<?php

namespace service;

use EasyWeChat\Foundation\Application;
use EasyWeChat\Payment\Order;
use think\exception\ValidateException;
use think\Url;
use app\admin\model\wechat\WechatMessage;
use service\SystemConfigService;
use service\AdminException;
use service\HookService;
use Exception;
use EasyWeChat\Encryption\EncryptionException;

/**快手小程序接口
 * Class WechatMinService
 * @package service
 */
class KuaiMiniProgramService
{

    protected static $instance;
    const KS_LINK = 'https://open.kuaishou.com/oauth2/mp/';
    const KS_PAY = 'https://open.kuaishou.com/openapi/mp/developer/epay/';
    const CODE2_SESSION_URL = self::KS_LINK . 'code2session';
    const ACCESS_TOKEN_URL = 'https://open.kuaishou.com/oauth2/access_token';
    const CREATE_ORDER = self::KS_PAY . 'create_order';
    const REFUND_ORDER_URL='https://open.kuaishou.com/openapi/mp/developer/epay/apply_refund';
    protected $appid;
    protected $appSecret;
    public $data = null;
    public  function __construct()
    {
        $kuaishou = SystemConfigService::more(['site_url', 'kuai_mini_appid', 'kuai_mini_secret']);
        $this->appid = isset($kuaishou['kuai_mini_appid']) ? trim($kuaishou['kuai_mini_appid']) : '';
        $this->appSecret = isset($kuaishou['kuai_mini_secret']) ? trim($kuaishou['kuai_mini_secret']) : '';
    }

    /**
     * 获得用户信息 根据code 获取session_key
     * @param array|string $openid
     * @return $userInfo
     */
    public  function getUserInfo($code)
    {
        try {
            $dat = array(
                'app_id' => $this->appid,
                'app_secret' => $this->appSecret,
                'js_code' => $code
            );
            if (isset($code)) {
                $res = self::curlPost(self::CODE2_SESSION_URL, $dat);
                $data = json_decode($res, true);
                if ($data['result'] == 1) {
                    return $data;
                } else {
                    throw new ValidateException("获取失败");
                }
            } else {
                throw new ValidateException("获取失败");
            }
        } catch (\Throwable $e) {
            throw new ValidateException($e->getMessage());
        }
    }


    /**
     * 加密数据解密
     * @param $sessionKey
     * @param $iv
     * @param $encryptData
     * @return $userInfo
     */
    public static function encryptor($sessionKey, $iv, $encrypted)
    {
        try {
            $decrypted = openssl_decrypt(
                base64_decode($encrypted, true),
                'aes-128-cbc',
                base64_decode($sessionKey, true),
                OPENSSL_RAW_DATA | OPENSSL_NO_PADDING,
                base64_decode($iv, true)
            );
        } catch (Exception $e) {
            throw new EncryptionException($e->getMessage(), EncryptionException::ERROR_DECRYPT_AES);
        }

        if (is_null($result = json_decode(self::decode($decrypted), true))) {
            throw new EncryptionException('ILLEGAL_BUFFER', EncryptionException::ILLEGAL_BUFFER);
        }
        return $result;
    }
    public static function decode($decrypted)
    {
        $pad = ord(substr($decrypted, -1));
        if ($pad < 1 || $pad > 32) {
            $pad = 0;
        }
        return substr($decrypted, 0, (strlen($decrypted) - $pad));
    }

    /**
     * 生成支付订单对象
     * @param $openid
     * @param $out_trade_no
     * @param $total_fee
     * @param $attach
     * @param $body
     * @param string $detail
     * @param string $trade_type
     * @param array $options
     * @return Order
     */
    protected static function paymentOrder($openid, $out_trade_no, $total_fee, $attach, $body, $detail = '', $trade_type = 'JSAPI', $options = [])
    {
        $total_fee = bcmul($total_fee, 100, 0);
        $order = array_merge(compact('openid', 'out_trade_no', 'total_fee', 'attach', 'body', 'detail', 'trade_type'), $options);
        if ($order['detail'] == '') unset($order['detail']);
        return new Order($order);
    }

