Woocommerce Plugin GLS - ASM: Add tracking button in "my orders" page

wc-glsasm-add-tracking-button-in-orders.php

<?php
	if ( !class_exists( 'GlsAsm' ) ) {
		class GlsAsm{
			function activate(){
				add_filter ( 'woocommerce_my_account_my_orders_actions', array( $this, 'go_add_shipping_tracking_to_customer_orders_table' ), 10, 2 );
				add_action( 'woocommerce_after_account_orders', array( $this, 'action_after_account_orders_js'));
			}

			function go_add_shipping_tracking_to_customer_orders_table($actions, $order) {
				if ( $order->has_status( 'completed' ) ) {
					$codbarras = get_post_meta( $order->get_id(), 'codbarras', TRUE );
					if ( ! empty( $codbarras ) ) {
						foreach ( $order->get_items( 'shipping' ) as $item_id => $shipping_item_obj ) {
							$mid = $shipping_item_obj->get_method_id();
						}
						if ( $mid == 'parcelshop' ) {
							$cp_destino = get_post_meta( $order->get_id(), 'parcel_cp', TRUE );
						} else {
							$cp_destino = get_post_meta( $order->get_id(), '_shipping_postcode', TRUE );
						}
						$url = 'https://www.asmred.com/Extranet/Public/ExpedicionASM.aspx?cpDst=' . $cp_destino . '&codigo=' . $codbarras;
						$actions['gls-tracking'] = array(
							'url'  => $url,
							'name' => __( 'Tracking', 'textdomain' )
						);
					}
				}
				return $actions;
			}

			function action_after_account_orders_js() {
				$action_slug = 'gls-tracking';
				?>
				<script>
                    jQuery(function($){
                        $('a.<?php echo $action_slug; ?>').each( function(){
                            $(this).attr('target','_blank');
                        })
                    });
				</script>
				<?php
			}
		}
		$glsasm = new GlsAsm();
		$glsasm->activate();
	}