using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Web;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Net;
using System.IO;
using System.Xml.Linq;
using LitJson;

namespace Common
{
    public class WeChat
    {
        private HttpContext _context;
        public WeChat(HttpContext context)
        {
            _context = context;
        }

        #region 微信支付预处理订单

        public Dictionary<string, string> Pay(string AppId, string MchId, decimal PayMoney, string OrderNo, string SubJect, string Description, string OpenId, string ServerIP, string Key, string NotifyUrl, string Attach = "0")
        {
            Dictionary<string, string> return_result = new Dictionary<string, string>();
            int amount = (int)(PayMoney * 100);
            //具体请求参数
            var par = new SortedList<string, string>
            {
                {"appid", AppId},
                {"mch_id", MchId},
                {"nonce_str", Function.get_Random(12)},
                {"body",SubJect},
                {"detail",Description},
                {"out_trade_no",OrderNo},
                {"fee_type","CNY"},
                {"total_fee",amount.ToString()},
                {"spbill_create_ip",ServerIP},
                {"notify_url",NotifyUrl},
                {"trade_type","JSAPI"},
                {"openid",OpenId},
                {"attach",Attach}
            };

            var postStr = String.Join("&", par.Select(item => String.Format("{0}={1}", item.Key.Trim(), item.Value)).ToArray());
            var stringSignTemp = postStr + "&key=" + Key;
            Function.WriteLog(stringSignTemp, "微信支付预处理订单");
            var wxsign = Function.MD532(stringSignTemp);
            par.Add("sign", wxsign);

            var postxml = new StringBuilder();
            postxml.Append("<xml>");
            foreach (var item in par)
            {
                postxml.AppendFormat("<{0}>{1}</{0}>", item.Key, item.Value);
            }
            postxml.Append("</xml>");
            try
            {
                var result = Function.PostWebRequest("https://api.mch.weixin.qq.com/pay/unifiedorder", postxml.ToString());
                Function.WriteLog(result, "微信支付预处理订单");
                XmlDocument doc = new XmlDocument();
                doc.LoadXml(result);

                string timeStamp = Function.ConvertDateTimeInt(DateTime.Now).ToString();
                string nonce_str = Function.get_Random(12);
                string package = "prepay_id=" + doc.SelectSingleNode("/xml/prepay_id").InnerText;

                var pay_param = new SortedList<string, string>
                {
                    {"appId", AppId},
                    {"timeStamp", timeStamp},
                    {"nonceStr", nonce_str},
                    {"package", package},
                    {"signType", "MD5"}
                };
                var pay_param_str = String.Join("&", pay_param.Select(item => String.Format("{0}={1}", item.Key.Trim(), item.Value)).ToArray());
                var pay_param_str_sign = pay_param_str + "&key=" + Key;

                string paySign = Function.MD532(pay_param_str_sign).ToUpper();
                return_result.Add("appId", AppId);
                return_result.Add("timeStamp", timeStamp);
                return_result.Add("nonce_str", nonce_str);
                return_result.Add("package", package);
                return_result.Add("paySign", paySign);
            }
            catch
            {
            }
            return return_result;
        }
        
        public Dictionary<string, string> AppPay(string AppId, string MchId, decimal PayMoney, string OrderNo, string SubJect, string Description, string ServerIP, string Key, string NotifyUrl)
        {
            Dictionary<string, string> return_result = new Dictionary<string, string>();
            int amount = (int)(PayMoney * 100);
            //具体请求参数
            var par = new SortedList<string, string>
            {
                {"appid", AppId},
                {"mch_id", MchId},
                {"nonce_str", Function.get_Random(12)},
                {"body",SubJect},
                {"detail",Description},
                {"out_trade_no",OrderNo},
                {"fee_type","CNY"},
                {"total_fee",amount.ToString()},
                {"spbill_create_ip",ServerIP},
                {"notify_url",NotifyUrl},
                {"trade_type","APP"}
            };

            var postStr = String.Join("&", par.Select(item => String.Format("{0}={1}", item.Key.Trim(), item.Value)).ToArray());
            var stringSignTemp = postStr + "&key=" + Key;
            Function.WriteLog(stringSignTemp, "微信支付预处理订单");
            var wxsign = Function.MD532(stringSignTemp);
            par.Add("sign", wxsign);

            var postxml = new StringBuilder();
            postxml.Append("<xml>");
            foreach (var item in par)
            {
                postxml.AppendFormat("<{0}>{1}</{0}>", item.Key, item.Value);
            }
            postxml.Append("</xml>");
            try
            {
                var result = Function.PostWebRequest("https://api.mch.weixin.qq.com/pay/unifiedorder", postxml.ToString());
                Function.WriteLog(result, "微信支付预处理订单");
                XmlDocument doc = new XmlDocument();
                doc.LoadXml(result);

