<?php

namespace server\components;

use server\components\ApiException;
use Ramsey\Uuid\Uuid;
use Ramsey\Uuid\Exception\UnsatisfiedDependencyException;

class Utility{

    /**
     * 调试输出
     * @param $msg
     */
    public static function dump($msg){
        if(is_array($msg)){
            $msg = json_encode($msg);
        }
        echo $msg."\n";
    }

    //获取毫秒级时间戳
    public static function getMsectime(){
        return (float)sprintf('%.0f', microtime(true) * 1000);
    }

    /**
     * 获取GET请求
     * @param $url
     * @param array $params
     * @param int $timeout
     */
    public static function curl_get($url, array $params = array(), $timeout = 5)
    {
        if($params){
            $attr = strpos($url,'?')?'&':'?';
            foreach ($params as $k=>$v){
                $attr .= $k.'='.$v;
            }
            $url .= $attr;
        }
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
        $file_contents = curl_exec($ch);
        curl_close($ch);
        return $file_contents;
    }

    /**
     * 获取POST请求
     * @param $url
     * @param array $params
     * @param $timeout
     * @return mixed
     */
    public static function curl_post($url, $data, $timeout = 5) {

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//要求结果为字符串且输出到屏幕上
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
                "Content-Type: application/json; charset=utf-8",
                "Content-Length: " . strlen($data))
        );
        $res = curl_exec($ch);
        curl_close($ch);
        return $res;

    }

    /**
     * 处理请求.
     */
    public static function dealRequest($requestParam){
        try { 
            if(empty($requestParam['path'])){
                throw new ApiException(404,'path路径不能为空.');
            }
            $parms = explode('/',$requestParam['path']);
            list($module, $method) = $parms;
            $urlManager = [
                'module'  => $module,
                'method'  => $method
            ];

            $className = "\\server\\modules\\".$urlManager['module']."\\service\\Service";
            $method = 'action' . ucwords($urlManager['method']);

            if(!class_exists($className) || !method_exists($className,$method)){
                throw new ApiException(404,'请求路径错误');
            }
            return (new $className($requestParam))->$method();
        } catch (ApiException $e) {
            throw new ApiException($e->getCode(),$e->getMessage());
        }
    }

    /**
     * 远程游戏api调用
     */
    public static function callRemoteApi($api,$token,$msg = []){
        global $configFile;
        $data = ['Param'=>['Token'=>$token]];
        if(!empty($msg)){
            $itemData = [
                'code' => 200,
                'msg' => 'ok',
                'message_type' => $msg['msg_type'],
                'data' => $msg['data'],
            ];
            $data = [
                'Param'=> [
                    "SnId" => $token,
                    "Plateform" => 1,
                    "Data" => json_encode($itemData)
                ]
            ];
        }

        $data = json_encode($data);
        $AppId = $configFile['app_id'];
        $msectime = self::getMsectime();
        $sign = md5($AppId.';'.$api.';'.$data.';'.$msectime);

        $url = $configFile['game_host'].$api.'?ts='.$msectime.'&sign='.$sign;
        var_dump($url);
        $res = self::curl_post($url,$data);
        var_dump($res);
        $res = json_decode($res,true);

        return $res;
    }

    public static function makeSnowFlake($dataCenterID=0,$workerID=0){
        // 41bit timestamp + 5bit dataCenter + 5bit worker + 12bit
        $lastTimestamp = 0;
        $lastSequence  = 0;
        $sequenceMask  = 4095;
        $twepoch       = 1508945092000;
        $timestamp = self::getMsectime();
        if ($lastTimestamp == $timestamp) {
            $lastSequence = ($lastSequence + 1) & $sequenceMask;
            if ($lastSequence == 0) $timestamp = self::tilNextMillis($lastTimestamp);
        } else {
            $lastSequence = 0;
        }
        $lastTimestamp = $timestamp;
        $snowFlakeId = (($timestamp - $twepoch) << 22) | ($dataCenterID << 17) | ($workerID << 12) | $lastSequence;
        return $snowFlakeId;
    }

    //等待下一毫秒的时间戳
    public static function tilNextMillis($lastTimestamp){
        $timestamp = self::getMsectime();
        while ($timestamp <= $lastTimestamp) {
            $timestamp = self::getMsectime();
        }
        return $timestamp;
    }

    /**
     * UUID生成
     */
    public static function makeUuid(){
        $uuid4 = Uuid::uuid4();
        return $uuid4->toString();
    }


}