/**
* Returns the date to use to calculate the ValidUntil if any
*
* @param string $fieldSource Source for field from round
* @param string $fieldName Name from round
* @param int $prevRoundId Id from round
* @param \Gems_Tracker_Token $token
* @param \Gems_Tracker_RespondentTrack $respTrack
* @param \MUtil_Date $validFrom The calculated new valid from value
* @return \MUtil_Date date time or null
*/
protected function getValidUntilDate($fieldSource, $fieldName, $prevRoundId, \Gems_Tracker_Token $token, \Gems_Tracker_RespondentTrack $respTrack, $validFrom)
{
$date = null;
switch ($fieldSource) {
case parent::ANSWER_TABLE:
if ($prev = $respTrack->getActiveRoundToken($prevRoundId, $token)) {
$date = $prev->getAnswerDateTime($fieldName);
}
break;
case parent::TOKEN_TABLE:
if ($prev = $respTrack->getActiveRoundToken($prevRoundId, $token)) {
if (false !== $validFrom && $prev === $token && $fieldName == 'gto_valid_from') {
$date = $validFrom;
} else {
$date = $prev->getDateTime($fieldName);
}
}
break;
case parent::APPOINTMENT_TABLE:
case parent::RESPONDENT_TRACK_TABLE:
$date = $respTrack->getDate($fieldName);
break;
}
return $date;
}
