<?php
/**
 * WooCommerce MC Stats package
 */

declare( strict_types = 1 );

namespace Automattic\WooCommerce\Internal;

use Automattic\Jetpack\A8c_Mc_Stats;

/**
 * Class MC Stats, used to record internal usage stats for Automattic.
 *
 * This class is a wrapper around the Jetpack MC Stats package.
 * See https://github.com/Automattic/jetpack-a8c-mc-stats/tree/trunk for more details.
 */
class McStats extends A8c_Mc_Stats {

	/**
	 * Return the stats from a group in an array ready to be added as parameters in a query string
	 *
	 * Jetpack MC Stats package prefixes group names with "x_jetpack-" so we override this method to prefix group names with "x_woocommerce-".
	 *
	 * @param string $group_name The name of the group to retrieve.
	 * @return array Array with one item, where the key is the prefixed group and the value are all stats concatenated with a comma. If group not found, an empty array will be returned
	 */
	public function get_group_query_args( $group_name ) {
		$stats = $this->get_current_stats();
		if ( isset( $stats[ $group_name ] ) && ! empty( $stats[ $group_name ] ) ) {
			return array( "x_woocommerce-{$group_name}" => implode( ',', $stats[ $group_name ] ) );
		}
		return array();
	}

	/**
	 * Outputs the tracking pixels for the current stats and empty the stored stats from the object
	 *
	 * @return void
	 */
	public function do_stats() {
		if ( ! \WC_Site_Tracking::is_tracking_enabled() ) {
			return;
		}

		parent::do_stats();
	}

	/**
	 * Runs stats code for a one-off, server-side.
	 *
	 * @param string $url string The URL to be pinged. Should include `x_woocommerce-{$group}={$stats}` or whatever we want to store.
	 *
	 * @return bool If it worked.
	 */
	public function do_server_side_stat( $url ) {
		if ( ! \WC_Site_Tracking::is_tracking_enabled() ) {
			return false;
		}

		return parent::do_server_side_stat( $url );
	}
}
