using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.Helpers;
using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;

namespace Web12306
{
	public class TrainSuggestion : IHttpHandler
	{
		#region Implementation of IHttpHandler

		/// <summary>
		/// 通过实现 <see cref="T:System.Web.IHttpHandler"/> 接口的自定义 HttpHandler 启用 HTTP Web 请求的处理。
		/// </summary>
		/// <param name="context"><see cref="T:System.Web.HttpContext"/> 对象，它提供对用于为 HTTP 请求提供服务的内部服务器对象（如 Request、Response、Session 和 Server）的引用。</param>
		public void ProcessRequest(HttpContext context)
		{
			var request = context.Request;
			if (request.UrlReferrer == null || !Regex.IsMatch(request.UrlReferrer.Host, @"^.*?\.(fishlee\.net|liebao\.cn)$"))
				return;

			//check code
			var r = request.QueryString["r"];
			if (string.IsNullOrEmpty(r))
				return;

			var data = request.Form["data"];
			if (string.IsNullOrEmpty(data))
				return;

			var crc = GetTextCrc(data);
			if (!r.EndsWith(crc + ""))
				return;

			var origin = request.Headers["Origin"];
			var callback = request.QueryString["calllback"];
			if (!string.IsNullOrEmpty(origin))
			{
				if (Regex.IsMatch(origin, @"^(https?://.*?\.(fishlee\.net|liebao\.cn)|chrome-extension://.*)$"))
					context.Response.AddHeader("Access-Control-Allow-Origin", origin);
				else
				{
					//非法提交
					return;
				}
			}
			else
			{
				return;
			}
			context.Response.ContentType = string.IsNullOrEmpty(callback) ? "application/json" : "application/javascript";
			context.Response.BufferOutput = false;

			try
			{
				var ri = JsonConvert.DeserializeObject<RequestInfo>(data);
				var suggestion = GetSuggestionResponseContent(ri);

				if (!string.IsNullOrEmpty(callback))
				{
					context.Response.Write(callback + "(");
				}
				context.Response.Write(suggestion);
				if (!string.IsNullOrEmpty(callback))
				{
					context.Response.Write(callback + ");");
				}
			}
			catch (Exception ex)
			{
				return;
			}
		}

		int GetTextCrc(string txt)
		{
			var crc = 0;
			for (var i = 0; i < txt.Length - 1; i += 2)
			{
				crc += txt[i] ^ txt[i + 1];
				if (crc > 48360)
					crc -= 36048;
			}
			if (txt.Length % 2 == 1)
				crc += txt[txt.Length - 1];
			if (crc > 48360)
				crc -= 36048;
			crc = crc ^ 5299;

			return crc;
		}

		/// <summary>
		/// 获取一个值，该值指示其他请求是否可以使用 <see cref="T:System.Web.IHttpHandler"/> 实例。
		/// </summary>
		/// <returns>
		/// 如果 <see cref="T:System.Web.IHttpHandler"/> 实例可再次使用，则为 true；否则为 false。
		/// </returns>
		public bool IsReusable { get { return true; } }

		#endregion

		#region 生成建议

		static JsonSerializerSettings _camelJsonSetting = new JsonSerializerSettings
		{
			ContractResolver = new CamelCasePropertyNamesContractResolver()
		};

		string GetSuggestionResponseContent(RequestInfo ri)
		{
			if (ri.CheckIllegal())
				return string.Empty;

			return JsonConvert.SerializeObject(GetSuggestionResponseContentCore(ri), Formatting.None, _camelJsonSetting);
		}

		SuggestionResponse GetSuggestionResponseContentCore(RequestInfo ri)
		{
			//预处理
			PreProcessRequestData(ri);

			//获得所有的可替换站点
			var alllines = ri.Stops.Values.SelectMany(s => GetAlternativeLines(s, ri.Date)).ToArray();

			//对线路进行分组排序
			var lineGrouped = alllines.GroupBy(s => s.LineName).Select(s =>
			{
				var list = s.ToList();
				var f = list[0];
				return new AlternativeLineGroup(f.From.Name, f.To.Name, f.Date, list, f.IsCrossDate);
			}).ToList();

