<?php

/**
 * 网易云信server API 简单实例
 * Class ServerAPI
 * @author  liuxuanlin
 * @created date    2020-09-21
 *
 *
 ***/

class ServerAPI
{
    public $AppKey; //开发者平台分配的AppKey
    public $AppSecret; //开发者平台分配的AppSecret,可刷新
    public $Nonce; //随机数（最大长度128个字符）
    public $CurTime; //当前UTC时间戳，从1970年1月1日0点0 分0 秒开始到现在的秒数(String)
    public $CheckSum; //SHA1(AppSecret + Nonce + CurTime),三个参数拼接的字符串，进行SHA1哈希计算，转化成16进制字符(String，小写)
    const HEX_DIGITS = "0123456789abcdef";

    /**
     * 参数初始化
     * @param $AppKey
     * @param $AppSecret
     * @param $RequestType [选择php请求方式，fsockopen或curl,若为curl方式，请检查php配置是否开启]
     */
    public function __construct($AppKey, $AppSecret, $RequestType = 'curl')
    {
        $this->AppKey = $AppKey;
        $this->AppSecret = $AppSecret;
        $this->RequestType = $RequestType;
    }

    /**
     * API checksum校验生成
     * @param  void
     * @return $CheckSum(对象私有属性)
     */
    public function checkSumBuilder()
    {
        //此部分生成随机字符串
        $hex_digits = self::HEX_DIGITS;
        $this->Nonce;
        for ($i = 0; $i < 128; $i++) { //随机字符串最大128个字符，也可以小于该数
            $this->Nonce .= $hex_digits[rand(0, 15)];
        }
        $this->CurTime = (string) (time()); //当前时间戳，以秒为单位

        $join_string = $this->AppSecret . $this->Nonce . $this->CurTime;
        $this->CheckSum = sha1($join_string);
        //print_r($this->CheckSum);
    }

    /**
     * 将json字符串转化成php数组
     * @param  $json_str
     * @return $json_arr
     */
    public function json_to_array($json_str)
    {

        if (is_array($json_str) || is_object($json_str)) {
            $json_str = $json_str;
        } else if (is_null(json_decode($json_str))) {
            $json_str = $json_str;
        } else {
            $json_str = strval($json_str);
            $json_str = json_decode($json_str, true);
        }
        $json_arr = array();
        foreach ($json_str as $k => $w) {
            if (is_object($w)) {
                $json_arr[$k] = $this->json_to_array($w); //判断类型是不是object
            } else if (is_array($w)) {
                $json_arr[$k] = $this->json_to_array($w);
            } else {
                $json_arr[$k] = $w;
            }
        }
        return $json_arr;
    }

    /**
     * 使用CURL方式发送post请求
     * @param  $url     [请求地址]
     * @param  $data    [array格式数据]
     * @return $请求返回结果(array)
     */
    public function postDataCurl($url, $data)
    {
        $this->checkSumBuilder(); //发送请求前需先生成checkSum

        $timeout = 5000;
        $http_header = array(
            'AppKey:' . $this->AppKey,
            'Nonce:' . $this->Nonce,
            'CurTime:' . $this->CurTime,
            'CheckSum:' . $this->CheckSum,
            'Content-Type:application/x-www-form-urlencoded;charset=utf-8',
        );
        //print_r($http_header);

        // $postdata = '';
        $postdataArray = array();
        foreach ($data as $key => $value) {
            array_push($postdataArray, $key . '=' . urlencode($value));
        }
        $postdata = join('&', $postdataArray);

        // var_dump($postdata);

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $postdata);
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $http_header);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //处理http证书问题
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

        $result = curl_exec($ch);
        if (false === $result) {
            $result = curl_errno($ch);
        }
        curl_close($ch);
        return $this->json_to_array($result);
    }

    /**
     * 使用FSOCKOPEN方式发送post请求
     * @param  $url     [请求地址]
     * @param  $data    [array格式数据]
     * @return $请求返回结果(array)
     */
    public function postDataFsockopen($url, $data)
    {
        $this->checkSumBuilder(); //发送请求前需先生成checkSum

        $postdata = '';
        foreach ($data as $key => $value) {
            $postdata .= ($key . '=' . urlencode($value) . '&');
        }
        // building POST-request:
        $URL_Info = parse_url($url);
        if (!isset($URL_Info["port"])) {
            $URL_Info["port"] = 80;
        }
        $request = '';
        $request .= "POST " . $URL_Info["path"] . " HTTP/1.1\r\n";
        $request .= "Host:" . $URL_Info["host"] . "\r\n";
        $request .= "Content-type: application/x-www-form-urlencoded;charset=utf-8\r\n";
        $request .= "Content-length: " . strlen($postdata) . "\r\n";
        $request .= "Connection: close\r\n";
        $request .= "AppKey: " . $this->AppKey . "\r\n";
        $request .= "Nonce: " . $this->Nonce . "\r\n";
        $request .= "CurTime: " . $this->CurTime . "\r\n";
        $request .= "CheckSum: " . $this->CheckSum . "\r\n";
        $request .= "\r\n";
        $request .= $postdata . "\r\n";

