506 lines
18 KiB
PHP
506 lines
18 KiB
PHP
<?php
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// GNU social is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Table Definition for fave
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*/
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defined('GNUSOCIAL') || die();
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class Fave extends Managed_DataObject
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{
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public $__table = 'fave'; // table name
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public $notice_id; // int(4) primary_key not_null
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public $user_id; // int(4) primary_key not_null
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public $uri; // varchar(191) not 255 because utf8mb4 takes more space not 255 because utf8mb4 takes more space
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public $created; // datetime multiple_key not_null
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public $modified; // timestamp() not_null default_CURRENT_TIMESTAMP
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public static function schemaDef()
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{
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return array(
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'fields' => array(
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'notice_id' => array('type' => 'int', 'not null' => true, 'description' => 'notice that is the favorite'),
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'user_id' => array('type' => 'int', 'not null' => true, 'description' => 'user who likes this notice'),
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'uri' => array('type' => 'varchar', 'length' => 191, 'description' => 'universally unique identifier, usually a tag URI'),
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'created' => array('type' => 'datetime', 'description' => 'date this record was created'),
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'modified' => array('type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'),
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),
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'primary key' => array('notice_id', 'user_id'),
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'unique keys' => array(
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'fave_uri_key' => array('uri'),
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),
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'foreign keys' => array(
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'fave_notice_id_fkey' => array('notice', array('notice_id' => 'id')),
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'fave_user_id_fkey' => array('profile', array('user_id' => 'id')), // note: formerly referenced notice.id, but we can now record remote users' favorites
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),
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'indexes' => array(
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'fave_notice_id_idx' => array('notice_id'),
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'fave_user_id_idx' => array('user_id', 'modified'),
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'fave_modified_idx' => array('modified'),
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),
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);
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}
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/**
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* Save a favorite record.
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* @fixme post-author notification should be moved here
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*
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* @param Profile $actor the local or remote Profile who favorites
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* @param Notice $target the notice that is favorited
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* @return Fave record on success
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* @throws Exception on failure
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*/
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public static function addNew(Profile $actor, Notice $target)
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{
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if (self::existsForProfile($target, $actor)) {
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// TRANS: Client error displayed when trying to mark a notice as favorite that already is a favorite.
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throw new AlreadyFulfilledException(_('You have already favorited this!'));
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}
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$act = new Activity();
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$act->type = ActivityObject::ACTIVITY;
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$act->verb = ActivityVerb::FAVORITE;
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$act->time = time();
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$act->id = self::newUri($actor, $target, common_sql_date($act->time));
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$act->title = _("Favor");
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// TRANS: Message that is the "content" of a favorite (%1$s is the actor's nickname, %2$ is the favorited
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// notice's nickname and %3$s is the content of the favorited notice.)
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$act->content = sprintf(
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_('%1$s favorited something by %2$s: %3$s'),
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$actor->getNickname(),
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$target->getProfile()->getNickname(),
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$target->getRendered()
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);
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$act->actor = $actor->asActivityObject();
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$act->target = $target->asActivityObject();
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$act->objects = array(clone($act->target));
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$url = common_local_url('AtomPubShowFavorite', array('profile'=>$actor->id, 'notice'=>$target->id));
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$act->selfLink = $url;
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$act->editLink = $url;
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// saveActivity will in turn also call Fave::saveActivityObject which does
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// what this function used to do before this commit.
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$stored = Notice::saveActivity($act, $actor);
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return $stored;
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}
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public static function removeEntry(Profile $actor, Notice $target)
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{
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$fave = new Fave();
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$fave->user_id = $actor->getID();
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$fave->notice_id = $target->getID();
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if (!$fave->find(true)) {
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// TRANS: Client error displayed when trying to remove a 'favor' when there is none in the first place.
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throw new AlreadyFulfilledException(_('This is already not favorited.'));
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}
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$result = $fave->delete();
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if ($result === false) {
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common_log_db_error($fave, 'DELETE', __FILE__);
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// TRANS: Server error displayed when removing a favorite from the database fails.
