friendica/src/Model/Tag.php
2022-10-29 22:11:39 +00:00

821 lines
23 KiB
PHP

<?php
/**
* @copyright Copyright (C) 2010-2022, the Friendica project
*
* @license GNU AGPL version 3 or any later version
*
* 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 <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Model;
use Friendica\Content\Text\BBCode;
use Friendica\Core\Cache\Enum\Duration;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Core\System;
use Friendica\Database\Database;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Protocol\ActivityPub;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\Strings;
/**
* Class Tag
*
* This Model class handles tag table interactions.
* This tables stores relevant tags related to posts, like hashtags and mentions.
*/
class Tag
{
const UNKNOWN = 0;
const HASHTAG = 1;
const MENTION = 2;
/**
* An implicit mention is a mention in a comment body that is redundant with the threading information.
*/
const IMPLICIT_MENTION = 8;
/**
* An exclusive mention transmits the post only to the target account without transmitting it to the followers, usually a forum.
*/
const EXCLUSIVE_MENTION = 9;
const TO = 10;
const CC = 11;
const BTO = 12;
const BCC = 13;
const ACCOUNT = 1;
const GENERAL_COLLECTION = 2;
const FOLLOWER_COLLECTION = 3;
const PUBLIC_COLLECTION = 4;
const TAG_CHARACTER = [
self::HASHTAG => '#',
self::MENTION => '@',
self::EXCLUSIVE_MENTION => '!',
self::IMPLICIT_MENTION => '%',
];
/**
* Store tag/mention elements
*
* @param integer $uriId
* @param integer $type Tag type
* @param string $name Tag name
* @param string $url Contact URL (optional)
* @param integer $target Target (default: null)
* @return void
*/
public static function store(int $uriId, int $type, string $name, string $url = '', int $target = null)
{
if ($type == self::HASHTAG) {
// Trim Unicode non-word characters
$name = preg_replace('/(^\W+)|(\W+$)/us', '', $name);
$tags = explode(self::TAG_CHARACTER[self::HASHTAG], $name);
if (count($tags) > 1) {
foreach ($tags as $tag) {
self::store($uriId, $type, $tag, $url);
}
return;
}
}
if (empty($name)) {
return;
}
$cid = 0;
$tagid = 0;
if (in_array($type, [self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION, self::TO, self::CC, self::BTO, self::BCC])) {
if (empty($url)) {
// No mention without a contact url
return;
}
if ((substr($url, 0, 7) == 'https//') || (substr($url, 0, 6) == 'http//')) {
Logger::notice('Wrong scheme in url', ['url' => $url, 'callstack' => System::callstack(20)]);
}
$cid = Contact::getIdForURL($url, 0, false);
Logger::debug('Got id for contact', ['cid' => $cid, 'url' => $url]);
if (empty($cid)) {
$tag = DBA::selectFirst('tag', ['name', 'type'], ['url' => $url]);
if (!empty($tag)) {
if ($tag['name'] != substr($name, 0, 96)) {
DBA::update('tag', ['name' => substr($name, 0, 96)], ['url' => $url]);
}
if (!empty($target) && ($tag['type'] != $target)) {
DBA::update('tag', ['type' => $target], ['url' => $url]);
}
}
}
}
if (empty($cid)) {
if (!in_array($type, [self::TO, self::CC, self::BTO, self::BCC])) {
if (($type != self::HASHTAG) && !empty($url) && ($url != $name)) {
$url = strtolower($url);
} else {
$url = '';
}
}
$tagid = self::getID($name, $url, $target);
if (empty($tagid)) {
return;
}
}
$fields = ['uri-id' => $uriId, 'type' => $type, 'tid' => $tagid, 'cid' => $cid];
if (in_array($type, [self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION])) {
$condition = $fields;
$condition['type'] = [self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION];
if (DBA::exists('post-tag', $condition)) {
Logger::info('Tag already exists', $fields);
return;
