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<?php
/**
* CoursesetModel - Database stuff for course set management
*
* 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
* @since 3.0
*/
class CoursesetModel
{
/**
* Fetches courses at the given institutes.
* @param Array $instituteIds IDs of institutes to check
* @param String $coursesetId Get also courses assigned to the given courseset
* @param Array $selectedCourses Courses that have already been selected manually
* @param String $semester_id Get only courses belonging to the given semester
* @param mixed $filter Fetch only courses fulfilling a search string or of a certain lecturer?
*
* @return Array Found courses.
*/
public static function getInstCourses($instituteIds, $coursesetId = '', $selectedCourses = [], $semester_id = null, $filter = false)
{
// Get semester dates for course sorting.
$currentSemester = $semester_id ? Semester::find($semester_id) : Semester::findCurrent();
$db = DBManager::get();
$courses = [];
// Exclude studygroup and grouping parent sem types from search.
$excludeTypes = array_merge(
studygroup_sem_types() ?: [''],
SemType::getGroupingSemTypes() ?: ['']
);
if ($filter === true) {
$query = "SELECT su.`Seminar_id`
FROM `seminar_user` su
INNER JOIN `seminare` s USING (`Seminar_id`)
LEFT JOIN semester_courses ON (semester_courses.course_id = s.Seminar_id)
WHERE s.status NOT IN(?)
AND (semester_courses.semester_id IS NULL OR semester_courses.semester_id = ?)
AND su.`user_id` = ?
GROUP BY su.`Seminar_id` ";
$parameters = [
$excludeTypes,
$currentSemester->id,
$GLOBALS['user']->id
];
if (Config::get()->DEPUTIES_ENABLE) {
$query .= " UNION ";
$query .= "SELECT s.`Seminar_id`
FROM `seminare` s
INNER JOIN `deputies` d ON (s.`Seminar_id`=d.`range_id`)
LEFT JOIN semester_courses ON (semester_courses.course_id = s.Seminar_id)
WHERE (semester_courses.semester_id IS NULL OR semester_courses.semester_id = ?)
AND d.`user_id` = ?
GROUP BY s.`Seminar_id`
";
$parameters = array_merge(
$parameters,
[$currentSemester->id, $GLOBALS['user']->id]
);
}
$courses = $db->fetchFirst($query, $parameters);
} elseif (mb_strlen($filter) > 1) {
if (Config::get()->ALLOW_ADMIN_RELATED_INST) {
$sem_inst = 'si';
} else {
$sem_inst = 's';
}
$query = "SELECT DISTINCT s.seminar_id
FROM seminare s
INNER JOIN seminar_user su
ON s.seminar_id = su.seminar_id AND su.status = 'dozent'
LEFT JOIN seminar_inst si ON si.seminar_id = s.Seminar_id
LEFT JOIN semester_courses ON (semester_courses.course_id = s.Seminar_id)
INNER JOIN auth_user_md5 aum USING (user_id)
WHERE s.status NOT IN (:exclude_types)
AND (semester_courses.semester_id IS NULL OR semester_courses.semester_id = :semester_id)
AND $sem_inst.Institut_id IN (:institutes)
AND (
s.name LIKE :filter
OR s.Veranstaltungsnummer LIKE :filter
OR Nachname LIKE :filter
)";
$courses = $db->fetchFirst($query, [
'exclude_types' => $excludeTypes,
'semester_id' => $currentSemester->id,
'institutes' => $instituteIds,
'filter' => '%' . $filter .'%',
]);
}
//filter courses from other sets out
if (count($courses)) {
$query = "SELECT DISTINCT seminar_id
FROM seminar_courseset
LEFT JOIN courseset_rule USING (set_id)
WHERE type NOT IN ('LockedAdmission','PasswordAdmission')
AND seminar_id IN (?)";
$found = DBManager::get()->fetchFirst($query, [$courses]);
$courses = array_diff($courses, $found);
}
if ($coursesetId) {
$query = "SELECT seminar_id FROM seminar_courseset sc WHERE set_id = ?";
$courses = array_merge(
$courses,
$db->fetchFirst($query, [$coursesetId])
);
}
if ($selectedCourses) {
$courses = array_merge($courses, $selectedCourses);
}
$data = [];
$callable = function ($course) use (&$data, $coursesetId) {
$data[$course->id] = [
'seminar_id' => $course->Seminar_id,
'VeranstaltungsNummer' => $course->VeranstaltungsNummer,
'Name' => $course->Name . ($course->isOpenEnded() ? ' ' . _('(unbegrenzt)') : ''),
'admission_turnout' => $course->admission_turnout,
'visible' => $course->visible,
];
$query = "SELECT `type`
FROM `seminar_courseset`
JOIN `courseset_rule` USING (`set_id`)
LEFT JOIN `semester_courses` ON `seminar_courseset`.`seminar_id` = `semester_courses`.`course_id`
LEFT JOIN `semester_data` USING (`semester_id`)
WHERE `type` IN ('LockedAdmission','PasswordAdmission')
AND `seminar_id` = ?";
if ($coursesetId) {
$query .= "AND `set_id` <> ?";
}
$data[$course->id]['admission_type'] = DBManager::get()->fetchColumn(
$query,
$coursesetId ? [$course->id, $coursesetId] : [$course->id]
);
};
Course::findEachMany($callable, array_unique($courses),"ORDER BY `semester_data`.`beginn` DESC, `VeranstaltungsNummer` ASC, `Name` ASC");
return $data;
}
/**
* Fetch institutes for course sets.
