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<?php
class Page_Exams extends Page
{
var $action;
var $exams;
var $locations;
var $lectures;
protected function readLocations()
{
$tmp = Database::simpleQuery("select * from location;", []);
while ($loc = $tmp->fetch(PDO::FETCH_ASSOC)) {
$this->locations[] = $loc;
}
}
protected function readExams()
{
$tmp = Database::simpleQuery("select examid, starttime, endtime, GROUP_CONCAT(locationid) AS locationids,"
. " GROUP_CONCAT(locationname) AS locationnames from "
. "exams NATURAL JOIN exams_x_locations NATURAL JOIN location GROUP BY examid;", []);
while ($exam = $tmp->fetch(PDO::FETCH_ASSOC)) {
$this->exams[] = $exam;
}
}
protected function readLectures()
{
$tmp = Database::simpleQuery("select * from sat.lecture NATURAL JOIN sat.lecture_x_location");
while ($lecture = $tmp->fetch(PDO::FETCH_ASSOC)) {
$this->lectures[] = $lecture;
}
}
protected function makeItemsForVis()
{
$out = [];
/* foreach group also add an invisible item on top */
foreach ($this->locations as $l) {
$out[] = [ 'id' => 'spacer_' . $l['locationid'],
'group' => $l['locationid'],
'className' => 'spacer',
'start' => 0,
'content' => 'spacer',
'end' => 99999999999999,
'subgroup' => 0
];
}
$unique_ids = 1;
foreach ($this->exams as $e) {
foreach(explode(',', $e['locationids']) as $locationid) {
$out[] = [ 'id' => 'shadow_' . $unique_ids++,
'content' => '',
'start' => $e['starttime'],
'end' => $e['endtime'],
'type' => 'background',
'group' => $locationid,
];
}
}
/* add the lectures */
$i = 2;
foreach ($this->lectures as $l) {
$out[] = [
'id' => $l['lectureid'],
'content' => $l['displayname'],
'start' => date(DATE_ISO8601, $l['starttime']),
'end' => date(DATE_ISO8601, $l['endtime']),
'group' => $l['locationid'],
'subgroup' => $i++
];
}
return json_encode($out);
}
protected function makeGroupsForVis()
{
$out = [];
foreach ($this->locations as $l) {
$out[] = [
'id' => $l['locationid'],
'content' => $l['locationname']
];
}
return json_encode($out);
}
protected function doPreprocess()
{
User::load();
$req_action = Request::get('action', 'show');
if (in_array($req_action, ['show', 'add', 'delete'])) {
$this->action = $req_action;
}
if ($this->action === 'show') {
$this->readExams();
$this->readLocations();
$this->readLectures();
} elseif ($this->action === 'add') {
$this->readLocations();
if (Request::isPost()) {
/* process form-data */
$locationids = Request::post('locations', [], "ARRAY");
$starttime = Request::post('starttime_date') . " " . Request::post('starttime_time');
$endtime = Request::post('endtime_date') . " " . Request::post('endtime_time');
$description = Request::post('description');
$res = Database::exec("INSERT INTO exams(starttime, endtime, description) VALUES(:starttime, :endtime, :description);",
compact('starttime', 'endtime', 'description'));
$exam_id = Database::lastInsertId();
foreach ($locationids as $lid) {
$res = $res && Database::exec("INSERT INTO exams_x_locations(examid, locationid) VALUES(:exam_id, :lid)", compact('exam_id', 'lid'));
}
if ($res === false) {
Message::addError('exam-not-added');
} else {
Message::addInfo('exam-added-success');
}
Util::redirect('?do=exams');
}
} elseif ($this->action === 'delete') {
if (!Request::isPost()) { die('delete only works with a post request'); }
$examid = Request::post('examid');
$res = Database::exec("DELETE FROM exams WHERE examid = :examid;", compact('examid'));
$res = Database::exec("DELETE FROM exams_x_locations WHERE examid = :examid;", compact('examid'));
if ($res === false) {
Message::addError('exam-not-deleted-error');
} else {
Message::addInfo('exam-deleted-success');
}
Util::redirect('?do=exams');
} else {
Util::traceError("unknown action");
}
}
protected function doRender()
{
// Render::setTitle(Dictionary::translate('lang_exams'));
//Render::addTemplate('page-exams', $_POST);
if ($this->action === "show") {
Render::setTitle("All Exams");
Render::addTemplate('page-exams',
[ 'exams' => $this->exams,
'exams_json' => $this->makeItemsForVis(),
'rooms_json' => $this->makeGroupsForVis(),
'vis_begin' => date('Y-m-d'),
'vis_end' => date('Y-m-d', strtotime("+2 day"))
]);
} elseif ($this->action === "add") {
Render::setTitle("Add Exam");
Render::addTemplate('page-add-exam', ['locations' => $this->locations]);
}
// Render::output('hi');
}
}
|
