using Microsoft.IdentityModel.Tokens;
using Sarand.Net.Standard.Base.App;
using Sarand.Net.Standard.Base.Bus;
using Sarand.Net.Standard.Base.Utils;
using Saxonite.Net.Standard.Base.App;
using Saxonite.Net.Standard.Base.Bus;
using Saxonite.Net.Standard.Base.Consoles;
using System;
using System.Collections.Generic;
using System.Text;

namespace Saxonite.Net.Core.Web.Base.Consoles
{
	//=======================================================================
	public abstract class SaxDataCacheConsole_Web : SaxDataCacheConsole
	{
		//-------------------------------------------------------------------
		// Data members.
		private class DataMembers
		{
			public SaxInternals internals;
		}
		private DataMembers data = new DataMembers();

		//-------------------------------------------------------------------
		// Protected construction.
		protected SaxDataCacheConsole_Web(SaxSessionContext sessionContext) :
			base(sessionContext)
		{
			data.internals = new SaxInternals(sessionContext, false);
		}
		protected override void Dispose(bool disposing)
		{
			if (disposing)
			{
				data.internals.Dispose();
			}
			base.Dispose(disposing);
		}

		//-------------------------------------------------------------------
		// Utilities.
		protected abstract void ForceRefresh();

		public override void PopulateCachedDataToInternals(SaxInternals internals)
		{
			if (regionsData.regionDataMap == null) ForceRefresh();

			// Regions.
			List<SaxRegion.Data> activeRegionDataList = new List<SaxRegion.Data>();
			lock (regionsData)
				activeRegionDataList.AddRange(regionsData.activeRegionDataList);
			internals.PopulateRegionCache(activeRegionDataList);

			// Sports.
			List<SaxSport.Data> activeSportDataList = new List<SaxSport.Data>();
			lock (sportsData)
				activeSportDataList.AddRange(sportsData.activeSportDataList);
			internals.PopulateSportCache(activeSportDataList);
		}

		//-------------------------------------------------------------------
		// Regions.
		public bool RegionsSupported { get; protected set; } = false;
		private class RegionsData
		{
			public Dictionary<SysId, SaxRegion.Data> regionDataMap = null;
			public List<SaxRegion.Data> activeRegionDataList = null;
		}
		private readonly RegionsData regionsData = new RegionsData();
		public override List<SaxRegion> GetActiveRegions()
		{
			String fn = GetType().Name + ".ActiveRegions";
			if (!RegionsSupported) throw new NotSupportedException(fn + " Regions not supported.");
			List<SaxRegion> activeRegions = new List<SaxRegion>();
			List<SaxRegion.Data> activeRegionDataList = new List<SaxRegion.Data>();
			if (regionsData.regionDataMap == null) ForceRefresh();
			lock (regionsData)
			{
				if (regionsData.regionDataMap == null) throw new NotSupportedException(fn + " Regions not populated.");
				activeRegionDataList.AddRange(regionsData.activeRegionDataList);
			}
			foreach (SaxRegion.Data regionData in activeRegionDataList)
				activeRegions.Add(GetRegion(regionData));
			return activeRegions;
		}
		protected void RefreshRegions()
		{
			String fn = GetType().Name + ".RefreshRegions";
			if (!RegionsSupported) throw new NotSupportedException(fn + " Regions not supported.");
			SaLogger.Info(fn + " START.", false);
			DateTime startedAt = DateTime.Now;

			// Refreshed lists will be populated in isolation and then used to instantaneously replace the cache lists.
			Dictionary<SysId, SaxRegion.Data> newRegionDataMap = new Dictionary<SysId, SaxRegion.Data>();
			List<SaxRegion.Data> newActiveRegionDataList = new List<SaxRegion.Data>();

			// Query Regions to replace cache.
			SaxRegion.Params prmRegion = new SaxRegion.Params();
			prmRegion.StatusCat = SaxRegion.StatusCat.NotDeleted;
			foreach (SaxRegion region in data.internals.ReferenceMgr.GetRegionList(prmRegion))
			{
				// Only interested in retaining the Data objects.
				newRegionDataMap[region.Id] = region.GetData();
				region.Dispose();
			}

			// Populate replacement list of active regions.
			foreach (SaxRegion.Data regionData in newRegionDataMap.GetValues())
			{
				if (IsRegionActive(newRegionDataMap, regionData))
					newActiveRegionDataList.Add(regionData.Clone());
			}

