<?php

namespace app\api\controller\v1;

use think\Request;

use app\api\exception\weappay\lib\WxPayConfig;

use app\common\model\StoreMessages as Smsg; //消息

use app\common\model\StoreSpecial as Ss;  // 特价商品

use app\common\model\StoreGroup as SG;   //拼团

use app\common\model\StoreMgroup as SM; //用户团购

use app\common\model\StoreMspecial as SMs; //用户限量

use app\common\model\StoreOrder as StoreOd; //订单

use app\common\model\StoreCart as shopCart; //购物车

use app\common\model\StoreProducts as StorePro; //普通商品

use think\facade\Log;

use app\api\controller\v1\PayConfig;

//微信支付管理

class Wxpay extends PayConfig

{

    public function wxappay() //微信app支付

    {

        $oid    = input('oid');    //商家id

        $orsid  = input('orsid'); //订单号

        $price  = input('price');

        $appid  = PayConfig::get_wx_config_info('wxappid', $oid);

        $mchid  = PayConfig::get_wx_config_info('wxmch_id', $oid);

        //$price  = $price * 100;

        $price  = 1;

        $nonce_str = self::getNonceStr();   //自己做个随机字符串

        $data = [

            'appid'            => $appid,    //appid T

            'mch_id'           => $mchid,    //商户号T

            'nonce_str'        => $nonce_str,

            'body'             => '可待商城系统-商品购买',   //商品信息

            'out_trade_no'     => $orsid,     //订单号

            'total_fee'        => $price,   //价格，微信支付价格会处以一百

            'spbill_create_ip' => self::getip(),

            'notify_url'       => config('api_url') . '/wxnotify',

            'trade_type'       => 'APP',    //小程序，app，之类的选项不一样

        ];

        $data['sign'] = self::makeSign($data, $oid);    //制作签名

        $xmldata = self::array2xml($data);    //传入参数转换成xml格式

        $url     = "https://api.mch.weixin.qq.com/pay/unifiedorder";

        $res     = self::curl_post_ssl($url, $xmldata);   //curl发出请求

        if (!$res) {

            return ['status' => 1, 'msg' => "服务器连接失败"];

        }

        $content = self::xml2array($res);   //签名失败时，打印该数据

        //

        if (strval($content['return_code']) == 'FAIL') {

            return json(['status' => 1, 'msg' => strval($content['return_msg'])]);

        }

        if (strval($content['result_code']) == 'FAIL') {

            return json(['status' => 1, 'msg' => strval($content['err_code']), ':' . strval($content['err_code_des'])]);

        }

        //第二次签名，把第一次签名成功微信传过来的数据参数加入第二次签名，prepayid

        $timest = (string)time();

        $resdata = [

            'appid'     => $appid,

            'partnerid' => $mchid,

            'prepayid'  => strval($content['prepay_id']),

            'package'   => 'Sign=WXPay',

            'noncestr'  => self::getNonceStr(),

            'timestamp' => $timest,

        ];

        $resdata['sign'] = self::makeSign($resdata, $oid);   //T同第一次，使用当前时间和随机字符串获取签名

        return json(['data' => $resdata, 'code' => 1]); //把数据传给前端，调起支付

    }

    //回调地址(逻辑处理)

    public function wxnotify()

    {

        $notify     = file_get_contents("php://input");

        $array      = $this->xml2array($notify); //微信回调数据是xml格式，转化成数组

        $order_num  = $array['out_trade_no'];

        $paynumber  = $array["transaction_id"]; //交易流水号

        $price      = $array["total_amount"]; //支付金额

        //$price      = 0.01; //支付金额

    }

    //制作字符串

    public function getNonceStr($length = 32)

    {

        $chars = "abcdefghijklmnopqrstuvwxyz0123456789";

        $str = "";

        for ($i = 0; $i < $length; $i++) {

            $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);

        }

        return $str;

    }

    //制作签名，需要支付密钥

    public function makeSign($data, $oid = 0)

    {

        //获取微信支付秘钥

        $key = PayConfig::get_wx_config_info('wxkey', $oid);;