}
}
DBA::insert('post-tag', $fields, Database::INSERT_IGNORE);
Logger::debug('Stored tag/mention', ['uri-id' => $uriId, 'tag-id' => $tagid, 'contact-id' => $cid, 'name' => $name, 'type' => $type, 'callstack' => System::callstack(8)]);
}
/**
* Fetch the target type for the given url
*
* @param string $url
* @param bool $fetch Fetch information via network operations
* @return null|int
*/
public static function getTargetType(string $url, bool $fetch = true)
{
$target = null;
if (empty($url)) {
return $target;
}
$tag = DBA::selectFirst('tag', ['url', 'type'], ['url' => $url]);
if (!empty($tag['type'])) {
$target = $tag['type'];
if ($target != self::GENERAL_COLLECTION) {
Logger::debug('Found existing type', ['type' => $tag['type'], 'url' => $url]);
return $target;
}
}
if ($url == ActivityPub::PUBLIC_COLLECTION) {
$target = self::PUBLIC_COLLECTION;
Logger::debug('Public collection', ['url' => $url]);
} else {
if (DBA::exists('apcontact', ['followers' => $url])) {
$target = self::FOLLOWER_COLLECTION;
Logger::debug('Found collection via existing apcontact', ['url' => $url]);
} elseif (Contact::getIdForURL($url, 0, $fetch ? null : false)) {
$target = self::ACCOUNT;
Logger::debug('URL is an account', ['url' => $url]);
} elseif ($fetch && ($target != self::GENERAL_COLLECTION)) {
$content = ActivityPub::fetchContent($url);
if (!empty($content['type']) && ($content['type'] == 'OrderedCollection')) {
$target = self::GENERAL_COLLECTION;
Logger::debug('URL is an ordered collection', ['url' => $url]);
}
}
}
if (!empty($target) && !empty($tag['url']) && ($tag['type'] != $target)) {
DBA::update('tag', ['type' => $target], ['url' => $url]);
}
if (empty($target)) {
Logger::debug('No type could be detected', ['url' => $url]);
}
return $target;
}
/**
* Get a tag id for a given tag name and URL
*
* @param string $name Name of tag
* @param string $url
* @param int $type Type of tag
* @return int Tag id
*/
public static function getID(string $name, string $url = '', int $type = null): int
{
$fields = ['name' => substr($name, 0, 96), 'url' => $url];
$tag = DBA::selectFirst('tag', ['id', 'type'], $fields);
if (DBA::isResult($tag)) {
if (empty($tag['type']) && !empty($type)) {
DBA::update('tag', ['type' => $type], $fields);
}
return $tag['id'];
}
if (!empty($type)) {
$fields['type'] = $type;
}
DBA::insert('tag', $fields, Database::INSERT_IGNORE);
$tid = DBA::lastInsertId();
if (!empty($tid)) {
return $tid;
}
// Also log type
$fields['type'] = $type;
Logger::error('No tag id created', $fields);
return 0;
}
/**
* Store tag/mention elements
*
* @param integer $uriId
* @param string $hash
* @param string $name
* @param string $url
* @return void
*/
public static function storeByHash(int $uriId, string $hash, string $name, string $url = '')
{
$type = self::getTypeForHash($hash);
if ($type == self::UNKNOWN) {
return;
}
self::store($uriId, $type, $name, $url);
}
/**
* Get tags and mentions from the body
*
* @param string $body Body of the post
* @param string $tags Accepted tags
*
* @return array Tag list
*/
public static function getFromBody(string $body, string $tags = null): array
{
if (is_null($tags)) {
$tags = self::TAG_CHARACTER[self::HASHTAG] . self::TAG_CHARACTER[self::MENTION] . self::TAG_CHARACTER[self::EXCLUSIVE_MENTION];
}
if (!preg_match_all("/([" . $tags . "])\[url\=([^\[\]]*)\]([^\[\]]*)\[\/url\]/ism", $body, $result, PREG_SET_ORDER)) {
return [];
}
return $result;
}
/**
* Store tags and mentions from the body
*
* @param integer $uriId URI-Id
* @param string $body Body of the post
* @param string $tags Accepted tags
* @return void
*/
