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<?php
class GoogleAnalyticsQuery implements AnalyticsQuery
{
public function trackingParameters($emailFormat, $messageData)
{
return array(
'utm_source' => $messageData['utm_source'],
'utm_medium' => $messageData['utm_medium'],
'utm_campaign' => $messageData['utm_campaign'],
'utm_content' => $emailFormat,
);
}
public function editableParameters($messageData)
{
return array(
'utm_source' => 'phpList',
'utm_medium' => 'email',
'utm_campaign' => $messageData['subject'],
);
}
public function prefix()
{
return 'utm_';
}
}
class MatomoAnalyticsQuery implements AnalyticsQuery
{
public function trackingParameters($emailFormat, $messageData)
{
return array(
'pk_source' => $messageData['pk_source'],
'pk_medium' => $messageData['pk_medium'],
'pk_campaign' => $messageData['pk_campaign'],
'pk_content' => $emailFormat,
);
}
public function editableParameters($messageData)
{
return array(
'pk_source' => 'phpList',
'pk_medium' => 'email',
'pk_campaign' => $messageData['subject'],
);
}
public function prefix()
{
return 'pk_';
}
}
/**
* Return an instance of a class that will provide the parameters for an analytic tracker.
*
* @return AnalyticsQuery class instance
*/
function getAnalyticsQuery()
{
global $analyticsqueryplugin;
$config = getConfig('analytic_tracker');
if ($config == 'plugin' && $analyticsqueryplugin) {
return $analyticsqueryplugin;
}
return $config == 'matomo'
? new MatomoAnalyticsQuery()
: new GoogleAnalyticsQuery();
}
/**
* Add analytic query parameters to the URL also removing any existing values.
*
* @param string $url
* @param array $trackingParameters query parameters as key => value
* @param string $prefix tracking parameter prefix
*
* @return string
*/
function addAnalyticsTracking($url, $trackingParameters, $prefix)
{
$position = strpos($url, '#');
if ($position !== false) {
$baseUrl = substr($url, 0, $position);
$fragment = substr($url, $position);
} else {
$baseUrl = $url;
$fragment = '';
}
if (strpos($baseUrl, $prefix) !== false) {
// Take off existing tracking code. The regex can leave a trailing ? or & which needs to be removed.
$regex = sprintf('/%s.+?=[^&]+(&|$)/', $prefix);
$baseUrl = rtrim(preg_replace($regex, '', $baseUrl), '?&');
}
// re-construct the URL but exclude any empty parameters
$trackingcode = http_build_query(array_filter($trackingParameters));
$separator = strpos($baseUrl, '?') ? '&' : '?';
return $baseUrl.$separator.$trackingcode.$fragment;
}