create user class and make use of it

backend/app/plugins/wiaas/includes/api/class-wiaas-rest-user-api.php

@@ -8,6 +8,10 @@ class Wiass_REST_User_API {
 	 */
 	private static $namespace = 'wiaas';
 
+	public function __construct() {
+		include_once dirname( __FILE__ ) . '/user/class-wiaas-user-profile.php';
+	}
+
 
 	public static function register_routes() {
 		register_rest_route( self::$namespace, 'user/validate-token', array(
@@ -39,21 +43,8 @@ class Wiass_REST_User_API {
 	}
 
 	public static function get_countries(){
-		$result = [
+		$countries = Wiaas_User_Profile::get_list_of_countries();
-			array(
-				'idCountry' => '1',
-				'countryName' => 'Sweden'
-			),
-			array(
-				'idCountry' => '2',
-				'countryName' => 'Finland'
-			),
-			array(
-				'idCountry' => '3',
-				'countryName' => 'Denmark'
-			)
-		];
 
-		return new WP_REST_Response($result);
+		return new WP_REST_Response($countries);
 	}
 }

backend/app/plugins/wiaas/includes/user/class-wiaas-user-profile.php

@@ -0,0 +1,40 @@
+<?php
+
+// Exit if accessed directly
+defined( 'ABSPATH' ) || exit;
+
+class Wiaas_User_Profile {
+
+	const LIST_OF_COUNTRIES = [
+		array(
+			'idCountry' => '1',
+			'countryName' => 'Sweden'
+		),
+		array(
+			'idCountry' => '2',
+			'countryName' => 'Finland'
+		),
+		array(
+			'idCountry' => '3',
+			'countryName' => 'Denmark'
+		)
+	];
+
+	public static function get_list_of_countries(){
+		return self::LIST_OF_COUNTRIES;
+	}
+
+	public static function check_country_id($id){
+		foreach (self::LIST_OF_COUNTRIES as $country){
+			if ($country['idCountry'] === $id) return true;
+		}
+		return false;
+	}
+
+	public static function get_country_name_by_id($id){
+		foreach(self::LIST_OF_COUNTRIES as $country){
+			if ($country['idCountry'] === $id) return $country['countryName'];
+		}
+		return '';
+	}
+}