using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;

namespace WebService.SDK.PayCommon
{
    public class KWYPayHelper
    {

        #region 方法 -> 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,
            MobilePayConfig.PayMerchant merchantInfo, string notify_url)
        {
            string ResString = "";
            if (merchantInfo == null || merchantInfo.MerchantCode == null || merchantInfo.MerchantKey == null)
            {
                return null;
            }

            Dictionary<string, string> _ApiDictionary = new Dictionary<string, string>
            {
                { "auth_code", auth_code },//支付宝/微信授权码
                { "bind_code", merchantInfo.MerchantCode },//平台商户号
                { "body", total_fee },//交易金额
                { "no", out_trade_no },//商户订单号
                { "nonce_str", "0" }, //支付渠道
                { "openid", MobilePayConfig.KWYPay.ApiOpenID },//客无忧与平台对接的openid  
                { "order_title", pay_subject },//商品信息
                { "price", total_fee },//支付金额
                { "time_stamp", Convert.ToInt32((DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).ToString() }//时间戳
            };
            _ApiDictionary.Add("sign", GetSign(_ApiDictionary));
            LogHelper.WriteReceiveLog("支付反扫-传第三方参数：" + ApiParamToString(_ApiDictionary));
            //以上参数进行签名
            ResString = CommonHelper.HttpUrlPost(ApiParamToString(_ApiDictionary),
                MobilePayConfig.KWYPay.BASE_URL + "/microPay", "application/x-www-form-urlencoded", 5);
            LogHelper.WriteReceiveLog("支付反扫-返回参数：" + ResString);
            return ResString;
        }
        #endregion

        #region 方法 -> 用户扫线上二维码-正扫
        /// <summary>
        /// 用户扫线上二维码-正扫
        /// </summary>
        /// <param name="out_trade_no"></param>
        /// <param name="pay_subject"></param>
        /// <param name="total_fee"></param>
        /// <param name="merchantInfo"></param>
        /// <param name="notify_url"></param>
        /// <param name="channel_type"></param>
        /// <returns></returns>
        public static string QRCodePay(string out_trade_no, string pay_subject, string total_fee,
            MobilePayConfig.PayMerchant merchantInfo, string notify_url, string channel_type)
        {
            string ResString = "";
            if (merchantInfo == null || merchantInfo.MerchantCode == null || merchantInfo.MerchantKey == null)
            {
                return null;
            }
            Dictionary<string, string> _ApiDictionary = new Dictionary<string, string>
            {
                { "openid", MobilePayConfig.KWYPay.ApiOpenID },//客无忧与平台对接的openid 
                { "bind_code", merchantInfo.MerchantCode },//商户编号
                { "auth_code", out_trade_no },//支付宝/微信授权码
                { "channel_type", channel_type }, //支付渠道
                { "fee_type", "CNY" },//币种。默认CNY
                { "no", out_trade_no },//交易上行流水号
                { "order_title", pay_subject },//支付描述信息
                { "time_expire", "5" },//超时时间
                { "body", total_fee },//交易金额
                { "price", total_fee },//交易金额
                { "trade_type", "QRCODE" },//交易类型
                { "time_stamp", Convert.ToInt32((DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).ToString() },//币种。默认CNY
                { "notify_url", "https://www.weiwoju.com" },
                { "callback_url", "https://www.weiwoju.com" }
            };
            _ApiDictionary.Add("sign", GetSign(_ApiDictionary));
            LogHelper.WriteReceiveLog("支付正扫_传第三方参数：" + ApiParamToString(_ApiDictionary));
            //以上参数进行签名
            ResString = CommonHelper.HttpUrlPost(ApiParamToString(_ApiDictionary),
                MobilePayConfig.KWYPay.BASE_URL + "/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 方法 -> 订单查询
        /// <summary>
        /// 客无忧订单查询
        /// </summary>
        /// <param name="out_trade_no">平台订单号</param>
        /// <param name="trade_no">商户订单号</param>
        /// <param name="merchantInfo">平台商户号</param>
        /// <returns></returns>
        public static string TradeQuery(string out_trade_no, string trade_no, MobilePayConfig.PayMerchant merchantInfo)
        {
            string ResString = "";
            if (merchantInfo == null || merchantInfo.MerchantCode == null || merchantInfo.MerchantKey == null)
            {
                return null;
            }
            Dictionary<string, string> _ApiDictionary = new Dictionary<string, string>
            {
                { "bind_code", merchantInfo.MerchantCode },//商户编号
                { "openid", MobilePayConfig.KWYPay.ApiOpenID },// 客无忧平台openid
                { "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))
            {
                _ApiDictionary.Add("transaction_id", trade_no);//交易上行流水号
            }
            if (!string.IsNullOrEmpty(out_trade_no))
            {
                _ApiDictionary.Add("out_no", out_trade_no);//交易下行流水号
            }
            _ApiDictionary.Add("sign", GetSign(_ApiDictionary));

