misuzu/public/forum/topic-priority.php

<?php
require_once '../../misuzu.php';

if(!MSZ_DEBUG) {
    return;
}

$topicId = !empty($_GET['t']) && is_string($_GET['t']) ? (int)$_GET['t'] : 0;
$topicUserId = user_session_current('user_id', 0);

if($topicUserId < 1) {
    echo render_error(403);
    return;
}

$topic = forum_topic_get($topicId, true);
$perms = $topic
    ? forum_perms_get_user($topic['forum_id'], $topicUserId)[MSZ_FORUM_PERMS_GENERAL]
    : 0;

if(user_warning_check_restriction($topicUserId)) {
    $perms &= ~MSZ_FORUM_PERM_SET_WRITE;
}

$topicIsDeleted = !empty($topic['topic_deleted']);
$canDeleteAny = perms_check($perms, MSZ_FORUM_PERM_DELETE_ANY_POST);

if(!$topic || ($topicIsDeleted && !$canDeleteAny)) {
    echo render_error(404);
    return;
}

if(!perms_check($perms, MSZ_FORUM_PERM_VIEW_FORUM, true) // | MSZ_FORUM_PERM_PRIORITY_VOTE
    || !$canDeleteAny
    && (
        !empty($topic['topic_locked'])
        || !empty($topic['topic_archived'])
    )
) {
    echo render_error(403);
    return;
}

if(!forum_has_priority_voting($topic['forum_type'])) {
    echo render_error(400);
    return;
}

forum_topic_priority_increase($topicId, user_session_current('user_id', 0));

url_redirect('forum-topic', ['topic' => $topicId]);