/**
* Returns an array describing what data would be purged if both log data & report
* purging is invoked.
*
* The returned array maps table names with the number of rows that will be deleted.
* If the table name is mapped with -1, the table will be dropped.
*
* @param array $settings The config options to use in the estimate. If null, the real
* options are used.
* @return array
*/
public static function getPurgeEstimate($settings = null)
{
if (is_null($settings)) {
$settings = self::getPurgeDataSettings();
}
$result = array();
if ($settings['delete_logs_enable']) {
$logDataPurger = Piwik_PrivacyManager_LogDataPurger::make($settings);
$result = array_merge($result, $logDataPurger->getPurgeEstimate());
}
if ($settings['delete_reports_enable']) {
$reportsPurger = Piwik_PrivacyManager_ReportsPurger::make($settings, self::getAllMetricsToKeep());
$result = array_merge($result, $reportsPurger->getPurgeEstimate());
}
return $result;
}
