extract pdf use case

backend/app/Shared/Files/LaravelStoredFileReader.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Shared\Files;
+
+use Illuminate\Support\Facades\Storage;
+
+class LaravelStoredFileReader implements StoredFileReader
+{
+    public function read(string $path): ?string
+    {
+        if (!Storage::disk('public')->exists($path)) {
+            return null;
+        }
+
+        return Storage::disk('public')->get($path);
+    }
+}

backend/app/Shared/Files/StoredFileReader.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace App\Shared\Files;
+
+interface StoredFileReader
+{
+    public function read(string $path): ?string;
+}