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throw new ServerException(_('Could not delete favorite.'));
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}
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Fave::blowCacheForProfileId($actor->getID());
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Fave::blowCacheForNoticeId($target->getID());
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}
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// exception throwing takeover!
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public function insert()
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{
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if (parent::insert()===false) {
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common_log_db_error($this, 'INSERT', __FILE__);
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throw new ServerException(sprintf(_m('Could not store new object of type %s'), get_called_class()));
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}
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self::blowCacheForProfileId($this->user_id);
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self::blowCacheForNoticeId($this->notice_id);
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return $this;
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}
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public function delete($useWhere=false)
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{
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$result = null;
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try {
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$profile = $this->getActor();
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$notice = $this->getTarget();
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if (Event::handle('StartDisfavorNotice', array($profile, $notice, &$result))) {
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$result = parent::delete($useWhere);
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if ($result !== false) {
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Event::handle('EndDisfavorNotice', array($profile, $notice));
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}
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}
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} catch (NoResultException $e) {
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// In case there's some inconsistency where the profile or notice was deleted without losing the fave db entry
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common_log(LOG_INFO, '"'.get_class($e->obj).'" with id=='.var_export($e->obj->id, true).' object not found when deleting favorite, ignoring...');
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} catch (EmptyPkeyValueException $e) {
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// Some buggy instances of GNU social have had favorites with notice id==0 stored in the database
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common_log(LOG_INFO, _ve($e->getMessage()));
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}
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// If we catch an exception above, then $result===null because parent::delete only returns an int>=0 or boolean false
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if (is_null($result)) {
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// Delete it without the event, as something is wrong and we don't want it anyway.
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$result = parent::delete($useWhere);
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}
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// Err, apparently we can reference $this->user_id after parent::delete,
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// I guess it's safe because this is the order it was before!
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self::blowCacheForProfileId($this->user_id);
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self::blowCacheForNoticeId($this->notice_id);
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self::blow('popular');
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return $result;
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}
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// FIXME: Instead of $own, send the scoped Profile so we can pass it along
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// directly to FaveNoticeStream and preferrably we should get a Profile
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// instead of $user_id
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public static function stream(
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$user_id,
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$offset = 0,
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$limit = NOTICES_PER_PAGE,
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$own = false,
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$since_id = 0,
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$max_id = 0
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) {
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$target = Profile::getByID($user_id);
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$stream = new FaveNoticeStream($target, ($own ? $target : null));
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return $stream->getNotices($offset, $limit, $since_id, $max_id);
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}
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// FIXME: Instead of $own, send the scoped Profile so we can pass it along
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// directly to FaveNoticeStream and preferrably we should get a Profile
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// instead of $user_id
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public function idStream(
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$user_id,
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$offset = 0,
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$limit = NOTICES_PER_PAGE,
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$own = false,
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$since_id = 0,
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$max_id = 0
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) {
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$target = Profile::getByID($user_id);
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$stream = new FaveNoticeStream($target, ($own ? $target : null));
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return $stream->getNoticeIds($offset, $limit, $since_id, $max_id);
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}
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public function asActivity()
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{
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$target = $this->getTarget();
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$actor = $this->getActor();
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$act = new Activity();
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$act->verb = ActivityVerb::FAVORITE;
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// FIXME: rationalize this with URL below
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$act->id = $this->getUri();
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$act->time = strtotime($this->created);
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// TRANS: Activity title when marking a notice as favorite.
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$act->title = _("Favor");
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// TRANS: Message that is the "content" of a favorite (%1$s is the actor's nickname, %2$ is the favorited
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// notice's nickname and %3$s is the content of the favorited notice.)
