function Streams_before_Q_objects()
{
$token = Q_Request::special('Streams.token', null);
if ($token === null) {
return;
}
$invite = Streams_Invite::fromToken($token);
if (!$invite) {
throw new Q_Exception_MissingRow(array('table' => 'invite', 'criteria' => "token = '{$token}"), 'token');
}
// did invite expire?
$ts = Streams_Invite::db()->select("CURRENT_TIMESTAMP")->fetchAll(PDO::FETCH_NUM);
if (isset($invite->expireTime) and $invite->expireTime < $ts[0][0]) {
$invite->state = 'expired';
$invite->save();
}
// is invite still pending?
if ($invite->state !== 'pending') {
switch ($invite->state) {
case 'expired':
$exception = new Streams_Exception_AlreadyExpired(null, 'token');
break;
case 'accepted':
$exception = new Streams_Exception_AlreadyAccepted(null, 'token');
break;
case 'declined':
$exception = new Streams_Exception_AlreadyDeclined(null, 'token');
break;
case 'forwarded':
$exception = new Streams_Exception_AlreadyForwarded(null, 'token');
break;
default:
$exception = new Q_Exception("This invite has already been " . $invite->state, 'token');
break;
}
$shouldThrow = Q::event('Streams/objects/inviteException', compact('invite', 'exception'), 'before');
if ($shouldThrow === null) {
Q_Response::setNotice('Streams/objects', $exception->getMessage(), true);
} else {
if ($shouldThrow === true) {
throw $exception;
}
}
}
// now process the invite
$invitedUser = Users_User::fetch($invite->userId, true);
$stream = Streams::fetchOne($invitedUser->id, $invite->publisherId, $invite->streamName);
if (!$stream) {
throw new Q_Exception_MissingRow(array('table' => 'stream', 'criteria' => "publisherId = '{$invite->publisherId}', name = '{$invite->streamName}'"));
}
$byUser = Users_User::fetch($invite->invitingUserId, true);
$byStream = Streams::fetchOne($byUser->id, $invite->publisherId, $invite->streamName);
if (!$byStream) {
throw new Q_Exception_MissingRow(array('table' => 'stream', 'criteria' => "publisherId = '{$invite->publisherId}', name = '{$invite->streamName}'"));
}
$access = new Streams_Access();
$access->publisherId = $byStream->publisherId;
$access->streamName = $byStream->name;
$access->ofUserId = $invite->userId;
$specified_access = false;
foreach (array('readLevel', 'writeLevel', 'adminLevel') as $level_type) {
$access->{$level_type} = -1;
if (empty($invite->{$level_type})) {
continue;
}
// Give access level from the invite.
// However, if inviting user has a lower access level now,
// then give that level instead, unless it is lower than
// what the invited user would have had otherwise.
$min = min($invite->{$level_type}, $byStream->get($level_type, 0));
if ($min > $stream->get($level_type, 0)) {
$access->{$level_type} = $min;
$specified_access = true;
}
}
if ($specified_access) {
$access->save(true);
}
// now log invited user in
$user = Users::loggedInUser();
if (empty($user) or $user->id !== $invite->userId) {
$user = new Users_User();
$user->id = $invite->userId;
if (!$user->retrieve()) {
// The user who was invited doesn't exist
// This shouldn't happen. We just silently log it and return.
Q::log("Sanity check failed: invite with {$invite->token} pointed to nonexistent user");
return;
}
Users::setLoggedInUser($user);
}
// accept invite and autosubscribe if first time
if ($invite->accept() and !$stream->subscription($user->id)) {
$stream->subscribe();
}
// retain the invite object for further processing
Streams::$followedInvite = $invite;
}