			//过滤
			FilteAlternativeLine(ri, lineGrouped);

			//填充数据
			FillExtraInfo(ri, lineGrouped);

			//排序
			SortLineRecommand(ri, lineGrouped);

			return new SuggestionResponse()
					{
						Key = "盗用可耻，鄙视无耻的各个国产IT同行！",
						Accepted = true,
						Groups = lineGrouped
					};
		}

		void PreProcessRequestData(RequestInfo ri)
		{
			ri.PreprocessData();
		}

		void FilteAlternativeLine(RequestInfo ri, List<AlternativeLineGroup> line)
		{
			for (var i = line.Count - 1; i >= 0; i--)
			{
				var train = ri.Stops[line[i].Lines[0].TrainCode];

				var maxAllowElapsedTime = train.TrainInfo.elapsedTime.Value.Add(train.TrainInfo.elapsedTime.MaxAddTime);
				for (var j = line[i].Lines.Count - 1; j >= 0; j--)
				{
					var current = line[i].Lines[j];
					//如果同时是发站和到站，则删除不推荐
					if (current.From.IsOriginal && current.To.IsOriginal)
						line[i].Lines.RemoveAt(j);
					//如果时间会超过原来最大的允许值，则排除
					else if (current.ElapsedTime > maxAllowElapsedTime)
						line[i].Lines.RemoveAt(j);
				}
				if (line[i].Lines.Count == 0)
				{
					line.RemoveAt(i);
				}
			}
		}

		/// <summary>
		/// 根据停靠站获得权重
		/// </summary>
		/// <param name="lineList"></param>
		/// <returns></returns>
		int GetLineStationEndpointWeight(List<AlternativeLine> lineList)
		{
			var point = 0;
			foreach (var line in lineList)
			{
				if (line.From.IsEndPoint && line.To.IsEndPoint)
					point += 2;
				else if (line.From.IsEndPoint || line.To.IsEndPoint)
					point += 1;
			}
			return point;
		}

		void SortLineRecommand(RequestInfo ri, List<AlternativeLineGroup> line)
		{
			line.Sort((x, y) =>
			{
				var ceo1 = GetLineStationEndpointWeight(x.Lines);
				var ceo2 = GetLineStationEndpointWeight(y.Lines);
				if (ceo1 != ceo2)
					return ceo2 - ceo1;

				if (x.Lines.Count != y.Lines.Count)
					return y.Lines.Count - x.Lines.Count;

				//再看停靠时间
				var ep1 = (int)x.Lines.Min(s => s.From.StopTime + s.To.StopTime).TotalSeconds;
				var ep2 = (int)y.Lines.Min(s => s.From.StopTime + s.To.StopTime).TotalSeconds;
				if (ep1 != ep2)
					return ep2 - ep1;

				//再看价格
				var ap1 = (int)x.Lines.Min(s => s.ExtraPrice);
				var ap2 = (int)y.Lines.Min(s => s.ExtraPrice);
				if (ap1 != ap2)
					return ap1 - ap2;

				return 0;
			});

			//再对组内排序
			foreach (var current in line)
			{
				current.Lines.Sort((x, y) =>
				{
					//再看停靠时间
					var ep1 = (int)(x.From.StopTime + x.To.StopTime).TotalSeconds;
					var ep2 = (int)(y.From.StopTime + y.To.StopTime).TotalSeconds;
					if (ep1 != ep2)
						return ep2 - ep1;

					//再看价格
					var ap1 = (int)x.ExtraPrice;
					var ap2 = (int)y.ExtraPrice;
					if (ap1 != ap2)
						return ap1 - ap2;

					return 0;
				});
			}
		}

		void FillExtraInfo(RequestInfo ri, List<AlternativeLineGroup> line)
		{
			for (var i = line.Count - 1; i >= 0; i--)
			{
				var train = ri.Stops[line[i].Lines[0].TrainCode];

				var originalTime = train.TrainInfo.elapsedTime.Value;
				for (var j = line[i].Lines.Count - 1; j >= 0; j--)
				{
					var current = line[i].Lines[j];
					//如果时间会超过原来最大的允许值，则排除
					var priceExtraRadio = ((current.ElapsedTime - originalTime).TotalSeconds / (1.0 * originalTime.TotalSeconds));
					current.BasePriceSeat = Cn12306SuggestionUtility.BaseSeatCodes.First(s => train.TrainInfo.ticketMap.ContainsKey(s));
					current.BasePrice = train.TrainInfo.ticketMap[current.BasePriceSeat].price / 10.0;
					current.ExtraPrice = Math.Round(priceExtraRadio * current.BasePrice, 2);
					current.Radio = (int)(priceExtraRadio * 100);
				}
			}
		}