*
* @param Array $filter filter settings, e.g. a special subset of allowed
* admission rules
*
* @return Array Found institutes.
*
* @todo this is a really messed up construct and should be refactored
*/
public static function getInstitutes($filter = [])
{
global $perm, $user;
$parameters = [1];
$query = "SELECT COUNT(DISTINCT ci.set_id)
FROM courseset_institute ci
LEFT JOIN coursesets c ON c.set_id = ci.set_id
LEFT JOIN courseset_rule cr ON c.set_id = cr.set_id
LEFT JOIN seminar_courseset sc ON c.set_id = sc.set_id
LEFT JOIN seminare s ON s.seminar_id = sc.seminar_id
LEFT JOIN semester_courses ON s.seminar_id = semester_courses.course_id
WHERE ci.institute_id = ?";
if ($filter['course_set_name']) {
$query .= " AND c.name LIKE ?";
$parameters[] = $filter['course_set_name'] . '%';
}
if (is_array($filter['rule_types']) && count($filter['rule_types'])) {
$query .= " AND cr.type IN (?)";
$parameters[] = $filter['rule_types'];
}
if ($filter['semester_id']) {
$query .= " AND semester_courses.semester_id = ?";
$parameters[] = $filter['semester_id'];
}
$cs_count_statement = DBManager::get()->prepare($query);
$query = str_replace('ci.institute_id', '1', $query);
$cs_count_all_statement = DBManager::get()->prepare($query);
if ($perm->have_perm('root')) {
$cs_count_all_statement->execute($parameters);
$num_sets = $cs_count_all_statement->fetchColumn();
$my_inst['all'] = [
'name' => _('alle'),
'is_fak' => true,
'count' => $num_sets
];
$top_insts = Institute::findBySQL('Institut_id = fakultaets_id ORDER BY Name');
} else {
$top_insts = Institute::findMany(User::find($user->id)->institute_memberships->findBy('inst_perms', words('admin dozent'))->pluck('institut_id'),'ORDER BY institut_id=fakultaets_id,name');
}
foreach ($top_insts as $inst) {
$my_inst[$inst->id] = $inst->toArray('name is_fak');
$parameters[0] = $inst->id;
$cs_count_statement->execute($parameters);
$my_inst[$inst->id]['count'] = $cs_count_statement->fetchColumn();
if ($inst->is_fak && ($perm->have_perm('root') || $inst->members->findBy('user_id', $user->id)->val('inst_perms') == 'admin')) {
$alle = $inst->sub_institutes;
if (count($alle)) {
$my_inst[$inst->id . '_all'] = [
'name' => sprintf(_('[Alle unter %s]'), $inst->name),
'is_fak' => 'all'
];
$num_inst = 0;
$num_sets_alle = $my_inst[$inst->id]['count'];
foreach ($alle as $institute) {
$num_inst += 1;
$my_inst[$institute->id] = $institute->toArray('name is_fak');
$parameters[0] = $institute->id;
$cs_count_statement->execute($parameters);
$my_inst[$institute->id]['count'] = $cs_count_statement->fetchColumn();
$num_sets_alle += $my_inst[$institute->id]['count'];
}
$my_inst[$inst->id . '_all']['num_inst'] = $num_inst;
$my_inst[$inst->id . '_all']['count'] = $num_sets_alle;
}
}
}
return $my_inst;
}
}
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