using Npgsql;
using NpgsqlTypes;
using skyscraper8.DvbNip;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;

namespace skyscraper5.Data.PostgreSql
{
	public partial class PostgresqlDataStore
	{
		private Dictionary<NipActualCarrierInformation, int> _knownNipCarriers;

		public bool DvbNipTestForCarrier(NipActualCarrierInformation currentCarrierInformation)
		{
			if (_knownNipCarriers != null)
			{
				if (_knownNipCarriers.ContainsKey(currentCarrierInformation))
					return true;
			}

			bool result = false;
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText = "SELECT serial FROM dvbnip_carrier_information WHERE nid = @nid AND cid = @cid AND lid = @lid AND sid = @sid";
				command.Parameters.AddWithValue("@nid", NpgsqlDbType.Integer, (int)currentCarrierInformation.NipNetworkId);
				command.Parameters.AddWithValue("@cid", NpgsqlDbType.Integer, (int)currentCarrierInformation.NipCarrierId);
				command.Parameters.AddWithValue("@lid", NpgsqlDbType.Integer, (int)currentCarrierInformation.NipLinkId);
				command.Parameters.AddWithValue("@sid", NpgsqlDbType.Integer, (int)currentCarrierInformation.NipServiceId);
				NpgsqlDataReader dataReader = command.ExecuteReader();
				if (dataReader.Read())
				{
					if (_knownNipCarriers == null)
						_knownNipCarriers = new Dictionary<NipActualCarrierInformation, int>();

					int value = dataReader.GetInt32(0);
					_knownNipCarriers.Add(currentCarrierInformation, value);
					result = true;
				}
				dataReader.Close();
			}

			return result;
		}

		public void DvbNipInsertCarrier(NipActualCarrierInformation currentCarrierInformation)
		{
			EnqueueTask(x => DvbNipInsertCarrierEx(x, currentCarrierInformation));
			EnqueueTask(CommitTransaction);
		}

		private void DvbNipInsertCarrierEx(NpgsqlConnection connection, NipActualCarrierInformation currentCarrierInformation)
		{
			NpgsqlCommand command = connection.CreateCommand();
			command.CommandText = "INSERT INTO dvbnip_carrier_information VALUES (DEFAULT,DEFAULT,@nid,@cid,@lid,@sid,@spn)";
			command.Parameters.AddWithValue("@nid", NpgsqlDbType.Integer, (int)currentCarrierInformation.NipNetworkId);
			command.Parameters.AddWithValue("@cid", NpgsqlDbType.Integer, (int)currentCarrierInformation.NipCarrierId);
			command.Parameters.AddWithValue("@lid", NpgsqlDbType.Integer, (int)currentCarrierInformation.NipLinkId);
			command.Parameters.AddWithValue("@sid", NpgsqlDbType.Integer, (int)currentCarrierInformation.NipServiceId);
			command.Parameters.AddWithValue("@spn", NpgsqlDbType.Text, currentCarrierInformation.NipStreamProviderName);
			int a = command.ExecuteNonQuery();
			if (a != 1)
				throw new DataException(String.Format("Wanted to insert 1 row, got {0}", a));
			command.Dispose();
		}

		public bool DvbNipPrivateDataSpecifier(NipActualCarrierInformation currentCarrierInformation, DateTime versionUpdate,
			uint privateDataSpecifier, List<string> privateDataSessions)
		{
			throw new NotImplementedException();
		}

		private bool[] _dvbNipKnownNetworks;
		public bool DvbNipTestForNetwork(BroadcastNetworkType network)
		{
			if (_dvbNipKnownNetworks == null)
				_dvbNipKnownNetworks = new bool[ushort.MaxValue];

			if (_dvbNipKnownNetworks[network.NIPNetworkID])
				return true;

			bool result = false;
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText = "SELECT dateadded FROM dvbnip_network WHERE nid = @nid";
				command.Parameters.AddWithValue("@nid", NpgsqlDbType.Integer, (int)network.NIPNetworkID);
				NpgsqlDataReader dataReader = command.ExecuteReader();
				if (dataReader.Read())
				{
					_dvbNipKnownNetworks[network.NIPNetworkID] = true;
					result = true;
				}
				dataReader.Close();
				connection.Close();
			}

