/**
* generate single date objects for one cycle and one semester, existing dates are merged in
*
* @param string cycle id
* @param int timestamp of semester start
* @param int timestamp of semester end
* @param int alternative timestamp to start from
* @param int correction calculation, if the semester does not start on monday (number of days?)
* @return array returns an array of two arrays of SingleDate objects: 'dates' => all new and surviving dates, 'dates_to_delete' => obsolete dates
*/
public function createSemesterTerminSlots($sem_begin, $sem_end, $startAfterTimeStamp, $corr)
{
$dates = array();
$dates_to_delete = array();
// The currently existing singledates for the by metadate_id denoted regular time-entry
//$existingSingleDates =& $this->cycles[$metadate_id]->getSingleDates();
$existingSingleDates =& $this->getAllDates();
$start_woche = $this->week_offset;
$end_woche = $this->end_offset;
$turnus = $this->cycle;
// HolidayData is used to decide wether a date is during a holiday an should be created as an ex_termin.
// Additionally, it is used to show which type of holiday we've got.
$holiday = new HolidayData();
// This variable is used to check if a given singledate shall be created in a bi-weekly seminar.
if ($start_woche == -1) {
$start_woche = 0;
}
$week = 0;
// get the first presence date after sem_begin
$day_of_week = date('l', strtotime('Sunday + ' . $this->weekday . ' days'));
$stamp = strtotime('this ' . $day_of_week, $sem_begin);
if ($end_woche) {
$end_woche -= 1;
if ($end_woche < 0) {
$end_woche = 0;
}
$sem_end = strtotime(sprintf('+%u weeks %s', $end_woche, strftime('%d.%m.%Y', $stamp)));
}
$start = explode(':', $this->start_time);
$start_time = mktime((int) $start[0], (int) $start[1], 0, date("n", $stamp), date("j", $stamp), date("Y", $stamp));
// Year
$end = explode(':', $this->end_time);
$end_time = mktime((int) $end[0], (int) $end[1], 0, date("n", $stamp), date("j", $stamp), date("Y", $stamp));
// Year
// loop through all possible singledates for this regular time-entry
do {
// if dateExists is true, the singledate will not be created. Default is of course to create the singledate
$dateExists = false;
// do not create singledates, if they are earlier then the chosen start-week
if ($start_woche > $week) {
$dateExists = true;
}
// bi-weekly check
if ($turnus > 0 && $week - $start_woche > 0 && ($week - $start_woche) % ($turnus + 1)) {
$dateExists = true;
}
/*
* We only create dates, which do not already exist, so we do not overwrite existing dates.
*
* Additionally, we delete singledates which are not needed any more (bi-weekly, changed start-week, etc.)
*/
$date_values['range_id'] = $this->seminar_id;
$date_values['autor_id'] = $GLOBALS['user']->id;
$date_values['metadate_id'] = $this->metadate_id;
foreach ($existingSingleDates as $key => $val) {
// take only the singledate into account, that maps the current timepoint
if ($start_time > $startAfterTimeStamp && $val->date == $start_time && $val->end_time == $end_time) {
// bi-weekly check
if ($turnus > 0 && $week - $start_woche > 0 && ($week - $start_woche) % ($turnus + 1)) {
$dates_to_delete[$key] = $val;
unset($existingSingleDates[$key]);
}
// delete singledates if they are earlier than the chosen start-week
if ($start_woche > $week) {
$dates_to_delete[$key] = $val;
unset($existingSingleDates[$key]);
}
$dateExists = true;
if (isset($existingSingleDates[$key])) {
$dates[$key] = $val;
}
}
}
if ($start_time < $startAfterTimeStamp) {
$dateExists = true;
}
if (!$dateExists) {
$termin = new CourseDate();
$all_holiday = $holiday->getAllHolidays();
// fetch all Holidays
foreach ($all_holiday as $val2) {
if ($val2["beginn"] <= $start_time && $start_time <= $val2["ende"]) {
$termin = new CourseExDate();
break;
}
}
//check for calculatable holidays
if ($termin instanceof CourseDate) {
$holy_type = SemesterHoliday::isHoliday($start_time, false);
if ($holy_type["col"] == 3) {
$termin = new CourseExDate();
}
}
$date_values['date'] = $start_time;
$date_values['end_time'] = $end_time;
$date_values['date_type'] = 1;
$termin->setData($date_values);
$dates[] = $termin;
}
//inc the week, create timestamps for the next singledate
$start_time = strtotime('+1 week', $start_time);
$end_time = strtotime('+1 week', $end_time);
$week++;
} while ($end_time < $sem_end);
return array('dates' => $dates, 'dates_to_delete' => $dates_to_delete);
}
/**
* Deletes a date.
*
* @param String $termin_id Id of the date
* @param String $sub_cmd Sub command to be executed
* @param String $cycle_id Id of the associated cycle
*/
private function deleteDate($termin_id, $sub_cmd, $cycle_id)
{
//cancel cycledate entry
if ($sub_cmd === 'cancel') {
$termin = CourseDate::find($termin_id);
$seminar_id = $termin->range_id;
$room = $termin->getRoom();
$termin->cancelDate();
log_event('SEM_DELETE_SINGLEDATE', $termin_id, $seminar_id, 'Cycle_id: ' . $cycle_id);
//delete singledate entry
} else {
if ($sub_cmd === 'delete') {
$termin = CourseDate::find($termin_id) ?: CourseExDate::find($termin_id);
$seminar_id = $termin->range_id;
$termin_room = $termin->getRoom();
$termin_date = $termin->getFullname();
if ($termin->delete()) {
log_event("SEM_DELETE_SINGLEDATE", $termin_id, $seminar_id, 'appointment cancelled');
if (Request::get('approveDelete')) {
if (Config::get()->RESOURCES_ENABLE_EXPERT_SCHEDULE_VIEW) {
$this->course->createMessage(sprintf(_('Sie haben den Termin %s gelöscht, dem ein Thema zugeorndet war.' . ' Sie können das Thema in der %sExpertenansicht des Ablaufplans%s einem anderen Termin (z.B. einem Ausweichtermin) zuordnen.'), $termin_date, '<a href="' . URLHelper::getLink('themen.php?cmd=changeViewMode&newFilter=expert') . '">', '</a>'));
} elseif ($room) {
$this->course->createMessage(sprintf(_('Der Termin %s wurde gelöscht! Die Buchung für den Raum %s wurde gelöscht.'), $termin_date, $termin_room));
} else {
$this->course->createMessage(sprintf(_('Der Termin %s wurde gelöscht!'), $termin_date));
}
} else {
// no approval needed, delete unquestioned
$this->course->createMessage(sprintf(_('Der Termin %s wurde gelöscht!'), $termin_date));
}
}
}
}
}
/**
* Converts a CourseDate Entry to a CourseExDate Entry
* returns instance of the new CourseExDate or NULL
*
* @return Object CourseExDate
*/
public function cancelDate()
{
$date = $this->toArray();
unset($date['termin_id']);
$ex_date = new CourseExDate();
$ex_date->setData($date);
if ($ex_date->store()) {
$this->delete();
return $ex_date;
}
return null;
}
