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<?php
$previd = $row['id'] - 1;
$nextid = $row['id'] + 1;
$row_next = $db->get_row($db->query("SELECT id,title,alt_name,date,category FROM " . PREFIX . "_post WHERE `id`='$nextid'"));
$row_prev = $db->get_row($db->query("SELECT id,title,alt_name,date,category FROM " . PREFIX . "_post WHERE `id`='$previd'"));
$row_max = $db->get_row($db->query("SELECT id FROM " . PREFIX . "_post ORDER BY id DESC"));

if ($config['allow_alt_url'] == "yes") {
    if ($config['seo_type'] == 1 OR $config['seo_type'] == 2) {
        if ($row['category'] and $config['seo_type'] == 2) {
            if ($nextid > $row_max['id']) {
                $next_link = '#';
            }
            else {
                $next_link = $config['http_home_url'] . get_url($row_next['category']) . "/" . $row_next['id'] . "-" . $row_next['alt_name'] . ".html";
            }

            if ($previd < 1) {
                $prev_link = '#';
            }
            else {
                $prev_link = $config['http_home_url'] . get_url($row_prev['category']) . "/" . $row_prev['id'] . "-" . $row_prev['alt_name'] . ".html";
            }
        }
        else {
            if ($nextid > $row_max['id']) {
                $next_link = '#';
            }
            else {
                $next_link = $config['http_home_url'] . $row_next['id'] . "-" . $row_next['alt_name'] . ".html";
            }

            if ($previd < 1) {
                $prev_link = '#';
            }
            else {
                $prev_link = $config['http_home_url'] . $row_prev['id'] . "-" . $row_prev['alt_name'] . ".html";
            }
        }
    }
    else {
        if ($nextid > $row_max['id']) {
            $next_link = '#';
        }
        else {
            $next_link = $config['http_home_url'] . date('Y/m/d/', $row_next['date']) . $row_next['alt_name'] . ".html";
        }

        if ($previd < 1) {
            $prev_link = '#';
        }
        else {
            $prev_link = $config['http_home_url'] . date('Y/m/d/', $row_prev['date']) . $row_prev['alt_name'] . ".html";
        }
    }
}
else {
    if ($nextid > $row_max['id']) {
        $next_link = '#';
    }
    else {
        $next_link = $config['http_home_url'] . "index.php?newsid=" . $row_next['id'];
    }

    if ($previd < 1) {
        $prev_link = '#';
    }
    else {
        $prev_link = $config['http_home_url'] . "index.php?newsid=" . $row_prev['id'];
    }
}

if ($nextid > $row_max['id']) {
    $tpl->set('{next.title}', 'Это последняя публикация!');
}
else {
    $tpl->set('{next.title}', $row_next['title']);
}

if ($previd < 1) {
    $tpl->set('{prev.title}', 'Это первая публикация!');
}
else {
    $tpl->set('{prev.title}', $row_prev['title']);
}

$tpl->set('{next.link}', $next_link);
$tpl->set('{prev.link}', $prev_link);