public static function storeFromBody(int $uriId, string $body, string $tags = null)
{
$item = ['uri-id' => $uriId, 'body' => $body, 'quote-uri-id' => null];
self::storeFromArray($item, $tags);
}
/**
* Store tags and mentions from the item array
*
* @param array $item Item array
* @param string $tags Accepted tags
* @return void
*/
public static function storeFromArray(array $item, string $tags = null)
{
Logger::info('Check for tags', ['uri-id' => $item['uri-id'], 'hash' => $tags, 'callstack' => System::callstack()]);
if (is_null($tags)) {
$tags = self::TAG_CHARACTER[self::HASHTAG] . self::TAG_CHARACTER[self::MENTION] . self::TAG_CHARACTER[self::EXCLUSIVE_MENTION];
}
foreach (self::getFromBody($item['body'], $tags) as $tag) {
self::storeByHash($item['uri-id'], $tag[1], $tag[3], $tag[2]);
}
$shared = DI::contentItem()->getSharedPost($item, ['uri-id']);
// Search for hashtags in the shared body (but only if hashtags are wanted)
if (!empty($shared) && (strpos($tags, self::TAG_CHARACTER[self::HASHTAG]) !== false)) {
foreach (self::getByURIId($shared['post']['uri-id'], [self::HASHTAG]) as $tag) {
self::store($item['uri-id'], $tag['type'], $tag['name'], $tag['url']);
}
}
}
/**
* Store raw tags (not encapsulated in links) from the body
* This function is needed in the intermediate phase.
* Later we can call item::setHashtags in advance to have all tags converted.
*
* @param integer $uriId URI-Id
* @param string $body Body of the post
* @return void
*/
public static function storeRawTagsFromBody(int $uriId, string $body)
{
Logger::info('Check for tags', ['uri-id' => $uriId, 'callstack' => System::callstack()]);
$result = BBCode::getTags($body);
if (empty($result)) {
return;
}
Logger::info('Found tags', ['uri-id' => $uriId, 'result' => $result]);
foreach ($result as $tag) {
if (substr($tag, 0, 1) != self::TAG_CHARACTER[self::HASHTAG]) {
continue;
}
self::storeByHash($uriId, substr($tag, 0, 1), substr($tag, 1));
}
}
/**
* Checks for stored hashtags and mentions for the given post
*
* @param integer $uriId
* @return bool
*/
public static function existsForPost(int $uriId): bool
{
return DBA::exists('post-tag', ['uri-id' => $uriId, 'type' => [self::HASHTAG, self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION]]);
}
/**
* Remove tag/mention
*
* @param integer $uriId
* @param integer $type Type
* @param string $name Name
* @param string $url URL
* @return void
*/
public static function remove(int $uriId, int $type, string $name, string $url = '')
{
$condition = ['uri-id' => $uriId, 'type' => $type, 'url' => $url];
if ($type == self::HASHTAG) {
$condition['name'] = $name;
}
$tag = DBA::selectFirst('tag-view', ['tid', 'cid'], $condition);
if (!DBA::isResult($tag)) {
return;
}
Logger::debug('Removing tag/mention', ['uri-id' => $uriId, 'tid' => $tag['tid'], 'name' => $name, 'url' => $url, 'callstack' => System::callstack(8)]);
DBA::delete('post-tag', ['uri-id' => $uriId, 'type' => $type, 'tid' => $tag['tid'], 'cid' => $tag['cid']]);
}
/**
* Remove tag/mention
*
* @param integer $uriId
* @param string $hash
* @param string $name
* @param string $url
* @return void
*/
public static function removeByHash(int $uriId, string $hash, string $name, string $url = '')
{
$type = self::getTypeForHash($hash);
if ($type == self::UNKNOWN) {
return;
}
self::remove($uriId, $type, $name, $url);
}
/**
* Get the type for the given hash
*
* @param string $hash
* @return integer Tag type
*/
private static function getTypeForHash(string $hash): int
{
if ($hash == self::TAG_CHARACTER[self::MENTION]) {
return self::MENTION;
} elseif ($hash == self::TAG_CHARACTER[self::EXCLUSIVE_MENTION]) {
