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

namespace TrainInfomationProviderService.TrainInfo.Entities
{
	public class TrainTransitSearchOptions
	{
		/// <summary>
		/// 最大允许多出来的时间
		/// </summary>
		public int MaxExtraMinutes { get; set; }
		
		/// <summary>
		/// 最优先推荐的线路数
		/// </summary>
		public int TopMostRecommandCount { get; set; }

		public void InitLimit(int baseMinutes)
		{
			if (baseMinutes < 120)
			{
				//2小时内的车最大允许到6小时
				MaxExtraMinutes = baseMinutes*3;
			}
			else if (baseMinutes < 180)
			{
				MaxExtraMinutes = (int)(baseMinutes * 2.5);
			}
			else if (baseMinutes < 300)
			{
				MaxExtraMinutes = (int)(baseMinutes * 2);
			}
			else if (baseMinutes < 900)
			{
				MaxExtraMinutes = (int)(baseMinutes * 1.5);
			}
			else
			{
				MaxExtraMinutes = (int)(baseMinutes * 1.3);
			}
		}

		/// <summary>
		/// 同一个车次最高保持的换乘站数
		/// </summary>
		public int SameLineMaxKeepStations { get; set; }

		/// <summary>
		/// 当换乘线路数超过此数目时，砍掉超过时间的
		/// </summary>
		public int StartCutLongRunningCount { get; set; }

		/// <summary>
		/// 砍掉超过时间比例
		/// </summary>
		public double CutLongRunningRate { get; set; }

		/// <summary>
		/// 创建 <see cref="TrainTransitSearchOptions" />  的新实例(TrainTransitSearchOptions)
		/// </summary>
		public TrainTransitSearchOptions()
		{
			SameLineMaxKeepStations = 3;
			CutLongRunningRate = 1.7;
			StartCutLongRunningCount = 5;
			TopMostRecommandCount = 16;
		}
	}
}