register and display custom order statuses

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

@@ -22,6 +22,12 @@ class Wiaas_Order {
 
 		add_filter('woocommerce_register_post_type_shop_order', array(__CLASS__, 'manage_order_settings'));
 
+		add_filter( 'woocommerce_register_shop_order_post_statuses', array(__CLASS__, 'register_custom_wiaas_order_statuses'), 10, 1);
+
+		add_filter( 'wc_order_statuses', array(__CLASS__, 'add_custom_wiaas_statuses_to_list' ), 10, 1);
+
+		add_filter( 'bulk_actions-edit-shop_order', array(__CLASS__, 'add_custom_statuses_to_bulk_edit' ), 10, 1);
+
 		add_filter('woocommerce_rest_check_permissions', array( __CLASS__, 'check_order_access'), 10, 4);
 
 		add_filter('woocommerce_rest_prepare_shop_order_object', array(__CLASS__, 'transform_rest_order'), 999, 3);
@@ -203,6 +209,51 @@ class Wiaas_Order {
 		return $order->get_meta('_wiaas_delivery_suppliers');
 	}
 
+	/**
+	 * Register additional order statuses 
+	 * 
+	 * @param array $order_statuses
+	 * 
+	 * @return array
+	 */
+	public static function register_custom_wiaas_order_statuses($order_statuses){
+		// Status must start with "wc-"
+		$order_statuses['wc-open'] = array(                                            
+			'label'                     => _x( 'Open', 'Order status', 'woocommerce' ),
+			'public'                    => false,                                            
+			'exclude_from_search'       => false,                                            
+			'show_in_admin_all_list'    => true,                                         
+			'show_in_admin_status_list' => true,                                         
+			'label_count'               => _n_noop( 'Open <span class="count">(%s)</span>', 'Open <span class="count">(%s)</span>', 'woocommerce' ),                                       
+			);      
+			return $order_statuses;
+	}
+
+	/**
+	 * display custom wiaas statuses in order status dropdown
+	 * 
+	 * @param array $order_statuses
+	 * 
+	 * @return array
+	 */
+	public static function add_custom_wiaas_statuses_to_list($order_statuses){
+		$order_statuses['wc-open'] = _x( 'Open', 'Order status', 'woocommerce' );       
+		return $order_statuses;
+	}
+
+	/**
+	 * display custom wiaas statuses in bulk actions
+	 * 
+	 * @param array $bulk_actions
+	 * 
+	 * @return array
+	 */
+	public static function add_custom_statuses_to_bulk_edit($bulk_actions){
+		// Note: "mark_" must be there instead of "wc"
+		$bulk_actions['mark_open'] = 'Change status to open';
+		return $bulk_actions;
+	}
+
 	/**
 	 * Update `shop_order` post type settings before creation to enable better order management for wiaas
 	 *