<?php

    require_once('libraries/TeamSpeak3/TeamSpeak3.php');

    $ts3 = TeamSpeak3::factory('serverquery://dave:<passwort>@10.10.12.100:10011?server_port=9987');

    $mainChannel = 5;
    $reserve_channels = 2;

    $empty = 0;

    foreach ($ts3->channelList(['pid' => $mainChannel]) as $channel) {
        if ($channel->total_clients === 0) {
            $empty++;
            $empty_channels[$channel->channel_order] = $channel->cid;
        }
        $channels[] = $channel;
    }


    if ($empty > $reserve_channels) {
        $i = 0;
        foreach ($empty_channels as $order => $cid) {
            if ($i > 1) {
                $ts3->channelDelete($cid, true);
            } else {
                $i++;
            }
        }
        $ts3->channelListReset();
        $i = 1;
        foreach ($ts3->channelList(['pid' => $mainChannel]) as $channel) {
            try {
                $channel->modify([
                    'channel_name' => 'Talk #'.$i
                ]);
            } catch (Exception $e) {
                $i++;
                echo $e->getMessage().' - '.$i.'<br/>';
            }
        }
    } else if ($empty < $reserve_channels) {
        $i = 1;
        while (true) {
            try {
                if ($i > 10) break;
                $cid = $ts3->channelCreate([
                    'channel_name' => 'Talk #'.$i,
                    'cpid' => $mainChannel
                ]);
                $empty++;
                if ($empty >= $reserve_channels) break;
            } catch (Exception $e) {
                $i++;
                echo $e->getMessage().' - '.$i.'<br/>';
            }
        }
    }