improve all of the code

app/Services/Mission/RequestPortalService.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Services\Mission;
+
+
+use App\Facades\DataTable\DataTableFacade;
+use App\Http\Traits\ApiResponse;
+use App\Models\Mission;
+use Illuminate\Http\Request;
+
+class RequestPortalService
+{
+    use ApiResponse;
+
+    public function datatable(Request $request)
+    {
+        $user = auth()->user();
+        $query = Mission::query();
+
+        if ($user->hasPermissionTo('mission-manage-city')) {
+            $query->where('edarate_shahri_id', '=', $user->edarate_shahri_id);
+        }
+        elseif ($user->hasPermissionTo('mission-manage-province')) {
+            $query->where('province_id', '=', $user->province_id);
+        }
+        return DataTableFacade::run(
+            $query,
+            $request,
+            allowedFilters: ['*'],
+            allowedSortings: ['*']
+        );
+
+    }
+}