		List<AlternativeLine> GetAlternativeLines(TrainInfoItem train, DateTime requestDate)
		{
			var info = train.TrainInfo;
			var stops = train.StopInfos;

			var indexFrom = Array.FindIndex(stops, s => s.station_name == info.from.name);
			var indexTo = Array.FindIndex(stops, indexFrom + 1, s => s.station_name == info.to.name);

			if (indexFrom == -1 || indexTo == -1)
				return null;

			var altFrom = new List<AlternativeStation>();
			var altTo = new List<AlternativeStation>();
			var maxAddTime = train.TrainInfo.elapsedTime.MaxAddTime;

			if (indexFrom != 0)
			{
				var stopTimeFrom = stops[indexFrom].StopTime;
				var arriveTime = stops[indexFrom].ArriveTime;
				for (var i = 0; i < indexFrom; i++)
				{
					//如果isEnabled为true，则说明会停靠这个站点。不能推荐更短的。
					//如果时间过久，则不做推荐
					if (stops[i].isEnabled || stops[i].StartTime - arriveTime > maxAddTime)
						continue;

					var stopTime = i == 0 ? TimeSpan.Zero : stops[i].StopTime;
					if (i != 0)
					{
						//对于非始发站，停靠时间相同或更短，则不做推荐。
						if (stopTime <= stopTimeFrom)
							continue;
					}

					//添加到推荐列表中
					altFrom.Add(new AlternativeStation()
								{
									ArriveTime = stops[i].StartTime,
									IsEndPoint = i == 0,
									IsFromStation = true,
									Name = stops[i].station_name,
									StopTime = stopTime,
									TrainCode = info.code,
									Date = stops[i].StartTime,
									IsCrossDate = requestDate != stops[i].StartTime.Date
								});
				}

				//排序
				altFrom.Sort(new AlternativeStationComparer());
				if (altFrom.Count > 3)
					altFrom.RemoveRange(altFrom.Count - 3, 3);
			}
			if (indexTo != stops.Length - 1)
			{
				var stopTimeTo = stops[indexTo].StopTime;
				var startTime = stops[indexTo].StartTime;

				for (var i = stops.Length - 1; i >= indexTo; i--)
				{
					//如果isEnabled为true，则说明会停靠这个站点。不能推荐更短的。
					//如果时间过久，则不做推荐
					if (stops[i].isEnabled || stops[i].ArriveTime - startTime > maxAddTime)
						continue;

					var stopTime = i == 0 ? TimeSpan.Zero : stops[i].StopTime;
					if (i != stops.Length - 1)
					{
						//对于非终到站，停靠时间相同或更短，则不做推荐。
						if (stopTime <= stopTimeTo)
							continue;
					}

					//添加到推荐列表中
					altTo.Add(new AlternativeStation()
					{
						ArriveTime = stops[i].ArriveTime,
						IsEndPoint = i == stops.Length - 1,
						IsFromStation = false,
						Name = stops[i].station_name,
						StopTime = stopTime,
						TrainCode = info.code
					});
				}
				altTo.Sort(new AlternativeStationComparer());
				if (altTo.Count > 3)
					altTo.RemoveRange(altFrom.Count - 3, 3);
			}
			//plus 原始线路
			altFrom.Add(new AlternativeStation
			{
				ArriveTime = stops[indexFrom].StartTime,
				IsEndPoint = indexFrom == 0,
				IsFromStation = true,
				Name = stops[indexFrom].station_name,
				StopTime = indexFrom == 0 ? TimeSpan.Zero : stops[indexFrom].StopTime,
				TrainCode = info.code,
				IsOriginal = true,
				IsCrossDate = false,
				Date = stops[indexFrom].StartTime
			});

