using System;
using System.Collections;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Security.Cryptography;
using WebService.SDK;
using System.Text;

namespace ThirdPartInterfaceService
{
    public class Common
    {
        //接口请求地址，固定不变，无需修改
        //protected const string req_url = "https://www.weiwoju.com";
        protected static string req_url = ConfigurationManager.AppSettings["req_url"] == null ?
            "https://apisvbak2.ke51.cn" : ConfigurationManager.AppSettings["req_url"].ToString();
        protected const string key = "w0j23q2m69po13syyd6pj6a11o64f2r13bj";
        protected const string openid = "1z7n0lp0nsi8o0dd5o74lgrhs1575k";

        public static string get_reqmsg(string trade_state)
        {
            switch (trade_state)
            {
                case "0":
                    return "等待付款";
                case "1":
                    return "已付款";
                case "2":
                    return "已撤单";
                case "3":
                    return "申请撤单";
                case "4":
                    return "部分退款";
                case "5":
                    return "已退款";
                case "6":
                    return "交易关闭";
                case "7":
                    return "系统保留状态（查询时使用，同时查询退款和撤单记录）";
                case "8":
                    return "退款中（平台未返回退款结果）";
                case "9":
                    return "退款失败";
                case "10":
                    return "待退款";
                case "11":
                    return "退款成功";
                case "12":
                    return "退款失败";
                case "13":
                    return "退款取消";
                case "14":
                    return "撤单成功";
                default:
                    return "";
            }
        }

        #region 授权码验签
        /// <summary>
        /// 验签
        /// </summary>
        /// <param name="timespan">秒</param>
        /// <param name="code">和配置文件中匹配</param>
        /// <returns></returns>
        public static bool Verify(string timespan, string code, string VerifyCode)
        {
            if (!long.TryParse(timespan, out var unixTimestamp) || VerifyCode != code)
            {
                return false;
            }

            var targetedTime = new DateTime(1970, 1, 1).AddSeconds(unixTimestamp);
            var oneHour = TimeSpan.FromHours(1);
            var currentTime = DateTime.Now;
            if (currentTime - oneHour <= targetedTime)
            {
                return false;
            }

            return true;
        }
        #endregion

        #region 商家扫用户支付二维码 -反扫
        /// <summary>
        /// 交易支付接口
        /// 商家扫用户支付二维码
        /// </summary>
        /// <param name="auth_code">用户付款授权码</param>
        /// <param name="out_trade_no">商户订单号</param>
        /// <param name="pay_subject">商品描述</param>
        /// <param name="total_fee">总金额</param>
        /// <param name="MerchantInfo">商户信息（商户号，秘钥）</param>
        /// <param name="notify_url">通知回调地址</param>
        /// <returns></returns>
        public static string merchantscan(string auth_code, string out_trade_no, string pay_subject, string total_fee,
            string[] MerchantInfo, string notify_url)
        {
            string ResString = "";
            if (string.IsNullOrEmpty(MerchantInfo[0]))
            {
                return null;
            }
            Dictionary<string, string> _Dictionary = new Dictionary<string, string>();
            _Dictionary.Add("auth_code", auth_code);//支付宝/微信授权码
            _Dictionary.Add("bind_code", MerchantInfo[0]);//商户编号
            _Dictionary.Add("body", total_fee);//交易金额
            _Dictionary.Add("no", out_trade_no);//门店编号
            _Dictionary.Add("nonce_str", "0"); //支付渠道
            _Dictionary.Add("openid", openid);//客无忧与平台对接的openid   jajonaujrocjajheangyunhaohpeng
            _Dictionary.Add("order_title", pay_subject);//设备编号
            _Dictionary.Add("price", total_fee);//支付描述信息
            _Dictionary.Add("time_stamp", Convert.ToInt32((DateTime.Now -
                new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).ToString());//币种。默认CNY
            _Dictionary.Add("sign", getSign(_Dictionary, key));
            LogHelper.WriteReceiveLog("支付反扫-传第三方参数：" + paramsToString(_Dictionary));
            //以上参数进行签名
            ResString = CommonHelper.HttpUrlPost(paramsToString(_Dictionary), req_url + "/Payapi/Index/microPay",
                "application/x-www-form-urlencoded", 5);
            LogHelper.WriteReceiveLog("支付反扫-返回参数：" + ResString);
            return ResString;
        }
        #endregion

