using skyscraper5.Skyscraper.IO.CrazycatStreamReader;
using skyscraper5.src.Skyscraper.FrequencyListGenerator;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Net.NetworkInformation;
using System.Text;
using System.Threading.Tasks;
using Npgsql;
using NpgsqlTypes;
using skyscraper5.Skyscraper;
using skyscraper5.Skyscraper.Gps;

namespace skyscraper5.Data.PostgreSql
{
	public partial class PostgresqlDataStore
	{
		public void InsertBlindscanJob(DbBlindscanJob jobInDb)
		{
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText = "insert into skyscraper5_blindscan_jobs (uuid, tuner_mac, tuner_std, diseqc_index, horizontal_low, horizontal_high,\r\n" +
				                      "                                        vertical_low, vertical_high, gps_lon, gps_lat, sat_position)\r\n" +
				                      "values (@uuid,@tuner_mac,@tuner_std,@diseqc_index,@hl,@hh,@vl,@vh,@gps_lon,@gps_lat,@sat_position);";
				command.Parameters.AddWithValue("@uuid", NpgsqlDbType.Uuid, jobInDb.JobGuid);
				command.Parameters.AddWithValue("@tuner_mac", NpgsqlDbType.MacAddr, jobInDb.TunerMAC);
				command.Parameters.AddWithValue("@tuner_std", NpgsqlDbType.Integer, (int)jobInDb.TunerStandard);
				command.Parameters.AddWithValue("@diseqc_index", NpgsqlDbType.Integer, jobInDb.DiseqCIndex);
				command.Parameters.AddWithValue("@hl", NpgsqlDbType.Integer, (int)jobInDb.HorizontalLowState);
				command.Parameters.AddWithValue("@hh", NpgsqlDbType.Integer, (int)jobInDb.HorizontalHighState);
				command.Parameters.AddWithValue("@vl", NpgsqlDbType.Integer, (int)jobInDb.VerticalLowState);
				command.Parameters.AddWithValue("@vh", NpgsqlDbType.Integer, (int)jobInDb.VerticalHighState);
				if (jobInDb.GpsCoordinate.HasValue)
				{
					command.Parameters.AddWithValue("@gps_lon", NpgsqlDbType.Double, (double)jobInDb.GpsCoordinate.Value.Longitude);
					command.Parameters.AddWithValue("@gps_lat", NpgsqlDbType.Double, (double)jobInDb.GpsCoordinate.Value.Latitude);
				}
				else
				{
					command.Parameters.AddWithValue("@gps_lon", NpgsqlDbType.Double, DBNull.Value);
					command.Parameters.AddWithValue("@gps_lat", NpgsqlDbType.Double, DBNull.Value);
				}

				if (jobInDb.SatPosition != null)
				{
					command.Parameters.AddWithValue("@sat_position", NpgsqlDbType.Integer, jobInDb.SatPosition.Checksum);
				}
				else
				{
					command.Parameters.AddWithValue("@sat_position", NpgsqlDbType.Integer, DBNull.Value);
				}

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

		public void UpdateJobState(DbBlindscanJob jobInDb)
		{
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText =
					"UPDATE skyscraper5_blindscan_jobs SET horizontal_low = @hl, horizontal_high = @hh, vertical_low = @vl, vertical_high = @vh, dateupdated = CURRENT_TIMESTAMP, version = version + 1 WHERE uuid = @uuid";
				command.Parameters.AddWithValue("@uuid", NpgsqlDbType.Uuid, jobInDb.JobGuid);
				command.Parameters.AddWithValue("@hl", NpgsqlDbType.Integer, (int)jobInDb.HorizontalLowState);
				command.Parameters.AddWithValue("@hh", NpgsqlDbType.Integer, (int)jobInDb.HorizontalHighState);
				command.Parameters.AddWithValue("@vl", NpgsqlDbType.Integer, (int)jobInDb.VerticalLowState);
				command.Parameters.AddWithValue("@vh", NpgsqlDbType.Integer, (int)jobInDb.VerticalHighState);
				int result = command.ExecuteNonQuery();
				if (result != 1)
					throw new InvalidDataException("db update failed");
				command.Dispose();
				connection.Close();
			}
		}