return self::EXCLUSIVE_MENTION;
} elseif ($hash == self::TAG_CHARACTER[self::IMPLICIT_MENTION]) {
return self::IMPLICIT_MENTION;
} elseif ($hash == self::TAG_CHARACTER[self::HASHTAG]) {
return self::HASHTAG;
} else {
return self::UNKNOWN;
}
}
/**
* Create implicit mentions for a given post
*
* @param integer $uriId
* @param integer $parentUriId
* @return void
*/
public static function createImplicitMentions(int $uriId, int $parentUriId)
{
// Always mention the direct parent author
$parent = Post::selectFirst(['author-link', 'author-name'], ['uri-id' => $parentUriId]);
self::store($uriId, self::IMPLICIT_MENTION, $parent['author-name'], $parent['author-link']);
if (DI::config()->get('system', 'disable_implicit_mentions')) {
return;
}
$tags = DBA::select('tag-view', ['name', 'url'], ['uri-id' => $parentUriId, 'type' => [self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION]]);
while ($tag = DBA::fetch($tags)) {
self::store($uriId, self::IMPLICIT_MENTION, $tag['name'], $tag['url']);
}
DBA::close($tags);
}
/**
* Retrieves the terms from the provided type(s) associated with the provided item ID.
*
* @param int $uriId
* @param array $type Tag type(s)
* @return array|bool Array on success, false on error
* @throws \Exception
*/
public static function getByURIId(int $uriId, array $type = [self::HASHTAG, self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION])
{
$condition = ['uri-id' => $uriId, 'type' => $type];
return DBA::selectToArray('tag-view', ['type', 'name', 'url', 'tag-type'], $condition);
}
/**
* Checks if the given url is mentioned in the post
*
* @param integer $uriId
* @param string $url
* @param array $type
*
* @return boolean
*/
public static function isMentioned(int $uriId, string $url, array $type = [self::MENTION, self::EXCLUSIVE_MENTION]): bool
{
$tags = self::getByURIId($uriId, $type);
foreach ($tags as $tag) {
if (Strings::compareLink($url, $tag['url'])) {
return true;
}
}
return false;
}
/**
* Return a string with all tags and mentions
*
* @param integer $uriId
* @param array $type Tag type(s)
* @return string tags and mentions
* @throws \Exception
*/
public static function getCSVByURIId(int $uriId, array $type = [self::HASHTAG, self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION]): string
{
$tag_list = [];
foreach (self::getByURIId($uriId, $type) as $tag) {
$tag_list[] = self::TAG_CHARACTER[$tag['type']] . '[url=' . $tag['url'] . ']' . $tag['name'] . '[/url]';
}
return implode(',', $tag_list);
}
/**
* Sorts an item's tags into mentions, hashtags and other tags. Generate personalized URLs by user and modify the
* provided item's body with them.
*
* @param array $item
* @return array
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function populateFromItem(array &$item): array
{
$return = [
'tags' => [],
'hashtags' => [],
'mentions' => [],
'implicit_mentions' => [],
];
$searchpath = DI::baseUrl() . '/search?tag=';
$taglist = DBA::select('tag-view', ['type', 'name', 'url', 'cid'],
['uri-id' => $item['uri-id'], 'type' => [self::HASHTAG, self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION]]);
while ($tag = DBA::fetch($taglist)) {
if ($tag['url'] == '') {
$tag['url'] = $searchpath . rawurlencode($tag['name']);
}
$orig_tag = $tag['url'];
$prefix = self::TAG_CHARACTER[$tag['type']];
switch($tag['type']) {
case self::HASHTAG:
if ($orig_tag != $tag['url']) {
$item['body'] = str_replace($orig_tag, $tag['url'], $item['body']);
}
$return['hashtags'][] = '<bdi>' . $prefix . '<a href="' . $tag['url'] . '" target="_blank" rel="noopener noreferrer">' . htmlspecialchars($tag['name']) . '</a></bdi>';
