<?php
/**
* Since 2013 Ovidiu Cimpean.
*
* Ovidiu Cimpean - Newsletter Pro © All rights reserved.
*
* DISCLAIMER
*
* Do not edit, modify or copy this file.
* If you wish to customize it, contact us at addons4prestashop@gmail.com.
*
* @author    Ovidiu Cimpean <addons4prestashop@gmail.com>
* @copyright Since 2013 Ovidiu Cimpean
* @license   Do not edit, modify or copy this file
*
* @version   Release: 4
*/

class NewsletterProShutdown
{
    private static $call_registred = false;

    public static $callbacks = [];

    const KEY_CALLBACK = 0;

    const KEY_FUNCTION_NAME = 1;

    const KEY_FUNCTION_ARGS = 3;

    /**
     * @param  Don't use exit in the registred shut down functions
     */
    public static function register($array, $args = [])
    {
        if (!is_callable($array)) {
            throw new InvalidArgumentException('Invalid method arguments.');
        }

        $callback = $array[0];
        $function_name = $array[1];

        $key = self::getKey($array);

        self::$callbacks[$key] = [
            self::KEY_CALLBACK => $callback,
            self::KEY_FUNCTION_NAME => $function_name,
            self::KEY_FUNCTION_ARGS => $args,
        ];

        if (!self::$call_registred) {
            register_shutdown_function(['NewsletterProShutdown', 'call']);
        }
    }

    public static function unregister($array)
    {
        $key = self::getKey($array);

        if (isset(self::$callbacks[$key])) {
            unset(self::$callbacks[$key]);
        }
    }

    private static function getKey($array)
    {
        if (!is_callable($array)) {
            throw new InvalidArgumentException('Invalid method arguments.');
        }

        $callback = $array[0];
        $function_name = $array[1];

        $key = get_class($callback).'.'.$function_name;

        return $key;
    }

    public static function call()
    {
        if (count(self::$callbacks)) {
            foreach (self::$callbacks as $key => $params) {
                call_user_func_array([$params[self::KEY_CALLBACK], $params[self::KEY_FUNCTION_NAME]], $params[self::KEY_FUNCTION_ARGS]);
                unset(self::$callbacks[$key]);
            }
        }
    }
}