                string timeStamp = Function.ConvertDateTimeInt(DateTime.Now).ToString();
                string nonce_str = Function.get_Random(12);
                string package = "prepay_id=" + doc.SelectSingleNode("/xml/prepay_id").InnerText;

                var pay_param = new SortedList<string, string>
                {
                    {"appId", AppId},
                    {"timeStamp", timeStamp},
                    {"nonceStr", nonce_str},
                    {"package", package},
                    {"signType", "MD5"}
                };
                var pay_param_str = String.Join("&", pay_param.Select(item => String.Format("{0}={1}", item.Key.Trim(), item.Value)).ToArray());
                var pay_param_str_sign = pay_param_str + "&key=" + Key;

                string paySign = Function.MD532(pay_param_str_sign).ToUpper();
                return_result.Add("appId", AppId);
                return_result.Add("timeStamp", timeStamp);
                return_result.Add("nonce_str", nonce_str);
                return_result.Add("package", package);
                return_result.Add("paySign", paySign);
            }
            catch
            {
            }
            return return_result;
        }

        #endregion

        #region 微信支付预处理订单(H5)

        public string PayH5(string AppId, string MchId, decimal PayMoney, string OrderNo, string SubJect, string Description, string ServerIP, string Key, string NotifyUrl, string Attach = "0")
        {
            string return_result = "";
            int amount = (int)(PayMoney * 100);
            //具体请求参数
            var par = new SortedList<string, string>
            {
                {"appid", AppId},
                {"mch_id", MchId},
                {"nonce_str", Function.get_Random(12)},
                {"body",SubJect},
                {"detail",Description},
                {"out_trade_no",OrderNo},
                {"fee_type","CNY"},
                {"total_fee",amount.ToString()},
                {"spbill_create_ip",ServerIP},
                {"notify_url",NotifyUrl},
                {"trade_type","MWEB"},
                {"attach",Attach}
            };

            var postStr = String.Join("&", par.Select(item => String.Format("{0}={1}", item.Key.Trim(), item.Value)).ToArray());
            var stringSignTemp = postStr + "&key=" + Key;
            Function.WriteLog(stringSignTemp, "微信支付预处理订单(H5)");
            var wxsign = Function.MD532(stringSignTemp);
            par.Add("sign", wxsign);

            var postxml = new StringBuilder();
            postxml.Append("<xml>");
            foreach (var item in par)
            {
                postxml.AppendFormat("<{0}>{1}</{0}>", item.Key, item.Value);
            }
            postxml.Append("</xml>");
            try
            {
                var result = Function.PostWebRequest("https://api.mch.weixin.qq.com/pay/unifiedorder", postxml.ToString());
                Function.WriteLog(result, "微信支付预处理订单(H5)");
                XmlDocument doc = new XmlDocument();
                doc.LoadXml(result);
                return_result = doc.SelectSingleNode("/xml/mweb_url").InnerText;
            }
            catch (Exception ex)
            {
                Function.WriteLog(ex.ToString(), "微信支付预处理订单(H5)异常");
            }
            return return_result;
        }

        #endregion

        #region 微信支付异步通知

        public string PayCallBack(string Key, bool IsRedis = false)
        {
            var backxml = new StringBuilder();
            backxml.Append("<xml>");
            var logSb = new StringBuilder();//日志
            try
            {
                var syncIOFeature = _context.Features.Get<Microsoft.AspNetCore.Http.Features.IHttpBodyControlFeature>();
                if (syncIOFeature != null)
                {
                    syncIOFeature.AllowSynchronousIO = true;
                }
                //接收从微信后台POST过来的数据
                var s = _context.Request.Body;
                var count = 0;
                var buffer = new byte[1024];
                var builder = new StringBuilder();
                while ((count = s.Read(buffer, 0, 1024)) > 0)
                {
                    builder.Append(Encoding.UTF8.GetString(buffer, 0, count));
                }
                s.Flush();
                s.Close();
                s.Dispose();