$return['tags'][] = '<bdi>' . $prefix . '<a href="' . $tag['url'] . '" target="_blank" rel="noopener noreferrer">' . htmlspecialchars($tag['name']) . '</a></bdi>';
break;
case self::MENTION:
case self::EXCLUSIVE_MENTION:
if (!empty($tag['cid'])) {
$tag['url'] = Contact::magicLinkById($tag['cid']);
} else {
$tag['url'] = Contact::magicLink($tag['url']);
}
$return['mentions'][] = '<bdi>' . $prefix . '<a href="' . $tag['url'] . '" target="_blank" rel="noopener noreferrer">' . htmlspecialchars($tag['name']) . '</a></bdi>';
$return['tags'][] = '<bdi>' . $prefix . '<a href="' . $tag['url'] . '" target="_blank" rel="noopener noreferrer">' . htmlspecialchars($tag['name']) . '</a></bdi>';
break;
case self::IMPLICIT_MENTION:
$return['implicit_mentions'][] = $prefix . $tag['name'];
break;
default:
Logger::warning('Unknown tag type found', $tag);
}
}
DBA::close($taglist);
return $return;
}
/**
* Counts posts for given tag
*
* @param string $search
* @param integer $uid
* @return integer number of posts
*/
public static function countByTag(string $search, int $uid = 0): int
{
$condition = ["`name` = ? AND (`uid` = ? OR (`uid` = ? AND NOT `global`))
AND (`network` IN (?, ?, ?, ?) OR (`uid` = ? AND `uid` != ?))",
$search, 0, $uid,
Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, $uid, 0,
];
return DBA::count('tag-search-view', $condition);
}
/**
* Search posts for given tag
*
* @param string $search Tag to search for
* @param integer $uid User Id
* @param integer $start Starting record
* @param integer $limit Maximum count of records
* @param integer $last_uriid
* @return array with URI-ID
*/
public static function getURIIdListByTag(string $search, int $uid = 0, int $start = 0, int $limit = 100, int $last_uriid = 0): array
{
$condition = ["`name` = ? AND (`uid` = ? OR (`uid` = ? AND NOT `global`))
AND (`network` IN (?, ?, ?, ?) OR (`uid` = ? AND `uid` != ?))",
$search, 0, $uid,
Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, $uid, 0,
];
if (!empty($last_uriid)) {
$condition = DBA::mergeConditions($condition, ["`uri-id` < ?", $last_uriid]);
}
$params = [
'order' => ['uri-id' => true],
'limit' => [$start, $limit]
];
$tags = DBA::select('tag-search-view', ['uri-id'], $condition, $params);
$uriIds = [];
while ($tag = DBA::fetch($tags)) {
$uriIds[] = $tag['uri-id'];
}
DBA::close($tags);
return $uriIds;
}
/**
* Returns a list of the most frequent global hashtags over the given period
*
* @param int $period Period in hours to consider posts
* @param int $limit Number of returned tags
* @return array
* @throws \Exception
*/
public static function getGlobalTrendingHashtags(int $period, $limit = 10): array
{
$tags = DI::cache()->get('global_trending_tags-' . $period . '-' . $limit);
if (!empty($tags)) {
return $tags;
} else {
return self::setGlobalTrendingHashtags($period, $limit);
}
}
/**
* Fetch the blocked tags as SQL
*
* @return string SQL for blocked tag names or empty string
*/
private static function getBlockedSQL(): string
{
$blocked_txt = DI::config()->get('system', 'blocked_tags');
if (empty($blocked_txt)) {
return '';
}
$blocked = explode(',', $blocked_txt);
array_walk($blocked, function(&$value) { $value = "'" . DBA::escape(trim($value)) . "'";});
return ' AND NOT `name` IN (' . implode(',', $blocked) . ')';
}
/**
* Creates a list of the most frequent global hashtags over the given period
*
* @param int $period Period in hours to consider posts
* @param int $limit Number of returned tags
* @return array
* @throws \Exception
*/
public static function setGlobalTrendingHashtags(int $period, int $limit = 10): array
{
/*
* Get a uri-id that is at least X hours old.
