<?php
/**
 * @name		Slideshow CK
 * @copyright	Copyright (C) 2019. All rights reserved.
 * @license		GNU General Public License version 2 or later; see LICENSE.txt
 * @author		Cedric Keiflin - https://www.template-creator.com - https://www.joomlack.fr
 */

// No direct access
defined('_JEXEC') or die;

/**
 * Helper Class.
 */
class SlideshowckHelpersourceGoogle {

	private static $params;

	/**
	 * Static variable used to determin whether the plugin is running or not
	 * @var boolean
	 */
	public static $running;

	public static function getItems(&$params) {
		self::$params = $params;

		$url = $params->get('google_album_url', '', 'raw');
		$url = htmlspecialchars_decode($url);
		
		if (! $url) {
			\Joomla\CMS\Language\Text::_('SLIDESHOWCK_GOOGLE_EMPTY_URL');
			return false;
		}

		// setup cache to speedup the page load
		$timeInterval = $params->get('google_timeinterval', '1', 'int');
		if ($timeInterval < 1) $timeInterval = 1;
		$timeInterval = $timeInterval * 60;

		$cache = \Joomla\CMS\Factory::getCache('mod_slideshowck.google', '');
		$cache->setCaching(true);
		$key = $url;
		$cacheContent = $cache->get($key);
		$dev = false;
		
		// set timer to get the new data from the source
		self::$running = true;
		$lastRun = (int) $cache->get($key . '.time', 0);

		$currentTime = time();
		$numberMinutes = ($currentTime - $lastRun) / 60;

		if (! empty($cacheContent) && $numberMinutes < $timeInterval && $dev !== true)
		{
			$items = $cacheContent;
		} else {

			if (ini_get('allow_url_fopen') && function_exists('file_get_contents')) {  
				$response = file_get_contents($url);  
			}
			// look for curl
			if ($response == '' && extension_loaded('curl')) {
				$ch = curl_init();  
				$timeout = 30;  
				curl_setopt($ch, CURLOPT_URL, $url);  
				curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
				curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
				curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
				curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
				curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);  
				$response = curl_exec($ch);  
				curl_close($ch);  
			}
			if ( $response ) {
				preg_match_all('@\["AF1Q.*?",\["(.*?)"\,@', $response, $urls);
				if(isset($urls[1])) $photos = $urls[1];
			}

			if(isset($urls[1])) {
				$photos = $urls[1];
			} else {
				\Joomla\CMS\Language\Text::_('SLIDESHOWCK_GOOGLE_NO_GOOGLE_PHOTO');
				return;
			}

			$items = Array();
			$i = 0;
			foreach ($photos as & $photo) {
				if (strpos($photo, 'https') !== 0) continue;
				$item = SlideshowckHelper::initItem();

				$item->image = $photo;
				if ($params->get('linkautoimage', '0') === '1') $item->link = $photo . '=s2500';

				$items[$i] = $item;
				$i++;
			}

			$cache->store($items, $key);
			$cache->store($currentTime, $key . '.time');
		}

		return $items;
	}
}