mirror of
https://github.com/friendica/friendica
synced 2024-09-27 04:34:23 +02:00
163 lines
4 KiB
PHP
163 lines
4 KiB
PHP
<?php
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/*
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* @file src/Content/Widget/TagCloud.php
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*/
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namespace Friendica\Content\Widget;
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use Friendica\Core\L10n;
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use Friendica\Core\System;
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use Friendica\Database\DBA;
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use Friendica\Model\Item;
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use Friendica\Util\Security;
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require_once 'include/dba.php';
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/**
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* TagCloud widget
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*
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* @author Rabuzarus
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*/
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class TagCloud
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{
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/**
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* Construct a tag/term cloud block for an user.
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*
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* @brief Construct a tag/term cloud block for an user.
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* @param int $uid The user ID.
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* @param int $count Max number of displayed tags/terms.
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* @param int $owner_id The contact ID of the owner of the tagged items.
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* @param string $flags Special item flags.
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* @param int $type The tag/term type.
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*
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* @return string HTML formatted output.
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*/
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public static function getHTML($uid, $count = 0, $owner_id = 0, $flags = '', $type = TERM_HASHTAG)
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{
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$o = '';
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$r = self::tagadelic($uid, $count, $owner_id, $flags, $type);
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if (count($r)) {
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$contact = DBA::selectFirst('contact', ['url'], ['uid' => $uid, 'self' => true]);
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$url = System::removedBaseUrl($contact['url']);
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foreach ($r as $rr) {
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$tag['level'] = $rr[2];
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$tag['url'] = $url . '?tag=' . urlencode($rr[0]);
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$tag['name'] = $rr[0];
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$tags[] = $tag;
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}
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$tpl = get_markup_template('tagblock_widget.tpl');
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$o = replace_macros($tpl, [
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'$title' => L10n::t('Tags'),
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'$tags' => $tags
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]);
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}
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return $o;
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}
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/**
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* Get alphabetical sorted array of used tags/terms of an user including
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* a weighting by frequency of use.
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*
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* @brief Get alphabetical sorted array of used tags/terms of an user including
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* a weighting by frequency of use.
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* @param int $uid The user ID.
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* @param int $count Max number of displayed tags/terms.
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* @param int $owner_id The contact id of the owner of the tagged items.
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* @param string $flags Special item flags.
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* @param int $type The tag/term type.
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*
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* @return arr Alphabetical sorted array of used tags of an user.
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*/
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private static function tagadelic($uid, $count = 0, $owner_id = 0, $flags = '', $type = TERM_HASHTAG)
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{
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$sql_options = Item::getPermissionsSQLByUserId($uid);
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$limit = $count ? sprintf('LIMIT %d', intval($count)) : '';
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if ($flags) {
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if ($flags === 'wall') {
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$sql_options .= ' AND `item`.`wall` ';
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}
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}
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if ($owner_id) {
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$sql_options .= ' AND `item`.`owner-id` = ' . intval($owner_id) . ' ';
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}
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// Fetch tags
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$r = DBA::p("SELECT `term`, COUNT(`term`) AS `total` FROM `term`
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LEFT JOIN `item` ON `term`.`oid` = `item`.`id`
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WHERE `term`.`uid` = ? AND `term`.`type` = ?
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AND `term`.`otype` = ?
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AND `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
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$sql_options
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GROUP BY `term` ORDER BY `total` DESC $limit",
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$uid,
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$type,
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TERM_OBJ_POST
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);
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if (!DBA::isResult($r)) {
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return [];
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}
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return self::tagCalc($r);
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}
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/**
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* Calculate weighting of tags according to the frequency of use.
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*
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* @brief Calculate weighting of tags according to the frequency of use.
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* @param array $arr Array of tags/terms with tag/term name and total count of use.
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* @return array Alphabetical sorted array of used tags/terms of an user.
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*/
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private static function tagCalc($arr)
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{
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$tags = [];
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$min = 1e9;
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$max = -1e9;
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$x = 0;
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if (!$arr) {
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return [];
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}
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foreach ($arr as $rr) {
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$tags[$x][0] = $rr['term'];
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$tags[$x][1] = log($rr['total']);
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$tags[$x][2] = 0;
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$min = min($min, $tags[$x][1]);
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$max = max($max, $tags[$x][1]);
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$x ++;
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}
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usort($tags, 'self::tagsSort');
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$range = max(.01, $max - $min) * 1.0001;
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for ($x = 0; $x < count($tags); $x ++) {
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$tags[$x][2] = 1 + floor(9 * ($tags[$x][1] - $min) / $range);
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}
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return $tags;
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}
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/**
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* Compare function to sort tags/terms alphabetically.
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*
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* @brief Compare function to sort tags/terms alphabetically.
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* @param type $a
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* @param type $b
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*
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* @return int
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*/
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private static function tagsSort($a, $b)
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{
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if (strtolower($a[0]) == strtolower($b[0])) {
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return 0;
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}
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return ((strtolower($a[0]) < strtolower($b[0])) ? -1 : 1);
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}
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}
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