mirror of https://github.com/friendica/friendica
817 lines
24 KiB
PHP
817 lines
24 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2022, the Friendica project
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program 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
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Model;
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use Friendica\Content\Text\BBCode;
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use Friendica\Core\Cache\Enum\Duration;
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use Friendica\Core\Logger;
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use Friendica\Core\Protocol;
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use Friendica\Core\System;
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use Friendica\Database\Database;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Protocol\ActivityPub;
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use Friendica\Util\DateTimeFormat;
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use Friendica\Util\Strings;
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/**
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* Class Tag
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*
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* This Model class handles tag table interactions.
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* This tables stores relevant tags related to posts, like hashtags and mentions.
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*/
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class Tag
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{
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const UNKNOWN = 0;
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const HASHTAG = 1;
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const MENTION = 2;
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/**
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* An implicit mention is a mention in a comment body that is redundant with the threading information.
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*/
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const IMPLICIT_MENTION = 8;
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/**
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* An exclusive mention transmits the post only to the target account without transmitting it to the followers, usually a forum.
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*/
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const EXCLUSIVE_MENTION = 9;
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const TO = 10;
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const CC = 11;
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const BTO = 12;
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const BCC = 13;
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const ACCOUNT = 1;
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const GENERAL_COLLECTION = 2;
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const FOLLOWER_COLLECTION = 3;
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const PUBLIC_COLLECTION = 4;
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const TAG_CHARACTER = [
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self::HASHTAG => '#',
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self::MENTION => '@',
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self::EXCLUSIVE_MENTION => '!',
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self::IMPLICIT_MENTION => '%',
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];
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/**
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* Store tag/mention elements
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*
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* @param integer $uriId
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* @param integer $type Tag type
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* @param string $name Tag name
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* @param string $url Contact URL (optional)
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* @param integer $target Target (default: null)
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* @return void
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*/
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public static function store(int $uriId, int $type, string $name, string $url = '', int $target = null)
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{
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if ($type == self::HASHTAG) {
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// Trim Unicode non-word characters
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$name = preg_replace('/(^\W+)|(\W+$)/us', '', $name);
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$tags = explode(self::TAG_CHARACTER[self::HASHTAG], $name);
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if (count($tags) > 1) {
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foreach ($tags as $tag) {
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self::store($uriId, $type, $tag, $url);
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}
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return;
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}
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}
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if (empty($name)) {
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return;
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}
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$cid = 0;
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$tagid = 0;
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if (in_array($type, [self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION, self::TO, self::CC, self::BTO, self::BCC])) {
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if (empty($url)) {
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// No mention without a contact url
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return;
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}
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if ((substr($url, 0, 7) == 'https//') || (substr($url, 0, 6) == 'http//')) {
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Logger::notice('Wrong scheme in url', ['url' => $url, 'callstack' => System::callstack(20)]);
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}
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$cid = Contact::getIdForURL($url, 0, false);
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Logger::debug('Got id for contact', ['cid' => $cid, 'url' => $url]);
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if (empty($cid)) {
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$tag = DBA::selectFirst('tag', ['name', 'type'], ['url' => $url]);
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if (!empty($tag)) {
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if ($tag['name'] != substr($name, 0, 96)) {
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DBA::update('tag', ['name' => substr($name, 0, 96)], ['url' => $url]);
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}
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if (!empty($target) && ($tag['type'] != $target)) {
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DBA::update('tag', ['type' => $target], ['url' => $url]);
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}
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}
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}
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}
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if (empty($cid)) {
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if (!in_array($type, [self::TO, self::CC, self::BTO, self::BCC])) {
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if (($type != self::HASHTAG) && !empty($url) && ($url != $name)) {
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$url = strtolower($url);
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} else {
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$url = '';
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}
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}
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$tagid = self::getID($name, $url, $target);
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if (empty($tagid)) {
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return;
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}
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}
