/**
* Function to be run periodically according to the moodle cron
* Mails new conversations out to participants, checks for any new
* participants, and cleans up expired/closed conversations
* @return bool true when complete
*/
function dialogue_process_bulk_openrules()
{
global $CFG, $DB;
require_once $CFG->dirroot . '/mod/dialogue/locallib.php';
mtrace('1. Dealing with bulk open rules...');
$sql = "SELECT dbor.*\r\n FROM {dialogue_bulk_opener_rules} dbor\r\n JOIN {dialogue_messages} dm ON dm.conversationid = dbor.conversationid\r\n WHERE dm.state = :bulkautomated\r\n AND dbor.lastrun = 0\r\n OR (dbor.includefuturemembers = 1 AND dbor.cutoffdate > dbor.lastrun)";
$params = array('bulkautomated' => \mod_dialogue\dialogue::STATE_BULK_AUTOMATED);
$rs = $DB->get_recordset_sql($sql, $params);
if ($rs->valid()) {
foreach ($rs as $record) {
// try and die elegantly
try {
// setup dialogue
$dialogue = \mod_dialogue\dialogue::instance($record->dialogueid);
if (!$dialogue->is_visible()) {
mtrace(' Skipping hidden dialogue: ' . $dialogue->activityrecord->name);
continue;
}
// setup conversation
$conversation = new \mod_dialogue\conversation($dialogue, (int) $record->conversationid);
$withcapability = 'mod/dialogue:receive';
$groupid = 0;
// it either a course or a group, default to course
$requiredfields = user_picture::fields('u');
if ($record->type == 'group') {
$groupid = $record->sourceid;
}
$conversationsopened = 0;
// get users that can receive
$enrolledusers = get_enrolled_users($dialogue->context, $withcapability, $groupid, $requiredfields);
$sentusers = $DB->get_records('dialogue_flags', array('conversationid' => $conversation->conversationid, 'flag' => \mod_dialogue\dialogue::FLAG_SENT), '', 'userid');
$users = array_diff_key($enrolledusers, $sentusers);
foreach ($users as $user) {
// don't start with author
if ($user->id == $conversation->author->id) {
continue;
}
// get a copy of the conversation
$copy = $conversation->copy();
$copy->add_participant($user->id);
$copy->save();
$copy->send();
// mark the sent in automated conversation, so can track who sent to
$conversation->set_flag(\mod_dialogue\dialogue::FLAG_SENT, $user);
unset($copy);
mtrace(' opened ' . $conversation->subject . ' with ' . fullname($user));
// up open count
$conversationsopened++;
}
$DB->set_field('dialogue_bulk_opener_rules', 'lastrun', time(), array('conversationid' => $record->conversationid));
mtrace(' Opened ' . $conversationsopened . ' for conversation ' . $conversation->subject);
} catch (moodle_exception $e) {
mtrace($e->module . ' : ' . $e->errorcode);
}
}
} else {
mtrace(' None to process');
}
$rs->close();
return true;
}
