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<?php
/**
* TimedAdmission.class.php
*
* Specifies a time frame for course admission.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* @author Thomas Hackl <thomas.hackl@uni-passau.de>
* @license http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
* @category Stud.IP
*/
class TimedAdmission extends AdmissionRule
{
// --- ATTRIBUTES ---
/**
* End of course admission.
*/
public $endTime = 0;
/**
* Start of course admission.
*/
public $startTime = 0;
// --- OPERATIONS ---
/**
* Standard constructor
*
* @param String ruleId
*/
public function __construct($ruleId='', $courseSetId = '')
{
parent::__construct($ruleId, $courseSetId);
$this->default_message = _('Sie befinden sich nicht innerhalb des Anmeldezeitraums.');
if ($ruleId) {
$this->load();
} else {
$this->id = $this->generateId('timedadmissions');
}
}
/**
* Deletes the admission rule and all associated data.
*/
public function delete() {
parent::delete();
// Delete rule data.
$stmt = DBManager::get()->prepare("DELETE FROM `timedadmissions`
WHERE `rule_id`=?");
$stmt->execute([$this->id]);
}
/**
* Gets some text that describes what this AdmissionRule (or respective
* subclass) does.
*/
public static function getDescription() {
return _("Anmelderegeln dieses Typs legen ein Zeitfenster fest, in ".
"dem die Anmeldung zu Veranstaltungen möglich ist. Es kann auch ".
"nur ein Start- oder Endzeitpunkt angegeben werden.");
}
/**
* Gets the end of course admission.
*
* @return int
*/
public function getEndTime()
{
return $this->endTime;
}
/**
* Return this rule's name.
*/
public static function getName() {
return _("Zeitgesteuerte Anmeldung");
}
/**
* Gets the start of course admission.
*
* @return int
*/
public function getStartTime()
{
return $this->startTime;
}
/**
* Gets the template that provides a configuration GUI for this rule.
*
* @return String
*/
public function getTemplate() {
$factory = new Flexi_TemplateFactory(dirname(__FILE__).'/templates/');
// Open specific template for this rule and insert base template.
$tpl = $factory->open('configure');
$tpl->set_attribute('rule', $this);
return $tpl->render();
}
/**
* Helper function for loading rule definition from database.
*/
public function load() {
// Load data.
$stmt = DBManager::get()->prepare("SELECT *
FROM `timedadmissions` WHERE `rule_id`=? LIMIT 1");
$stmt->execute([$this->id]);
if ($current = $stmt->fetch(PDO::FETCH_ASSOC)) {
$this->message = $current['message'];
$this->startTime = $current['start_time'];
$this->endTime = $current['end_time'];
}
}
/**
* Is admission allowed according to the defined time frame?
*
* @param String userId
* @param String courseId
* @return Array
*/
public function ruleApplies($userId, $courseId) {
$errors = [];
if (!$this->checkTimeFrame()) {
$errors[] = $this->getMessage();
}
return $errors;
}
/**
* Uses the given data to fill the object values. This can be used
* as a generic function for storing data if the concrete rule type
* isn't known in advance.
*
* @param Array $data
* @return AdmissionRule This object.
*/
public function setAllData($data) {
parent::setAllData($data);
if ($data['startdate']) {
$sdate = $data['startdate'];
$stime = $data['starttime'];
$parsed = date_parse($sdate.' '.$stime);
$timestamp = mktime($parsed['hour'], $parsed['minute'], 0, $parsed['month'], $parsed['day'], $parsed['year']);
$this->setStartTime($timestamp);
}
if ($data['enddate']) {
$edate = $data['enddate'];
$etime = $data['endtime'];
if (!$etime) {
$etime = '23:59';
}
$parsed = date_parse($edate.' '.$etime);
$timestamp = mktime($parsed['hour'], $parsed['minute'], 0, $parsed['month'], $parsed['day'], $parsed['year']);
$this->setEndTime($timestamp);
}
return $this;
}
/**
* Sets a new end timestamp for course admission.
*
* @param int newEndTime
* @return TimedAdmission
*/
public function setEndTime($newEndTime)
{
$this->endTime = $newEndTime;
return $this;
}
/**
* Sets a new start timestamp for course admission.
*
* @param int newStartTime
* @return TimedAdmission
*/
public function setStartTime($newStartTime)
{
$this->startTime = $newStartTime;
return $this;
}
/**
* Store rule definition to database.
*/
public function store() {
// Store data.
$stmt = DBManager::get()->prepare("INSERT INTO `timedadmissions`
(`rule_id`, `message`, `start_time`,
`end_time`, `mkdate`, `chdate`) VALUES (?, ?, ?, ?, ?, ?)
ON DUPLICATE KEY UPDATE `start_time`=VALUES(`start_time`),
`end_time`=VALUES(`end_time`),message=VALUES(message), `chdate`=VALUES(`chdate`)");
$stmt->execute([$this->id, $this->message, (int)$this->startTime,
(int)$this->endTime, time(), time()]);
}
/**
* A textual description of the current rule.
*
* @return String
*/
public function toString()
{
$factory = new Flexi_TemplateFactory(dirname(__FILE__).'/templates/');
$tpl = $factory->open('info');
$tpl->set_attribute('rule', $this);
return $tpl->render();
}
/**
* Validates if the given request data is sufficient to configure this rule
* (e.g. if required values are present).
*
* @param Array Request data
* @return Array Error messages.
*/
public function validate($data)
{
$errors = parent::validate($data);
if (!$data['startdate'] && !$data['enddate']) {
$errors[] = _('Bitte geben Sie entweder ein Start- oder Enddatum an.');
}
if ($data['startdate'] && $data['enddate'] && strtotime($data['enddate'] . ' ' . $data['endtime']) < strtotime($data['startdate']. ' ' . $data['starttime'])) {
$errors[] = _('Das Enddatum darf nicht vor dem Startdatum liegen.');
}
return $errors;
}
} /* end of class TimedAdmission */
?>
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