forked from GNUsocial/gnu-social
398 lines
13 KiB
PHP
398 lines
13 KiB
PHP
<?php
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/**
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* Table Definition for fave
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*/
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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(255)
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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' => 255, 'description' => 'universally unique identifier, usually a tag URI'),
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'created' => array('type' => 'datetime', 'not null' => true, '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 $profile the local or remote user who likes
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* @param Notice $notice the notice that is liked
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* @return mixed false on failure, or Fave record on success
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*/
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static function addNew(Profile $profile, Notice $notice) {
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$fave = null;
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if (Event::handle('StartFavorNotice', array($profile, $notice, &$fave))) {
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$fave = new Fave();
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$fave->user_id = $profile->id;
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$fave->notice_id = $notice->id;
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$fave->created = common_sql_now();
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$fave->modified = common_sql_now();
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$fave->uri = self::newUri($profile,
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$notice,
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$fave->created);
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try {
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$fave->insert();
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} catch (ServerException $e) {
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common_log_db_error($fave, 'INSERT', __FILE__);
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return false;
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}
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self::blowCacheForProfileId($fave->user_id);
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self::blowCacheForNoticeId($fave->notice_id);
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self::blow('popular');
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Event::handle('EndFavorNotice', array($profile, $notice));
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}
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return $fave;
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}
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// exception throwing takeover!
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public function insert()
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{
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if (!parent::insert()) {
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throw new ServerException(sprintf(_m('Could not store new object of type %s'), get_called_class()));
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}
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self::blowCacheForProfileId($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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$profile = Profile::getKV('id', $this->user_id);
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$notice = Notice::getKV('id', $this->notice_id);
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$result = null;
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if (Event::handle('StartDisfavorNotice', array($profile, $notice, &$result))) {
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$result = parent::delete($useWhere);
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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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if ($result) {
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Event::handle('EndDisfavorNotice', array($profile, $notice));
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}
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}
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return $result;
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}
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function stream($user_id, $offset=0, $limit=NOTICES_PER_PAGE, $own=false, $since_id=0, $max_id=0)
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{
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$stream = new FaveNoticeStream($user_id, $own);
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return $stream->getNotices($offset, $limit, $since_id, $max_id);
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}
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function idStream($user_id, $offset=0, $limit=NOTICES_PER_PAGE, $own=false, $since_id=0, $max_id=0)
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{
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$stream = new FaveNoticeStream($user_id, $own);
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return $stream->getNoticeIds($offset, $limit, $since_id, $max_id);
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}
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function asActivity()
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{
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$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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$act->content = $target->rendered ?: $target->content;
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$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',
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array('profile' => $actor->id,
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'notice' => $target->id));
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$act->selfLink = $url;
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$act->editLink = $url;
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return $act;
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}
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static function existsForProfile($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 $limit Number to get
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*
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* @return mixed stream of faves, use fetch() to iterate
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*
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* @todo Cache results
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* @todo integrate with Fave::stream()
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*/
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static function byProfile($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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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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static protected $_faves = array();
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/**
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* All faves of this notice
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*
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* @param Notice $notice A notice we wish to get faves for (may still be ArrayWrapper)
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*
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* @return array Array of Fave objects
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*/
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static public function byNotice($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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static public 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, $faveMap);
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}
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static public function blowCacheForProfileId($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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static public 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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static public 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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static public function getObjectType()
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{
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return '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 = $target->rendered ?: $target->content;
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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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static public function parseActivityObject(ActivityObject $actobj, Notice $stored)
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{
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$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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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!
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Event::handle('EndFavorNotice', array($stored->getProfile(), $object->getTarget()));
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return $object;
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}
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public function getAttentionArray() {
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// not all objects can/should carry attentions, so we don't require extending this
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// the format should be an array with URIs to mentioned profiles
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return array();
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}
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public function getTarget()
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{
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// throws exception on failure
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$target = new Notice();
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$target->id = $this->notice_id;
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if (!$target->find(true)) {
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throw new NoResultException($target);
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}
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return $target;
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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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$profile = new Profile();
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$profile->id = $this->user_id;
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if (!$profile->find(true)) {
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throw new NoResultException($profile);
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}
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return $profile;
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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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static function newUri(Profile $actor, Managed_DataObject $target, $created=null)
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{
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if (is_null($created)) {
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$created = common_sql_now();
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}
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return TagURI::mint(strtolower(get_called_class()).':%d:%s:%d:%s',
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$actor->id,
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ActivityUtils::resolveUri(self::getObjectType(), true),
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$target->id,
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common_date_iso8601($created));
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}
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}
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