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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2010, StatusNet, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @package OStatusPlugin
* @author James Walker <james@status.net>
*/
if (!defined('STATUSNET')) {
exit(1);
}
class UsersalmonAction extends SalmonAction
{
function prepare($args)
{
parent::prepare($args);
$id = $this->trimmed('id');
if (!$id) {
$this->clientError(_('No ID.'));
}
$this->user = User::staticGet('id', $id);
if (empty($this->user)) {
$this->clientError(_('No such user.'));
}
return true;
}
/**
* We've gotten a post event on the Salmon backchannel, probably a reply.
*
* @todo validate if we need to handle this post, then call into
* ostatus_profile's general incoming-post handling.
*/
function handlePost()
{
switch ($this->act->object->type) {
case ActivityObject::ARTICLE:
case ActivityObject::BLOGENTRY:
case ActivityObject::NOTE:
case ActivityObject::STATUS:
case ActivityObject::COMMENT:
break;
default:
throw new ClientException("Can't handle that kind of post.");
}
// Notice must either be a) in reply to a notice by this user
// or b) to the attention of this user
$context = $this->act->context;
if (!empty($context->replyToID)) {
$notice = Notice::staticGet('uri', $context->replyToID);
if (empty($notice)) {
throw new ClientException("In reply to unknown notice");
}
if ($notice->profile_id != $this->user->id) {
throw new ClientException("In reply to a notice not by this user");
}
} else if (!empty($context->attention)) {
if (!in_array($this->user->uri, $context->attention)) {
common_log(LOG_ERR, "{$this->user->uri} not in attention list (".implode(',', $context->attention).")");
throw new ClientException("To the attention of user(s) not including this one!");
}
} else {
throw new ClientException("Not to anyone in reply to anything!");
}
$this->saveNotice();
}
/**
* We've gotten a follow/subscribe notification from a remote user.
* Save a subscription relationship for them.
*/
function handleFollow()
{
$oprofile = $this->ensureProfile();
if ($oprofile) {
common_log(LOG_INFO, "Setting up subscription from remote {$oprofile->uri} to local {$this->user->nickname}");
Subscription::start($oprofile->localProfile(),
$this->user->getProfile());
} else {
common_log(LOG_INFO, "Can't set up subscription from remote; missing profile.");
}
}
/**
* We've gotten an unfollow/unsubscribe notification from a remote user.
* Check if we have a subscription relationship for them and kill it.
*
* @fixme probably catch exceptions on fail?
*/
function handleUnfollow()
{
$oprofile = $this->ensureProfile();
if ($oprofile) {
common_log(LOG_INFO, "Canceling subscription from remote {$oprofile->uri} to local {$this->user->nickname}");
Subscription::cancel($oprofile->localProfile(), $this->user->getProfile());
} else {
common_log(LOG_ERR, "Can't cancel subscription from remote, didn't find the profile");
}
}
/**
* Remote user likes one of our posts.
* Confirm the post is ours, and save a local favorite event.
*/
function handleFavorite()
{
$notice = $this->getNotice($this->act->object);
$profile = $this->ensureProfile()->localProfile();
$old = Fave::pkeyGet(array('user_id' => $profile->id,
'notice_id' => $notice->id));
if (!empty($old)) {
throw new ClientException("We already know that's a fave!");
}
if (!Fave::addNew($profile, $notice)) {
throw new ClientException("Could not save new favorite.");
}
}
/**
* Remote user doesn't like one of our posts after all!
* Confirm the post is ours, and save a local favorite event.
*/
function handleUnfavorite()
{
$notice = $this->getNotice($this->act->object);
$profile = $this->ensureProfile()->localProfile();
$fave = Fave::pkeyGet(array('user_id' => $profile->id,
'notice_id' => $notice->id));
if (empty($fave)) {
throw new ClientException("Notice wasn't favorited!");
}
$fave->delete();
}
/**
* @param ActivityObject $object
* @return Notice
* @throws ClientException on invalid input
*/
function getNotice($object)
{
if (!$object) {
throw new ClientException("Can't favorite/unfavorite without an object.");
}
switch ($object->type) {
case ActivityObject::ARTICLE:
case ActivityObject::BLOGENTRY:
case ActivityObject::NOTE:
case ActivityObject::STATUS:
case ActivityObject::COMMENT:
break;
default:
throw new ClientException("Can't handle that kind of object for liking/faving.");
}
$notice = Notice::staticGet('uri', $object->id);
if (empty($notice)) {
throw new ClientException("Notice with ID $object->id unknown.");
}
if ($notice->profile_id != $this->user->id) {
throw new ClientException("Notice with ID $object->id not posted by $this->user->id.");
}
return $notice;
}
}
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