<?php
/**
 * TorrentPier – Bull-powered BitTorrent tracker engine
 *
 * @copyright Copyright (c) 2005-2023 TorrentPier (https://torrentpier.com)
 * @link      https://github.com/torrentpier/torrentpier for the canonical source repository
 * @license   https://github.com/torrentpier/torrentpier/blob/master/LICENSE MIT License
 */

define('BB_SCRIPT', 'callseed');
define('BB_ROOT', './');
require __DIR__ . '/common.php';

// Init userdata
$user->session_start(array('req_login' => true));

$topic_id = (int)request_var('t', 0);
$t_data = topic_info($topic_id);
$forum_id = $t_data['forum_id'];

set_die_append_msg($forum_id, $topic_id);

if ($t_data['seeders'] > 2) {
    bb_die(sprintf($lang['CALLSEED_HAVE_SEED'], $t_data['seeders']));
} elseif ($t_data['call_seed_time'] > (TIMENOW - 86400)) {
    $time_left = delta_time($t_data['call_seed_time'] + 86400, TIMENOW, 'days');
    bb_die(sprintf($lang['CALLSEED_MSG_SPAM'], $time_left));
}

$ban_user_id = [];

$sql = DB()->fetch_rowset("SELECT ban_userid FROM " . BB_BANLIST . " WHERE ban_userid != 0");

foreach ($sql as $row) {
    $ban_user_id[] = ',' . $row['ban_userid'];
}
$ban_user_id = implode('', $ban_user_id);

$user_list = DB()->fetch_rowset("
	SELECT DISTINCT dl.user_id, u.user_opt, tr.user_id as active_dl
	FROM " . BB_BT_DLSTATUS . " dl
	LEFT JOIN " . BB_USERS . " u  ON(u.user_id = dl.user_id)
	LEFT JOIN " . BB_BT_TRACKER . " tr ON(tr.user_id = dl.user_id)
	WHERE dl.topic_id = $topic_id
		AND dl.user_status IN (" . DL_STATUS_COMPLETE . ", " . DL_STATUS_DOWN . ")
		AND dl.user_id NOT IN ({$userdata['user_id']}, " . EXCLUDED_USERS . $ban_user_id . ")
		AND u.user_active = 1
	GROUP BY dl.user_id
");

$subject = sprintf($lang['CALLSEED_SUBJECT'], $t_data['topic_title']);
$message = sprintf($lang['CALLSEED_TEXT'], make_url(TOPIC_URL . $topic_id), $t_data['topic_title'], make_url(DL_URL . $t_data['attach_id']));

if ($user_list) {
    foreach ($user_list as $row) {
        if (!empty($row['active_dl'])) {
            continue;
        }

        if (bf($row['user_opt'], 'user_opt', 'user_callseed')) {
            send_pm($row['user_id'], $subject, $message, BOT_UID);
        }
    }
} else {
    send_pm($t_data['poster_id'], $subject, $message, BOT_UID);
}

DB()->query("UPDATE " . BB_BT_TORRENTS . " SET call_seed_time = " . TIMENOW . " WHERE topic_id = $topic_id");

meta_refresh(TOPIC_URL . $topic_id);
bb_die($lang['CALLSEED_MSG_OK']);

function topic_info($topic_id)
{
    global $lang;

    $sql = "
		SELECT
			tor.poster_id, tor.forum_id, tor.attach_id, tor.call_seed_time,
			t.topic_title, sn.seeders
		FROM      " . BB_BT_TORRENTS . " tor
		LEFT JOIN " . BB_TOPICS . " t  USING(topic_id)
		LEFT JOIN " . BB_BT_TRACKER_SNAP . " sn USING(topic_id)
		WHERE tor.topic_id = $topic_id
	";

    if (!$torrent = DB()->fetch_row($sql)) {
        bb_die($lang['TOPIC_POST_NOT_EXIST']);
    }

    return $torrent;
}