<?php

/**
 * @file
 * TeamSpeak 3 PHP Framework
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 * @package   TeamSpeak3
 * @author    Sven 'ScP' Paulsen
 * @copyright Copyright (c) 2010 by Planet TeamSpeak. All rights reserved.
 */

/**
 * @deprecated
 * @class TeamSpeak3_Adapter_Update
 * @brief Provides methods to query the latest TeamSpeak 3 build numbers from the master server.
 */
class TeamSpeak3_Adapter_Update extends TeamSpeak3_Adapter_Abstract
{
    /**
     * The IPv4 address or FQDN of the TeamSpeak Systems update server.
     *
     * @var string
     */
    protected $default_host = 'update.teamspeak.com';

    /**
     * The UDP port number of the TeamSpeak Systems update server.
     *
     * @var int
     */
    protected $default_port = 17384;

    /**
     * Stores an array containing the latest build numbers (integer timestamps).
     *
     * @var array
     */
    protected $build_datetimes = null;

    /**
     * Stores an array containing the latest version strings.
     *
     * @var array
     */
    protected $version_strings = null;

    /**
     * Connects the TeamSpeak3_Transport_Abstract object and performs initial actions on the remote
     * server.
     *
     * @throws TeamSpeak3_Adapter_Update_Exception
     * @return void
     */
    public function syn()
    {
        if (!isset($this->options['host']) || empty($this->options['host'])) {
            $this->options['host'] = $this->default_host;
        }
        if (!isset($this->options['port']) || empty($this->options['port'])) {
            $this->options['port'] = $this->default_port;
        }

        $this->initTransport($this->options, 'TeamSpeak3_Transport_UDP');
        $this->transport->setAdapter($this);

        TeamSpeak3_Helper_Profiler::init(spl_object_hash($this));

        $this->getTransport()->send(TeamSpeak3_Helper_String::fromHex(33));

        if (!preg_match_all('/,?(\d+)#([0-9a-zA-Z\._-]+),?/', $this->getTransport()->read(96), $matches) || !isset($matches[1]) || !isset($matches[2])) {
            throw new TeamSpeak3_Adapter_Update_Exception('invalid reply from the server');
        }

        $this->build_datetimes = $matches[1];
        $this->version_strings = $matches[2];

        TeamSpeak3_Helper_Signal::getInstance()->emit('updateConnected', $this);
    }

    /**
     * The TeamSpeak3_Adapter_Update destructor.
     *
     * @return void
     */
    public function __destruct()
    {
        if ($this->getTransport() instanceof TeamSpeak3_Transport_Abstract && $this->getTransport()->isConnected()) {
            $this->getTransport()->disconnect();
        }
    }

    /**
     * Returns the current build number for a specified update channel. Note that since version
     * 3.0.0, the build number represents an integer timestamp. $channel must be set to one of
     * the following values:.
     * - stable
     * - beta
     * - alpha
     * - server.
     *
     * @param  string $channel
     * @throws TeamSpeak3_Adapter_Update_Exception
     * @return int
     */
    public function getRev($channel = 'stable')
    {
        switch ($channel) {
            case 'stable':
                return $this->build_datetimes[0] ?? null;

            case 'beta':
                return $this->build_datetimes[1] ?? null;

            case 'alpha':
                return $this->build_datetimes[2] ?? null;

            case 'server':
                return $this->build_datetimes[3] ?? null;

            default:
                throw new TeamSpeak3_Adapter_Update_Exception('invalid update channel identifier (' . $channel . ')');
        }
    }

    /**
     * Returns the current version string for a specified update channel. $channel must be set to
     * one of the following values:.
     * - stable
     * - beta
     * - alpha
     * - server.
     *
     * @param  string $channel
     * @throws TeamSpeak3_Adapter_Update_Exception
     * @return int
     */
    public function getVersion($channel = 'stable')
    {
        switch ($channel) {
            case 'stable':
                return $this->version_strings[0] ?? null;

            case 'beta':
                return $this->version_strings[1] ?? null;

            case 'alpha':
                return $this->version_strings[2] ?? null;

            case 'server':
                return $this->version_strings[3] ?? null;

            default:
                throw new TeamSpeak3_Adapter_Update_Exception('invalid update channel identifier (' . $channel . ')');
        }
    }

    /**
     * Alias for getRev() using the 'stable' update channel.
     *
     * @param  string $channel
     * @return int
     */
    public function getClientRev()
    {
        return $this->getRev('stable');
    }

    /**
     * Alias for getRev() using the 'server' update channel.
     *
     * @param  string $channel
     * @return int
     */
    public function getServerRev()
    {
        return $this->getRev('server');
    }

    /**
     * Alias for getVersion() using the 'stable' update channel.
     *
     * @param  string $channel
     * @return int
     */
    public function getClientVersion()
    {
        return $this->getVersion('stable');
    }

    /**
     * Alias for getVersion() using the 'server' update channel.
     *
     * @param  string $channel
     * @return int
     */
    public function getServerVersion()
    {
        return $this->getVersion('server');
    }
}
