<?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 NewsletterProRSS
{
    public $version;

    public $iso_lang;

    public $link;

    public $template;

    public $context;

    public $xml;

    /**
     * Don't forget to:.
     *
     * include the files [our_modules.css, our_modules.js]
     * include the files for PrestaShop 1.5 [font-awesome.css, fonts]
     */
    public function __construct($link, $version, $iso_lang)
    {
        $this->context = Context::getContext();
        $this->version = $version;
        $this->iso_lang = $iso_lang;
        $this->link = $link;
    }

    public function setTemplate($filename)
    {
        if (!file_exists($filename)) {
            throw new Exception('The rss template not exists.');
        }

        $this->template = $filename;
    }

    public function getXML()
    {
        $rss = $this->link.sprintf('?version=%s&lang=%s', $this->version, $this->iso_lang);

        return @simplexml_load_file($rss);
    }

    public function render()
    {
        $output = '';

        if (!isset($this->template)) {
            throw new Exception('You need to set the template path before to render the template.');
        }

        $xml = $this->getXML();

        if (!$xml) {
            if (isset($this->context->controller)) {
                $output = $this->context->controller->module->l('Cannot connect to the RSS.');
            } else {
                $output = 'Cannot connect to the RSS.';
            }
        } else {
            $items = $xml->channel->item;
            // if the links don't match the prestashop website will redirect them to my prestashop accout
            $regex = '/^(http:\/\/|https:\/\/)?(www\.)?addons\.prestashop\.com/';
            $my_modules = 'http://addons.prestashop.com/en/2_community?contributor=236068';

            $replace_description = [];
            foreach ($items as $item) {
                if (!preg_match($regex, (string) $item->details)) {
                    $item->details = $my_modules;
                }

                if (!preg_match($regex, (string) $item->demo)) {
                    $item->demo = $my_modules;
                }

                if (!preg_match('/^(http:\/\/|https:\/\/)?(www\.)?youtube\.com/', (string) $item->video)) {
                    $item->video = $my_modules;
                }

                if (preg_match('/(?P<link>(http:\/\/|https:\/\/)?(\w+\.){1,}\w+)/', $item->description, $match)) {
                    $replace_description[] = $match['link'];
                }
            }

            $this->context->smarty->assign([
                'items' => $items,
                'display_version' => (int) $xml->channel->displayVersion,
                'display_rating' => (int) $xml->channel->displayRating,

                'display_details' => (int) $xml->channel->displayDetails,
                'display_video' => (int) $xml->channel->displayVideo,
                'display_demo' => (int) $xml->channel->displayDemo,

                'display_price' => (int) $xml->channel->displayPrice,
                'display_badge' => (int) $xml->channel->displayBadge,
                'display_new' => (int) $xml->channel->displayNew,
                'count_new' => $this->countNew($xml->channel),
            ]);

            $output = $this->context->smarty->fetch($this->template);

            // filter the undesired urls
            if (!empty($replace_description)) {
                $output = str_replace($replace_description, '', $output);
            }
        }

        return $output;
    }

    public function countNew($channel)
    {
        $count = 0;
        $items = $channel->item;
        $display_new = (int) $channel->displayNew;
        if ($display_new) {
            foreach ($items as $item) {
                if ((int) $item->displayNew) {
                    ++$count;
                }
            }
        }

        return $count;
    }
}