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$fields = ['uri-id' => $uriId, 'type' => $type, 'tid' => $tagid, 'cid' => $cid];
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if (in_array($type, [self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION])) {
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$condition = $fields;
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$condition['type'] = [self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION];
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if (DBA::exists('post-tag', $condition)) {
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Logger::info('Tag already exists', $fields);
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return;
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}
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}
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DBA::insert('post-tag', $fields, Database::INSERT_IGNORE);
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Logger::debug('Stored tag/mention', ['uri-id' => $uriId, 'tag-id' => $tagid, 'contact-id' => $cid, 'name' => $name, 'type' => $type, 'callstack' => System::callstack(8)]);
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}
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/**
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* Fetch the target type for the given url
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*
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* @param string $url
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* @param bool $fetch Fetch information via network operations
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* @return null|int
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*/
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public static function getTargetType(string $url, bool $fetch = true)
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{
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$target = null;
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if (empty($url)) {
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return $target;
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}
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$tag = DBA::selectFirst('tag', ['url', 'type'], ['url' => $url]);
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if (!empty($tag['type'])) {
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$target = $tag['type'];
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if ($target != self::GENERAL_COLLECTION) {
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Logger::debug('Found existing type', ['type' => $tag['type'], 'url' => $url]);
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return $target;
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}
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}
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if ($url == ActivityPub::PUBLIC_COLLECTION) {
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$target = self::PUBLIC_COLLECTION;
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Logger::debug('Public collection', ['url' => $url]);
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} else {
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if (DBA::exists('apcontact', ['followers' => $url])) {
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$target = self::FOLLOWER_COLLECTION;
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Logger::debug('Found collection via existing apcontact', ['url' => $url]);
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} elseif (Contact::getIdForURL($url, 0, $fetch ? null : false)) {
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$target = self::ACCOUNT;
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Logger::debug('URL is an account', ['url' => $url]);
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} elseif ($fetch && ($target != self::GENERAL_COLLECTION)) {
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$content = ActivityPub::fetchContent($url);
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if (!empty($content['type']) && ($content['type'] == 'OrderedCollection')) {
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$target = self::GENERAL_COLLECTION;
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Logger::debug('URL is an ordered collection', ['url' => $url]);
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}
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}
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}
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if (!empty($target) && !empty($tag['url']) && ($tag['type'] != $target)) {
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DBA::update('tag', ['type' => $target], ['url' => $url]);
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}
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if (empty($target)) {
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Logger::debug('No type could be detected', ['url' => $url]);
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}
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return $target;
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}
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/**
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* Get a tag id for a given tag name and URL
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*
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* @param string $name Name of tag
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* @param string $url
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* @param int $type Type of tag
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* @return int Tag id
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*/
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public static function getID(string $name, string $url = '', int $type = null): int
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{
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$fields = ['name' => substr($name, 0, 96), 'url' => $url];
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$tag = DBA::selectFirst('tag', ['id', 'type'], $fields);
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if (DBA::isResult($tag)) {
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if (empty($tag['type']) && !empty($type)) {
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DBA::update('tag', ['type' => $type], $fields);
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}
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return $tag['id'];
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}
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if (!empty($type)) {
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$fields['type'] = $type;
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}
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DBA::insert('tag', $fields, Database::INSERT_IGNORE);
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$tid = DBA::lastInsertId();
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if (!empty($tid)) {
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return $tid;
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}
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// Also log type
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$fields['type'] = $type;
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Logger::error('No tag id created', $fields);
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return 0;
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}
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/**
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* Store tag/mention elements
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*
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* @param integer $uriId
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* @param string $hash
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* @param string $name
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* @param string $url
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* @param boolean $probing Whether probing is active
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* @return void
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*/
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public static function storeByHash(int $uriId, string $hash, string $name, string $url = '', bool $probing = true)
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{
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$type = self::getTypeForHash($hash);
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if ($type == self::UNKNOWN) {
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return;
