reorganize and cleanup php server code

server/app/Http/Requests/User/UpdateUserRequest.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Vanguard\Http\Requests\User;
+
+use Illuminate\Validation\Rule;
+use Vanguard\Http\Requests\Request;
+use Vanguard\Support\Enum\UserStatus;
+use Vanguard\User;
+
+class UpdateUserRequest extends Request
+{
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        $user = $this->user();
+
+        return [
+            'email' => 'email|unique:users,email,' . $user->id,
+            'username' => 'nullable|unique:users,username,' . $user->id,
+            'password' => 'min:6|confirmed',
+            'birthday' => 'nullable|date',
+            'role_id' => 'exists:roles,id',
+            'country_id' => 'exists:countries,id',
+            'status' => Rule::in(array_keys(UserStatus::lists()))
+        ];
+    }
+}