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

namespace NetLibrary.OnlineTrade
{
    public class LazadaApi
    {
        /// <summary>
        /// 接口版本
        /// </summary>
        public readonly string VERSION = "1.0";
        #region 读取订单
        public List<OrderModel> GetOrders(string country, string UserID, string apiKey, DateTime? SDate, out string ErrorMessage)
        {
            string Url = "";

            List<OrderModel> ListModel = new List<OrderModel>();

            #region 设置市场所在地借口地址
            switch (country)
            {
                case "印尼":
                    Url = "https://api.sellercenter.lazada.co.id";
                    break;
                case "马来":
                    Url = "https://api.sellercenter.lazada.com.my";
                    break;
                case "泰国":
                    Url = "https://api.sellercenter.lazada.co.th";
                    break;
                case "菲律宾":
                    Url = "https://api.sellercenter.lazada.com.ph";
                    break;
                case "新加坡":
                    Url = "https://api.sellercenter.lazada.sg";
                    break;
                case "越南":
                    Url = "https://api.sellercenter.lazada.vn";
                    break;

            }


            #endregion
            var timestamp = DateTime.Now.ToString("yyyy-MM-ddTHH:mm:ss+08:00");
            var stime = SDate.Value.ToString("yyyy-MM-ddTHH:mm:ss+08:00");
            var param = new Dictionary<string, string>();
            param.Add("Action", "GetOrders");
            param.Add("CreatedAfter", HttpUtility.UrlEncode(stime, Encoding.GetEncoding("UTF-8")).ToUpper());
            //param.Add("Status", "pending");
            param.Add("UserID", HttpUtility.UrlEncode(UserID, Encoding.GetEncoding("UTF-8")));
            param.Add("Timestamp", HttpUtility.UrlEncode(timestamp, Encoding.GetEncoding("UTF-8")).ToUpper());
            param.Add("Format", "XML");
            param.Add("Version", VERSION);

            var sign = CreateSignature(param, apiKey);
            param.Add("Signature", HttpUtility.UrlEncode(sign, Encoding.GetEncoding("UTF-8")));
            string surl = Url + "?";
            if (param != null)
            {
                foreach (var item in param)
                {
                    surl += item.Key + "=" + item.Value + "&";

                }
            }
            surl = surl.TrimEnd('&');

            string XmlContent = CustomIO.HttpRequest2(surl, "GET", "text/html", null, System.Net.HttpVersion.Version10, null, out ErrorMessage);
            if (string.IsNullOrEmpty(ErrorMessage) == false)
            {
                return null;
            }

            XElement xmlPage = XElement.Parse(XmlContent);

            try
            {
                foreach (var q in xmlPage.Element("Body").Element("Orders").Elements("Order"))
                {
                    string OrderNumber = q.Element("OrderNumber").Value;
                    if (q.Element("Statuses").Element("Status").Value != "pending") continue;
                    var param2 = new Dictionary<string, string>();
                    param2.Add("Action", "GetOrderItems");
                    param2.Add("OrderId", HttpUtility.UrlEncode(q.Element("OrderId").Value, Encoding.GetEncoding("UTF-8")).ToUpper());

                    param2.Add("UserID", HttpUtility.UrlEncode(UserID, Encoding.GetEncoding("UTF-8")));
                    param2.Add("Timestamp", HttpUtility.UrlEncode(timestamp, Encoding.GetEncoding("UTF-8")).ToUpper());
                    param2.Add("Format", "XML");
                    param2.Add("Version", VERSION);

                    var sign2 = CreateSignature(param2, apiKey);
                    param2.Add("Signature", HttpUtility.UrlEncode(sign, Encoding.GetEncoding("UTF-8")));
                    string surl2 = Url + "?";
                    if (param != null)
                    {
                        foreach (var item in param)
                        {
                            surl2 += item.Key + "=" + item.Value + "&";

                        }
                    }
                    surl2 = surl2.TrimEnd('&');

                    string result2 = CustomIO.HttpRequest2(surl2, "GET", "text/html", null, System.Net.HttpVersion.Version10, null, out ErrorMessage);
                    if (string.IsNullOrEmpty(ErrorMessage) == false)
                    {
                        return null;
                    }

