<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 foldmethod=marker: */
// +---------------------------------------------------------------------------
// | SWAN [ $_SWANBR_SLOGAN_$ ]
// +---------------------------------------------------------------------------
// | Copyright $_SWANBR_COPYRIGHT_$
// +---------------------------------------------------------------------------
// | Version  $_SWANBR_VERSION_$
// +---------------------------------------------------------------------------
// | Licensed ( $_SWANBR_LICENSED_URL_$ )
// +---------------------------------------------------------------------------
// | $_SWANBR_WEB_DOMAIN_$
// +---------------------------------------------------------------------------

namespace Kafka;

/**
+------------------------------------------------------------------------------
* Kafka protocol since Kafka v0.8
+------------------------------------------------------------------------------
*
* @package
* @version $_SWANBR_VERSION_$
* @copyright Copyleft
* @author $_SWANBR_AUTHOR_$
+------------------------------------------------------------------------------
*/

abstract class Config
{
    // {{{ consts
    // }}}
    // {{{ members

    protected static $options = array();

    private static $defaults = array(
        'clientId' => 'kafka-php',
        'brokerVersion' => '0.10.1.0',
        'metadataBrokerList' => '',
        'messageMaxBytes' => '1000000',
        'metadataRequestTimeoutMs' => '60000',
        'metadataRefreshIntervalMs' => '300000',
        'metadataMaxAgeMs' => -1,
    );

    // }}}
    // {{{ functions
    // {{{ public function __call()

    public function __call($name, $args)
    {
        if (strpos($name, 'get') === 0 || strpos($name, 'iet') === 0) {
            $option = strtolower(substr($name, 3, 1)) . substr($name, 4);
            if (isset(self::$options[$option])) {
                return self::$options[$option];
            }

            if (isset(self::$defaults[$option])) {
                return self::$defaults[$option];
            }
            if (isset(static::$defaults[$option])) {
                return static::$defaults[$option];
            }
            return false;
        }

        if (strpos($name, 'set') === 0) {
            if (count($args) != 1) {
                return false;
            }
            $option = strtolower(substr($name, 3, 1)) . substr($name, 4);
            static::$options[$option] = $args[0];
            // check todo
            return true;
        }
    }

    // }}}
    // {{{ public function setClientId()

    public function setClientId($val)
    {
        $client = trim($val);
        if ($client == '') {
            throw new \Kafka\Exception\Config('Set clientId value is invalid, must is not empty string.');
        }
        static::$options['clientId'] = $client;
    }

    // }}}
    // {{{ public function setBrokerVersion()

    public function setBrokerVersion($version)
    {
        $version = trim($version);
        if ($version == '' || version_compare($version, '0.8.0') < 0) {
            throw new \Kafka\Exception\Config('Set broker version value is invalid, must is not empty string and gt 0.8.0.');
        }
        static::$options['brokerVersion'] = $version;
    }

    // }}}
    // {{{ public function setMetadataBrokerList()

    public function setMetadataBrokerList($list)
    {
        if (trim($list) == '') {
            throw new \Kafka\Exception\Config('Set broker list value is invalid, must is not empty string');
        }
        $tmp = explode(',', trim($list));
        $lists = array();
        foreach ($tmp as $key => $val) {
            if (trim($val) != '') {
                $lists[] = $val;
            }
        }
        if (empty($lists)) {
            throw new \Kafka\Exception\Config('Set broker list value is invalid, must is not empty string');
        }
        foreach ($lists as $val) {
            $hostinfo = explode(':', $val);
            foreach ($hostinfo as $key => $val) {
                if (trim($val) == '') {
                    unset($hostinfo[$key]);
                }
            }
            if (count($hostinfo) != 2) {
                throw new \Kafka\Exception\Config('Set broker list value is invalid, must is not empty string');
            }
        }

        static::$options['metadataBrokerList'] = $list;
    }

    // }}}
    // {{{ public function clear()

    public function clear()
    {
        static::$options = [];
    }

    // }}}
    // {{{ public function setMessageMaxBytes()

    public function setMessageMaxBytes($messageMaxBytes)
    {
        if (!is_numeric($messageMaxBytes) || $messageMaxBytes < 1000 || $messageMaxBytes > 1000000000) {
            throw new \Kafka\Exception\Config('Set message max bytes value is invalid, must set it 1000 .. 1000000000');
        }
        static::$options['messageMaxBytes'] = $messageMaxBytes;
    }

    // }}}
    // {{{ public function setMetadataRequestTimeoutMs()

    public function setMetadataRequestTimeoutMs($metadataRequestTimeoutMs)
    {
        if (!is_numeric($metadataRequestTimeoutMs) || $metadataRequestTimeoutMs < 10
            || $metadataRequestTimeoutMs > 900000) {
            throw new \Kafka\Exception\Config('Set metadata request timeout value is invalid, must set it 10 .. 900000');
        }
        static::$options['metadataRequestTimeoutMs'] = $metadataRequestTimeoutMs;
    }

    // }}}
    // {{{ public function setMetadataRefreshIntervalMs()

    public function setMetadataRefreshIntervalMs($metadataRefreshIntervalMs)
    {
        if (!is_numeric($metadataRefreshIntervalMs) || $metadataRefreshIntervalMs < 10
            || $metadataRefreshIntervalMs > 3600000) {
            throw new \Kafka\Exception\Config('Set metadata refresh interval value is invalid, must set it 10 .. 3600000');
        }
        static::$options['metadataRefreshIntervalMs'] = $metadataRefreshIntervalMs;
    }

    // }}}
    // {{{ public function setMetadataMaxAgeMs()

    public function setMetadataMaxAgeMs($metadataMaxAgeMs)
    {
        if (!is_numeric($metadataMaxAgeMs) || $metadataMaxAgeMs < 1
            || $metadataMaxAgeMs > 86400000) {
            throw new \Kafka\Exception\Config('Set metadata max age value is invalid, must set it 1 .. 86400000');
        }
        static::$options['metadataMaxAgeMs'] = $metadataMaxAgeMs;
    }

    // }}}
    // }}}
}