        #region 用户扫线上二维码-正扫
        public static string QRCodePay(string out_trade_no, string pay_subject, string total_fee, string[] MerchantInfo,
            string notify_url, string channel_type)
        {
            string ResString = "";
            if (string.IsNullOrEmpty(MerchantInfo[0]))
            {
                return null;
            }
            Dictionary<string, string> _Dictionary = new Dictionary<string, string>();
            _Dictionary.Add("openid", openid);//客无忧与平台对接的openid   jajonaujrocjajheangyunhaohpeng
            _Dictionary.Add("bind_code", MerchantInfo[0]);//商户编号
            _Dictionary.Add("auth_code", out_trade_no);//支付宝/微信授权码
            _Dictionary.Add("channel_type", channel_type); //支付渠道
            _Dictionary.Add("fee_type", "CNY");//币种。默认CNY
            _Dictionary.Add("no", out_trade_no);//交易上行流水号
            _Dictionary.Add("order_title", pay_subject);//支付描述信息
            _Dictionary.Add("time_expire", "5");//超时时间
            _Dictionary.Add("body", total_fee);//交易金额
            _Dictionary.Add("price", total_fee);//交易金额
            _Dictionary.Add("trade_type", "QRCODE");//交易类型
            _Dictionary.Add("time_stamp", Convert.ToInt32((DateTime.Now -
                new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).ToString());//币种。默认CNY
            _Dictionary.Add("sign", getSign(_Dictionary, key));
            _Dictionary.Add("notify_url", "");
            _Dictionary.Add("callback_url", "");
            LogHelper.WriteReceiveLog("支付正扫_传第三方参数：" + paramsToString(_Dictionary));
            //以上参数进行签名
            ResString = CommonHelper.HttpUrlPost(paramsToString(_Dictionary), req_url + "/Payapi/Index/Webpay", "application/x-www-form-urlencoded", 5);
            LogHelper.WriteSendLog(" 支付正扫_返回的支付结果:" + ResString);
            return ResString;
        }

        public static string QRCodePay(string out_trade_no, string pay_subject,
            string total_fee, string MerchantInfo, string notify_url, string channel_type)
        {
            string ResString = "";
            if (string.IsNullOrEmpty(MerchantInfo))
            {
                return null;
            }
            Dictionary<string, string> _Dictionary = new Dictionary<string, string>();
            _Dictionary.Add("openid", "1z7n0lp0nsi8o0dd5o74lgrhs1575k");//客无忧与平台对接的openid  jajonaujrocjajheangyunhaohpeng
            _Dictionary.Add("bind_code", MerchantInfo);//商户编号
            _Dictionary.Add("auth_code", out_trade_no);//支付宝/微信授权码
            _Dictionary.Add("channel_type", channel_type); //支付渠道
            _Dictionary.Add("fee_type", "CNY");//币种。默认CNY
            _Dictionary.Add("no", out_trade_no);//交易上行流水号
            _Dictionary.Add("order_title", pay_subject);//支付描述信息
            _Dictionary.Add("time_expire", "5");//超时时间
            _Dictionary.Add("body", total_fee);//交易金额
            _Dictionary.Add("price", total_fee);//交易金额
            _Dictionary.Add("trade_type", "QRCODE");//交易类型
            _Dictionary.Add("time_stamp", Convert.ToInt32((DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).ToString());//币种。默认CNY
            _Dictionary.Add("notify_url", "https://www.weiwoju.com");
            _Dictionary.Add("callback_url", "https://www.weiwoju.com");
            _Dictionary.Add("sign", getSign(_Dictionary, key));
            LogHelper.WriteReceiveLog("支付正扫_传第三方参数：" + paramsToString(_Dictionary));
            //以上参数进行签名
            ResString = CommonHelper.HttpUrlPost(paramsToString(_Dictionary),
                req_url + "/Payapi/Index/Webpay", "application/x-www-form-urlencoded", 5);
            LogHelper.WriteSendLog("支付正扫_返回的支付结果:" + ResString);
            return ResString;
        }
        #endregion

        #region 订单查询
        //交易支付接口测试
        //商家扫用户支付二维码
        //传入参数
        //@out_trade_no:商户订单号
        //@trade_no:交易下行流水号
        //@MerchantInfo:商户信息（商户号，秘钥）
        public static string TradeQuery(string out_trade_no, string trade_no, string MerchantInfo)
        {
            string ResString = "";
            if (string.IsNullOrEmpty(MerchantInfo))
            {
                return null;
            }
            long timestamp = CommonHelper.ConvertDataTimeLong(DateTime.Now);
            Dictionary<string, string> _Dictionary = new Dictionary<string, string>();
            //_Dictionary.Add("busi_id", MerchantInfo);//商户编号
            _Dictionary.Add("bind_code", MerchantInfo);//商户编号
            _Dictionary.Add("openid", openid);// jajonaujrocjajheangyunhaohpeng
            _Dictionary.Add("time_stamp", Convert.ToInt32((DateTime.Now -
                new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).ToString());//币种。默认CNY
            if (!string.IsNullOrEmpty(trade_no))
            {
                _Dictionary.Add("transaction_id", trade_no);//交易上行流水号
            }
            if (!string.IsNullOrEmpty(out_trade_no))
            {
                _Dictionary.Add("out_no", out_trade_no);//交易下行流水号
            }
            _Dictionary.Add("sign", getSign(_Dictionary, key));

            LogHelper.WriteReceiveLog("支付查询记录…传第三方参数：" + paramsToString(_Dictionary));
            //以上参数进行签名
            ResString = CommonHelper.HttpUrlPost(paramsToString(_Dictionary), req_url + "/Payapi/Index/orderQuery");
            LogHelper.WriteSendLog("支付查询记录第三方…返回值：" + ResString);
            return ResString;
        }
        #endregion