    
    /**
     * 获得jsSdk支付参数
     * @param $openid
     * @param $out_trade_no
     * @param $total_fee
     * @param $attach
     * @param $body
     * @param string $detail
     * @param string $trade_type
     * @param array $options
     * @return array|string
     */
    public  function jsPay($openid, $out_trade_no, $total_fee, $attach, $body, $detail = '', $trade_type = 'JSAPI', $options = [])
    {
       
        $time = time();
            $price = $total_fee*100;
            $config = [
                'access_token' =>self::get_token(),
                'app_id' => $this->appid,
            ];
            $data = [
                'open_id' => $openid,
                'out_order_no' =>  $out_trade_no, //订单号
                'total_amount' => $price,  //金额 单位:分
                'detail' => $body,         //支付的内容
                'subject' =>$body,     //支付的标题
                'type' => 1953,
                'attach'=> $attach,
                'expire_time' => 3600,
                'notify_url'=>SystemConfigService::get('site_url') . Url::build('wap/Kuaishou/notify'),
            ];
            $data['sign'] = self::generate_sign($config,$data);
            $url = self::CREATE_ORDER.'?' . http_build_query($config);
            $json = json_encode($data, 320);
            $res = self::jsonPost($url, $json);
            $res=json_decode($res,true);
            if($res['result']==1)
                return $res['order_info'];
            else throw new ValidateException($res['error_msg']);
            
           
    }

    public  function generate_sign($query, $postData)
    {
        unset($query['access_token']);
        $arr = array_merge($query, $postData);
        foreach ($arr as $k => $item) {
            if (empty($item)) {
                unset($arr[$k]);
            }
        }
        ksort($arr, 2);
        $str = '';
        foreach ($arr as $k => $v) {
            $str .= $k . '=' . $v . '&';
        }
        $str = substr($str, 0, strlen($str) - 1);
        $md5 = $str . $this->appSecret;
        return md5($md5);
    }
    public   function get_token()
    {
        try {
            $postData['app_id'] = $this->appid;
            $postData['app_secret'] = $this->appSecret;
            $postData['grant_type'] = 'client_credentials';
            $res = self::curlPost(self::ACCESS_TOKEN_URL, $postData);
            $res = json_decode($res, 1);
            return $res['access_token'];
        } catch (\Throwable $e) {
            throw new ValidateException($e->getMessage());
        }
    }

    /** 根据订单号退款
     * @param $orderNo
     * @param array $opt
     * @return bool
     */
    public function createRefund($order){ 
        $config = [ 
            'access_token' => $this->get_token(), 
            'app_id' => $this->appid, 
        ]; 
        $params = [ 
            'out_order_no'  => (string)$order['order_id'], 
            'out_refund_no' => 'ks_refund_'. (string)$order['order_id'], 
            'reason' =>$order['refund_reason_wap_explain'] ?? '用户申请退款', 
            'notify_url' => SystemConfigService::get('site_url') . Url::build('wap/kuaishou/refundNotify'),
            'refund_amount' =>(int)($order['refund_price']*100), 
        ]; 
        $params['sign'] = $this->generate_sign($config,$params); 
        $url = self::REFUND_ORDER_URL.'?'. http_build_query($config); 
        $json = json_encode($params, 320); 
        $res = $this->jsonPost($url, $json); 
        return json_decode($res, true); 
    } 


    public function jsonPost($url, $data = NULL, $times = 0)
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($curl, CURLOPT_POST, 1);
        curl_setopt($curl, CURLOPT_TIMEOUT, 2); //超时时间2秒
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        curl_setopt($curl, CURLOPT_HEADER, 0);
        curl_setopt($curl, CURLOPT_HTTPHEADER, array(
            'Content-Type: application/json; charset=utf-8',
            'Content-Length:' . strlen($data),
            'Cache-Control: no-cache',
            'Pragma: no-cache'
        ));
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $res = curl_exec($curl);
        curl_close($curl);
        return $res;
    }

    public static function curlGet($url = '', $options = array())
    {
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
        if (!empty($options)) {
            curl_setopt_array($ch, $options);
        }
        //https请求 不验证证书和host
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }
    public function curlPost($url = '', $postData = '', $options = array())
    {
        if (is_array($postData)) {
            $postData = http_build_query($postData);
        }
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
        if (!empty($options)) {
            curl_setopt_array($ch, $options);
        }
        //https请求 不验证证书和host
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }
}