add file preview

Reviewed-on: sites/file-explorer#6

src/Service/FileSystemService.php

@@ -4,6 +4,7 @@ namespace App\Service;
 
 use App\Objects\DirContent;
 use Symfony\Component\DependencyInjection\Attribute\Autowire;
+use Symfony\Component\Filesystem\Exception\IOException;
 use Symfony\Component\Filesystem\Filesystem;
 use Symfony\Component\Finder\Finder;
 use Symfony\Component\HttpFoundation\File\UploadedFile;
@@ -23,7 +24,7 @@ class FileSystemService
     public function getDirs(string $dirs): array
     {
         $finder = new Finder();
-        $finder->in($this->dir . '/' . $dirs);
+        $finder->in($this->getTotalPath($dirs));
 
         $contents = [];
 
@@ -40,7 +41,40 @@ class FileSystemService
     public function uploadFile(array $files): void
     {
         foreach ($files as $file) {
-            $this->filesystem->dumpFile($this->dir . '/' . $file->getClientOriginalName(), $file->getContent());
+            $this->filesystem->dumpFile($this->getTotalPath($file->getClientOriginalName()), $file->getContent());
         }
     }
+
+    public function isFile(string $dirs): bool
+    {
+        try {
+            $this->filesystem->readFile($this->getTotalPath($dirs));
+        } catch (IOException) {
+            return false;
+        }
+
+        return true;
+    }
+
+    public function getFile(string $filePath): DirContent
+    {
+        $dirs = explode('/', $filePath);
+        $fileName = array_pop($dirs);
+
+        $finder = new Finder();
+        $finder->in($this->getTotalPath(implode('/', $dirs)));
+
+        foreach ($finder as $file) {
+            if ($file->getFilename() === $fileName) {
+                return DirContent::make($file, $this->filesystem->readFile($this->getTotalPath($filePath)));
+            }
+        }
+
+        throw new \RuntimeException('File not found');
+    }
+
+    private function getTotalPath(string $filePath): string
+    {
+        return $this->dir . '/' . $filePath;
+    }
 }