        #region 订单退款-正扫
        //交易支付接口测试
        //商家扫用户支付二维码
        //传入参数
        //@operator_id:操作员编号
        //@terminal_id:平台订单号
        //@refund_fee:退款金额
        //@refund_subject:退款描述
        //@out_trade_no:交易上行流水号
        //@trade_no:交易下行流水号
        //@out_refund_no:退款流水号
        //@MerchantInfo:商户信息（商户号，秘钥）
        public static string TradeRefund(string operator_id, string terminal_id, string refund_fee, string refund_subject,
            string out_trade_no, string trade_no, string out_refund_no, string MerchantInfo)
        {
            string ResString = "";
            if (string.IsNullOrEmpty(MerchantInfo))
            {
                return null;
            }
            long timestamp = CommonHelper.ConvertDataTimeLong(DateTime.Now);
            Dictionary<string, string> _Dictionary = new Dictionary<string, string>();
            _Dictionary.Add("bind_code", MerchantInfo);//商户编号
            _Dictionary.Add("openid", openid);//客无忧与平台对接的openid    jajonaujrocjajheangyunhaohpeng
            _Dictionary.Add("channel_type", "0"); //支付渠道
            _Dictionary.Add("fee_type", "CNY");//币种。默认CNY
            _Dictionary.Add("operator_id", operator_id);//操作员编号
            _Dictionary.Add("transaction_id", trade_no);//退款流水号
            _Dictionary.Add("nonce_str", "0"); //支付渠道
            _Dictionary.Add("time_stamp", Convert.ToInt32((DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).ToString());//币种。默认CNY
            if (!string.IsNullOrEmpty(out_trade_no))
            {
                _Dictionary.Add("out_trade_no", out_trade_no);//交易上行流水号
            }
            _Dictionary.Add("price", refund_fee);//退款金额
            _Dictionary.Add("refund_price", refund_fee);//退款金额
            _Dictionary.Add("refund_subject", refund_subject);//退款描述
            _Dictionary.Add("terminal_id", terminal_id);//设备编号
            if (!string.IsNullOrEmpty(out_refund_no))
            {
                _Dictionary.Add("refund_no", out_refund_no);//交易下行流水号
            }

            _Dictionary.Add("sign", getSign(_Dictionary, key));
            LogHelper.WriteReceiveLog("退款-请求参数：" + paramsToString(_Dictionary));
            //以上参数进行签名
            ResString = CommonHelper.HttpUrlPost(paramsToString(_Dictionary), req_url + "/Payapi/Index/refundPrice");
            LogHelper.WriteSendLog("退款-返回参数：" + ResString);
            return ResString;
        }
        #endregion

        #region 退款查询
        //交易支付接口测试
        //商家扫用户支付二维码
        //传入参数
        //@operator_id:操作员编号
        //@terminal_id:设备编号
        //@out_refund_no:商户退款单号
        //@MerchantInfo:商户信息（商户号，秘钥）
        public static string RefundQuery(string operator_id, string terminal_id, string out_refund_no, string MerchantInfo)
        {
            string ResString = "";
            if (string.IsNullOrEmpty(MerchantInfo))
            {
                return null;
            }
            Dictionary<string, string> _ApiDictionary = new Dictionary<string, string>
            {
                { "bind_code", MerchantInfo },//商户编号
                { "openid", openid },//客无忧平台OPENID
                { "nonce_str", "0" }, //随机字符串
                { "time_stamp", Convert.ToInt32((DateTime.Now - TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1))).TotalSeconds).ToString() }//时间戳
            };
            if (!string.IsNullOrEmpty(out_refund_no))
            {
                _ApiDictionary.Add("out_refund_no", out_refund_no);//商户订单号
            }
            _ApiDictionary.Add("sign", getSign(_ApiDictionary, key));
            //拼接交易请求参数
            string str_PostData = paramsToString(_ApiDictionary);
            LogHelper.WriteReceiveLog("退款查询-请求参数：" + str_PostData);
            //调用服务商接口进行退款查询
            ResString = CommonHelper.HttpUrlPost(str_PostData, req_url + "/Payapi/Index/refundOrderQuery");
            LogHelper.WriteSendLog("退款查询-返回参数：" + ResString);
            return ResString;
        }
        #endregion

        #region 获取签名 
        /// <summary>
        /// 获取签名
        /// </summary>
        /// <param name="dic"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        private static string getSign(Dictionary<string, string> dic, string key)
        {
            var list = dic.OrderBy(s => s.Key);
            string str = "";
            foreach (var ss in list)
            {
                str += ss.Key + "=" + ss.Value + "&";
            }
            str += "key=" + key;
            str = get_md5(str).ToUpper();
            return str;
        }

        private static string get_md5(string str)
        {
            var md5 = MD5.Create();
            var result_byte = md5.ComputeHash(Encoding.UTF8.GetBytes(str));
            return BitConverter.ToString(result_byte).Replace("-", "").ToLower();
        }

        private static string paramsToString(Dictionary<string, string> dic)
        {
            string str = String.Empty;
            foreach (var e in dic)
            {
                str += e.Key + "=" + e.Value + "&";
            }
            str = str.TrimEnd('&');
            return str;
        }
        #endregion
    }
}