<?php

namespace Pusher;

class PusherInstance {

    private static $instance = null;
    private static $app_id = '';
    private static $secret = '';
    private static $api_key = '';

    /**
     * Get the pusher singleton instance.
     *
     * @return Pusher
     */
    public static function get_pusher() {
        if (self::$instance !== null) {
            return self::$instance;
        }

        self::$instance = new Pusher(
                self::$api_key, self::$secret, self::$app_id
        );

        return self::$instance;
    }

}