			altTo.Add(new AlternativeStation
			{
				ArriveTime = stops[indexTo].ArriveTime,
				IsEndPoint = indexTo == stops.Length - 1,
				IsFromStation = false,
				Name = stops[indexTo].station_name,
				StopTime = indexTo == stops.Length - 1 ? TimeSpan.Zero : stops[indexFrom].StopTime,
				TrainCode = info.code,
				IsOriginal = true
			});

			var lines = altFrom.CrossJoin(altTo).Where(s => !s.Key.IsOriginal || !s.Value.IsOriginal).Select(s => new AlternativeLine(s.Key, s.Value, s.Key.Date, s.Key.IsCrossDate) { TrainCode = s.Key.TrainCode }).ToList();
			return lines;
		}

		#endregion

	}

	public static class Cn12306SuggestionUtility
	{
		public static double TimeRangeLimitRadio = double.Parse(System.Configuration.ConfigurationManager.AppSettings["12306_trainsuggestion_maxradio"]);

		public static readonly char[] BaseSeatCodes = "O219PM6430".ToArray();

		public static TimeSpan GetTimeSpace(TimeSpan t1, TimeSpan t2)
		{
			var t = t2 - t1;
			if (t.Ticks < 0)
				t = t.Add(new TimeSpan(1, 0, 0, 0));
			return t;
		}

		/// <summary>
		/// 生成两个序列的交叉
		/// </summary>
		/// <typeparam name="T"></typeparam>
		/// <param name="t1"></param>
		/// <param name="t2"></param>
		/// <returns></returns>
		public static IEnumerable<KeyValuePair<T, T>> CrossJoin<T>(this IEnumerable<T> t1, IEnumerable<T> t2)
		{
			foreach (var t in t1)
			{
				foreach (var tt in t2)
				{
					yield return new KeyValuePair<T, T>(t, tt);
				}
			}
		}

		public static int GetStopTime(string stopTimeStr)
		{
			var m = Regex.Match(stopTimeStr, @"(\d+)分钟");
			return m.Success ? int.Parse(m.Groups[1].Value) : 0;
		}

		public static TimeSpan GetStopTimeSpan(string stopTimeStr)
		{
			var m = Regex.Match(stopTimeStr, @"(\d+)分钟");
			return m.Success ? new TimeSpan(0, int.Parse(m.Groups[1].Value), 0) : TimeSpan.Zero;
		}

		public static int GetTimeValue(string time)
		{
			var m = Regex.Match(time, @"0?(\d+):0?(\d+)");
			return m.Success ? int.Parse(m.Groups[1].Value) * 60 + int.Parse(m.Groups[2].Value) : 0;
		}
		public static TimeSpan GetTimeValueSpan(string time)
		{
			var m = Regex.Match(time, @"0?(\d+):0?(\d+)");
			return m.Success ? new TimeSpan(int.Parse(m.Groups[1].Value), int.Parse(m.Groups[2].Value), 0) : TimeSpan.Zero;
		}

		public static int GetTimeSpace(string time1, string time2)
		{
			var x1 = GetTimeValue(time1);
			var x2 = GetTimeValue(time2);

			return x1 <= x2 ? x2 - x1 : x2 + 24 * 60 - x1;
		}

	}


	public class SuggestionResponse
	{
		public bool Accepted { get; set; }

		public string Key { get; set; }

		public List<AlternativeLineGroup> Groups { get; set; }
	}


	public class AlternativeLineGroup
	{
		public string FromText { get; set; }

		public string ToText { get; set; }

		public string Date { get; set; }

		public List<AlternativeLine> Lines { get; set; }

		public bool IsCrossDate { get; set; }

		/// <summary>
		/// 创建 <see cref="AlternativeLineGroup" />  的新实例(AlternativeLineGroup)
		/// </summary>
		/// <param name="fromText"></param>
		/// <param name="toText"></param>
		/// <param name="date"></param>
		/// <param name="lines"></param>
		public AlternativeLineGroup(string fromText, string toText, string date, List<AlternativeLine> lines, bool isCrossDate)
		{
			FromText = fromText;
			ToText = toText;
			Date = date;
			Lines = lines;
			IsCrossDate = isCrossDate;
		}
	}