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}
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self::store($uriId, $type, $name, $url, $probing);
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}
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/**
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* Get tags and mentions from the body
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*
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* @param string $body Body of the post
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* @param string $tags Accepted tags
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*
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* @return array Tag list
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*/
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public static function getFromBody(string $body, string $tags = null): array
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{
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if (is_null($tags)) {
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$tags = self::TAG_CHARACTER[self::HASHTAG] . self::TAG_CHARACTER[self::MENTION] . self::TAG_CHARACTER[self::EXCLUSIVE_MENTION];
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}
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if (!preg_match_all("/([" . $tags . "])\[url\=([^\[\]]*)\]([^\[\]]*)\[\/url\]/ism", $body, $result, PREG_SET_ORDER)) {
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return [];
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}
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return $result;
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}
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/**
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* Store tags and mentions from the body
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*
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* @param integer $uriId URI-Id
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* @param string $body Body of the post
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* @param string $tags Accepted tags
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* @param boolean $probing Perform a probing for contacts, adding them if needed
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* @return void
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*/
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public static function storeFromBody(int $uriId, string $body, string $tags = null, bool $probing = true)
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{
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Logger::info('Check for tags', ['uri-id' => $uriId, 'hash' => $tags, 'callstack' => System::callstack()]);
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if (is_null($tags)) {
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$tags = self::TAG_CHARACTER[self::HASHTAG] . self::TAG_CHARACTER[self::MENTION] . self::TAG_CHARACTER[self::EXCLUSIVE_MENTION];
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}
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// Only remove the shared data from "real" reshares
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$shared = BBCode::fetchShareAttributes($body);
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if (!empty($shared['guid'])) {
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if (preg_match("/\s*\[share .*?\](.*?)\[\/share\]\s*/ism", $body, $matches)) {
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$share_body = $matches[1];
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}
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$body = preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body);
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}
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foreach (self::getFromBody($body, $tags) as $tag) {
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self::storeByHash($uriId, $tag[1], $tag[3], $tag[2], $probing);
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}
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// Search for hashtags in the shared body (but only if hashtags are wanted)
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if (!empty($share_body) && (strpos($tags, self::TAG_CHARACTER[self::HASHTAG]) !== false)) {
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foreach (self::getFromBody($share_body, self::TAG_CHARACTER[self::HASHTAG]) as $tag) {
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self::storeByHash($uriId, $tag[1], $tag[3], $tag[2], $probing);
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}
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}
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}
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/**
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* Store raw tags (not encapsulated in links) from the body
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* This function is needed in the intermediate phase.
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* Later we can call item::setHashtags in advance to have all tags converted.
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*
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* @param integer $uriId URI-Id
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* @param string $body Body of the post
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* @return void
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*/
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public static function storeRawTagsFromBody(int $uriId, string $body)
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{
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Logger::info('Check for tags', ['uri-id' => $uriId, 'callstack' => System::callstack()]);
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$result = BBCode::getTags($body);
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if (empty($result)) {
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return;
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}
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Logger::info('Found tags', ['uri-id' => $uriId, 'result' => $result]);
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foreach ($result as $tag) {
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if (substr($tag, 0, 1) != self::TAG_CHARACTER[self::HASHTAG]) {
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continue;
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}
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self::storeByHash($uriId, substr($tag, 0, 1), substr($tag, 1));
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}
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}
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/**
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* Checks for stored hashtags and mentions for the given post
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*
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* @param integer $uriId
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* @return bool
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*/
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public static function existsForPost(int $uriId): bool
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{
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return DBA::exists('post-tag', ['uri-id' => $uriId, 'type' => [self::HASHTAG, self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION]]);
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}
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/**
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* Remove tag/mention
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*
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* @param integer $uriId
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* @param integer $type Type
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* @param string $name Name
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* @param string $url URL
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* @return void
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*/
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public static function remove(int $uriId, int $type, string $name, string $url = '')
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{
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$condition = ['uri-id' => $uriId, 'type' => $type, 'url' => $url];
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if ($type == self::HASHTAG) {
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$condition['name'] = $name;
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}
