using Microsoft.Extensions.Options;
using NPOI.SS.Formula.Functions;
using Senparc.Weixin.TenPayV3;
using Senparc.Weixin.TenPayV3.Apis;
using Senparc.Weixin.TenPayV3.Apis.BasePay;
using Senparc.Weixin.TenPayV3.Entities;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading;
using System.Threading.Tasks;


namespace New_College.Common.Helper
{
    public static class WeChatPayV3
    {



        /// <summary>
        ///  扫码支付-Native下单API
        /// </summary>
        /// <returns></returns>
        public static async Task<MemoryStream> QrCodePay(int Price, string title)
        {
            ///native
            string url = "https://api.mch.weixin.qq.com/v3/pay/transactions/native";

            //使用 Native 支付，输出二维码并展示
            MemoryStream fileStream = null;//输出图片的URL
            var price = (int)(Price * 100);
            var name = title + " - Native 支付";
            var sp_billno = string.Format("{0}{1}{2}", WeixinConfig.MCHID, SystemTime.Now.ToString("yyyyMMddHHmmss"),
                            TenPayV3Util.BuildRandomStr(6));
            var notifyUrl = WeixinConfig.NotifyUrl;
            TransactionsRequestData requestData = new(WeixinConfig.Appid, WeixinConfig.MCHID, name, sp_billno, new TenpayDateTime(DateTime.Now.AddHours(1)), null, notifyUrl, null, new() { currency = "CNY", total = price }, null, null, null, null);
            BasePayApis basePayApis = new BasePayApis();
            var result = await basePayApis.NativeAsync(requestData);
            //进行安全签名验证
            if (result.VerifySignSuccess == true)
            {
                fileStream = QrCodeHelper.GerQrCodeStream(result.code_url);
            }
            else
            {
                fileStream = QrCodeHelper.GetTextImageStream("Native Pay 未能通过签名验证，无法显示二维码");
            }
            return fileStream;
        }


        /**
        * 
        * 统一下单
        * @param WxPaydata inputObj 提交给统一下单API的参数
        * @param int timeOut 超时时间
        * @throws WePayException
        * @return 成功时返回，其他抛异常
        */
        public static WxPayData UnifiedOrder(WxPayData inputObj, int timeOut = 60)
        {
            string url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
            //检测必填参数
            if (!inputObj.IsSet("out_trade_no"))
            {
                throw new Exception("缺少统一支付接口必填参数out_trade_no！");
            }
            else if (!inputObj.IsSet("body"))
            {
                throw new Exception("缺少统一支付接口必填参数body！");
            }
            else if (!inputObj.IsSet("total_fee"))
            {
                throw new Exception("缺少统一支付接口必填参数total_fee！");
            }
            else if (!inputObj.IsSet("trade_type"))
            {
                throw new Exception("缺少统一支付接口必填参数trade_type！");
            }

            //关联参数
            if (inputObj.GetValue("trade_type").ToString() == "JSAPI" && !inputObj.IsSet("openid"))
            {
                throw new Exception("统一支付接口中，缺少必填参数openid！trade_type为JSAPI时，openid为必填参数！");
            }
            if (inputObj.GetValue("trade_type").ToString() == "NATIVE" && !inputObj.IsSet("product_id"))
            {
                throw new Exception("统一支付接口中，缺少必填参数product_id！trade_type为JSAPI时，product_id为必填参数！");
            }

            //异步通知url未设置，则使用配置文件中的url
            if (!inputObj.IsSet("notify_url"))
            {
                inputObj.SetValue("notify_url", WeixinConfig.NotifyUrl);//异步通知url
            }

            inputObj.SetValue("appid", WeixinConfig.Appid);//公众账号ID
            inputObj.SetValue("mch_id", WeixinConfig.MCHID);//商户号
            inputObj.SetValue("spbill_create_ip", WePayConfig.IP);//终端ip              
            inputObj.SetValue("nonce_str", GenerateNonceStr());//随机字符串

            //签名
            inputObj.SetValue("sign", inputObj.MakeSign());
            string xml = inputObj.ToXml();

            var start = DateTime.Now;

            // Log.Info("XcxPayApi", "UnfiedOrder request : " + xml);
            string response = HttpPost(xml, url, "application/xml", timeOut);
            //Log.Info("XcxPayApi", "UnfiedOrder response : " + response);
            // WebHookHelper.WebHookmarkdownSend(response);

            var end = DateTime.Now;
            int timeCost = (int)((end - start).TotalMilliseconds);

            WxPayData result = new WxPayData();
            result.FromXml(response);
            //  ReportCostTime(url, timeCost, result);//测速上报网络不好时使用
            return result;
        }
        /// <summary>
        /// 生成随机数
        /// </summary>
        /// <returns></returns>
        public static string GenerateNonceStr()
        {
            return Guid.NewGuid().ToString().Replace("-", "");
        }
        /// <summary>
        /// POST请求
        /// </summary>
        /// <param name="postData"></param>
        /// <param name="url"></param>
        /// <param name="contentType">application/xml、application/json、application/text、application/x-www-form-urlencoded</param>
        /// <param name="timeOut"></param>
        /// <param name="headers"></param>
        /// <returns></returns>
        public static string HttpPost(string postData, string url, string contentType = null, int timeOut = 30, Dictionary<string, string> headers = null)
        {
            postData = postData ?? "";

            var httpClientHandler = new HttpClientHandler
            {
                ServerCertificateCustomValidationCallback = (message, certificate2, arg3, arg4) => true
            };
            using (HttpClient httpClient = new HttpClient(httpClientHandler))
            {
                if (headers != null)
                {
                    foreach (var header in headers)
                        httpClient.DefaultRequestHeaders.Add(header.Key, header.Value);
                }
                using (HttpContent client = new StringContent(postData, Encoding.UTF8))
                {
                    if (contentType != null)
                        client.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(contentType);

                    HttpResponseMessage response = httpClient.PostAsync(url, client).Result;
                    return response.Content.ReadAsStringAsync().Result;
                }
            }
        }
    }



    /// <summary>
    /// 
    /// </summary>
    public class WePayConfig
    {
        //=======【商户系统后台机器IP】===================================== 
        /* 此参数可手动配置也可在程序中自动获取
        */
        public const string IP = "8.8.8.8";


        //=======【代理服务器设置】===================================
        /* 默认IP和端口号分别为0.0.0.0和0，此时不开启代理（如有需要才设置）
        */
        public const string PROXY_URL = "";

        //=======【上报信息配置】===================================
        /* 测速上报等级，0.关闭上报; 1.仅错误时上报; 2.全量上报
        */
        public const int REPORT_LEVENL = 1;

        //=======【日志级别】===================================
        /* 日志等级，0.不输出日志；1.只输出错误信息; 2.输出错误和正常信息; 3.输出错误信息、正常信息和调试信息
        */
        public const int LOG_LEVENL = 3;
    }
}