first change

Modules/Employee/app/Services/DepartmentService.php

@@ -0,0 +1,67 @@
+<?php
+
+namespace Modules\Employee\Services;
+
+use Illuminate\Support\Facades\DB;
+use Modules\Employee\Models\Department;
+
+class DepartmentService
+{
+
+    public function getAllDepartments(Request $request, callable $query = null, $paginate = false, $limit = 10)
+    {
+        $baseQuery = Department::query();
+
+        if (is_callable($query)) {
+            $query($baseQuery);
+        }
+
+        if ($paginate) {
+            return $baseQuery->paginate($limit);
+        }
+
+        return $baseQuery->get();
+    }
+
+    public function storeDepartment(array $departmentData): Department
+    {
+        return DB::transaction(function () use ($departmentData) {
+            $department = Department::create($departmentData);
+
+            return $department;
+        });
+    }
+
+    public function getDepartmentById(int $id)
+    {
+        return Department::findOrFail($id);
+    }
+
+    public function updateDepartment(int $id, array $departmentData)
+    {
+        $department = $this->getDepartmentById($id);
+
+        return DB::transaction(function () use ($department, $departmentData) {
+            $department->update($departmentData);
+            return $department;
+        });
+    }
+
+    public function deleteDepartment(int $id)
+    {
+        return DB::transaction(function () use ($id) {
+            $department = $this->getDepartmentById($id);
+            $department->delete();
+            return $department;
+        });
+    }
+
+    public function pluck(callable $query = null)
+    {
+        $baseQuery = Department::query();
+        if (is_callable($query)) {
+            $query($baseQuery);
+        }
+        return $baseQuery->pluck('title', 'id');
+    }
+}