        //print_r($request);
        $fp = fsockopen($URL_Info["host"], $URL_Info["port"]);
        fputs($fp, $request);
        $result = '';
        while (!feof($fp)) {
            $result .= fgets($fp, 128);
        }
        fclose($fp);

        $str_s = strpos($result, '{');
        $str_e = strrpos($result, '}');
        $str = substr($result, $str_s, $str_e - $str_s + 1);
        //print_r($result);
        return $this->json_to_array($str);
    }

    /**
     * 创建云信id
     * @param  $accid    网易云通信ID
     * @param  $name     云通信ID昵称
     */
    public function createAccid($accid, $name)
    {
        $url = 'https://api.netease.im/nimserver/user/create.action';
        $data = array(
            'accid' => $accid,
            'name' => $name,
        );
        if ($this->RequestType == 'curl') {
            $result = $this->postDataCurl($url, $data);
        } else {
            $result = $this->postDataFsockopen($url, $data);
        }
        return $result;
    }

    /**
     * 发送普通消息
     * @param  $from    发送者accid
     * @param  $ope     0：点对点个人消息，1：群消息（高级群），其他返回414
     * @param  $to      ope==0是表示accid即用户id，ope==1表示tid即群id
     * @return $type    消息类型
     * @return $body    最大长度5000字符，JSON格式
     * @return $option  发消息时特殊指定的行为选项,JSON格式
     * @return $pushcontent  推送文案,最长500个字符
     * @return $payload  必须是JSON,不能超过2k字符
     * @return $ext  开发者扩展字段，长度限制1024字符
     */
    public function sendMessage($from, $ope, $to, $type, $body, $option, $pushcontent, $payload, $ext)
    {
        $url = 'https://api.netease.im/nimserver/msg/sendMsg.action';
        $data = array(
            'from' => $from,
            'ope' => $ope,
            'to' => $to,
            'type' => $type,
            'body' => json_encode($body),
            'option' => json_encode($option),
            'pushcontent' => $pushcontent,
            'payload' => json_decode($payload),
            'ext' => json_decode($ext),
        );
        if ($this->RequestType == 'curl') {
            $result = $this->postDataCurl($url, $data);
        } else {
            $result = $this->postDataFsockopen($url, $data);
        }
        return $result;
    }

    /**
     * 批量发送
     * @param  $fromAccid    发送者accid
     * @param  $toAccids     ["aaa","bbb"]（JSONArray对应的accid，如果解析出错，会报414错误），限500人
     * @return $type    消息类型
     * @return $body    最大长度5000字符，JSON格式
     * @return $option  发消息时特殊指定的行为选项,JSON格式
     * @return $pushcontent  推送文案,最长500个字符
     * @return $payload  必须是JSON,不能超过2k字符
     * @return $ext  开发者扩展字段，长度限制1024字符
     */
    public function sendBatchMessage($fromAccid, $toAccids, $type, $body, $option, $pushcontent, $payload, $ext)
    {
        $url = 'https://api.netease.im/nimserver/msg/sendBatchMsg.action';
        $data = array(
            'fromAccid' => $fromAccid,
            'toAccids' => json_encode($toAccids),
            'type' => $type,
            'body' => json_encode($body),
            'option' => json_encode($option),
            'pushcontent' => $pushcontent,
            'payload' => json_decode($payload),
            'ext' => json_decode($ext),
        );
        if ($this->RequestType == 'curl') {
            $result = $this->postDataCurl($url, $data);
        } else {
            $result = $this->postDataFsockopen($url, $data);
        }
        return $result;
    }

    /**
     * 发送短信验证码
     * @param  $templateid    [模板编号(由客服配置之后告知开发者)]
     * @param  $mobile       [目标手机号]
     * @param  $deviceId     [目标设备号，可选参数]
     * @return $codeLen      [验证码长度,范围4～10，默认为4]
     */
    public function sendSmsCode($templateid, $mobile, $deviceId = '', $codeLen)
    {
        $url = 'https://api.netease.im/sms/sendcode.action';
        $data = array(
            'templateid' => $templateid,
            'mobile' => $mobile,
            'deviceId' => $deviceId,
            'codeLen' => $codeLen,
        );
        if ($this->RequestType == 'curl') {
            $result = $this->postDataCurl($url, $data);
        } else {
            $result = $this->postDataFsockopen($url, $data);
        }
        return $result;
    }