* We use the uri-id in the query for the hash tags since this is much faster
*/
$post = Post::selectFirstThread(['uri-id'], ["`uid` = ? AND `received` < ?", 0, DateTimeFormat::utc('now - ' . $period . ' hour')],
['order' => ['received' => true]]);
if (empty($post['uri-id'])) {
return [];
}
$block_sql = self::getBlockedSQL();
$tagsStmt = DBA::p("SELECT `name` AS `term`, COUNT(*) AS `score`, COUNT(DISTINCT(`author-id`)) as `authors`
FROM `tag-search-view`
WHERE `private` = ? AND `uid` = ? AND `uri-id` > ? $block_sql
GROUP BY `term` ORDER BY `authors` DESC, `score` DESC LIMIT ?",
Item::PUBLIC, 0, $post['uri-id'],
$limit
);
if (DBA::isResult($tagsStmt)) {
$tags = DBA::toArray($tagsStmt);
DI::cache()->set('global_trending_tags-' . $period . '-' . $limit, $tags, Duration::DAY);
return $tags;
}
return [];
}
/**
* Returns a list of the most frequent local hashtags over the given period
*
* @param int $period Period in hours to consider posts
* @param int $limit Number of returned tags
* @return array
* @throws \Exception
*/
public static function getLocalTrendingHashtags(int $period, $limit = 10): array
{
$tags = DI::cache()->get('local_trending_tags-' . $period . '-' . $limit);
if (!empty($tags)) {
return $tags;
} else {
return self::setLocalTrendingHashtags($period, $limit);
}
}
/**
* Returns a list of the most frequent local hashtags over the given period
*
* @param int $period Period in hours to consider posts
* @param int $limit Number of returned tags
* @return array
* @throws \Exception
*/
public static function setLocalTrendingHashtags(int $period, int $limit = 10): array
{
// Get a uri-id that is at least X hours old.
// We use the uri-id in the query for the hash tags since this is much faster
$post = Post::selectFirstThread(['uri-id'], ["`uid` = ? AND `received` < ?", 0, DateTimeFormat::utc('now - ' . $period . ' hour')],
['order' => ['received' => true]]);
if (empty($post['uri-id'])) {
return [];
}
$block_sql = self::getBlockedSQL();
$tagsStmt = DBA::p("SELECT `name` AS `term`, COUNT(*) AS `score`, COUNT(DISTINCT(`author-id`)) as `authors`
FROM `tag-search-view`
WHERE `private` = ? AND `wall` AND `origin` AND `uri-id` > ? $block_sql
GROUP BY `term` ORDER BY `authors` DESC, `score` DESC LIMIT ?",
Item::PUBLIC, $post['uri-id'],
$limit
);
if (DBA::isResult($tagsStmt)) {
$tags = DBA::toArray($tagsStmt);
DI::cache()->set('local_trending_tags-' . $period . '-' . $limit, $tags, Duration::DAY);
return $tags;
}
return [];
}
/**
* Check if the provided tag is of one of the provided term types.
*
* @param string $tag Tag name
* @param int ...$types
* @return bool
*/
public static function isType(string $tag, ...$types): bool
{
$tag_chars = [];
foreach ($types as $type) {
if (array_key_exists($type, self::TAG_CHARACTER)) {
$tag_chars[] = self::TAG_CHARACTER[$type];
}
}
return Strings::startsWithChars($tag, $tag_chars);
}
/**
* Fetch user who subscribed to the given tag
*
* @param string $tag
* @return array User list
*/
private static function getUIDListByTag(string $tag): array
{
$uids = [];
$searches = DBA::select('search', ['uid'], ['term' => $tag]);
while ($search = DBA::fetch($searches)) {
$uids[] = $search['uid'];
}
DBA::close($searches);
return $uids;
}
/**
* Fetch user who subscribed to the tags of the given item
*
* @param integer $uriId
* @return array User list
*/
public static function getUIDListByURIId(int $uriId): array
{
$uids = [];
$tags = self::getByURIId($uriId, [self::HASHTAG]);
foreach ($tags as $tag) {
$uids = array_merge($uids, self::getUIDListByTag(self::TAG_CHARACTER[self::HASHTAG] . $tag['name']));
}
return array_unique($uids);
}
}