                Function.WriteLog("\r\n========================\r\n回调通知的原始数据:" + builder.ToString(), "微信支付异步通知");
                var mValues = new SortedList<string, string>();
                var xmlDoc = new XmlDocument();
                xmlDoc.XmlResolver = null;
                xmlDoc.LoadXml(builder.ToString());
                var xmlNode = xmlDoc.FirstChild;//获取到根节点<xml>
                var nodes = xmlNode.ChildNodes;
                foreach (var xe in nodes.Cast<XmlElement>())
                {
                    mValues[xe.Name] = xe.InnerText;//获取xml的键值对到WxPayData内部的数据中
                }
                var buff = mValues.Where(pair => pair.Key != "sign" && pair.Value.ToString() != "").Aggregate("", (current, pair) => current + (pair.Key + "=" + pair.Value + "&"));
                buff = buff.Trim('&');

                var stringSignTemp = buff + "&key=" + Key;
                Function.WriteLog("待签名字符串:" + stringSignTemp, "微信支付异步通知");
                //MD5加密
                var md5 = MD5.Create();
                var bs = md5.ComputeHash(Encoding.UTF8.GetBytes(stringSignTemp));
                var sb = new StringBuilder();
                foreach (byte b in bs)
                {
                    sb.Append(b.ToString("x2"));
                }
                //所有字符转为大写
                var wxsign = sb.ToString().ToUpper();
                Function.WriteLog("签名字符串:" + wxsign, "微信支付异步通知");

                //获取接收到的签名
                string return_sign = "";
                mValues.TryGetValue("sign", out return_sign);

                Function.WriteLog("签名字符串比较:" + wxsign + "  VS  " + return_sign, "微信支付异步通知");
                if (wxsign == return_sign)
                {
                    string transaction_id = "";
                    mValues.TryGetValue("transaction_id", out transaction_id);

                    string out_trade_no = "";
                    mValues.TryGetValue("out_trade_no", out out_trade_no);

                    string result_code = "";
                    mValues.TryGetValue("result_code", out result_code);

                    string err_code = "";
                    mValues.TryGetValue("err_code", out err_code);

                    string total_fee = "";
                    mValues.TryGetValue("total_fee", out total_fee);

                    string openid = "";
                    mValues.TryGetValue("openid", out openid);

                    string attach = "";
                    mValues.TryGetValue("attach", out attach);

                    Function.WriteLog("transaction_id:" + transaction_id, "微信支付异步通知");
                    Function.WriteLog("out_trade_no:" + out_trade_no, "微信支付异步通知");
                    Function.WriteLog("result_code:" + result_code, "微信支付异步通知");
                    Function.WriteLog("err_code:" + err_code, "微信支付异步通知");
                    Function.WriteLog("total_fee:" + total_fee, "微信支付异步通知");
                    Function.WriteLog("openid:" + openid, "微信支付异步通知");
                    Function.WriteLog("attach:" + attach, "微信支付异步通知");


                    if (result_code == "SUCCESS")
                    {
                        var totalAmount = 0m;
                        decimal.TryParse(total_fee, out totalAmount);
                        var payAmount = totalAmount / 100;
                        Function.WriteLog("out_trade_no:" + out_trade_no, "微信支付异步通知");
                        if (IsRedis)
                        {
                            RedisServer.Cache.LPush("PayCallBack", "{\"out_trade_no\":\"" + out_trade_no + "\",\"transaction_id\":\"" + transaction_id + "\",\"total_fee\":\"" + total_fee + "\",\"pay_mode\":\"2\",\"openid\":\"" + openid + "\",\"attach\":\"" + attach + "\"}");
                        }
                        else
                        {
                            Function.WritePage("/PayCallBack/", Function.MD5_16(Guid.NewGuid().ToString()) + ".txt", "{\"out_trade_no\":\"" + out_trade_no + "\",\"transaction_id\":\"" + transaction_id + "\",\"total_fee\":\"" + total_fee + "\",\"pay_mode\":\"2\",\"openid\":\"" + openid + "\",\"attach\":\"" + attach + "\"}");
                        }
                        backxml.Append("<return_code><![CDATA[SUCCESS]]></return_code>");
                        backxml.AppendFormat(" <return_msg><![CDATA[{0}]]></return_msg>", err_code);
                    }
                    else
                    {
                        logSb.AppendFormat(" -->订单状态错误：{0}；", err_code);
                        backxml.Append("<return_code><![CDATA[FAIL]]></return_code>");
                        backxml.AppendFormat(" <return_msg><![CDATA[{0}]]></return_msg>", err_code);
                    }
                }
                else
                {
                    backxml.Append("<return_code><![CDATA[FAIL]]></return_code>");
                    backxml.AppendFormat(" <return_msg><![CDATA[{0}]]></return_msg>", "签名失败");
                    Function.WriteLog("微信支付----异步通知执行后日志：" + logSb.ToString(), "微信支付异步通知");
                }
            }
            catch (Exception ex)
            {
                backxml.Append("<return_code><![CDATA[FAIL]]></return_code>");
                backxml.AppendFormat(" <return_msg><![CDATA[{0}]]></return_msg>", "签名失败");
                Function.WriteLog("微信支付----异步通知执行后日志：" + ex.ToString(), "微信支付异步通知");
            }
            backxml.Append("</xml>");
            return backxml.ToString();
        }

