<?php
namespace app\components\OpenAuth\core;
use \Exception;
use app\common\helpers\Session;
use Yii;
class Wxclient {

    private $APIMap;

    function __construct() {
        $this->oauth = new WX();
        /*
         * 初始化APIMap
         * 加#表示非必须，无则不传入url(url中不会出现该参数)， "key" => "val" 表示key如果没有定义则使用默认值val
         * 规则 array( baseUrl, argListArr, method)
         */
        $this->APIMap = array(

            "get_user_info" => array(
                "https://api.weixin.qq.com/sns/userinfo",
                array("format" => "json"),
                "GET"
            )

        );
    }

    //调用相应api
    private function _applyAPI($arr, $argsList, $baseUrl, $method) {
        $pre = "#";
        $keysArr = array(
            "access_token" => Session::get('wx_token.access_token'),
            "openid" => Session::get('wx_token.openid')
        );

        if ($method == "POST") {
            $this->oauth->ssl_verifypeer = 0;
            $response = $this->oauth->https_request($baseUrl, null, $keysArr);
        } else if ($method == "GET") {
            $baseUrl.="?".http_build_query($keysArr);
            $response = $this->oauth->https_request($baseUrl);
        }
        return $response;
    }

    public function __call($name, $arg) {
        //如果APIMap不存在相应的api
        if (empty($this->APIMap[$name])) {
            throw new Exception("不存在的API: <span style='color:red;'>$name</span>");
        }
        //从APIMap获取api相应参数
        $baseUrl = $this->APIMap[$name][0];
        $argsList = $this->APIMap[$name][1];
        $method = isset($this->APIMap[$name][2]) ? $this->APIMap[$name][2] : "GET";
        if (empty($arg)) {
            $arg[0] = null;
        }
        //对于get_tenpay_addr，特殊处理，php json_decode对\xA312此类字符支持不好
        $responseArr = $this->obj2array($this->_applyAPI($arg[0], $argsList, $baseUrl, $method));
        //检查返回ret判断api是否成功调用
        if ($responseArr['ret'] == 0) {
            return $responseArr;
        } else {
            throw new Exception($responseArr['msg']);
        }
    }
    /**
     * 多级对象转数组
     * @param obj $object 待转换的对象
     * @return array
     */
    private  function obj2array($object = NULL) {
        $array = (array) $object;
        foreach ($array as $key => $val) {
            //判断是否为对象或数组，因为数组中可能还会存在对象
            if (is_object($val) || is_array($val)) {
                $val = obj2array($val);
            }
            $array[$key] = $val;
        }
        return $array;
    }

    //php 对象到数组转换
    private function objToArr($obj) {
        if (!is_object($obj) && !is_array($obj)) {
            return $obj;
        }
        $arr = array();
        foreach ($obj as $k => $v) {
            $arr[$k] = $this->objToArr($v);
        }
        return $arr;
    }

    public function get_access_token() {
        return Session::get('wx_token.access_token');
    }

    //简单实现json到php数组转换功能
    private function simple_json_parser($json) {
        $json = str_replace("{", "", str_replace("}", "", $json));
        $jsonValue = explode(",", $json);
        $arr = array();
        foreach ($jsonValue as $v) {
            $jValue = explode(":", $v);
            $arr[str_replace('"', "", $jValue[0])] = (str_replace('"', "", $jValue[1]));
        }
        return $arr;
    }

}