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$tag = DBA::selectFirst('tag-view', ['tid', 'cid'], $condition);
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if (!DBA::isResult($tag)) {
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return;
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}
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Logger::debug('Removing tag/mention', ['uri-id' => $uriId, 'tid' => $tag['tid'], 'name' => $name, 'url' => $url, 'callstack' => System::callstack(8)]);
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DBA::delete('post-tag', ['uri-id' => $uriId, 'type' => $type, 'tid' => $tag['tid'], 'cid' => $tag['cid']]);
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}
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/**
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* Remove tag/mention
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*
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* @param integer $uriId
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* @param string $hash
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* @param string $name
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* @param string $url
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* @return void
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*/
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public static function removeByHash(int $uriId, string $hash, string $name, string $url = '')
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{
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$type = self::getTypeForHash($hash);
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if ($type == self::UNKNOWN) {
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return;
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}
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self::remove($uriId, $type, $name, $url);
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}
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/**
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* Get the type for the given hash
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*
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* @param string $hash
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* @return integer Tag type
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*/
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private static function getTypeForHash(string $hash): int
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{
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if ($hash == self::TAG_CHARACTER[self::MENTION]) {
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return self::MENTION;
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} elseif ($hash == self::TAG_CHARACTER[self::EXCLUSIVE_MENTION]) {
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return self::EXCLUSIVE_MENTION;
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} elseif ($hash == self::TAG_CHARACTER[self::IMPLICIT_MENTION]) {
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return self::IMPLICIT_MENTION;
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} elseif ($hash == self::TAG_CHARACTER[self::HASHTAG]) {
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return self::HASHTAG;
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} else {
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return self::UNKNOWN;
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}
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}
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/**
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* Create implicit mentions for a given post
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*
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* @param integer $uriId
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* @param integer $parentUriId
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* @return void
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*/
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public static function createImplicitMentions(int $uriId, int $parentUriId)
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{
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// Always mention the direct parent author
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$parent = Post::selectFirst(['author-link', 'author-name'], ['uri-id' => $parentUriId]);
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self::store($uriId, self::IMPLICIT_MENTION, $parent['author-name'], $parent['author-link']);
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if (DI::config()->get('system', 'disable_implicit_mentions')) {
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return;
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}
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$tags = DBA::select('tag-view', ['name', 'url'], ['uri-id' => $parentUriId, 'type' => [self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION]]);
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while ($tag = DBA::fetch($tags)) {
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self::store($uriId, self::IMPLICIT_MENTION, $tag['name'], $tag['url']);
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}
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DBA::close($tags);
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}
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/**
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* Retrieves the terms from the provided type(s) associated with the provided item ID.
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*
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* @param int $uriId
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* @param array $type Tag type(s)
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* @return array|bool Array on success, false on error
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* @throws \Exception
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*/
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public static function getByURIId(int $uriId, array $type = [self::HASHTAG, self::MENTION, self::EXCLUSIVE_MENTION, self::IMPLICIT_MENTION])
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{
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$condition = ['uri-id' => $uriId, 'type' => $type];
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return DBA::selectToArray('tag-view', ['type', 'name', 'url', 'tag-type'], $condition);
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}
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/**
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* Checks if the given url is mentioned in the post
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*
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* @param integer $uriId
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* @param string $url
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* @param array $type
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*
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* @return boolean
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*/
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public static function isMentioned(int $uriId, string $url, array $type = [self::MENTION, self::EXCLUSIVE_MENTION]): bool
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{
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$tags = self::getByURIId($uriId, $type);
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foreach ($tags as $tag) {
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if (Strings::compareLink($url, $tag['url'])) {
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return true;
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}
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}
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return false;
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}
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/**
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* Return a string with all tags and mentions
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*
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* @param integer $uriId
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* @param array $type Tag type(s)
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* @return string tags and mentions
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* @throws \Exception
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*/
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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);
|
|
}
|
|
}
|