        public string PayCallBack2(string Key, string BackContent, bool IsRedis = false)
        {
            var backxml = new StringBuilder();
            backxml.Append("<xml>");
            var logSb = new StringBuilder();//日志
            try
            {
                var syncIOFeature = _context.Features.Get<Microsoft.AspNetCore.Http.Features.IHttpBodyControlFeature>();
                if (syncIOFeature != null)
                {
                    syncIOFeature.AllowSynchronousIO = true;
                }
                //接收从微信后台POST过来的数据
                var mValues = new SortedList<string, string>();
                var xmlDoc = new XmlDocument();
                xmlDoc.XmlResolver = null;
                xmlDoc.LoadXml(BackContent);
                var xmlNode = xmlDoc.FirstChild;//获取到根节点<xml>
                var nodes = xmlNode.ChildNodes;
                foreach (var xe in nodes.Cast<XmlElement>())
                {
                    mValues[xe.Name] = xe.InnerText;//获取xml的键值对到WxPayData内部的数据中
                }
                var buff = mValues.Where(pair => pair.Key != "sign" && pair.Value.ToString() != "").Aggregate("", (current, pair) => current + (pair.Key + "=" + pair.Value + "&"));
                buff = buff.Trim('&');

                var stringSignTemp = buff + "&key=" + Key;
                Function.WriteLog("待签名字符串:" + stringSignTemp, "微信支付异步通知");
                //MD5加密
                var md5 = MD5.Create();
                var bs = md5.ComputeHash(Encoding.UTF8.GetBytes(stringSignTemp));
                var sb = new StringBuilder();
                foreach (byte b in bs)
                {
                    sb.Append(b.ToString("x2"));
                }
                //所有字符转为大写
                var wxsign = sb.ToString().ToUpper();
                Function.WriteLog("签名字符串:" + wxsign, "微信支付异步通知");

                //获取接收到的签名
                string return_sign = "";
                mValues.TryGetValue("sign", out return_sign);

                Function.WriteLog("签名字符串比较:" + wxsign + "  VS  " + return_sign, "微信支付异步通知");
                if (wxsign == return_sign)
                {
                    string transaction_id = "";
                    mValues.TryGetValue("transaction_id", out transaction_id);

                    string out_trade_no = "";
                    mValues.TryGetValue("out_trade_no", out out_trade_no);

                    string result_code = "";
                    mValues.TryGetValue("result_code", out result_code);

                    string err_code = "";
                    mValues.TryGetValue("err_code", out err_code);

                    string total_fee = "";
                    mValues.TryGetValue("total_fee", out total_fee);

                    string openid = "";
                    mValues.TryGetValue("openid", out openid);

                    string attach = "";
                    mValues.TryGetValue("attach", out attach);

                    Function.WriteLog("transaction_id:" + transaction_id, "微信支付异步通知");
                    Function.WriteLog("out_trade_no:" + out_trade_no, "微信支付异步通知");
                    Function.WriteLog("result_code:" + result_code, "微信支付异步通知");
                    Function.WriteLog("err_code:" + err_code, "微信支付异步通知");
                    Function.WriteLog("total_fee:" + total_fee, "微信支付异步通知");
                    Function.WriteLog("openid:" + openid, "微信支付异步通知");
                    Function.WriteLog("attach:" + attach, "微信支付异步通知");


