use new list of countries and adapt backend and frontend to it

backend/app/plugins/wiaas/includes/class-wiaas-countries.php

@@ -17,18 +17,21 @@ class Wiaas_Countries {
 	 */
 	private static $available_countries = array(
 		'Sweden' => array(
+			'id' => 1,
 			'name' => 'Sweden',
 			'code' => 'se',
 			'vat' => 9 ,
 			'currency' => 'SEK'
 		),
 		'Denmark' => array(
+			'id' => 2,
 			'name' => 'Denmark',
 			'code' => 'dk',
 			'vat' => 9 ,
 			'currency' => 'DKK'
 		),
 		'Finland' => array(
+			'id' => 3,
 			'name' => 'Finland',
 			'code' => 'fi',
 			'vat' => 9 ,
@@ -41,6 +44,24 @@ class Wiaas_Countries {
 		add_action('woocommerce_after_register_taxonomy', array(__CLASS__, 'register_product_countries_taxonomy'));
 	}
 
+	public static function get_list_of_countries(){
+		$result = [];
+		foreach(self::$available_countries as $country){
+			array_push($result, array(
+				'idCountry' => $country['id'],
+				'countryName' => $country['name']
+			));
+		}
+		return $result;
+	}
+
+	public static function get_country_name_by_id($id){
+		foreach(self::$available_countries as $country){
+			if ($country['id'] == $id) return $country['name'];
+		}
+		return '';
+	}
+
 	/**
 	 * Registers product taxonomy for avaiable countries
 	 */