			return result;
		}

		public void DvbNipInsertNetwork(BroadcastNetworkType network)
		{
			_dvbNipKnownNetworks[network.NIPNetworkID] = true;
			EnqueueTask(x => DvbNipInsertNetworkEx(x, network));
		}

		private void DvbNipInsertNetworkEx(NpgsqlConnection connection, BroadcastNetworkType network)
		{
			NpgsqlCommand command = connection.CreateCommand();
			command.CommandText = "INSERT INTO dvbnip_network VALUES (@nid,DEFAULT,@pn,@nn,@nt,@op,@wef)";
			command.Parameters.AddWithValue("@nid", NpgsqlDbType.Integer, (int)network.NIPNetworkID);
			command.Parameters.AddWithValue("@pn", NpgsqlDbType.Text, network.NIPNetworkProviderName);
			command.Parameters.AddWithValue("@nn", NpgsqlDbType.Text, network.NetworkName);
			command.Parameters.AddWithValue("@nt", NpgsqlDbType.Integer, (int)network.NetworkType);
			command.Parameters.AddWithValue("@op", NpgsqlDbType.Double, network.SatellitePosition.OrbitalPosition);
			command.Parameters.AddWithValue("@wef", NpgsqlDbType.Integer, (int)network.SatellitePosition.West_East_flag);
			command.ExecuteNonQuery();
			command.Dispose();

			foreach (NIPStreamType nipStreamType in network.NIPStream)
			{
				DvbNipInsertNetworkStreamType(connection, network.NIPNetworkID, nipStreamType);
			}
		}

		private void DvbNipInsertNetworkStreamType(NpgsqlConnection connection, ushort networkNipNetworkId, NIPStreamType nipStreamType)
		{
			NpgsqlCommand command = connection.CreateCommand();
			command.CommandText = "INSERT INTO dvbnip_network_stream VALUES (@nid,@cid,@lid,@sid,@spn,DEFAULT,@llf,@bt,@s)";
			command.Parameters.AddWithValue("@nid", NpgsqlDbType.Integer, (int)networkNipNetworkId);
			command.Parameters.AddWithValue("@cid", NpgsqlDbType.Integer, int.Parse(nipStreamType.NIPCarrierID));
			command.Parameters.AddWithValue("@lid", NpgsqlDbType.Integer, int.Parse(nipStreamType.NIPLinkID));
			command.Parameters.AddWithValue("@sid", NpgsqlDbType.Integer, (int)nipStreamType.NIPServiceID);
			command.Parameters.AddWithValue("@spn", NpgsqlDbType.Text, nipStreamType.NIPStreamProviderName);
			command.Parameters.AddWithValue("@llf", NpgsqlDbType.Integer, (int)nipStreamType.LinkLayerFormat);
			command.Parameters.AddWithValue("@bt", NpgsqlDbType.Integer, (int)nipStreamType.BootstrapStream.BootstrapType);
			command.Parameters.AddWithValue("@s", NpgsqlDbType.Integer, (int)nipStreamType.BootstrapStream.Status);
			command.ExecuteNonQuery();
			command.Dispose();

		}

		private HashSet<Tuple<ushort, ushort, ushort, ushort>> _knownDvbNipServices;
		public bool DvbNipTestForService(BroadcastMediaStreamType broadcastMediaStreamType)
		{
			if (_knownDvbNipServices == null)
				_knownDvbNipServices = new HashSet<Tuple<ushort, ushort, ushort, ushort>>();