                    if (result_code == "SUCCESS")
                    {
                        var totalAmount = 0m;
                        decimal.TryParse(total_fee, out totalAmount);
                        var payAmount = totalAmount / 100;
                        Function.WriteLog("out_trade_no:" + out_trade_no, "微信支付异步通知");
                        if (IsRedis)
                        {
                            RedisServer.Cache.LPush("PayCallBack", "{\"out_trade_no\":\"" + out_trade_no + "\",\"transaction_id\":\"" + transaction_id + "\",\"total_fee\":\"" + total_fee + "\",\"pay_mode\":\"2\",\"openid\":\"" + openid + "\",\"attach\":\"" + attach + "\"}");
                        }
                        else
                        {
                            Function.WritePage("/PayCallBack/", Function.MD5_16(Guid.NewGuid().ToString()) + ".txt", "{\"out_trade_no\":\"" + out_trade_no + "\",\"transaction_id\":\"" + transaction_id + "\",\"total_fee\":\"" + total_fee + "\",\"pay_mode\":\"2\",\"openid\":\"" + openid + "\",\"attach\":\"" + attach + "\"}");
                        }
                        backxml.Append("<return_code><![CDATA[SUCCESS]]></return_code>");
                        backxml.AppendFormat(" <return_msg><![CDATA[{0}]]></return_msg>", err_code);
                    }
                    else
                    {
                        logSb.AppendFormat(" -->订单状态错误：{0}；", err_code);
                        backxml.Append("<return_code><![CDATA[FAIL]]></return_code>");
                        backxml.AppendFormat(" <return_msg><![CDATA[{0}]]></return_msg>", err_code);
                    }
                }
                else
                {
                    backxml.Append("<return_code><![CDATA[FAIL]]></return_code>");
                    backxml.AppendFormat(" <return_msg><![CDATA[{0}]]></return_msg>", "签名失败");
                    Function.WriteLog("微信支付----异步通知执行后日志：" + logSb.ToString(), "微信支付异步通知");
                }
            }
            catch (Exception ex)
            {
                backxml.Append("<return_code><![CDATA[FAIL]]></return_code>");
                backxml.AppendFormat(" <return_msg><![CDATA[{0}]]></return_msg>", "签名失败");
                Function.WriteLog("微信支付----异步通知执行后日志：" + ex.ToString(), "微信支付异步通知");
            }
            backxml.Append("</xml>");
            return backxml.ToString();
        }

        #endregion

        #region 微信分享

        public Dictionary<string, string> Share(string AppId, string AppSecret, string Url, bool CacheToken = true)
        {
            Dictionary<string, string> result = new Dictionary<string, string>();
            try
            {
                string token = getWXToken(AppId, AppSecret, CacheToken);
                string content = Function.GetWebRequest("https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + token + "&type=jsapi");
                Function.WriteLog("content:" + content, "微信参数检查");
                JsonData json = JsonMapper.ToObject(content);
                string ticket = "";
                if (json["errcode"].ToString() == "0")
                {
                    ticket = json["ticket"].ToString();
                }
                string noncestr = Function.get_Random(10);
                string timestamp = Function.ConvertDateTimeInt(DateTime.Now).ToString();
                string sign = "jsapi_ticket=" + ticket + "&noncestr=" + noncestr + "&timestamp=" + timestamp + "&url=" + Url;
                Function.WriteLog("sign:" + sign, "微信参数检查");
                sign = SHA1(sign);
                result.Add("appId", AppId);
                result.Add("noncestr", noncestr);
                result.Add("timestamp", timestamp);
                result.Add("sign", sign);
            }
            catch (Exception ex)
            {
                Function.WriteLog(DateTime.Now.ToString() + ":" + ex.ToString(), "获取微信分享参数异常");
            }
            return result;
        }

        #endregion

        #region 微信退款

        public string Refund(string AppId, string MchId,string OrderNo, string TradeNo, decimal TotalPrice, string Key, string CertPath)
        {
            //生成订单号
            var batchNo = DateTime.Now.ToString("HHmmss") + Function.get_Random(28);
            var payamount = (TotalPrice * 100).ToString("f0");
            //具体请求参数
            var parwxrefund = new SortedList<string, string>
            {
                {"appid", AppId },
                {"mch_id",MchId},
                {"nonce_str", Function.get_Random(10)},
                {"out_trade_no",OrderNo},
                //{"transaction_id",TradeNo},
                {"out_refund_no",batchNo},
                {"total_fee", payamount},
                {"refund_fee",payamount},
                {"op_user_id",MchId},
            };
            if (!string.IsNullOrEmpty(TradeNo))
            {
                parwxrefund.Add("transaction_id", TradeNo);
            }
            var signStr = String.Join("&", parwxrefund.Select(item => String.Format("{0}={1}", item.Key.Trim(), item.Value)).ToArray());;
            var stringSignTemp = signStr + "&key=" + Key;
            var wxsign = Function.MD532(stringSignTemp);
            parwxrefund.Add("sign", wxsign);

            var postxml = new StringBuilder();
            postxml.Append("<xml>");
            foreach (var item in parwxrefund)
            {
                postxml.AppendFormat("<{0}>{1}</{0}>", item.Key, item.Value);
            }
            postxml.Append("</xml>");

