Refactor readFiles method in SapFileController for improved error handling and code clarity

app/Http/Controllers/SapFileController.php

@@ -33,23 +33,37 @@ class SapFileController extends Controller
         $path = "/srv/pds.iotsignin.com/sapftp/In/";
 
         // $files = scandir($path);
+        if (!is_dir($path) || !is_readable($path)) {
+            return response()->json([
+                'status' => 'error',
+                'message' => 'Folder not accessible',
+            ], 500);
+        }
 
-       $path = '/srv/pds.iotsignin.com/sapftp/In/';
+        $files = array_filter(scandir($path), function($file) use ($path) {
+            return $file !== '.' && $file !== '..' && is_file($path . $file)
+                && pathinfo($file, PATHINFO_EXTENSION) === 'txt';
+        });
+
+        if (empty($files)) {
+            return response()->json([
+                'status' => 'error',
+                'message' => 'No text files found',
+            ], 404);
+        }
 
-        $files = array_filter(scandir($path), fn($file) =>
-            $file !== '.' && $file !== '..' && is_file($path . $file) && pathinfo($file, PATHINFO_EXTENSION) === 'txt'
-        );
 
          $data = [];
-
         foreach ($files as $file) {
+            $filePath = $path . $file;
+
+            // Read file content safely
+            $content = file_get_contents($filePath);
+
             $data[] = [
                 'filename' => $file,
-                'content'  => file_get_contents($path . $file), // plain text content
+                'content' => $content,
             ];
-
-            // Optional: move processed file to Out
-            rename($path . $file, '/srv/pds.iotsignin.com/sapftp/Out/' . $file);
         }
 
         return response()->json([