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<?php |
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namespace DERHANSEN\SfEventMgt\Hooks; |
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/* |
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* This file is part of the Extension "sf_event_mgt" for TYPO3 CMS. |
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* |
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* For the full copyright and license information, please read the |
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* LICENSE.txt file that was distributed with this source code. |
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*/ |
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use TYPO3\CMS\Core\Database\ConnectionPool; |
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use TYPO3\CMS\Core\Database\Query\Restriction\EndTimeRestriction; |
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use TYPO3\CMS\Core\Database\Query\Restriction\StartTimeRestriction; |
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use TYPO3\CMS\Core\Utility\GeneralUtility; |
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use TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController; |
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/** |
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* PageCache class which implementes the TYPO3 Core hook: |
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* $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['tslib/class.tslib_fe.php']['get_cache_timeout'] |
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*/ |
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class PageCache |
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{ |
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/** |
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* Calculates the page cache timeout for configured pages with event records. Pages must be configured in TypoScript |
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* using cache.config (similar to starttime/endtime cache handling) |
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* |
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* Example: config.cache.3 = tx_sfeventmgt_domain_model_event:2 |
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* |
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* The cache for PID 3 will respect registration_startdate/registration_deadline of event record in PID 2 |
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* |
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* @param array $params |
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* @param TypoScriptFrontendController $pObj |
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* @return int|mixed |
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*/ |
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public function getCacheTimeout(array $params, TypoScriptFrontendController $pObj) |
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{ |
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$eventBasedCacheTimeout = $this->calculatePageCacheTimeout($pObj); |
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if ($eventBasedCacheTimeout === PHP_INT_MAX || $eventBasedCacheTimeout >= $params['cacheTimeout']) { |
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// Return previous calculated timeout, since event based cache timeout is either not determined or larger |
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return $params['cacheTimeout']; |
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} else { |
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return $eventBasedCacheTimeout; |
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} |
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} |
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/** |
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* Calculates page cache timeout according to the events with registration_startdate/registration_deadline |
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* on the page. |
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* |
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* Nearly similar to TypoScriptFrontendController::calculatePageCacheTimeout() |
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* |
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* @return int Page cache timeout or PHP_INT_MAX if cannot be determined |
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*/ |
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protected function calculatePageCacheTimeout(TypoScriptFrontendController $pObj) |
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{ |
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$result = PHP_INT_MAX; |
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$tablesToConsider = $this->getCurrentPageCacheConfiguration($pObj); |
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if (empty($tablesToConsider)) { |
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return $result; |
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} |
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$now = $GLOBALS['ACCESS_TIME']; |
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foreach ($tablesToConsider as $tableDef) { |
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$result = min($result, $this->getFirstTimeValueForEvent($tableDef, $now)); |
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} |
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return $result === PHP_INT_MAX ? PHP_INT_MAX : $result - $now + 1; |
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} |
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/** |
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* Nearly similar to TypoScriptFrontendController::getCurrentPageCacheConfiguration, but only returns |
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* entries that are relevant for sf_event_mgt |
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* |
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* @return array |
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*/ |
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protected function getCurrentPageCacheConfiguration(TypoScriptFrontendController $pObj): array |
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{ |
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$tables = ['tt_content:' . $pObj->id]; |
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if (isset($pObj->config['config']['cache.'][$pObj->id])) { |
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$cacheConfig = str_replace(':current', ':' . $pObj->id, $pObj->config['config']['cache.'][$pObj->id]); |
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$tables = array_merge($tables, GeneralUtility::trimExplode(',', $cacheConfig)); |
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} |
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if (isset($pObj->config['config']['cache.']['all'])) { |
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$cacheConfig = str_replace(':current', ':' . $pObj->id, $pObj->config['config']['cache.']['all']); |
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$tables = array_merge($tables, GeneralUtility::trimExplode(',', $cacheConfig)); |
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} |
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$tables = array_unique($tables); |
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$result = []; |
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foreach ($tables as $table) { |
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if (strpos($table, 'tx_sfeventmgt_domain_model_event') !== false) { |
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$result[] = $table; |
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} |
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} |
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return $result; |
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} |
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/** |
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* Nearly similar to TypoScriptFrontendController::getFirstTimeValueForRecord but only considers event fields |
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* registration_startdate and registration_deadline. |
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* |
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* @param string $tableDef Table definition (format tablename:pid) |
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* @param int $now "Now" time value |
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* @return int Value of the next registration_startdate/registration_deadline time or PHP_INT_MAX if not found |
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*/ |
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protected function getFirstTimeValueForEvent(string $tableDef, int $now): int |
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{ |
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$now = (int)$now; |
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$result = PHP_INT_MAX; |
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list($tableName, $pid) = GeneralUtility::trimExplode(':', $tableDef); |
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$queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class) |
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->getQueryBuilderForTable($tableName); |
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$queryBuilder->getRestrictions() |
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->removeByType(StartTimeRestriction::class) |
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->removeByType(EndTimeRestriction::class); |
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$timeFields = ['registration_startdate', 'registration_deadline']; |
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$timeConditions = $queryBuilder->expr()->orX(); |
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foreach ($timeFields as $field) { |
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$queryBuilder->addSelectLiteral( |
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'MIN(' |
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. 'CASE WHEN ' |
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. $queryBuilder->expr()->lte( |
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$field, |
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$queryBuilder->createNamedParameter($now, \PDO::PARAM_INT) |
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) |
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. ' THEN NULL ELSE ' . $queryBuilder->quoteIdentifier($field) . ' END' |
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. ') AS ' . $queryBuilder->quoteIdentifier($field) |
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); |
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$timeConditions->add( |
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$queryBuilder->expr()->gt( |
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$field, |
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$queryBuilder->createNamedParameter($now, \PDO::PARAM_INT) |
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) |
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); |
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} |
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// Only consider events where registration is enabled and that have not started yet. |
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// Also include PID and timeConditions |
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$row = $queryBuilder |
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->from($tableName) |
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->where( |
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$queryBuilder->expr()->eq( |
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'pid', |
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$queryBuilder->createNamedParameter($pid, \PDO::PARAM_INT) |
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), |
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$queryBuilder->expr()->eq( |
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'enable_registration', |
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$queryBuilder->createNamedParameter(1, \PDO::PARAM_INT) |
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), |
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$queryBuilder->expr()->gt( |
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'startdate', |
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$queryBuilder->createNamedParameter($now, \PDO::PARAM_INT) |
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), |
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$timeConditions |
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) |
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->execute() |
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->fetch(); |
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if ($row) { |
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foreach ($timeFields as $timeField) { |
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if ($row[$timeField] !== null && (int)$row[$timeField] > $now) { |
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$result = min($result, (int)$row[$timeField]); |
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} |
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} |
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} |
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return $result; |
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} |
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} |
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derhansen /
sf_event_mgt
