using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using WebService.SDK.PayCommon;

namespace WebService.SDK.KwyPay
{
    public class KwyPayAPI
    {
        /// <summary>
        /// 扫码支付接口
        /// </summary>
        /// <param name="payConfig">接口配置</param>
        /// <param name="merchantInfo">平台商户信息</param>
        /// <param name="authCode">用户付款授权码</param>
        /// <param name="merchantOrderCode">商户交易订单号</param>
        /// <param name="payAmount">交易金额（元）</param>
        /// <returns></returns>
        public static Model.QueryResultModel MicroPay(KwyPayConfig payConfig,
            MobilePayConfig.PayMerchant merchantInfo, string authCode,
             string merchantOrderCode, string payAmount)
        {
            if (payConfig == null)
            {
                return default(Model.QueryResultModel);
            }
            if (!decimal.TryParse(payAmount, out decimal _PayAmount) || _PayAmount <= 0)
            {
                return default(Model.QueryResultModel);
            }
            Dictionary<string, string> _ApiDictionary = new Dictionary<string, string>
            {
                { "auth_code", authCode },//支付宝/微信授权码
                { "bind_code", merchantInfo.MerchantCode },//商户编号
                { "body", payAmount },//备注信息
                { "no", merchantOrderCode },//商户交易订单号
                { "nonce_str", "0" }, //随机字符串
                { "openid", payConfig.PlatformAPPID },//客无忧平台对接的OPENID
                { "order_title", "服务区商品" },//订单标题
                { "price", payAmount },//订单金额
                {
                    "time_stamp",Convert.ToInt32((DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).ToString()
                }//时间戳
            };
            _ApiDictionary.Add("sign", ApiParamSign(_ApiDictionary, payConfig.PlatformKey));
            LogHelper.WriteReceiveLog("支付反扫-传第三方参数：" +
                _ApiDictionary.Select(pair => pair.Key + "=" + pair.Value.ToString()).
                DefaultIfEmpty("").Aggregate((a, b) => a + "&" + b));
            return JsonConvert.DeserializeObject<Model.QueryResultModel>(CommonHelper.HttpUrlPost(
                 _ApiDictionary.Select(pair => pair.Key + "=" + pair.Value.ToString()).
                 DefaultIfEmpty("").Aggregate((a, b) => a + "&" + b), payConfig.MicroPayURL,
                 "application/x-www-form-urlencoded", payConfig.PlatformTimeout));
        }
        /// <summary>
        /// 二维码支付接口
        /// </summary>
        /// <param name="payConfig">接口配置</param>
        /// <param name="merchantInfo">平台商户信息</param>
        /// <param name="authCode">用户付款授权码</param>
        /// <param name="merchantOrderCode">商户交易订单号</param>
        /// <param name="payAmount">交易金额（元）</param>
        /// <param name="channelType">支付渠道</param>
        /// <returns></returns>
        public static Model.WebPayResultModel WebPay(KwyPayConfig payConfig,
            MobilePayConfig.PayMerchant merchantInfo, string merchantOrderCode, string payAmount )
        {
            if (payConfig == null)
            {
                return default(Model.WebPayResultModel);
            }
            if (!decimal.TryParse(payAmount, out decimal _PayAmount) || _PayAmount <= 0)
            {
                return default(Model.WebPayResultModel);
            }
            Dictionary<string, string> _ApiDictionary = new Dictionary<string, string>
            {
                { "openid", payConfig.PlatformAPPID },//客无忧平台对接的openid 
                { "bind_code", merchantInfo.MerchantCode },//商户编号
                { "no", merchantOrderCode },//交易上行流水号
                { "order_title", "服务区商品" },//支付描述信息
                { "nonce_str", "0" }, //随机字符串
                { "body", payAmount },//备注
                { "price", payAmount },//交易金额
                { "time_stamp", Convert.ToInt32((DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).ToString() },//时间戳
                { "notify_url", "https://www.weiwoju.com" },
                { "callback_url", "https://www.weiwoju.com" }
            };
            _ApiDictionary.Add("sign", ApiParamSign(_ApiDictionary, payConfig.PlatformKey));
            LogHelper.WriteReceiveLog("支付正扫-传第三方参数：" +
                _ApiDictionary.Select(pair => pair.Key + "=" + pair.Value.ToString()).
                DefaultIfEmpty("").Aggregate((a, b) => a + "&" + b));
            return JsonConvert.DeserializeObject<Model.WebPayResultModel>(CommonHelper.HttpUrlPost(
                 _ApiDictionary.Select(pair => pair.Key + "=" + pair.Value.ToString()).