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$act->content = sprintf(
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_('%1$s favorited something by %2$s: %3$s'),
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$actor->getNickname(),
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$target->getProfile()->getNickname(),
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$target->getRendered()
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);
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$act->context = new ActivityContext();
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$act->context->replyToID = $target->getUri();
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try {
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$act->context->replyToURL = $target->getUrl();
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} catch (InvalidUrlException $e) {
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// ok, no replyToURL, i.e. the href="" in <thr:in-reply-to/>
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}
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$act->actor = $actor->asActivityObject();
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$act->target = $target->asActivityObject();
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$act->objects = array(clone($act->target));
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$url = common_local_url(
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'AtomPubShowFavorite',
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[
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'profile' => $actor->id,
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'notice' => $target->id,
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]
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);
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$act->selfLink = $url;
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$act->editLink = $url;
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return $act;
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}
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public static function existsForProfile($notice, Profile $scoped)
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{
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$fave = self::pkeyGet(array('user_id'=>$scoped->id, 'notice_id'=>$notice->id));
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return ($fave instanceof Fave);
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}
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/**
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* Fetch a stream of favorites by profile
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*
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* @param integer $profileId Profile that faved
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* @param integer $offset Offset from last
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* @param integer $limit Number to get
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*
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* @return mixed stream of faves, use fetch() to iterate
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*
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* @todo Cache results
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* @todo integrate with Fave::stream()
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*/
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public static function byProfile($profileId, $offset, $limit)
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{
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$fav = new Fave();
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$fav->user_id = $profileId;
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$fav->orderBy('modified DESC');
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$fav->limit($offset, $limit);
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$fav->find();
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return $fav;
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}
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public static function countByProfile(Profile $profile)
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{
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$c = Cache::instance();
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if (!empty($c)) {
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$cnt = $c->get(Cache::key('fave:count_by_profile:'.$profile->id));
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if (is_integer($cnt)) {
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return $cnt;
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}
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}
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$faves = new Fave();
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$faves->user_id = $profile->id;
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$cnt = (int) $faves->count('notice_id');
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if (!empty($c)) {
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$c->set(Cache::key('fave:count_by_profile:'.$profile->id), $cnt);
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}
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return $cnt;
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}
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protected static $_faves = [];
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/**
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* All faves of this notice
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*
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* @param Notice $notice A notice we wish to get faves for (may still be ArrayWrapper)
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*
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* @return array Array of Fave objects
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*/
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public static function byNotice($notice)
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{
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if (!isset(self::$_faves[$notice->id])) {
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self::fillFaves(array($notice->id));
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}
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return self::$_faves[$notice->id];
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}
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public static function fillFaves(array $notice_ids)
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{
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$faveMap = Fave::listGet('notice_id', $notice_ids);
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self::$_faves = array_replace(self::$_faves, $faveMap);
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}
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public static function blowCacheForProfileId($profile_id)
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{
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$cache = Cache::instance();
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if ($cache) {
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// Faves don't happen chronologically, so we need to blow
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// ;last cache, too
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$cache->delete(Cache::key('fave:ids_by_user:'.$profile_id));
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$cache->delete(Cache::key('fave:ids_by_user:'.$profile_id.';last'));
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$cache->delete(Cache::key('fave:ids_by_user_own:'.$profile_id));
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$cache->delete(Cache::key('fave:ids_by_user_own:'.$profile_id.';last'));
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$cache->delete(Cache::key('fave:count_by_profile:'.$profile_id));
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}
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}
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public static function blowCacheForNoticeId($notice_id)
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{
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$cache = Cache::instance();
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if ($cache) {
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$cache->delete(Cache::key('fave:list-ids:notice_id:'.$notice_id));
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}
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}
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// Remember that we want the _activity_ notice here, not faves applied
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// to the supplied Notice (as with byNotice)!
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public static function fromStored(Notice $stored)
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{
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$class = get_called_class();
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$object = new $class;
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$object->uri = $stored->uri;
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if (!$object->find(true)) {
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throw new NoResultException($object);
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}
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return $object;
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}
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/**
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* Retrieves the _targeted_ notice of a verb (such as the notice that was
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* _favorited_, but not the favorite activity itself).
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*
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* @param Notice $stored The activity notice.
