readonly Filesystem $filesystem,
+    ) {
+    }
+
+    /**
+     * @return DirContent[]
+     */
+    public function getDirs(): array
+    {
+        $finder = new Finder();
+        $finder->in($this->dir);
+
+        $contents = [];
+
+        foreach ($finder->depth(0) as $content) {
+            $contents[] = DirContent::make($content);
+        }
+
+        return $contents;
+    }
+
+    /**
+     * @param UploadedFile[] $files
+     */
+    public function uploadFile(array $files): void
+    {
+        foreach ($files as $file) {
+            $this->filesystem->dumpFile($this->dir . '/' . $file->getClientOriginalName(), $file->getContent());
+        }
+    }
+}