friendica-github/src/Model/Tag.php

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<?php
/**
* @copyright Copyright (C) 2020, Friendica
*
* @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\Core\Logger;
use Friendica\Database\DBA;
use Friendica\Content\Text\BBCode;
/**
* 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;
const CATEGORY = 3;
const FILE = 5;
/**
* An implicit mention is a mention in a comment body that is redundant with the threading information.
*/
const IMPLICIT_MENTION = 8;
/**
* An exclusive mention transfers the ownership of the post to the target account, usually a forum.
*/
const EXCLUSIVE_MENTION = 9;
const TAG_CHARACTER = [
self::HASHTAG => '#',
self::MENTION => '@',
self::IMPLICIT_MENTION => '%',
self::EXCLUSIVE_MENTION => '!',
];
/**
* Store tags from the body
*
* @param integer $uriid
* @param string $body
*/
public static function storeFromBody(int $uriid, string $body)
{
$tags = BBCode::getTags($body);
if (empty($tags)) {
return;
}
foreach ($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' => $tag]);
continue;
}
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$fields = ['uri-id' => $uriid, 'name' => substr($tag, 1, 64), 'type' => self::HASHTAG];
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DBA::insert('tag', $fields, true);
Logger::info('Stored tag', ['uriid' => $uriid, 'tag' => $tag, 'fields' => $fields]);
}
}
}