function asActivity()
{
$act = new Activity();
if (Event::handle('StartMessageAsActivity', array($this, &$act))) {
$act->id = TagURI::mint(sprintf('activity:message:%d', $this->id));
$act->time = strtotime($this->created);
$act->link = $this->url;
$profile = Profile::getKV('id', $this->from_profile);
if (empty($profile)) {
throw new Exception(sprintf("Sender profile not found: %d", $this->from_profile));
}
$act->actor = $profile->asActivityObject();
$act->actor->extra[] = $profile->profileInfo();
$act->verb = ActivityVerb::POST;
$act->objects[] = ActivityObject::fromMessage($this);
$ctx = new ActivityContext();
$rprofile = Profile::getKV('id', $this->to_profile);
if (empty($rprofile)) {
throw new Exception(sprintf("Receiver profile not found: %d", $this->to_profile));
}
$ctx->attention[$rprofile->getUri()] = ActivityObject::PERSON;
$act->context = $ctx;
$source = $this->getSource();
if ($source instanceof Notice_source) {
$act->generator = ActivityObject::fromNoticeSource($source);
}
Event::handle('EndMessageAsActivity', array($this, &$act));
}
return $act;
}
