<?php

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namespace Nextend\SmartSlider3\Slider\Cache;

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use Nextend\Framework\Cache\Manifest;

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use Nextend\Framework\Platform\Platform;

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use Nextend\Framework\Plugin;

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use Nextend\SmartSlider3\Application\Helper\HelperSliderChanged;

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use Nextend\SmartSlider3\Application\Model\ModelGenerator;

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use Nextend\SmartSlider3\SmartSlider3Info;

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class CacheSlider extends Manifest {

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private $parameters = array();

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protected $_storageEngine = 'database';

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private $isExtended = false;

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public function __construct($cacheId, $parameters = array()) {

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parent::__construct($cacheId, false);

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$this->parameters = $parameters;

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}

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protected function decode($data) {

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return json_decode($data, true);

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}

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/**

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* @param $fileName

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* @param $hash

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* @param callback $callable

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*

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* @return bool

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*/

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public function makeCache($fileName, $hash, $callable) {

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$variations = 1;

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if ($this->exists($this->getManifestKey('variations'))) {

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$variations = intval($this->get($this->getManifestKey('variations')));

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}

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$fileName = $fileName . mt_rand(1, $variations);

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if ($this->exists($this->getManifestKey('data'))) {

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$data = json_decode($this->get($this->getManifestKey('data')), true);

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$fileName = $this->extendFileName($fileName, $data);

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} else {

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$this->clearCurrentGroup();

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}

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$output = parent::makeCache($fileName, $hash, $callable);

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return $output;

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}

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protected function createCacheFile($fileName, $hash, $content) {

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$this->set($this->getManifestKey('data'), json_encode($this->parameters['slider']->manifestData));

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$fileName = $this->extendFileName($fileName, $this->parameters['slider']->manifestData);

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return parent::createCacheFile($fileName, $hash, $content);

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}

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private function extendFileName($fileName, $manifestData) {

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if ($this->isExtended) {

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return $fileName;

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}

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$this->isExtended = true;

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$generators = $manifestData['generator'];

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if (count($generators)) {

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$generatorModel = new ModelGenerator($this->parameters['slider']);

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foreach ($generators as $generator) {

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list($group, $type, $params) = $generator;

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$generatorGroup = $generatorModel->getGeneratorGroup($group);

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if (!$generatorGroup) {

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echo esc_html(n2_('Slider error! Generator group not found: ') . $group);

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} else {

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$generatorSource = $generatorGroup->getSource($type);

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if (!$generatorSource) {

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echo esc_html(n2_('Slider error! Generator source not found: ') . $type);

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} else {

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$fileName .= call_user_func(array(

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$generatorSource,

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'cacheKey'

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), $params);

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}

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}

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}

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}

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return $fileName;

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}

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protected function isCacheValid(&$manifestData) {

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if (!isset($manifestData['version']) || $manifestData['version'] != SmartSlider3Info::$version) {

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return false;

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}

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$helper = new HelperSliderChanged($this->parameters['slider']);

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if ($helper->isSliderChanged($this->parameters['slider']->sliderId)) {

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$this->clearCurrentGroup();

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$helper->setSliderChanged($this->parameters['slider']->sliderId, 0);

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return false;

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}

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$time = Platform::getTimestamp();

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if ($manifestData['nextCacheRefresh'] < $time) {

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return false;

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}

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if (!isset($manifestData['currentPath']) || $manifestData['currentPath'] != md5(__FILE__)) {

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return false;

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}

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return true;

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}

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protected function addManifestData(&$manifestData) {

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$manifestData['nextCacheRefresh'] = Plugin::applyFilters('SSNextCacheRefresh', $this->parameters['slider']->getNextCacheRefresh(), array($this->parameters['slider']));

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$manifestData['currentPath'] = md5(__FILE__);

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$manifestData['version'] = SmartSlider3Info::$version;

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$variations = 1;

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$params = $this->parameters['slider']->params;

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if (!$params->get('randomize-cache', 0) && ($params->get('randomize', 0) || $params->get('randomizeFirst', 0))) {

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$variations = intval($params->get('variations', 5));

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if ($variations < 1) {

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$variations = 1;

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}

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}

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$this->set($this->getManifestKey('variations'), $variations);

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}

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}

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