using Newtonsoft.Json;
using POSV.Payment.AllinPay.Enums;
using POSV.Payment.AllinPay.Models;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;

namespace POSV.Payment.AllinPay
{
    public class AllinpayLib
    {
        private static NLog.Logger logger = NLog.LogManager.GetLogger("POSV.Payment.AllinPay");

        public static void WriteLog(LogTagType tag, string content)
        {
            logger.Warn($"[{tag.ToString()}]:{content}");
        }

        internal static Random Random = new Random();

        //测试用
        //public static string AppId { get; set; } = "1293840404734611458";
        //正式用
        public static string AppId { get; set; } = "1668228235653623810";

        ////测试用
        //public static string AppKey { get; set; } = "eaa59d04162548d581526ef6a81bc8a8";
        //正式用
        public static string AppKey { get; set; } = "ec684c893a42467a866cc78aad0b7a97";

        ///// <summary>
        ///// 平台接口地址
        ///// 测试环境
        ///// </summary>
        //public static string Url { get; set; } = "https://zhttest.sxallinpay.com/prod-api/yunshangtong/openApi/gateway";
        /// <summary>
        /// 平台接口地址
        /// 正式环境
        /// </summary>
        public static string Url { get; set; } = "https://zht.sxallinpay.com/prod-api/yunshangtong/openApi/gateway";

        /// <summary>
        /// 商户号
        /// 锦祥店通联商户号：563162058142J5Y
        /// 美耀通联商户号：56216205814X69H  
        /// 艳斌通联商户号：56216205814TS2P
        /// </summary>
        public static string VspCusid { get; set; } = "56216205814X69H";
        //测试用
        //public static string VspCusid { get; set; } = "990161054116000";

        /// <summary>
        /// 商户系统用户标识，商户系统中唯一编号。
        /// 大同市平城区开闻快餐店(锦祥店) bizUserId:ZHTQY_OUT16890697512466994
        /// 大同市平城区美耀快餐店 bizUserId:ZHTQY_OUT16916554874517117 终端号：13330966
        /// 大同市平城区艳斌餐馆 bizUserId:ZHTQY_OUT16916549249000154 终端号：13301797
        /// ZHTQY_OUT16916549249000154
        /// ZHTQY_OUT16916549249000154
        /// </summary>
        public static string BizUserId { get; set; } = "ZHTQY_OUT16916554874517117";
        //测试用
        //public static string BizUserId { get; set; } = "ZHTQY_OUT16895858764912934";


        /// <summary>
        /// 付款账号
        /// 通联平台业务参数，可有平台申请会员并分配给门店或统一使用。        
        /// </summary>
        public static string Payuserid { get; set; } = "ZHTGR_OUT16890642002687211";
        //测试用
        //public static string Payuserid { get; set; } = "ZHTQY_OUT16805986184591273";

        /// <summary>
        /// 签名（非必须参数，没有值不参与签名）
        /// </summary>
        /// <param name="dict"></param>
        /// <returns></returns>
        internal static string GetSign(Dictionary<string, string> dict)
        {
            //var secret = AppSecret;
            //var sign = secret + dict.Where(p => p.Value.IsNotNullAndWhiteSpace()).OrderBy(p => p.Key).Select(p => p.Key + p.Value).StringJoin(string.Empty) + secret;
            //var sign = dict.Where(p => p.Value.IsNotNullAndWhiteSpace()).OrderBy(p => p.Key).Select(p => p.Key + "=" + p.Value).StringJoin("&");
            var sign = getParamSrc(dict);
            Log("signStr:" + sign);
            return sign.ToMD5(1).ToUpper();
        }

        public static string getParamSrc(Dictionary<string, string> paramsMap)
        {
            var vDic = (from objDic in paramsMap.Where(p => p.Value.IsNotNullAndWhiteSpace()) orderby objDic.Key ascending select objDic);
            StringBuilder str = new StringBuilder();
            foreach (KeyValuePair<string, string> kv in vDic)
            {
                string pkey = kv.Key;
                string pvalue = kv.Value;
                str.Append(pkey + "=" + pvalue + "&");
            }

            string result = str.ToString().Substring(0, str.ToString().Length - 1);
            return result;
        }

