first change

Modules/Employee/app/Services/DesignationService.php

@@ -0,0 +1,67 @@
+<?php
+
+namespace Modules\Employee\Services;
+
+use Illuminate\Support\Facades\DB;
+use Modules\Employee\Models\Designation;
+
+class DesignationService
+{
+
+    public function getAllDesignations(Request $request, callable $query = null, $paginate = false, $limit = 10)
+    {
+        $baseQuery = Designation::query();
+
+        if (is_callable($query)) {
+            $query($baseQuery);
+        }
+
+        if ($paginate) {
+            return $baseQuery->paginate($limit);
+        }
+
+        return $baseQuery->get();
+    }
+
+    public function storeDesignation(array $designationData): Designation
+    {
+        return DB::transaction(function () use ($designationData) {
+            $designation = Designation::create($designationData);
+
+            return $designation;
+        });
+    }
+
+    public function getDesignationById(int $id)
+    {
+        return Designation::findOrFail($id);
+    }
+
+    public function updateDesignation(int $id, array $designationData)
+    {
+        $designation = $this->getDesignationById($id);
+
+        return DB::transaction(function () use ($designation, $designationData) {
+            $designation->update($designationData);
+            return $designation;
+        });
+    }
+
+    public function deleteDesignation(int $id)
+    {
+        return DB::transaction(function () use ($id) {
+            $designation = $this->getDesignationById($id);
+            $designation->delete();
+            return $designation;
+        });
+    }
+
+    public function pluck(callable $query = null)
+    {
+        $baseQuery = Designation::query();
+        if (is_callable($query)) {
+            $query($baseQuery);
+        }
+        return $baseQuery->pluck('title', 'id');
+    }
+}