            //退款接口地址
            string url = "https://api.mch.weixin.qq.com/secapi/pay/refund";
            //本地或者服务器的证书位置（证书在微信支付申请成功发来的通知邮件中）
            string cert = Function.getPath(CertPath);

            try
            {
                var cer = new X509Certificate2(cert, MchId, X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);//证书
                var webrequest = (HttpWebRequest)HttpWebRequest.Create(url);
                webrequest.ClientCertificates.Add(cer);
                webrequest.Method = "post";
                byte[] postdatabyte = Encoding.UTF8.GetBytes(postxml.ToString());
                webrequest.ContentLength = postdatabyte.Length;
                Stream stream = webrequest.GetRequestStream();
                stream.Write(postdatabyte, 0, postdatabyte.Length);
                stream.Close();
                var httpWebResponse = (HttpWebResponse)webrequest.GetResponse();
                var streamReader = new StreamReader(httpWebResponse.GetResponseStream());
                string responseContent = streamReader.ReadToEnd();
                Function.WriteLog("微信退款回调内容：" + responseContent, "微信退款");

                var res = XDocument.Parse(responseContent);
                var xElement = res.Element("xml");
                if (xElement != null)
                {
                    var element = xElement.Element("return_code");
                    if (element != null)
                    {
                        var returnCode = element.Value;
                        if (returnCode.Contains("SUCCESS"))
                        {
                            //商户订单号
                            string out_trade_no = "";
                            var xElement1 = xElement.Element("out_trade_no");
                            if (xElement1 != null)
                            {
                                out_trade_no = "success|" + xElement1.Value;
                                Function.WriteLog("微信退款修改订单状态：" + out_trade_no, "微信退款");
                            }
                            //业务处理
                            return out_trade_no;
                        }
                        else
                        {
                            Function.WriteLog("微信支付----退款接口返回错误：-》》" + responseContent, "微信退款");
                            //业务处理
                            return responseContent;
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Function.WriteLog("微信支付退款----异常：-》》" + ex.ToString(), "微信退款");
                //业务处理
                return ex.ToString();
            }
            return "";
        }

        #endregion

        #region 公对零钱
        
        public string Change(string AppId, string MchId, string ServerIP, string OrderNo, string OpenId, decimal TotalPrice, string Detail, string Key, string CertPath)
        {
            var payamount = (TotalPrice * 100).ToString("f0");
            //具体请求参数
            var parwxrefund = new SortedList<string, string>
            {
                {"mch_appid", AppId },
                {"mchid",MchId},
                {"nonce_str", Function.get_Random(10)},
                {"partner_trade_no",OrderNo},
                {"openid",OpenId},
                {"check_name","NO_CHECK"},
                {"amount", payamount},
                {"desc",Detail},
                {"spbill_create_ip",ServerIP},
            };
            var signStr = String.Join("&", parwxrefund.Select(item => String.Format("{0}={1}", item.Key.Trim(), item.Value)).ToArray()); ;
            var stringSignTemp = signStr + "&key=" + Key;
            var wxsign = Function.MD532(stringSignTemp);
            parwxrefund.Add("sign", wxsign);

            var postxml = new StringBuilder();
            postxml.Append("<xml>");
            foreach (var item in parwxrefund)
            {
                postxml.AppendFormat("<{0}>{1}</{0}>", item.Key, item.Value);
            }
            postxml.Append("</xml>");

            //接口地址
            string url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers";
            //本地或者服务器的证书位置（证书在微信支付申请成功发来的通知邮件中）
            string cert = Function.getPath(CertPath);

            try
            {
                var cer = new X509Certificate2(cert, MchId, X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);//证书
                var webrequest = (HttpWebRequest)HttpWebRequest.Create(url);
                webrequest.ClientCertificates.Add(cer);
                webrequest.Method = "post";
                byte[] postdatabyte = Encoding.UTF8.GetBytes(postxml.ToString());
                webrequest.ContentLength = postdatabyte.Length;
                Stream stream = webrequest.GetRequestStream();
                stream.Write(postdatabyte, 0, postdatabyte.Length);
                stream.Close();
                var httpWebResponse = (HttpWebResponse)webrequest.GetResponse();
                var streamReader = new StreamReader(httpWebResponse.GetResponseStream());
                string responseContent = streamReader.ReadToEnd();
                Function.WriteLog("回调内容：" + responseContent, "零钱公对私");

                var res = XDocument.Parse(responseContent);
                var xElement = res.Element("xml");
                if (xElement != null)
                {
                    var element = xElement.Element("return_code");
                    if (element != null)
                    {
                        var returnCode = element.Value;
                        if (returnCode.Contains("SUCCESS"))
                        {
                            //微信付款单号
                            string payment_no = "";
                            var xElement1 = xElement.Element("payment_no");
                            if (xElement1 != null)
                            {
                                payment_no = "success|" + xElement1.Value;
                                Function.WriteLog("微信付款单号：" + payment_no, "零钱公对私");
                            }
                            //业务处理
                            return payment_no;
                        }
                        else
                        {
                            Function.WriteLog("零钱公对私----接口返回错误：" + responseContent, "零钱公对私");
                            //业务处理
                            return responseContent;
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Function.WriteLog("零钱公对私----异常：" + ex.ToString(), "零钱公对私");
                //业务处理
                return ex.ToString();
            }
            return "";
        }