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

        #region 方法 -> 订单退款-正扫
        /// <summary>
        /// 客无忧订单退款
        /// </summary>
        /// <param name="operator_id">操作员编号</param>
        /// <param name="terminal_id">平台订单号</param>
        /// <param name="refund_fee">退款金额</param>
        /// <param name="refund_subject">退款描述</param>
        /// <param name="out_trade_no">交易上行流水号</param>
        /// <param name="trade_no">交易下行流水号</param>
        /// <param name="out_refund_no">退款流水号</param>
        /// <param name="merchantInfo">商户信息（商户号，秘钥）</param>
        /// <returns></returns>
        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, MobilePayConfig.PayMerchant merchantInfo)
        {
            string ResString = "";
            if (merchantInfo == null || merchantInfo.MerchantCode == null || merchantInfo.MerchantKey == null)
            {
                return null;
            }
            long timestamp = CommonHelper.ConvertDataTimeLong(DateTime.Now);
            Dictionary<string, string> _ApiDictionary = new Dictionary<string, string>
            {
                { "bind_code", merchantInfo.MerchantCode },//商户编号
                { "openid", MobilePayConfig.KWYPay.ApiOpenID },//客无忧与平台对接的openid 
                { "channel_type", "0" }, //支付渠道
                { "fee_type", "CNY" },//币种。默认CNY
                { "operator_id", operator_id },//操作员编号
                { "transaction_id", trade_no },//退款流水号
                { "nonce_str", "0" }, //支付渠道
                { "price", refund_fee },//退款金额
                { "refund_price", refund_fee },//退款金额
                { "refund_subject", refund_subject },//退款描述
                { "terminal_id", terminal_id },//设备编号
                { "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))
            {
                _ApiDictionary.Add("out_trade_no", out_trade_no);//交易上行流水号
            }
            if (!string.IsNullOrEmpty(out_refund_no))
            {
                _ApiDictionary.Add("refund_no", out_refund_no);//交易下行流水号
            }

            _ApiDictionary.Add("sign", GetSign(_ApiDictionary));
            LogHelper.WriteReceiveLog("退款-请求参数：" + ApiParamToString(_ApiDictionary));
            //以上参数进行签名
            ResString = CommonHelper.HttpUrlPost(ApiParamToString(_ApiDictionary), MobilePayConfig.KWYPay.BASE_URL + "/refundPrice");
            LogHelper.WriteSendLog("退款-返回参数：" + ResString);
            return ResString;
        }
        #endregion

        #region 方法 -> 客无忧参数MD5校验
        /// <summary>
        /// 客无忧MD5签名
        /// </summary>
        /// <param name="ApiParam"></param>
        /// <returns></returns>
        private static string GetSign(Dictionary<string, string> ApiParam)
        {
            string _strSign = "";
            foreach (var keyValuePair in ApiParam.OrderBy(p => p.Key))
            {
                _strSign += (string.IsNullOrWhiteSpace(_strSign) ? "" : "&") + keyValuePair.Key + "=" + keyValuePair.Value;
            }
            return BitConverter.ToString(MD5.Create().ComputeHash(
                Encoding.UTF8.GetBytes(_strSign + "&key=" + MobilePayConfig.KWYPay.ApiKey))).Replace("-", "").ToLower();
        }

        /// <summary>
        /// 客无忧参数
        /// </summary>
        /// <param name="ApiParam"></param>
        /// <returns></returns>
        private static string ApiParamToString(Dictionary<string, string> ApiParam)
        {
            string _strSign = "";
            foreach (var keyValuePair in ApiParam)
            {
                _strSign += (string.IsNullOrWhiteSpace(_strSign) ? "" : "&") + keyValuePair.Key + "=" + keyValuePair.Value;
            }
            return _strSign;
        }
        #endregion

    }
}