<?php
/**
 * 2007-2021 ETS-Soft
 *
 * NOTICE OF LICENSE
 *
 * This file is not open source! Each license that you purchased is only available for 1 wesite only.
 * If you want to use this file on more websites (or projects), you need to purchase additional licenses.
 * You are not allowed to redistribute, resell, lease, license, sub-license or offer our resources to any third party.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
 * versions in the future. If you wish to customize PrestaShop for your
 * needs please contact us for extra customization service at an affordable price
 *
 * @author ETS-Soft <etssoft.jsc@gmail.com>
 * @copyright  2007-2021 ETS-Soft
 * @license    Valid for 1 website (or project) for each purchase of license
 *  International Registered Trademark & Property of ETS-Soft
 */

class ETS_CFU_Integration
{
    private static $instance;
    private $services = array();
    private $categories = array();

    private function __construct()
    {
    }

    public static function get_instance()
    {
        if (empty(self::$instance)) {
            self::$instance = new self;
        }
        return self::$instance;
    }

    public function add_service($name, ETS_CFU_Service $service)
    {
        $name = ets_cfu_sanitize_key($name);
        if (empty($name) || isset($this->services[$name])) {
            return false;
        }
        $this->services[$name] = $service;
    }

    public function add_category($name, $title)
    {
        $name = ets_cfu_sanitize_key($name);
        if (empty($name) || isset($this->categories[$name])) {
            return false;
        }
        $this->categories[$name] = $title;
    }

    public function get_service($name)
    {
        if ($this->service_exists($name)) {
            return $this->services[$name];
        } else {
            return false;
        }
    }

    public function service_exists($name = '')
    {
        if ('' == $name) {
            return (bool)count($this->services);
        } else {
            return isset($this->services[$name]);
        }
    }
}

abstract class ETS_CFU_Service
{
    abstract public function get_title();

    abstract public function is_active();

    public function get_categories()
    {
        return array();
    }

    public function icon()
    {
        return '';
    }

    public function link()
    {
        return '';
    }

    public function load($action = '')
    {
        unset($action);
    }

    public function display($action = '')
    {
        unset($action);
    }

    public function admin_notice($message = '')
    {
        unset($message);
    }
}