        #endregion

        #region 红包发放

        public string RedPackage(string AppId, string MchId, string ServerIP, string OrderNo, string OpenId, decimal TotalPrice, string SendName, string Wishing, string ActName, string Remark, string kind, string Key, string CertPath)
        {
            var payamount = (TotalPrice * 100).ToString("f0");
            //具体请求参数
            var parwxrefund = new SortedList<string, string>
            {
                {"nonce_str", Function.get_Random(10)},
                {"mch_billno",OrderNo},
                {"mch_id",MchId},
                {"wxappid", AppId },
                {"send_name",SendName},
                {"re_openid",OpenId},
                {"total_amount", payamount},
                {"total_num","1"},
                {"wishing",Wishing},
                {"client_ip",ServerIP},
                {"act_name",ActName},
                {"remark",Remark},
                {"scene_id","PRODUCT_"+kind},
            };
            var signStr = String.Join("&", parwxrefund.Select(item => String.Format("{0}={1}", item.Key.Trim(), item.Value)).ToArray()); ;
            var stringSignTemp = signStr + "&key=" + Key;
            var wxsign = Function.MD532(stringSignTemp);
            parwxrefund.Add("sign", wxsign);

            var postxml = new StringBuilder();
            postxml.Append("<xml>");
            foreach (var item in parwxrefund)
            {
                postxml.AppendFormat("<{0}>{1}</{0}>", item.Key, item.Value);
            }
            postxml.Append("</xml>");
            Function.WriteLog("请求参数：" + postxml.ToString(), "微信红包发放");

            //接口地址
            string url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack";
            //本地或者服务器的证书位置（证书在微信支付申请成功发来的通知邮件中）
            string cert = Function.getPath(CertPath);

            try
            {
                var cer = new X509Certificate2(cert, MchId, X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);//证书
                var webrequest = (HttpWebRequest)HttpWebRequest.Create(url);
                webrequest.ClientCertificates.Add(cer);
                webrequest.Method = "post";
                byte[] postdatabyte = Encoding.UTF8.GetBytes(postxml.ToString());
                webrequest.ContentLength = postdatabyte.Length;
                Stream stream = webrequest.GetRequestStream();
                stream.Write(postdatabyte, 0, postdatabyte.Length);
                stream.Close();
                var httpWebResponse = (HttpWebResponse)webrequest.GetResponse();
                var streamReader = new StreamReader(httpWebResponse.GetResponseStream());
                string responseContent = streamReader.ReadToEnd();
                Function.WriteLog("回调内容：" + responseContent, "微信红包发放");

                var res = XDocument.Parse(responseContent);
                var xElement = res.Element("xml");
                if (xElement != null)
                {
                    var element = xElement.Element("return_code");
                    if (element != null)
                    {
                        var returnCode = element.Value;
                        if (returnCode.Contains("SUCCESS"))
                        {
                            //微信付款单号
                            string payment_no = "";
                            var xElement1 = xElement.Element("payment_no");
                            if (xElement1 != null)
                            {
                                payment_no = "success|" + xElement1.Value;
                                Function.WriteLog("微信付款单号：" + payment_no, "微信红包发放");
                            }
                            //业务处理
                            return payment_no;
                        }
                        else
                        {
                            Function.WriteLog("微信红包发放----接口返回错误：" + responseContent, "微信红包发放");
                            //业务处理
                            return responseContent;
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Function.WriteLog("微信红包发放----异常：" + ex.ToString(), "微信红包发放");
                //业务处理
                return ex.ToString();
            }
            return "";
        }

        #endregion

        #region 发送模板消息

        public void SendModuleMsg(string AppId, string AppSecret, string OpenId, string TemplateId, string Url, Dictionary<string, string> Msg)
        {
            string token = getWXToken(AppId, AppSecret);
            string MsgData = "";
            foreach (string key in Msg.Keys)
            {
                MsgData += "\"" + key + "\": {" +
                                "\"value\":\"" + Msg[key] + "\"," +
                                "\"color\":\"#173177\"" +
                            "},";
            }
            MsgData = MsgData.TrimEnd(',');
            string requestData = "{" +
                                   "\"touser\":\"" + OpenId + "\"," +
                                   "\"template_id\":\"" + TemplateId + "\"," +
                                   "\"url\":\"" + Url + "\"," +
                                   "\"topcolor\":\"#FF0000\"," +
                                   "\"data\":{" + MsgData +
                                       "}" +
                                   "}";
            string result = Function.PostWebRequest("https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=" + token, requestData);
            Function.WriteLog(result, "发送模板消息");
        }

