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

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

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

				context.Response.ContentType = "application/json";
				context.Response.Write(JsonConvert.SerializeObject(suggestion));
			}
			catch (Exception ex)
			{
				return;
			}
		}

		/// <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 Dictionary<char, int> _timeRangeLimit = new Dictionary<char, int>()
													{
														{'D', 240},
														{'G', 180},
														{'*', 300}
													};

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

		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;
		}

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

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

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



			return string.Empty;
		}

		
		

		#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 From { get; set; }

		public string To { get; set; }

		public Dictionary<string, TrainInfo> 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 (Stops.Values.Any(s => s.from.code == s.start.code && s.to.code == s.end.code))
				return true;

			return false;
		}
	}


	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; }
	}

	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; }
	}


	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 object selltime { get; set; }
		public string date { get; set; }
		public object 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; }
	}


}