using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.Serialization;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
using TrainInfomationProviderService.StationInfo;

namespace TrainInfomationProviderService.TrainInfo.Entities
{
	public class TrainInfoStorage
	{

		[JsonProperty("l")]
		public List<Train> Trains { get; set; }

		[JsonIgnore]
		public Dictionary<string, Train[]> TrainsCodeMap { get; private set; }

		[JsonIgnore]
		public Dictionary<string, Train[]> TrainsIdMap { get; private set; }

		/// <summary>
		/// 车站-发车车次信息
		/// </summary>
		[JsonIgnore]
		public Dictionary<string, List<Train>> StationLeftTrainData { get; private set; }

		/// <summary>
		/// 车站-发车车次信息
		/// </summary>
		[JsonIgnore]
		public Dictionary<string, List<Train>> StationArriveTrainData { get; private set; }

		/// <summary>
		/// 站点路由表
		/// </summary>
		[JsonIgnore]
		public Dictionary<string, HashSet<string>> StationRouteMap { get; private set; }

		/// <summary>
		/// 创建 <see cref="TrainInfoStorage" />  的新实例(TrainInfoStorage)
		/// </summary>
		public TrainInfoStorage(IEnumerable<Train> trains)
		{
			Trains = trains.ToList();
			Init();
		}

		[JsonConstructor]
		protected TrainInfoStorage()
		{
		}

		[OnDeserialized]
		void DeserializeCallback(StreamingContext context)
		{
			Init();
		}

		/// <summary>
		/// 初始化
		/// </summary>
		public void Init()
		{
			TrainsCodeMap = Trains.GroupBy(s => s.Code).ToDictionary(s => s.Key, s =>
			{
				var arr = s.ToArray();
				//if (arr.Length > 1)
				//{
				//	Trace.TraceWarning("[TRAIN_INFO_STORAGE] 警告：车次编号 {0} 出现重复数据，请查证，重复次数：{1}", s.Key, arr.Length - 1);
				//}
				return arr.ToArray();
			}, StringComparer.OrdinalIgnoreCase);
			TrainsIdMap = Trains.GroupBy(s => s.Id).ToDictionary(s => s.Key, s =>
			{
				var arr = s.ToArray();
				//if (arr.Length > 1)
				//{
				//	Trace.TraceWarning("[TRAIN_INFO_STORAGE] 警告：车次ID {0} 出现重复数据，请查证，重复次数：{1}", s.Key, arr.Length - 1);
				//}
				return arr;
			}, StringComparer.OrdinalIgnoreCase);
		}

		/// <summary>
		/// 初始化车站->车次信息
		/// </summary>
		public void InitStationTrainData()
		{
			StationLeftTrainData = new Dictionary<string, List<Train>>();
			StationArriveTrainData = new Dictionary<string, List<Train>>();
			foreach (var train in Trains)
			{
				for (int i = 0; i < train.TrainStops.Count; i++)
				{
					var stop = train.TrainStops[i];

					if (i > 0)
						StationArriveTrainData.GetValue(stop.Code, _ => new List<Train>()).Add(train);
					if (i < train.TrainStops.Count - 1)
						StationLeftTrainData.GetValue(stop.Code, _ => new List<Train>()).Add(train);
				}
			}
		}
	}
}