Add FileController to show files on frontend

app/Http/Controllers/FileController.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Vault;
+use Illuminate\Support\Str;
+use Illuminate\Http\Request;
+use App\Actions\ResolveTwoPaths;
+use Illuminate\Support\Facades\Gate;
+use App\Actions\GetPathFromVaultNode;
+use App\Actions\GetVaultNodeFromPath;
+use Illuminate\Support\Facades\Storage;
+
+class FileController extends Controller
+{
+    /**
+     * Show the file for a given user.
+     */
+    public function show(Vault $vault, Request $request)
+    {
+        Gate::authorize('view', $request->vault);
+
+        if (!$request->has('path')) {
+            abort(404);
+        }
+
+        $path = $request->path;
+
+        if (!Str::of($request->path)->startsWith('/') && $request->has('node')) {
+            $node = $vault->nodes()->findOrFail($request->node);
+
+            if ($node->vault_id != $vault->id) {
+                abort(404);
+            }
+
+            $currentPath = $node->ancestorsAndSelf()->get()->last()->full_path;
+            $path = (new ResolveTwoPaths())->handle($currentPath, $request->path);
+        }
+
+        $node = (new GetVaultNodeFromPath())->handle($vault->id, $path);
+        $relativePath = (new GetPathFromVaultNode())->handle($node);
+        $absolutePath = Storage::disk('local')->path($relativePath);
+
+        ob_end_clean();
+        return response()->file($absolutePath);
+    }
+}