                    XElement DetailXml = XElement.Parse(result2);
                    OrderModel om = new OrderModel();
                    om.OrderCode = OrderNumber;
                    om.PlatOrderCode = q.Element("OrderId").Value;
                    string customname = "";
                    if (q.Element("CustomerFirstName") != null)
                    {
                        customname = q.Element("CustomerFirstName").Value;
                    }
                    if (q.Element("CustomerLastName") != null)
                    {
                        if (q.Element("CustomerLastName").Value != "")
                            customname += " " + q.Element("CustomerLastName").Value;
                    }
                    if (customname == "")
                    {
                        ErrorMessage += OrderNumber + " 收件人姓名为空<br />";
                        continue;
                    }
                    om.BuyerName = customname;
                    //string price = q.Element("Price").Value;
                    //om.TotalPrice = Convert.ToDecimal(price);
                    if (q.Element("AddressShipping").Element("Phone") != null)
                    {
                        om.BuyerPhone = q.Element("AddressShipping").Element("Phone").Value;
                    }
                    if (q.Element("AddressShipping").Element("Phone2") != null)
                    {
                        om.BuyerMobile = q.Element("AddressShipping").Element("Phone2").Value;
                    }
                    string address = "";
                    if (q.Element("AddressShipping").Element("Address1") != null)
                    {
                        address = q.Element("AddressShipping").Element("Address1").Value + ",";
                    }
                    if (q.Element("AddressShipping").Element("Address2") != null)
                    {
                        if (q.Element("AddressShipping").Element("Address2").Value != "")
                            address += "" + q.Element("AddressShipping").Element("Address2").Value + ",";
                    }
                    if (q.Element("AddressShipping").Element("Address3") != null)
                    {
                        if (q.Element("AddressShipping").Element("Address3").Value != "")
                            address += "" + q.Element("AddressShipping").Element("Address3").Value + ",";
                    }
                    if (q.Element("AddressShipping").Element("Address4") != null)
                    {
                        if (q.Element("AddressShipping").Element("Address4").Value != "")
                            address += "" + q.Element("AddressShipping").Element("Address4").Value + ",";
                    }
                    if (q.Element("AddressShipping").Element("Address5") != null)
                    {
                        if (q.Element("AddressShipping").Element("Address5").Value != "")
                            address += "" + q.Element("AddressShipping").Element("Address5").Value + ",";
                    }
                    om.BuyerAddr = address;
                    string City = " ";
                    if (q.Element("AddressShipping").Element("City") != null)
                    {
                        if (q.Element("AddressShipping").Element("City").Value != "")
                            City = q.Element("AddressShipping").Element("City").Value;
                    }
                    om.BuyerCity = City;
                    string Region = " ";
                    if (q.Element("AddressShipping").Element("Region") != null)
                    {
                        if (q.Element("AddressShipping").Element("Region").Value != "")
                            Region = q.Element("AddressShipping").Element("Region").Value;
                    }
                    om.BuyerProvince = Region;
                    string PostCode = "";
                    if (q.Element("AddressShipping").Element("PostCode") != null)
                    {
                        PostCode = q.Element("AddressShipping").Element("PostCode").Value;
                    }
                    om.BuyerZip = PostCode;
                    string Country = " ";
                    if (q.Element("AddressShipping").Element("Country") != null)
                    {
                        Country = q.Element("AddressShipping").Element("Country").Value;
                    }
                    om.BuyerCountry = Country;
                    om.OrderDate = DateTime.Now;
                    om.PayDate = Convert.ToDateTime(q.Element("CreatedAt").Value);
                    string bz = "";
                    Decimal PaidPrice = 0;
                    List<OrderDetailModel> odmlist = new List<OrderDetailModel>();
                    foreach (var item in DetailXml.Element("Body").Element("Orders").Element("Order").Element("OrderItems").Elements("OrderItem"))
                    {
                        OrderDetailModel odm = new OrderDetailModel();
                        string sku = item.Element("Sku").Value;
                        string[] goodlist = sku.Split('-');
                        odm.GoodsSKU = sku;
                        odm.MoneyCode = item.Element("Currency").Value;
                        bz = item.Element("Currency").Value;
                        odm.GoodsPrice = Convert.ToDecimal(item.Element("ItemPrice").Value);
                        //PaidPrice += Convert.ToDecimal(item.Element("PaidPrice").Value);
                        PaidPrice += Convert.ToDecimal(item.Element("ItemPrice").Value);
                        odm.GoodsNum = 1;
                        odm.GoodsName = goodlist[0];
                        //odm.PostInfo = item.Element("OrderItemId").Value;
                        odmlist.Add(odm);
                        //om.ListModel.Add(odm);
                    }
                    om.ListModel = odmlist;
                    om.TotalPrice = PaidPrice;
                    om.MoneyCode = bz;
                    ListModel.Add(om);
                }
            }
            catch
            {
                ErrorMessage += "读取失败";
            }

            return ListModel;
        }
        #endregion
        /// <summary>
        /// 生成签名
        /// </summary>
        public string CreateSignature(Dictionary<string, string> dict, string apiKey)
        {
            var dictSort = dict.OrderBy(u => u.Key).Select(u => string.Format("{0}={1}", u.Key, u.Value));
            var str = string.Join("&", dictSort);
            return HmacSHA256(str, apiKey).ToLower();
        }
        /// <summary>
        /// HMACSHA256
        /// </summary>
        private string HmacSHA256(string data, string key)
        {
            var hmacsha256 = new HMACSHA256(Encoding.UTF8.GetBytes(key));
            byte[] _byte = hmacsha256.ComputeHash(System.Text.Encoding.ASCII.GetBytes(data));
            hmacsha256.Clear();
            System.Text.StringBuilder sb = new System.Text.StringBuilder();
            foreach (var item in _byte)
            {
                sb.Append(item.ToString("X").PadLeft(2, '0'));
            }

            return sb.ToString();
        }

        public string SHA256Encrypt(string password, string name)
        {
            string str = "";

            var hmacsha256 = new HMACSHA256(Encoding.UTF8.GetBytes(password));
            hmacsha256.ComputeHash(Encoding.UTF8.GetBytes(name));
            foreach (byte test in hmacsha256.Hash)
            {
                str += test.ToString("x2");
            }
            return str;

        }
    }
}