+<?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/>.
+ */
+
+if (!defined('STATUSNET')) {
+ exit(1);
+}
+
+/**
+ * @package OStatusPlugin
+ * @author James Walker <james@status.net>
+ */
+class UsersalmonAction extends SalmonAction
+{
+ function prepare($args)
+ {
+ parent::prepare($args);
+
+ $id = $this->trimmed('id');
+
+ if (!$id) {
+ $this->clientError(_m('No ID.'));
+ }
+
+ $this->user = User::staticGet('id', $id);
+
+ if (empty($this->user)) {
+ $this->clientError(_m('No such user.'));
+ }
+
+ $this->target = $this->user;
+
+ return true;
+ }
+
+ /**
+ * We've gotten a post event on the Salmon backchannel, probably a reply.
+ *
+ * @todo validate if we need to handle this post, then call into
+ * ostatus_profile's general incoming-post handling.
+ */
+ function handlePost()
+ {
+ common_log(LOG_INFO, "Received post of '{$this->activity->objects[0]->id}' from '{$this->activity->actor->id}'");
+
+ // @fixme: process all activity objects?
+ switch ($this->activity->objects[0]->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
+ // or c) in reply to a notice to the attention of this user
+
+ $context = $this->activity->context;
+
+ if (!empty($context->replyToID)) {
+ $notice = Notice::staticGet('uri', $context->replyToID);
+ if (empty($notice)) {
+ // TRANS: Client exception.
+ throw new ClientException(_m('In reply to unknown notice.'));
+ }
+ if ($notice->profile_id != $this->user->id &&
+ !in_array($this->user->id, $notice->getReplies())) {
+ // TRANS: Client exception.
+ throw new ClientException(_m('In reply to a notice not by this user and not mentioning this user.'));
+ }
+ } else if (!empty($context->attention)) {
+ if (!in_array($this->user->uri, $context->attention) &&
+ !in_array(common_profile_url($this->user->nickname), $context->attention)) {
+ common_log(LOG_ERR, "{$this->user->uri} not in attention list (".implode(',', $context->attention).")");
+ // TRANS: Client exception.
+ throw new ClientException('To the attention of user(s), not including this one.');
+ }
+ } else {
+ // TRANS: Client exception.
+ throw new ClientException('Not to anyone in reply to anything.');
+ }
+
+ $existing = Notice::staticGet('uri', $this->activity->objects[0]->id);
+
+ if (!empty($existing)) {
+ common_log(LOG_ERR, "Not saving notice '{$existing->uri}'; already exists.");
+ return;
+ }
+
+ $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->activity->objects[0]);
+ $profile = $this->ensureProfile()->localProfile();
+
+ $old = Fave::pkeyGet(array('user_id' => $profile->id,
+ 'notice_id' => $notice->id));
+
+ if (!empty($old)) {
+ // TRANS: Client exception.
+ throw new ClientException(_('This is already a favorite.'));
+ }
+
+ if (!Fave::addNew($profile, $notice)) {
+ // TRANS: Client exception.
+ throw new ClientException(_m('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->activity->objects[0]);
+ $profile = $this->ensureProfile()->localProfile();
+
+ $fave = Fave::pkeyGet(array('user_id' => $profile->id,
+ 'notice_id' => $notice->id));
+ if (empty($fave)) {
+ // TRANS: Client exception.
+ throw new ClientException(_('Notice wasn\'t favorited!'));
+ }
+
+ $fave->delete();
+ }
+
+ /**
+ * @param ActivityObject $object
+ * @return Notice
+ * @throws ClientException on invalid input
+ */
+ function getNotice($object)
+ {
+ if (!$object) {
+ // TRANS: Client exception.
+ throw new ClientException(_m('Can\'t favorite/unfavorite without an object.'));
+ }
+
+ switch ($object->type) {
+ case ActivityObject::ARTICLE:
+ case ActivityObject::BLOGENTRY:
+ case ActivityObject::NOTE:
+ case ActivityObject::STATUS:
+ case ActivityObject::COMMENT:
+ break;
+ default:
+ // TRANS: Client exception.
+ throw new ClientException(_m('Can\'t handle that kind of object for liking/faving.'));
+ }
+
+ $notice = Notice::staticGet('uri', $object->id);
+
+ if (empty($notice)) {
+ // TRANS: Client exception. %s is an object ID.
+ throw new ClientException(sprintf(_m('Notice with ID %s unknown.'),$object->id));
+ }
+
+ if ($notice->profile_id != $this->user->id) {
+ // TRANS: Client exception. %1$s is a notice ID, %2$s is a user ID.
+ throw new ClientException(sprintf(_m('Notice with ID %1$s not posted by %2$s.'),$object->id,$this->user->id));
+ }
+
+ return $notice;
+ }
+}