			Tuple<ushort, ushort, ushort, ushort> coordinates = new Tuple<ushort, ushort, ushort, ushort>(
				broadcastMediaStreamType.NIPNetworkID, ushort.Parse(broadcastMediaStreamType.NIPCarrierID),
				ushort.Parse(broadcastMediaStreamType.NIPLinkID), broadcastMediaStreamType.NIPServiceID);

			if (_knownDvbNipServices.Contains(coordinates))
				return true;

			bool result = false;
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText =
					"SELECT dateadded FROM dvbnip_services WHERE nid = @nid AND cid = @cid AND lid = @lid AND sid = @sid";
				command.Parameters.AddWithValue("@nid", NpgsqlDbType.Integer, (int)coordinates.Item1);
				command.Parameters.AddWithValue("@cid", NpgsqlDbType.Integer, (int)coordinates.Item2);
				command.Parameters.AddWithValue("@lid", NpgsqlDbType.Integer, (int)coordinates.Item3);
				command.Parameters.AddWithValue("@sid", NpgsqlDbType.Integer, (int)coordinates.Item4);
				NpgsqlDataReader dataReader = command.ExecuteReader();
				if (dataReader.Read())
				{
					_knownDvbNipServices.Add(coordinates);
					result = true;
				}

				dataReader.Close();
				command.Dispose();
				connection.Close();
			}

			return result;
		}

		public void DvbNipInsertService(BroadcastMediaStreamType broadcastMediaStreamType)
		{
			EnqueueTask(x => DvbNipInsertServiceEx(x,broadcastMediaStreamType));
		}

		private void DvbNipInsertServiceEx(NpgsqlConnection connection, BroadcastMediaStreamType broadcastMediaStreamType)
		{
			if (broadcastMediaStreamType.BroadcastMedia.InteractiveApplications != null)
				throw new NotImplementedException(nameof(broadcastMediaStreamType.BroadcastMedia.InteractiveApplications));

			if (_knownDvbNipServices == null)
				_knownDvbNipServices = new HashSet<Tuple<ushort, ushort, ushort, ushort>>();

			Tuple<ushort, ushort, ushort, ushort> coordinates = new Tuple<ushort, ushort, ushort, ushort>(
				broadcastMediaStreamType.NIPNetworkID, ushort.Parse(broadcastMediaStreamType.NIPCarrierID),
				ushort.Parse(broadcastMediaStreamType.NIPLinkID), broadcastMediaStreamType.NIPServiceID);

			NpgsqlCommand command = connection.CreateCommand();
			command.CommandText = "INSERT INTO dvbnip_services VALUES (@nid,@cid,@lid,@sid,DEFAULT,@uri)";
			command.Parameters.AddWithValue("@nid", NpgsqlDbType.Integer, (int)coordinates.Item1);
			command.Parameters.AddWithValue("@cid", NpgsqlDbType.Integer, (int)coordinates.Item2);
			command.Parameters.AddWithValue("@lid", NpgsqlDbType.Integer, (int)coordinates.Item3);
			command.Parameters.AddWithValue("@sid", NpgsqlDbType.Integer, (int)coordinates.Item4);
			command.Parameters.AddWithValue("@uri", NpgsqlDbType.Json, JsonConvert.SerializeObject(broadcastMediaStreamType.BroadcastMedia.URI));
			int rowsInserted = command.ExecuteNonQuery();
			if (rowsInserted != 1)
				throw new DataException(String.Format("Expected to insert {0} rows, but it were {1}", 1, rowsInserted));
			_knownDvbNipServices.Add(coordinates);
		}

		public bool DvbNipTestForMulticastSession(MulticastSessionType multicastSession)
		{
			throw new NotImplementedException();
		}

		public void DvbNipInsertMulticastSession(MulticastSessionType multicastSession)
		{
			throw new NotImplementedException();
		}

		public bool DvbNipTestForMulticastGatewayConfigurationTransportSession(NipActualCarrierInformation carrier,
			MulticastEndpointAddressType multicastEndpointAddressType)
		{
			throw new NotImplementedException();
		}

		public void DvbNipInsertMulticastGatewayConfigurationTransportSession(NipActualCarrierInformation carrier,
			MulticastGatewayConfigurationTransportSessionType multicastGatewayConfigurationTransportSession)
		{
			throw new NotImplementedException();
		}
	}
}