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<?php
/**
* ForumAbo.php - Handle abonnements of areas/threads or even the whole forum
*
* 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 3 of
* the License, or (at your option) any later version.
*
* @author Till Glöggler <tgloeggl@uos.de>
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL version 3
* @category Stud.IP
*/
class ForumAbo
{
/**
* add the passed user as a watcher for the passed topic (including all
* current and future childs)
*
* @param string $topic_id
* @param string $user_id
*/
public static function add($topic_id, $user_id = null)
{
if (!$user_id) $user_id = $GLOBALS['user']->id;
$stmt = DBManager::get()->prepare("REPLACE INTO forum_abo_users
(topic_id, user_id) VALUEs (?, ?)");
$stmt->execute([$topic_id, $user_id]);
}
/**
* remove the passed user as a watcher from the passed topic (including all
* current and future childs)
*
* @param string $topic_id
* @param string $user_id
*/
public static function delete($topic_id, $user_id = null)
{
if (!$user_id) $user_id = $GLOBALS['user']->id;
$stmt = DBManager::get()->prepare("DELETE FROM forum_abo_users
WHERE topic_id = ? AND user_id = ?");
$stmt->execute([$topic_id, $user_id]);
}
/**
* check, if the passed user watches the passed topic. If no user_id is passed,
* the currently logged in user is used
*
* @param string $topic_id
* @param string $user_id
*
* @return boolean returns true if user is watching, false otherwise
*/
public static function has($topic_id, $user_id = null)
{
if (!$user_id) $user_id = $GLOBALS['user']->id;
$stmt = DBManager::get()->prepare("SELECT COUNT(*) FROM forum_abo_users
WHERE topic_id = ? AND user_id = ?");
$stmt->execute([$topic_id, $user_id]);
return $stmt->fetchColumn() > 0 ? true : false;
}
/**
* send out the notification messages for the passed topic. The contents
* and a link directly to the topic are added to the message.
*
* @param string $topic_id
*/
public static function notify($topic_id)
{
// send message to all abo-users
$db = DBManager::get();
$messaging = new ForumBulkMail();
// $messaging = new Messaging();
// get all parent topic-ids, to find out which users to notify
$path = ForumEntry::getPathToPosting($topic_id);
// fetch all users to notify, exclude current user
$stmt = $db->prepare("SELECT DISTINCT user_id
FROM forum_abo_users
WHERE topic_id IN (:topic_ids)
AND user_id != :user_id");
$stmt->bindParam(':topic_ids', array_keys($path), StudipPDO::PARAM_ARRAY);
$stmt->bindParam(':user_id', $GLOBALS['user']->id);
$stmt->execute();
// get details for topic
$topic = ForumEntry::getConstraints($topic_id);
$template = $GLOBALS['template_factory']->open('mail/forum_notification');
// notify users
while ($data = $stmt->fetch(PDO::FETCH_ASSOC)) {
$user_id = $data['user_id'];
// don't notify user if view permission is not granted
if (!ForumPerm::has('view', $topic['seminar_id'], $user_id)) {
continue;
}
$user = User::find($user_id);
// check if user wants an email for all or selected messages only
$force_email = false;
if ($messaging->user_wants_email($user_id)) {
$force_email = true;
}
// do not send mails when account is locked or expired
$expiration = UserConfig::get($user->id)->EXPIRATION_DATE;
if ($user->locked || ($expiration > 0 && $expiration < time())) {
$force_email = false;
}
$parent_id = ForumEntry::getParentTopicId($topic['topic_id']);
setTempLanguage($data['user_id']);
$notification = sprintf(_("%s hat einen Beitrag geschrieben"), ($topic['anonymous'] ? _('Anonym') : $topic['author']));
restoreLanguage();
PersonalNotifications::add(
$user_id,
URLHelper::getURL(
'dispatch.php/course/forum/index/index/' . $topic['topic_id'] . '#' . $topic['topic_id'],
['cid' => $topic['seminar_id']],
true
),
$notification,
"forumposting_" . $topic['topic_id'],
Icon::create('forum', 'clickable')
);
if ($force_email) {
$title = implode(' >> ', ForumEntry::getFlatPathToPosting($topic_id));
$subject = _('[Forum]') . ' ' . ($title ?: _('Neuer Beitrag'));
$htmlMessage = $template->render(
compact('user_id', 'topic', 'path')
);
$textMessage = trim(kill_format($htmlMessage));
$userWantsHtml = UserConfig::get($user_id)->MAIL_AS_HTML;
StudipMail::sendMessage(
$user->email,
$subject,
$textMessage,
$userWantsHtml ? $htmlMessage : null
);
}
}
$messaging->bulkSend();
}
/**
* Removes all abos for a given course and user
*
* @param String $course_id Id of the course
* @param String $user_id Id of the user
* @return int number of removed abos
*/
public static function removeForCourseAndUser($course_id, $user_id)
{
$query = "DELETE FROM `forum_abo_users`
WHERE `user_id` = :user_id
AND `topic_id` IN (
SELECT `topic_id`
FROM `forum_entries`
WHERE `seminar_id` = :course_id
)";
$statement = DBManager::get()->prepare($query);
$statement->bindValue(':course_id', $course_id);
$statement->bindValue(':user_id', $user_id);
$statement->execute();
return $statement->rowCount();
}
}
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