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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
* @category Piwik_Plugins
* @package Piwik_VisitFrequency
*/
use Piwik\Core\Piwik;
/**
* VisitFrequency API lets you access a list of metrics related to Returning Visitors.
* @package Piwik_VisitFrequency
*/
class Piwik_VisitFrequency_API
{
const RETURNING_VISITOR_SEGMENT = "visitorType==returning";
const COLUMN_SUFFIX = "_returning";
static private $instance = null;
static public function getInstance()
{
if (self::$instance == null) {
self::$instance = new self;
}
return self::$instance;
}
public function get($idSite, $period, $date, $segment = false, $columns = false)
{
$segment = $this->appendReturningVisitorSegment($segment);
$this->unprefixColumns($columns);
$params = array(
'idSite' => $idSite,
'period' => $period,
'date' => $date,
'segment' => $segment,
'columns' => implode(',', $columns),
'format' => 'original',
'serialize' => 0 // tests set this to 1
);
$table = Piwik_API_Request::processRequest('VisitsSummary.get', $params);
$this->prefixColumns($table, $period);
return $table;
}
protected function appendReturningVisitorSegment($segment)
{
if (empty($segment)) {
$segment = '';
} else {
$segment .= Piwik_SegmentExpression::AND_DELIMITER;
}
$segment .= self::RETURNING_VISITOR_SEGMENT;
return $segment;
}
protected function unprefixColumns(&$columns)
{
$columns = Piwik::getArrayFromApiParameter($columns);
foreach ($columns as &$column) {
$column = str_replace(self::COLUMN_SUFFIX, "", $column);
}
}
protected function prefixColumns($table, $period)
{
$rename = array();
foreach (Piwik_VisitsSummary_API::getInstance()->getColumns($period) as $oldColumn) {
$rename[$oldColumn] = $oldColumn . self::COLUMN_SUFFIX;
}
$table->filter('ReplaceColumnNames', array($rename));
}
}
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