        #endregion

        #region 接收事件推送

        public void ReceiveEventMsg()
        {
            try
            {
                //接收从微信后台POST过来的数据
                var s = _context.Request.Body;
                var count = 0;
                var buffer = new byte[1024];
                var builder = new StringBuilder();
                while ((count = s.Read(buffer, 0, 1024)) > 0)
                {
                    builder.Append(Encoding.UTF8.GetString(buffer, 0, count));
                }
                s.Flush();
                s.Close();
                s.Dispose();

                Function.WriteLog("\r\n========================\r\n原始数据:" + builder.ToString(), "接收事件推送");
                string json = "";
                var mValues = new SortedList<string, string>();
                var xmlDoc = new XmlDocument();
                xmlDoc.LoadXml(builder.ToString());
                var xmlNode = xmlDoc.FirstChild;//获取到根节点<xml>
                var nodes = xmlNode.ChildNodes;
                foreach (var xe in nodes.Cast<XmlElement>())
                {
                    json = "\"" + xe.Name + "\":\"" + xe.InnerText + "\","; //获取xml的键值对到WxPayData内部的数据中
                }
                json = json.TrimEnd(',');
                Function.WritePage("/ReceiveEventMsg/", Function.MD5_16(Guid.NewGuid().ToString()) + ".txt", "{" + json + "}");
            }
            catch (Exception ex)
            {
                Function.WriteLog("微信支付----异步通知执行后日志：" + ex.ToString(), "接收事件推送");
            }
        }

        #endregion

        #region 自定3*5义菜单

        public string SetMenu(string AppId, string AppSecret, Dictionary<string, Dictionary<string, string>> Menu)
        {
            string json = "{\"button\":[";
            foreach (string key in Menu.Keys)
            {
                Dictionary<string, string> sub = Menu[key];
                if (sub.Count == 1)
                {
                    json += "{\"type\":\"view\",\"name\":\"" + key + "\",\"url\":\"" + sub["url"] + "\"},";
                }
                else
                {
                    string subjson = "";
                    foreach (string subkey in sub.Keys)
                    {
                        subjson += "{\"type\":\"view\",\"name\":\"" + subkey + "\",\"url\":\"" + sub["url"] + "\"},";
                    }
                    subjson = subjson.TrimEnd(',');
                    json += "{\"type\":\"view\",\"name\":\"" + key + "\",\"sub_button\":[" + subjson + "],";
                }
            }
            json = json.TrimEnd(',');
            json += "]}";
            string token = getWXToken(AppId, AppSecret);
            string result = Function.PostWebRequest("https://api.weixin.qq.com/cgi-bin/menu/create?access_token=" + token, json);
            JsonData jsonObj = JsonMapper.ToObject(result);
            if (jsonObj["errcode"].ToString() == "0")
            {
                return "success";
            }
            return jsonObj["errmsg"].ToString();
        }

        #endregion



        #region 公用方法

        public string SHA1(string content)
        {
            try
            {
                SHA1 sha1 = new SHA1CryptoServiceProvider();
                byte[] bytes_in = Encoding.UTF8.GetBytes(content);
                byte[] bytes_out = sha1.ComputeHash(bytes_in);
                sha1.Dispose();
                string result = BitConverter.ToString(bytes_out);
                result = result.Replace("-", "");
                return result;
            }
            catch (Exception ex)
            {
                throw new Exception("SHA1加密出错：" + ex.Message);
            }
        }

        #region 获取token

        public string getWXToken(string AppId, string AppSecret, bool Cache = true)
        {
            string token = "";
            if (Cache)
            {
                string time = Function.ReadInstance("/WeChat/TokenTimeSet.txt");
                if (!string.IsNullOrEmpty(time))
                {
                    string[] times = time.Split('|');
                    DateTime date = DateTime.Parse(times[0]);
                    if (date.AddMinutes(100) > DateTime.Now)
                    {
                        token = times[1];
                    }
                }
            }
            if (string.IsNullOrEmpty(token))
            {
                string jsonstr = Function.GetWebRequest("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + AppId + "&secret=" + AppSecret);
                Function.WriteLog(jsonstr, "获取token");
                if (jsonstr.Contains("access_token"))
                {
                    JsonData tokenjson = JsonMapper.ToObject(jsonstr);
                    string access_token = tokenjson["access_token"].ToString();
                    if (Cache)
                    {
                        Function.WritePage("/WeChat/", "TokenTimeSet.txt", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "|" + access_token);
                    }
                    return access_token;
                }
            }
            return token;
        }

        #endregion

        #endregion
    }
}