<?php

namespace call;

class Luban
{
    protected $appid;
    protected $secretKey;

    public function __construct($appid, $secretKey)
    {
        $this->appid = $appid;
        $this->secretKey = $secretKey;
    }

    /**
     * 主叫与被叫绑定
     *
     * @param String $caller 主叫
     * @param String $callee 被叫
     * @param String $telX   中间号
     * @return Array
     */
    public function bind($caller, $callee, $telX)
    {
        $url = 'http://open.hnbaoze.cn/10086/call/';
        $param = [
            'types' => 'callout',
            'appid' => $this->appid,
            'caller' => $caller,
            'callees' => $callee,
            'bindnum' => $telX
        ];
        $param['sign']  = $this->getSigin($param);
        $rs = $this->curl($url, $param);
        return json_decode($rs, true);
    }

    /**
     * 获取签名
     *
     * @param Array $params
     * 
     * 
     * 签名算法：
     * 1，将appid的值先sha256加密，再base64加密
     * 2，与appkey值拼接得到sign完整签名
     * 
     * 
     * @return String
     */
    public function getSigin($params)
    {
        return base64_encode(hash('sha256', $this->appid)).$this->secretKey;
    }

    /**
     * curl请求
     *
     * @param String $url
     * @param Array $param
     * @return String
     */
    public function curl($url, $param)
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_HTTPHEADER, ['Content-type: application/json; encoding=utf-8']);
        if (!empty($param)) {
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($param));
        }

        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_HEADER, false);

        $rs = curl_exec($curl);
        curl_close($curl);
        return $rs;
    }
}