    /**
     * 发送模板短信
     * @param  $templateid       [模板编号(由客服配置之后告知开发者)]
     * @param  $mobiles          [验证码]
     * @param  $params          [短信参数列表，用于依次填充模板，JSONArray格式，如["xxx","yyy"];对于不包含变量的模板，不填此参数表示模板即短信全文内容]
     * @return $result      [返回array数组对象]
     */
    public function sendSMSTemplate($templateid, $mobiles = array(), $params = '')
    {
        $url = 'https://api.netease.im/sms/sendtemplate.action';
        $data = array(
            'templateid' => $templateid,
            'mobiles' => json_encode($mobiles),
            'params' => json_encode($params),
        );
        if ($this->RequestType == 'curl') {
            $result = $this->postDataCurl($url, $data);
        } else {
            $result = $this->postDataFsockopen($url, $data);
        }
        return $result;
    }

    /**
     * 刷新token
     */
    public function refreshToken($accid)
    {
        $url = 'https://api.netease.im/nimserver/user/refreshToken.action';
        $data = array(
            'accid' => $accid,
        );
        if ($this->RequestType == 'curl') {
            $result = $this->postDataCurl($url, $data);
        } else {
            $result = $this->postDataFsockopen($url, $data);
        }
        return $result;
    }
    /**
     * 创建聊天室
     */
    public function chatroomCreate($accid, $name)
    {
        $url = 'https://api.netease.im/nimserver/chatroom/create.action';
        $data = array(
            'creator' => $accid,
            'name' => $name,
        );
        if ($this->RequestType == 'curl') {
            $result = $this->postDataCurl($url, $data);
        } else {
            $result = $this->postDataFsockopen($url, $data);
        }
        return $result;
    }
    //查询聊天室信息
    public function chatroomget($roomid)
    {
        $url = 'https://api.netease.im/nimserver/chatroom/get.action';

    }
    /**
     * 根据accid获取聊天室roomid
     */
    public function queryUserRoomIds($accid)
    {
        $url = 'https://api.netease.im/nimserver/chatroom/queryUserRoomIds.action';
        $data = array(
            'creator' => $accid,
        );
        if ($this->RequestType == 'curl') {
            $result = $this->postDataCurl($url, $data);
        } else {
            $result = $this->postDataFsockopen($url, $data);
        }
        return $result;
    }
    /**
     * 获取聊天室地址
     */
    public function chatroomRequestAddr($roomid, $accid)
    {
        $url = 'https://api.netease.im/nimserver/chatroom/requestAddr.action';
        $data = [
            'roomid' => $roomid,
            'accid' => $accid,
        ];
        if ($this->RequestType == 'curl') {
            $result = $this->postDataCurl($url, $data);
        } else {
            $result = $this->postDataFsockopen($url, $data);
        }
        return $result;
    }
    /**
     * 为项目人员创建token
     */
    public function gettokenforapp($userinfo)
    {
        $id = $userinfo['id']; //accid
        $name = $userinfo['name'];
        $result = $this->createAccid($id, $name);
        $code = $result['code'];
        $token = '';
        switch ($code) {
            case '200':
                //新建用户成功
                $data = $result['info'];
                $token = $data['token'];
                break;
            case '414':
                //用户已存在 重置token
                $result = $this->refreshToken($id);
                $code = $result['code'];
                if (200 != $code) {
                    //报错
                }
                $data = $result['info'];
                $token = $data['token'];
                break;
            default:
                //报错
                $desc = $result['desc'];
                exit("网络异常-" . $desc);
                break;
        }
        return $token;
    }

    /**
     * 为项目获取聊天室信息
     */
    public function getroomidforapp($userinfo)
    {
        $id = $userinfo['id']; //accid
        $name = $userinfo['name'];
        $type = $userinfo['type'];
        $roomid = $_SESSION['roomid'];
        try {
            if (1 == $type) {
                //可创建聊天室用户
                $result = $this->queryUserRoomIds($id);
                if (200 != $result['code']) {
                    //排除无 聊天室状态
                    $has = false;
                    if (!$has) {
                        //创建聊天室
                        $result = $this->chatroomCreate($id);
                        if (200 != $result['code']) {
                            //聊天室创建失败
                            throw new Exception("Error Processing Request", 1);
                        }
                    }
                    throw new Exception("Error Processing Request", 1);
                }
                $rootlist = $result['desc']['roomids'];
                $roomid = $rootlist[0];
            }
            return false;
        } catch (\Exception $th) {

        }
    }
}