        // 去空

        $data = array_filter($data);

        //签名步骤一：按字典序排序参数

        ksort($data);

        $string_a = http_build_query($data);

        $string_a = urldecode($string_a);

        //签名步骤二：在string后加入KEY

        //$config=$this->config;

        $string_sign_temp = $string_a . "&key=" . $key;

        //签名步骤三：MD5加密

        $sign = md5($string_sign_temp);

        // 签名步骤四：所有字符转为大写

        $result = strtoupper($sign);

        return $result;

    }

    //获得用户IP

    public function getip()

    {

        static $ip = '';

        $ip = $_SERVER['REMOTE_ADDR'];

        if (isset($_SERVER['HTTP_CDN_SRC_IP'])) {

            $ip = $_SERVER['HTTP_CDN_SRC_IP'];

        } elseif (isset($_SERVER['HTTP_CLIENT_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CLIENT_IP'])) {

            $ip = $_SERVER['HTTP_CLIENT_IP'];

        } elseif (isset($_SERVER['HTTP_X_FORWARDED_FOR']) and preg_match_all('#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#s', $_SERVER['HTTP_X_FORWARDED_FOR'], $matches)) {

            foreach ($matches[0] as $xip) {

                if (!preg_match('#^(10|172\.16|192\.168)\.#', $xip)) {

                    $ip = $xip;

                    break;

                }

            }

        }

        return $ip;

    }

    /**

     * 将一个数组转换为 XML 结构的字符串

     * @param array $arr 要转换的数组

     * @param int $level 节点层级, 1 为 Root.

     * @return string XML 结构的字符串

     */

    public function array2xml($arr, $level = 1)

    {

        $s = $level == 1 ? "<xml>" : '';

        foreach ($arr as $tagname => $value) {

            if (is_numeric($tagname)) {

                $tagname = $value['TagName'];

                unset($value['TagName']);

            }

            if (!is_array($value)) {

                $s .= "<{$tagname}>" . (!is_numeric($value) ? '<![CDATA[' : '') . $value . (!is_numeric($value) ? ']]>' : '') . "</{$tagname}>";

            } else {

                $s .= "<{$tagname}>" . $this->array2xml($value, $level + 1) . "</{$tagname}>";

            }

        }

        $s = preg_replace("/([\x01-\x08\x0b-\x0c\x0e-\x1f])+/", ' ', $s);

        return $level == 1 ? $s . "</xml>" : $s;

    }

    /**

     * 将xml转为array

     * @param  string   $xml xml字符串

     * @return array    转换得到的数组

     */

    public function xml2array($xml)

    {

        //禁止引用外部xml实体

        libxml_disable_entity_loader(false);

        $result = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);

        return $result;

    }

    //用于支付

    public function curl_post_ssl($url, $xmldata, $second = 30, $aHeader = array())

    {

        $ch = curl_init();

        //超时时间

        curl_setopt($ch, CURLOPT_TIMEOUT, $second);

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

        curl_setopt($ch, CURLOPT_URL, $url);

        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

        if (count($aHeader) >= 1) {

            curl_setopt($ch, CURLOPT_HTTPHEADER, $aHeader);

        }

        curl_setopt($ch, CURLOPT_POST, 1);

        curl_setopt($ch, CURLOPT_POSTFIELDS, $xmldata);

        $data = curl_exec($ch);

        if ($data) {

            curl_close($ch);

            return $data;

        } else {

            $error = curl_errno($ch);

            echo "call faild, errorCode:$error\n";

            curl_close($ch);

            return false;

        }

    }

    //数组转xml

    function arrayToXml($arr)

    {

        $xml = "<root>";

        foreach ($arr as $key => $val) {

            if (is_array($val)) {

                $xml .= "<" . $key . ">" . arrayToXml($val) . "</" . $key . ">";

            } else {

                $xml .= "<" . $key . ">" . $val . "</" . $key . ">";

            }

        }

        $xml .= "</root>";

        return $xml;

    }

}