mirror of https://github.com/friendica/friendica
128 lines
3.4 KiB
PHP
128 lines
3.4 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2020, Friendica
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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\Core\Logger;
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use Friendica\Database\DBA;
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use Friendica\Content\Text\BBCode;
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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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const CATEGORY = 3;
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const FILE = 5;
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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 transfers the ownership of the post to the target account, usually a forum.
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*/
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const EXCLUSIVE_MENTION = 9;
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const TAG_CHARACTER = [
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self::HASHTAG => '#',
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self::MENTION => '@',
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self::IMPLICIT_MENTION => '%',
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self::EXCLUSIVE_MENTION => '!',
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];
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public static function store(int $uriid, int $type, string $name, string $url = '')
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{
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$name = trim($name, "\x00..\x20\xFF#!@");
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if (empty($name)) {
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return;
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}
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$fields = ['name' => substr($name, 0, 64), 'type' => $type];
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if (!empty($url) && ($url != $name)) {
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$fields['url'] = strtolower($url);
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}
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$tag = DBA::selectFirst('tag', ['id'], $fields);
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if (!DBA::isResult($tag)) {
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DBA::insert('tag', $fields, true);
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$tagid = DBA::lastInsertId();
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} else {
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$tagid = $tag['id'];
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}
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if (empty($tagid)) {
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Logger::error('No tag id created', $fields);
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return;
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}
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DBA::insert('post-tag', ['uri-id' => $uriid, 'tid' => $tagid], true);
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Logger::info('Stored tag/mention', ['uri-id' => $uriid, 'tag-id' => $tagid, 'tag' => $fields]);
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}
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public static function storeByHash(int $uriid, string $hash, string $name, string $url = '')
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{
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if ($hash == self::TAG_CHARACTER[self::MENTION]) {
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$type = self::MENTION;
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} elseif ($hash == self::TAG_CHARACTER[self::EXCLUSIVE_MENTION]) {
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$type = self::EXCLUSIVE_MENTION;
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} elseif ($hash == self::TAG_CHARACTER[self::IMPLICIT_MENTION]) {
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$type = self::IMPLICIT_MENTION;
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} elseif ($hash == self::TAG_CHARACTER[self::HASHTAG]) {
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$type = self::HASHTAG;
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} else {
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return;
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}
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self::store($uriid, $type, $name, $url);
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}
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/**
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* Store tags from the body
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*
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* @param integer $uriid
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* @param string $body
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*/
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public static function storeFromBody(int $uriid, string $body)
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{
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$tags = BBCode::getTags($body);
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if (empty($tags)) {
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return;
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}
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foreach ($tags as $tag) {
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if ((substr($tag, 0, 1) != self::TAG_CHARACTER[self::HASHTAG]) || (strlen($tag) <= 1)) {
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Logger::info('Skip tag', ['uriid' => $uriid, 'tag' => $tag]);
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continue;
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}
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self::storeByHash($uriid, '#', $tag);
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}
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}
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}
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