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*
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* @throws NoResultException when it can't find what it's looking for.
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*/
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public static function getTargetFromStored(Notice $stored)
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{
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return self::fromStored($stored)->getTarget();
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}
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public static function getObjectType()
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{
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return ActivityObject::ACTIVITY;
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}
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public function asActivityObject(Profile $scoped=null)
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{
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$actobj = new ActivityObject();
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$actobj->id = $this->getUri();
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$actobj->type = ActivityUtils::resolveUri(self::getObjectType());
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$actobj->actor = $this->getActorObject();
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$actobj->target = $this->getTargetObject();
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$actobj->objects = array(clone($actobj->target));
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$actobj->verb = ActivityVerb::FAVORITE;
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$actobj->title = ActivityUtils::verbToTitle($actobj->verb);
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$actobj->content = $this->getTarget()->getRendered();
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return $actobj;
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}
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/**
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* @param ActivityObject $actobj The _favored_ notice (which we're "in-reply-to")
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* @param Notice $stored The _activity_ notice, i.e. the favor itself.
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*/
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public static function parseActivityObject(ActivityObject $actobj, Notice $stored)
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{
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// throws exception if nothing was found, but it could also be a non-Notice...
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// FIXME: This should only test _one_ URI (and not the links etc.) though a function like this could be useful in other cases
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$local = ActivityUtils::findLocalObject($actobj->getIdentifiers());
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if (!$local instanceof Notice) {
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// $local always returns something, but this was not what we expected. Something is wrong.
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throw new Exception('Something other than a Notice was returned from findLocalObject');
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}
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$actor = $stored->getProfile();
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$object = new Fave();
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$object->user_id = $stored->getProfile()->id;
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$object->notice_id = $local->id;
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$object->uri = $stored->uri;
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$object->created = $stored->created;
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$object->modified = $stored->modified;
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return $object;
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}
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public static function extendActivity(
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Notice $stored,
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Activity $act,
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Profile $scoped = null
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) {
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$target = self::getTargetFromStored($stored);
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// The following logic was copied from StatusNet's Activity plugin
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if (ActivityUtils::compareVerbs($target->verb, array(ActivityVerb::POST))) {
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// "I like the thing you posted"
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$act->objects = $target->asActivity()->objects;
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} else {
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// "I like that you did whatever you did"
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$act->target = $target->asActivityObject();
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$act->objects = array(clone($act->target));
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}
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$act->context->replyToID = $target->getUri();
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$act->context->replyToUrl = $target->getUrl();
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$act->title = ActivityUtils::verbToTitle($act->verb);
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}
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public static function saveActivityObject(ActivityObject $actobj, Notice $stored)
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{
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$object = self::parseActivityObject($actobj, $stored);
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$object->insert(); // exception throwing in Fave's case!
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self::blowCacheForProfileId($object->user_id);
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self::blowCacheForNoticeId($object->notice_id);
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self::blow('popular');
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Event::handle('EndFavorNotice', array($stored->getProfile(), $object->getTarget()));
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return $object;
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}
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public function getTarget()
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{
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return Notice::getByID($this->notice_id);
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}
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public function getTargetObject()
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{
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return $this->getTarget()->asActivityObject();
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}
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protected $_stored = array();
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public function getStored()
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{
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if (!isset($this->_stored[$this->uri])) {
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$stored = new Notice();
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$stored->uri = $this->uri;
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if (!$stored->find(true)) {
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throw new NoResultException($stored);
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}
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$this->_stored[$this->uri] = $stored;
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}
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return $this->_stored[$this->uri];
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}
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public function getActor()
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{
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return Profile::getByID($this->user_id);
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}
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public function getActorObject()
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{
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return $this->getActor()->asActivityObject();
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}
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public function getUri()
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{
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if (!empty($this->uri)) {
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return $this->uri;
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}
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// We (should've in this case) created it ourselves, so we tag it ourselves
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return self::newUri($this->getActor(), $this->getTarget(), $this->created);
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}
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}
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