using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TrainInfomationProviderService.TrainInfo.Entities
{
	public class TrainTransitOnceResult
	{
		public TrainLineSegment First { get; private set; }

		public TrainLineSegment Second { get; private set; }

		/// <summary>
		/// 不推荐车次
		/// </summary>
		public bool NotRecommand { get; private set; }

		/// <summary>
		/// 创建 <see cref="TrainTransitOnceResult" />  的新实例(TrainTransitOnceResult)
		/// </summary>
		/// <param name="first"></param>
		/// <param name="second"></param>
		public TrainTransitOnceResult(TrainLineSegment first, TrainLineSegment second, DateTime date, bool notRecommand=false)
		{
			First = first;
			Second = second;
			InitTimeInfo(date);
			NotRecommand = notRecommand;
		}

		void InitTimeInfo(DateTime date)
		{
			FirstTrainLeftDate = date.Add(First.From.Left.Value.AddDays(-First.From.Left.Value.Days));
			FirstTrainArriveDate = FirstTrainLeftDate.Add(First.ElapsedTime);

			SecondTrainLeftDate = FirstTrainArriveDate.Date.Add(Second.From.Left.Value.AddDays(-Second.From.Left.Value.Days));
			if (SecondTrainLeftDate < FirstTrainArriveDate)
				SecondTrainLeftDate = SecondTrainLeftDate.AddDays(1);
			SecondTrainArriveDate = SecondTrainLeftDate.Add(Second.ElapsedTime);

			WaitElaspsedTime = SecondTrainLeftDate - FirstTrainArriveDate;
			TotalElapsedTime = SecondTrainArriveDate - FirstTrainLeftDate;
		}

		/// <summary>
		/// 前车出发时间
		/// </summary>
		public DateTime FirstTrainLeftDate { get; private set; }

		/// <summary>
		/// 前车到达时间
		/// </summary>
		public DateTime FirstTrainArriveDate { get; private set; }

		/// <summary>
		/// 后车出发时间
		/// </summary>
		public DateTime SecondTrainLeftDate { get; private set; }

		/// <summary>
		/// 后车到达时间
		/// </summary>
		public DateTime SecondTrainArriveDate { get; private set; }

		/// <summary>
		/// 前车历时
		/// </summary>
		public TimeSpan FirstElapsedTime { get { return First.ElapsedTime; } }

		/// <summary>
		/// 后车历时
		/// </summary>
		public TimeSpan SecondElapsedTime { get { return Second.ElapsedTime; } }

		/// <summary>
		/// 等待耗时
		/// </summary>
		public TimeSpan WaitElaspsedTime { get; private set; }

		/// <summary>
		/// 总时间
		/// </summary>
		public TimeSpan TotalElapsedTime { get; private set; }
	}
}