			// Replace the list of Regions.
			lock (regionsData)
			{
				// Assign the refreshed regions and active regions.
				// NB The old regions don't need to be disposed as they are SaxRegion.Data objects.
				regionsData.regionDataMap = newRegionDataMap;
				regionsData.activeRegionDataList = newActiveRegionDataList;
			}
			SaLogger.Info(fn + " END. Regions found: " + regionsData.regionDataMap.Count + ". Elapsed: " + DateUtil.FormatNumberOfSeconds((DateTime.Now - startedAt).TotalSeconds), true);
		}
		private static bool IsRegionActive(Dictionary<SysId, SaxRegion.Data> regionDataMap, SaxRegion.Data regionData)
		{
			if (regionData == null) return false;
			if (!regionData.IsStatusActive) return false;
			if (SysId.IsValid(regionData.RegionIdParent))
				return IsRegionActive(regionDataMap, regionDataMap.GetValue(regionData.RegionIdParent, null));
			return true;
		}
		private SaxRegion GetRegion(SaxRegion.Data regionData)
		{
			if (regionData == null) return null;
			SaxRegion region = data.internals.ReferenceMgr.CreateRegion();
			region.SetData(regionData);
			return region;
		}

		//-------------------------------------------------------------------
		// Sports.
		public bool SportsSupported { get; protected set; } = false;
		private class SportsData
		{
			public Dictionary<SysId, SaxSport.Data> sportDataMap = null;
			public List<SaxSport.Data> activeSportDataList = null;
		}
		private readonly SportsData sportsData = new SportsData();
		public override List<SaxSport> GetActiveSports()
		{
			String fn = GetType().Name + ".ActiveSports";
			if (!SportsSupported) throw new NotSupportedException(fn + " Sports not supported.");
			List<SaxSport> activeSports = new List<SaxSport>();
			List<SaxSport.Data> activeSportDataList = new List<SaxSport.Data>();
			if (sportsData.sportDataMap == null) ForceRefresh();
			lock (sportsData)
			{
				if (sportsData.sportDataMap == null) throw new NotSupportedException(fn + " Sports not populated.");
				activeSportDataList.AddRange(sportsData.activeSportDataList);
			}
			foreach (SaxSport.Data sportData in activeSportDataList)
				activeSports.Add(GetSport(sportData));
			return activeSports;
		}
		protected void RefreshSports()
		{
			String fn = GetType().Name + ".RefreshSports";
			if (!SportsSupported) throw new NotSupportedException(fn + " Sports not supported.");
			SaLogger.Info(fn + " START.", false);
			DateTime startedAt = DateTime.Now;

			// Refreshed lists will be populated in isolation and then used to instantaneously replace the cache lists.
			Dictionary<SysId, SaxSport.Data> newSportDataMap = new Dictionary<SysId, SaxSport.Data>();
			List<SaxSport.Data> newActiveSportDataList = new List<SaxSport.Data>();

			// Query Sports to replace cache.
			SaxSport.Params prmSport = new SaxSport.Params();
			prmSport.StatusCat = SaxSport.StatusCat.NotDeleted;
			foreach (SaxSport sport in data.internals.ReferenceMgr.GetSportList(prmSport))
			{
				// Only interested in retaining the Data objects.
				newSportDataMap[sport.Id] = sport.GetData();
				sport.Dispose();
			}

			// Populate replacement list of active sports.
			foreach (SaxSport.Data sportData in newSportDataMap.GetValues())
			{
				if (IsSportActive(newSportDataMap, sportData))
					newActiveSportDataList.Add(sportData.Clone());
			}

			// Replace the list of Sports.
			lock (sportsData)
			{
				// Assign the refreshed sports and active sports.
				// NB The old sports don't need to be disposed as they are SaxSport.Data objects.
				sportsData.sportDataMap = newSportDataMap;
				sportsData.activeSportDataList = newActiveSportDataList;
			}
			SaLogger.Info(fn + " END. Sports found: " + sportsData.sportDataMap.Count + ". Elapsed: " + DateUtil.FormatNumberOfSeconds((DateTime.Now - startedAt).TotalSeconds), true);
		}
		private static bool IsSportActive(Dictionary<SysId, SaxSport.Data> sportDataMap, SaxSport.Data sportData)
		{
			if (sportData == null) return false;
			if (!sportData.IsStatusActive) return false;
			return true;
		}
		private SaxSport GetSport(SaxSport.Data sportData)
		{
			if (sportData == null) return null;
			SaxSport sport = data.internals.ReferenceMgr.CreateSport();
			sport.SetData(sportData);
			return sport;
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
}