	public class AlternativeStation
	{
		public string TrainCode { get; set; }

		public string Code { get; set; }

		public string Name { get; set; }

		public bool IsFromStation { get; set; }

		public bool IsEndPoint { get; set; }

		public DateTime ArriveTime { get; set; }

		public TimeSpan StopTime { get; set; }

		public bool IsOriginal { get; set; }

		/// <summary>
		/// 是否跨天
		/// </summary>
		public bool IsCrossDate { get; set; }

		/// <summary>
		/// 日期
		/// </summary>
		public DateTime Date { get; set; }
	}

	public class AlternativeLine
	{
		public AlternativeStation From { get; private set; }

		public AlternativeStation To { get; private set; }

		public string LineName { get; private set; }

		public string TrainCode { get; set; }

		TimeSpan? _elTimeSpan;

		public double ExtraPrice { get; set; }

		public char BasePriceSeat { get; set; }

		public double BasePrice { get; set; }

		public int Radio { get; set; }

		public string Date { get; set; }

		public bool IsCrossDate { get; set; }

		public TimeSpan ElapsedTime
		{
			get
			{
				if (!_elTimeSpan.HasValue)
				{
					_elTimeSpan = To.ArriveTime - From.ArriveTime;
					if (_elTimeSpan.Value.Ticks < 0)
						_elTimeSpan = _elTimeSpan.Value.Add(new TimeSpan(1, 0, 0, 0));
				}

				return _elTimeSpan.Value;
			}
		}

		/// <summary>
		/// 创建 <see cref="AlternativeLine" />  的新实例(AlternativeLine)
		/// </summary>
		/// <param name="from"></param>
		/// <param name="to"></param>
		public AlternativeLine(AlternativeStation from, AlternativeStation to, DateTime date, bool isCrossDate)
		{
			From = from;
			To = to;
			IsCrossDate = isCrossDate;
			Date = date.ToString("yyyy-MM-dd");

			LineName = From.Name + ";" + To.Name + (isCrossDate ? ";" + Date : "");
		}
	}

	public class AlternativeStationComparer : IComparer<AlternativeStation>
	{
		#region Implementation of IComparer<in AlternativeStation>

		/// <summary>
		/// 比较两个对象并返回一个值，指示一个对象是小于、等于还是大于另一个对象。
		/// </summary>
		/// <returns>
		/// 一个有符号整数，指示 <paramref name="x"/> 与 <paramref name="y"/> 的相对值，如下表所示。 值 含义 小于零 <paramref name="x"/> 小于 <paramref name="y"/>。 零 <paramref name="x"/> 等于 <paramref name="y"/>。 大于零 <paramref name="x"/> 大于 <paramref name="y"/>。
		/// </returns>
		/// <param name="x">要比较的第一个对象。</param><param name="y">要比较的第二个对象。</param>
		public int Compare(AlternativeStation x, AlternativeStation y)
		{
			if (x.IsEndPoint ^ y.IsEndPoint)
				return x.IsEndPoint ? -1 : 1;

			return x.StopTime < y.StopTime ? -1 : 1;
		}

		#endregion
	}

	public class SuggestItemComparer : IComparer<SuggestItem>
	{
		#region Implementation of IComparer<in StopInfo>

		/// <summary>
		/// 比较两个对象并返回一个值，指示一个对象是小于、等于还是大于另一个对象。
		/// </summary>
		/// <returns>
		/// 一个有符号整数，指示 <paramref name="x"/> 与 <paramref name="y"/> 的相对值，如下表所示。 值 含义 小于零 <paramref name="x"/> 小于 <paramref name="y"/>。 零 <paramref name="x"/> 等于 <paramref name="y"/>。 大于零 <paramref name="x"/> 大于 <paramref name="y"/>。
		/// </returns>
		/// <param name="x">要比较的第一个对象。</param><param name="y">要比较的第二个对象。</param>
		public int Compare(SuggestItem x, SuggestItem y)
		{
			if (x.EndPoint ^ y.EndPoint)
				return x.EndPoint ? -1 : 1;

			return x.StopTime - y.StopTime;
		}

		#endregion
	}

	public class SuggestItem
	{
		[JsonProperty("name")]
		public string Name { get; set; }