                 DefaultIfEmpty("").Aggregate((a, b) => a + "&" + b), payConfig.WebPayURL,
                 "application/x-www-form-urlencoded", payConfig.PlatformTimeout));
        }

        /// <summary>
        /// 支付查询接口
        /// </summary>
        /// <param name="payConfig">接口配置</param>
        /// <param name="merchantInfo">平台商户信息</param>
        /// <param name="merchantOrderCode">商户订单号
        /// 注：与平台订单号必填一项</param>
        /// <param name="platformOrderCode">平台订单号
        /// 注：与商户订单号必填一项</param>
        /// <param name="payAmount">交易金额（元）</param>
        /// <returns></returns>
        public static Model.QueryResultModel OrderQuery(KwyPayConfig payConfig,
            MobilePayConfig.PayMerchant merchantInfo, string merchantOrderCode,
            string platformOrderCode, string payAmount)
        {
            if (payConfig == null)
            {
                return default(Model.QueryResultModel);
            }
            if (merchantInfo == null || string.IsNullOrWhiteSpace(merchantInfo.MerchantCode))
            {
                return default(Model.QueryResultModel);
            }
            Dictionary<string, string> _ApiDictionary = new Dictionary<string, string>
            {
                { "bind_code", merchantInfo.MerchantCode },//商户编号
                { "openid", payConfig.PlatformAPPID },//客无忧平台OPENID
                { "nonce_str", "0" }, //随机字符串
                { "time_stamp", Convert.ToInt32((DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).ToString() }//时间戳
            };
            if (!string.IsNullOrEmpty(platformOrderCode))
            {
                _ApiDictionary.Add("transaction_id", platformOrderCode);//平台订单号
            }
            if (!string.IsNullOrEmpty(merchantOrderCode))
            {
                _ApiDictionary.Add("out_no", merchantOrderCode);//商户订单号
            }
            _ApiDictionary.Add("sign", ApiParamSign(_ApiDictionary, payConfig.PlatformKey));
            LogHelper.WriteReceiveLog("支付查询-传第三方参数：" +
                _ApiDictionary.Select(pair => pair.Key + "=" + pair.Value.ToString()).
                DefaultIfEmpty("").Aggregate((a, b) => a + "&" + b));
            return JsonConvert.DeserializeObject<Model.QueryResultModel>(CommonHelper.HttpUrlPost(
                 _ApiDictionary.Select(pair => pair.Key + "=" + pair.Value.ToString()).
                 DefaultIfEmpty("").Aggregate((a, b) => a + "&" + b), payConfig.OrderQueryURL,
                 "application/x-www-form-urlencoded", payConfig.PlatformTimeout));
        }
        /// <summary>
        /// 退款接口
        /// </summary>
        /// <param name="payConfig">接口配置</param>
        /// <param name="merchantInfo">平台商户信息</param>
        /// <param name="platformOrderCode">平台订单号(原流水号)
        /// 注：与商户订单号必填一项</param>
        /// <param name="merchantOrderCode">商户订单号(原流水号)
        /// 注：与平台订单号必填一项</param>
        /// <param name="refundOrderCode">退款订单号</param>
        /// <param name="payAmount">退款金额（元）</param>
        /// <returns></returns>
        public static Model.QueryResultModel RefundPrice(KwyPayConfig payConfig,
            MobilePayConfig.PayMerchant merchantInfo, string platformOrderCode,
            string merchantOrderCode, string refundOrderCode, string payAmount)
        {
            if (payConfig == null)
            {
                return default(Model.QueryResultModel);
            }
            if (merchantInfo == null || string.IsNullOrWhiteSpace(merchantInfo.MerchantCode))
            {
                return default(Model.QueryResultModel);
            }
            Dictionary<string, string> _ApiDictionary = new Dictionary<string, string>
            {
                { "bind_code", merchantInfo.MerchantCode },//商户编号
                { "openid", payConfig.PlatformAPPID },//客无忧与平台对接的openid
                { "nonce_str", "0" }, //随机字符串
                { "time_stamp", Convert.ToInt32((DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds).ToString() },//时间戳
                { "price", payAmount },//原订单金额
                { "refund_no", refundOrderCode },//退款订单号
                { "refund_price", payAmount }//退款金额
            };
            if (!string.IsNullOrWhiteSpace(platformOrderCode))
            {
                _ApiDictionary.Add("transaction_id", platformOrderCode);//平台订单号
            }
            if (!string.IsNullOrWhiteSpace(merchantOrderCode))
            {
                _ApiDictionary.Add("out_no", merchantOrderCode);//商户订单号
            }
            _ApiDictionary.Add("sign", ApiParamSign(_ApiDictionary, payConfig.PlatformKey));
            LogHelper.WriteReceiveLog("支付退款-传第三方参数：" +
                _ApiDictionary.Select(pair => pair.Key + "=" + pair.Value.ToString()).
                DefaultIfEmpty("").Aggregate((a, b) => a + "&" + b));
            return JsonConvert.DeserializeObject<Model.QueryResultModel>(CommonHelper.HttpUrlPost(
                 _ApiDictionary.Select(pair => pair.Key + "=" + pair.Value.ToString()).
                 DefaultIfEmpty("").Aggregate((a, b) => a + "&" + b), payConfig.RefundPrice,
                 "application/x-www-form-urlencoded", payConfig.PlatformTimeout));
        }
        /// <summary>
        /// 客无忧支付平台参数签名
        /// </summary>
        /// <param name="signParm">待签名参数集</param>
        /// <param name="MD5Key">签名密钥</param>
        /// <returns></returns>
        public static string ApiParamSign(Dictionary<string, string> signParm, string MD5Key)
        {
            string _strSign = "";
            foreach (var keyValuePair in signParm.OrderBy(p => p.Key))
            {
                _strSign += (string.IsNullOrWhiteSpace(_strSign) ? "" : "&") + keyValuePair.Key + "=" + keyValuePair.Value;
            }
            return BitConverter.ToString(MD5.Create().ComputeHash(
                Encoding.UTF8.GetBytes(_strSign + "&key=" + MD5Key))).Replace("-", "").ToUpper();
        }
    }
}