Refactor user and session migrations to use UUIDs; update DatabaseSeeder for test user creation; enhance LetterController with search functionality and API route protection

app/Http/Controllers/LetterController.php

@@ -33,6 +33,7 @@ class LetterController extends Controller
     {
         try {
             $letters = Letter::with('fileUpload')
+                ->latest() // Sort by latest created_at
                 ->get()
                 ->map(fn($letter) => $this->formatLetterResponse($letter));
 
@@ -49,6 +50,40 @@ class LetterController extends Controller
         }
     }
 
+    /**
+     * Search letters based on given criteria
+     *
+     * @param Request $request
+     * @return JsonResponse
+     */
+    public function search(Request $request): JsonResponse
+    {
+        try {
+            $query = Letter::with('fileUpload');
+
+            // Search by NIM
+            if ($request->has('nim')) {
+                $query->where('nomor_induk_mahasiswa', 'like', '%' . $request->nim . '%');
+            }
+
+            $letters = $query
+                ->latest() // Always sort by latest
+                ->get()
+                ->map(fn($letter) => $this->formatLetterResponse($letter));
+
+            return response()->json([
+                'success' => true,
+                'data' => $letters
+            ]);
+        } catch (Exception $e) {
+            return response()->json([
+                'success' => false,
+                'message' => 'Error searching letters',
+                'error' => $e->getMessage()
+            ], 500);
+        }
+    }
+
     /**
      * Store a newly created letter
      *
@@ -69,7 +104,7 @@ class LetterController extends Controller
                 'tahun_ajaran' => 'required|string',
                 'start_date' => 'required|date',
                 'completion_date' => 'required|date',
-                'lampiran' => 'nullable|file|mimes:pdf,jpg,png|max:2048', // Max 2MB
+                'lampiran' => 'nullable|file|mimes:pdf,jpg,png|max:2048',
             ]);
 
             // Create letter with UUID and optional fields