		[JsonProperty("code")]
		public string Code { get; set; }

		[JsonProperty("ep")]
		public bool EndPoint { get; set; }

		[JsonProperty("st")]
		public int StopTime { get; set; }
	}

	public class RequestInfo
	{
		public string Key { get; set; }

		public string From { get; set; }

		public string To { get; set; }

		public DateTime Date { get; set; }

		public Dictionary<string, TrainInfoItem> Stops { get; set; }

		/// <summary>
		/// 检测是否有非法请求，有则返回true
		/// </summary>
		/// <returns></returns>
		public bool CheckIllegal()
		{
			if (Key != "stupid360")
				return true;
			if (Stops.Values.Any(s => (s.TrainInfo.code == s.TrainInfo.from.code && s.TrainInfo.to.code == s.TrainInfo.end.code) || s.TrainInfo.available < 0))
				return true;

			return false;
		}

		public void PreprocessData()
		{
			foreach (var trainInfoItem in Stops.Values)
			{
				trainInfoItem.PreprocessData(Date);
			}
		}
	}

	public class TrainInfoItem
	{
		[JsonProperty("info")]
		public TrainInfo TrainInfo { get; set; }

		[JsonProperty("stops")]
		public StopInfo[] StopInfos { get; set; }

		public void PreprocessData(DateTime requestDate)
		{
			TrainInfo.from.TimePoint = requestDate.Date.Add(Cn12306SuggestionUtility.GetTimeValueSpan(TrainInfo.from.time));

			//查找开始站
			var startIndex = Array.FindIndex(StopInfos, s => s.isEnabled);
			TrainInfo.from.Index = startIndex;
			TrainInfo.to.Index = Array.FindIndex(StopInfos, startIndex + 1, s => !s.isEnabled);
			if (TrainInfo.to.Index == -1)
				TrainInfo.to.Index = StopInfos.Length - 1;

			StopInfos[startIndex].StartTime = TrainInfo.from.TimePoint;
			if (startIndex > 0)
			{
				StopInfos[startIndex].ArriveTime = requestDate.Add(StopInfos[startIndex].ArriveTimePoint);
				if (StopInfos[startIndex].ArriveTime > StopInfos[startIndex].StartTime)
					StopInfos[startIndex].ArriveTime = StopInfos[startIndex].ArriveTime.AddDays(-1);
			}
			var tempDate = requestDate;
			for (var i = startIndex - 1; i >= 0; i--)
			{
				var sto = StopInfos[i];
				var stn = StopInfos[i + 1];

				sto.StartTime = tempDate.Add(sto.StartTimePoint);
				if (sto.StartTime > stn.StartTime)
				{
					tempDate = tempDate.AddDays(-1);
					sto.StartTime = sto.StartTime.AddDays(-1);
				}
				if (i > 0)
				{
					sto.ArriveTime = tempDate.Add(sto.ArriveTimePoint);
					if (sto.ArriveTime > sto.StartTime)
					{
						tempDate = tempDate.AddDays(-1);
						sto.ArriveTime = sto.ArriveTime.AddDays(-1);
					}
				}
			}
			tempDate = requestDate;
			for (var i = startIndex + 1; i < StopInfos.Length; i++)
			{
				var sto = StopInfos[i];
				var stn = StopInfos[i - 1];

				sto.ArriveTime = tempDate.Add(sto.ArriveTimePoint);
				if (sto.ArriveTime < stn.StartTime)
				{
					tempDate = tempDate.AddDays(1);
					sto.ArriveTime = sto.ArriveTime.AddDays(1);
				}
				if (i < StopInfos.Length - 1)
				{
					sto.StartTime = tempDate.Add(sto.StartTimePoint);

					if (sto.StartTime < sto.ArriveTime)
					{
						tempDate = tempDate.AddDays(1);
						sto.StartTime = sto.StartTime.AddDays(1);
					}
				}
			}

