<?php

define('APP_ID', 'bridge-wsd');
define('BASE_ROOT_PATH', str_replace('\\', '/', dirname(__FILE__)));

require_once(BASE_ROOT_PATH . '/global.php');
require_once(BASE_ROOT_PATH . '/fooder.php');
require_once(BASE_ROOT_PATH . '/helper/event_looper.php');
require_once(BASE_CORE_PATH . '/framework/function/http.php');


global $config;
$port = $config['wsd_bradge_port'];


class WSDBridge
{
    private $mListenPort;
    const KEY = 'ac59f54faf1ffcc1';

    public function __construct($port)
    {
        $this->mListenPort = $port;
    }

    private function handle_error($level, $message, $file, $line)
    {
        if($level == E_NOTICE) return;
        $trace = "handle_error: level={$level},msg={$message} file={$file},line={$line}\n";
        $backtrace = debug_backtrace();
        foreach ($backtrace as $item) {
            $trace .= "{$item['file']}\t{$item['line']}\t{$item['function']}\n";
        }

        Log::record($trace,Log::ERR);
    }

    public function looper()
    {
        set_error_handler([$this, 'handle_error']);

        $fd = event\util::listen_block("0.0.0.0", $this->mListenPort);
        if ($fd === false) {
            Log::record("Cannot Listen on port = {$this->mListenPort}", Log::DEBUG);
            return false;
        }

        while (true)
        {
            Log::record("Waitting another connect....");
            if (($client = socket_accept($fd)) !== false)
            {
                try
                {
                    Log::record("Client {$client} has connected", Log::DEBUG);
                    socket_set_option($client, SOL_SOCKET, SO_RCVTIMEO, ['sec' => 8, 'usec' => 0]);

                    $body = $this->read_order($client);
                    if (!empty($body)) {
                        Log::record("req:{$body}", Log::DEBUG);
                        $resp = $this->relay_request($body);
                        Log::record("resp={$resp}",Log::ERR);

                        $resp = mb_convert_encoding($resp, 'GBK', 'UTF-8');
                        socket_write($client, $resp);
                        Log::record("resp:{$resp}", Log::DEBUG);
                    } else {
                        Log::record("不合法的包", Log::DEBUG);
                    }
                }
                catch (Exception $ex) {
                    Log::record(__FUNCTION__ . " " . $ex->getMessage(),Log::ERR);
                }

                socket_close($client);
            }
        }

        socket_close($fd);
    }

    private function relay_request($body)
    {
        $url = BASE_SITE_URL . "/mobile/bridge_shr.php";
        $headers = ['Content-Type: application/json'];

        $resp = http_post_data($url, $body, $headers);
        if ($resp === false) {
            Log::record("Net error.", Log::ERR);
            return $this->err_body($body);
        } else {
            return $resp;
        }
    }

    private function err_body($body)
    {
        $params = json_decode($body,true);

        //交易结果 0:未处理 1:充值成功 2:充值结果不确定 3:充值失败
        $retCode = 3;
        $retDetail = "服务维护中.....";

        $result = [
            'action' => 'CZ',
            'chargeId' => $params['chargeId'],
            'retCode' => $retCode,
            'retDetail' => $retDetail,
            'retRsn' => $params['retRsn']];

        $body = "{$params['chargeId']}{$retCode}{$params['retRsn']}" . WSDBridge::KEY;
        $sign = md5($body);
        $result['sign'] = $sign;

        return json_encode($result);
    }

    private function read_order($client)
    {
        $content = '';
        $buf = socket_read($client, 1024);
        if ($buf === false) {
            $error = socket_strerror(socket_last_error($client));
            Log::record("read_order err:{$error}", Log::ERR);
            return false;
        } else {
            $content .= $buf;
        }

        $content = mb_convert_encoding($content, 'UTF-8', 'GBK');
        if ($this->isbody($content)) {
            return $content;
        } else {
            Log::record("err body = {$content}", Log::DEBUG);
            return false;
        }
    }

    private function isbody($content)
    {
        $ret = json_decode($content, true);
        return !empty($ret);
    }
}

$brider = new WSDBridge($port);
$brider->looper();