        [Conditional("DEBUG")]
        internal static void Log(object obj)
        {
            Console.WriteLine(JsonConvert.SerializeObject(obj));

        }

        internal static TResult Request<TRequest, TResult>(TRequest request, Stopwatch watch = null)
            where TRequest : BaseParamInfo
        {
            var _method = "NULL";
            var res = "";
            try
            {
                if (watch == null)
                {
                    watch = Stopwatch.StartNew();
                }
                //request.format = "json";
                var dict = request.GetParamDict();

                _method = dict["method"];

                var sign = GetSign(dict);
                Log("sing md5:" + sign);
                request.sign = sign;
                dict.Add("sign", sign);
                res = Request(dict.Select(p => p.Key + "=" + p.Value.UrlEncode()).StringJoin("&"), request.HttpMethod);
                //Log("request result:" + res);                
                //logger.Info($"请求结果<{_method}>：{res}");

                StringBuilder str = new StringBuilder();
                str.Append("{\"response\":");
                str.Append(res);
                str.Append("}");
                var t1 = str.ToString().ToDeserialize<TResult>();
                return t1;
            }
            catch (Exception ex)
            {
                //Log("request erroe:" + ex.Message);
                logger.Error(ex, $"请求结果<{_method}>:发生错误,{ex.Message}");
                throw new Exception($"请求结果<{_method}>:发生错误");
            }
            finally
            {
                logger.Info($"请求结果<{_method}>：{res},耗时<{watch.ElapsedMilliseconds}>毫秒");
            }
        }

        /// <summary>
        /// 发起请求
        /// </summary>
        /// <param name="data"></param>
        /// <returns></returns>
        private static string Request(string data, string method)
        {
            var urlReq = Url + "?" + data;
            //WriteLog(LogTagType.RequestParams, urlReq);
            try
            {
                var content = !string.Equals(method, "post", StringComparison.OrdinalIgnoreCase) ? HttpGet(urlReq) : HttpPost(Url, data);
                //WriteLog(LogTagType.ResultContent, content);
                return content;
            }
            catch (Exception ex)
            {
                logger.Error(ex, $"{method}请求发生错误,{ex.Message}");
                throw ex;
            }
        }

        private static string HttpGet(string url)
        {
            using (var webClient = new WebClient())
            {
                webClient.Encoding = Encoding.UTF8;
                return webClient.DownloadString(url);
            }
        }

        private static string HttpPost(string url, string param)
        {
            string result = "";
            HttpWebRequest request = null;

            if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
            {
                ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;
                ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
                ServicePointManager.CheckCertificateRevocationList = false;
                ServicePointManager.DefaultConnectionLimit = 512;
                ServicePointManager.Expect100Continue = false;
                request = WebRequest.Create(url) as HttpWebRequest;
                request.ProtocolVersion = HttpVersion.Version10;
            }
            else
            {
                request = WebRequest.Create(url) as HttpWebRequest;
            }
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";
            request.Referer = null;
            request.AllowAutoRedirect = true;
            request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36";
            request.Accept = "application/json, text/plain, */*";
            request.Timeout = 5000 * 10;

            #region 添加Post 参数
            byte[] data = Encoding.UTF8.GetBytes(param);
            request.ContentLength = data.Length;



            using (Stream reqStream = request.GetRequestStream())
            {
                reqStream.Write(data, 0, data.Length);
                reqStream.Close();
            }
            #endregion

            HttpWebResponse resp = (HttpWebResponse)request.GetResponse();
            Stream stream = resp.GetResponseStream();
            //获取响应内容
            using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
            {
                result = reader.ReadToEnd();
            }
            resp.Close();
            return result;


            //using (var webClient = new WebClient())
            //{
            //    webClient.Encoding = Encoding.UTF8;
            //    webClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
            //    string reply = webClient.UploadString(url, param);
            //    return reply;
            //}
        }
    }
}