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<?php
namespace Studip\Calendar;
class Helper
{
/**
* Retrieves the time slot duration in the calendar for a specified calendar type
* and either the current user or a specific user.
*
* @param string $calendar_type The calendar type for which to retrieve the slot duration.
* Valid values: 'week', 'day', 'week_group' (week group calendar), 'week_day' (day group calendar).
* Defaults to 'week'.
* @param string $user_id The user for which to retrieve the slot duration. Defaults to an
* empty string which then in turn means the current users slot duration is retrieved.
*
* @return string The slot duration as a time string in the form HH:MM:SS.
*/
public static function getCalendarSlotDuration(string $calendar_type = 'week', string $user_id = '') : string
{
$default_slot_duration = '00:30:00';
$user_config = new \UserConfig($user_id ?: $GLOBALS['user']->id);
$calendar_settings = $user_config->CALENDAR_SETTINGS;
if (
$calendar_type === 'week'
&& !empty($calendar_settings['step_week'])
) {
$step_week = (int) $calendar_settings['step_week'];
$hours = floor($step_week / 3600);
$minutes = round(($step_week - $hours * 3600) / 60);
return sprintf('%1$02u:%2$02u:00', $hours, $minutes);
} elseif (
$calendar_type === 'day'
&& !empty($calendar_settings['step_day'])
) {
$step_day = (int) $calendar_settings['step_day'];
$hours = floor($step_day / 3600);
$minutes = round(($step_day - $hours * 3600) / 60);
return sprintf('%1$02u:%2$02u:00', $hours, $minutes);
} elseif (
$calendar_type === 'week_group'
&& !empty($calendar_settings['step_week_group'])
) {
$step_week = (int) $calendar_settings['step_week_group'];
$hours = floor($step_week / 3600);
$minutes = round(($step_week - $hours * 3600) / 60);
return sprintf('%1$02u:%2$02u:00', $hours, $minutes);
} elseif (
$calendar_type === 'day_group'
&& !empty($calendar_settings['step_day_group'])
) {
$step_day = (int) $calendar_settings['step_day_group'];
$hours = floor($step_day / 3600);
$minutes = round(($step_day - $hours * 3600) / 60);
return sprintf('%1$02u:%2$02u:00', $hours, $minutes);
}
// An unknown slot type or no appropriate match before:
// Return the default duration.
return $default_slot_duration;
}
/**
* Retrieves the default calendar date by various methods.
*
* @return \DateTime The default date for the calendar.
* This defaults to the current date if no other date
* can be retrieved.
*/
public static function getDefaultCalendarDate() : \DateTime
{
$default_date = new \DateTime();
if (\Request::submitted('date') || \Request::submitted('defaultDate')) {
$parameter_name = 'date';
if (\Request::submitted('defaultDate')) {
$parameter_name = 'defaultDate';
}
$date = \Request::getDateTime($parameter_name, 'Y-m-d');
if ($date instanceof \DateTime) {
$default_date = $date;
//Update the session value:
$_SESSION['calendar_date'] = $default_date->format('Y-m-d');
}
} elseif (\Request::submitted('semester_id')) {
//A semester-ID is set, but no specific date that would override it.
//Use the first lecture week of the semester as default date.
$semester_id = \Request::option('semester_id');
$semester = \Semester::find($semester_id);
if ($semester) {
$default_date->setTimestamp($semester->vorles_beginn);
//Update the session value:
$_SESSION['calendar_date'] = $default_date->format('Y-m-d');
}
} elseif (!empty($_SESSION['calendar_date'])) {
$date = \DateTime::createFromFormat(
'Y-m-d',
$_SESSION['calendar_date'],
$default_date->getTimezone()
);
if ($date instanceof \DateTime) {
$default_date = $date;
}
}
$default_date->setTime(0,0,0);
return $default_date;
}
}
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