			var startTime = StopInfos.Select(s => s.StartTime).ToArray();
			var stopTime = StopInfos.Select(s => s.StopTime).ToArray();
		}
	}

	public class StopInfo
	{
		public string start_station_name { get; set; }
		public string arrive_time { get; set; }
		public string station_train_code { get; set; }
		public string station_name { get; set; }
		public string train_class_name { get; set; }
		public string service_type { get; set; }
		public string start_time { get; set; }
		public string stopover_time { get; set; }
		public string end_station_name { get; set; }
		public string station_no { get; set; }
		public bool isEnabled { get; set; }

		/// <summary>
		/// 到达时间
		/// </summary>
		public DateTime ArriveTime { get; set; }

		/// <summary>
		/// 发车时间
		/// </summary>
		public DateTime StartTime { get; set; }

		TimeSpan? _stopTimeSpan;

		public TimeSpan StopTime
		{
			get
			{
				if (!_stopTimeSpan.HasValue)
				{
					_stopTimeSpan = Cn12306SuggestionUtility.GetStopTimeSpan(stopover_time);
				}

				return _stopTimeSpan.Value;
			}
		}

		TimeSpan? _arriveTime, _startTime;

		public TimeSpan ArriveTimePoint
		{
			get { return (_arriveTime ?? (_arriveTime = Cn12306SuggestionUtility.GetTimeValueSpan(arrive_time))).Value; }
		}
		public TimeSpan StartTimePoint
		{
			get { return (_startTime ?? (_startTime = Cn12306SuggestionUtility.GetTimeValueSpan(start_time))).Value; }
		}
	}

	public class SeatTicketInfo
	{
		public string code { get; set; }
		public string name { get; set; }
		public int price { get; set; }
		public int count { get; set; }
	}


	public class SimpleStationInfo
	{
		public string code { get; set; }
		public string name { get; set; }
	}


	public class DetailStationInfo : SimpleStationInfo
	{
		public string fromStationNo { get; set; }
		public bool endpoint { get; set; }
		public string time { get; set; }

		/// <summary>
		/// 具体时间
		/// </summary>
		public DateTime TimePoint { get; set; }

		/// <summary>
		/// 在停靠站中的索引
		/// </summary>
		public int Index { get; set; }
	}


	public class TrainInfo
	{
		public string id { get; set; }
		public string code { get; set; }
		public int available { get; set; }
		public SimpleStationInfo start { get; set; }
		public DetailStationInfo from { get; set; }
		public DetailStationInfo to { get; set; }
		public Elapsedtime elapsedTime { get; set; }
		public SimpleStationInfo end { get; set; }
		public string ypinfo { get; set; }
		public string ypinfo_ex { get; set; }
		public string locationCode { get; set; }
		public int controlDay { get; set; }
		public string supportCard { get; set; }
		public string saleTime { get; set; }
		public string secureStr { get; set; }
		public DateTime? selltime { get; set; }
		public string date { get; set; }

		public string limitSellInfo { get; set; }

		public SeatTicketInfo[] tickets { get; set; }

		public Dictionary<char, SeatTicketInfo> ticketMap { get; set; }
	}


	public class Elapsedtime
	{
		public string days { get; set; }
		public string total { get; set; }

		TimeSpan? _elTimeSpan;

		[JsonIgnore]
		public TimeSpan Value
		{
			get
			{
				if (_elTimeSpan == null)
				{
					_elTimeSpan = Cn12306SuggestionUtility.GetTimeValueSpan(total);
				}
				return _elTimeSpan.Value;
			}
		}

		TimeSpan? _maxAddTime;

		/// <summary>
		/// 最大允许加时
		/// </summary>
		[JsonIgnore]
		public TimeSpan MaxAddTime
		{
			get
			{
				if (_maxAddTime == null)
				{
					_maxAddTime = new TimeSpan(0, 0, 0, (int)(Value.TotalSeconds * Cn12306SuggestionUtility.TimeRangeLimitRadio));
				}
				return _maxAddTime.Value;
			}
		}
	}


}