		public void InsertSearchResult(DbBlindscanJob jobInDb, bool satellite, SearchResult searchResult, int polarityIndex, SearchResult2 searchResult2)
		{
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText =
					"insert into skyscraper5_blindscan_search_results (related_job, satellite, polarity_index,\r\n" +
					"                                                  lock, freq, pol, sr, std_type, mod_type, fec,\r\n" +
					"                                                  inversion, roll_off, pilot, frame, coding_type, stream_type, mis,\r\n" +
					"                                                  input_stream_ids, issyi, npd, pls, cw, bitrate, rf_level, snr, ber,\r\n" +
					"                                                  pre_ber, bw, feclp, transmode, guard, hierarchy, plp, lid, s1type,\r\n" +
					"                                                  payload, bw_ext, mode_t2, ver_t2, cell_id, net_id)\r\n" +
					"values (@related_job, @satellite, @polarity_index, @lock, @freq, @pol, @sr, @std_type, @mod_type, @fec, @inversion,\r\n" +
					"        @roll_off, @pilot, @frame, @coding_type, @stream_type, @mis, @input_stream_ids, @issyi, @npd, @pls, @cw,\r\n" +
					"        @bitrate, @rf_level, @snr, @ber, @pre_ber, @bw, @feclp, @transmode, @guard, @hierarchy, @plp, @lid, @s1type,\r\n" +
					"        @payload, @bw_ext, @mode_t2, @ver_t2, @cell_id, @net_id)";
				command.Parameters.Add("@related_job", NpgsqlDbType.Uuid);
				command.Parameters.Add("@satellite", NpgsqlDbType.Boolean);
				command.Parameters.Add("@polarity_index", NpgsqlDbType.Integer);
				command.Parameters.Add("@lock", NpgsqlDbType.Boolean);
				command.Parameters.Add("@freq", NpgsqlDbType.Integer);
				command.Parameters.Add("@pol", NpgsqlDbType.Integer);
				command.Parameters.Add("@sr", NpgsqlDbType.Integer);
				command.Parameters.Add("@std_type", NpgsqlDbType.Integer);
				command.Parameters.Add("@mod_type", NpgsqlDbType.Integer);
				command.Parameters.Add("@fec", NpgsqlDbType.Integer);
				command.Parameters.Add("@inversion", NpgsqlDbType.Integer);
				command.Parameters.Add("@roll_off", NpgsqlDbType.Integer);
				command.Parameters.Add("@pilot", NpgsqlDbType.Integer);
				command.Parameters.Add("@frame", NpgsqlDbType.Integer);
				command.Parameters.Add("@coding_type", NpgsqlDbType.Integer);
				command.Parameters.Add("@stream_type", NpgsqlDbType.Integer);
				command.Parameters.Add("@mis", NpgsqlDbType.Integer);
				command.Parameters.Add("@input_stream_ids", NpgsqlDbType.Bytea);
				command.Parameters.Add("@issyi", NpgsqlDbType.Smallint);
				command.Parameters.Add("@npd", NpgsqlDbType.Smallint);
				command.Parameters.Add("@pls", NpgsqlDbType.Integer);
				command.Parameters.Add("@cw", NpgsqlDbType.Integer);
				command.Parameters.Add("@bitrate", NpgsqlDbType.Integer);
				command.Parameters.Add("@rf_level", NpgsqlDbType.Integer);
				command.Parameters.Add("@snr", NpgsqlDbType.Double);
				command.Parameters.Add("@ber", NpgsqlDbType.Double);
				command.Parameters.Add("@pre_ber", NpgsqlDbType.Double);
				//SR2
				command.Parameters.Add("@bw", NpgsqlDbType.Integer);
				command.Parameters.Add("@feclp", NpgsqlDbType.Integer);
				command.Parameters.Add("@transmode", NpgsqlDbType.Integer);
				command.Parameters.Add("@guard", NpgsqlDbType.Integer);
				command.Parameters.Add("@hierarchy", NpgsqlDbType.Integer);
				command.Parameters.Add("@plp", NpgsqlDbType.Integer);
				command.Parameters.Add("@lid", NpgsqlDbType.Bytea);
				command.Parameters.Add("@s1type", NpgsqlDbType.Integer);
				command.Parameters.Add("@payload", NpgsqlDbType.Integer);
				command.Parameters.Add("@bw_ext", NpgsqlDbType.Integer);
				command.Parameters.Add("@mode_t2", NpgsqlDbType.Integer);
				command.Parameters.Add("@ver_t2", NpgsqlDbType.Integer);
				command.Parameters.Add("@cell_id", NpgsqlDbType.Integer);
				command.Parameters.Add("@net_id", NpgsqlDbType.Integer);

				foreach (NpgsqlParameter parameter in command.Parameters)
					parameter.Value = DBNull.Value;

				command.Parameters["@related_job"].Value = jobInDb.JobGuid;
				command.Parameters["@satellite"].Value = satellite;
				command.Parameters["@polarity_index"].Value = polarityIndex;

				if (satellite)
				{
					command.Parameters["@lock"].Value = searchResult.Lock;
					command.Parameters["@freq"].Value = searchResult.Freq;
					command.Parameters["@pol"].Value = searchResult.Pol;
					command.Parameters["@sr"].Value = searchResult.SR;
					command.Parameters["@std_type"].Value = searchResult.StdType;
					command.Parameters["@mod_type"].Value = searchResult.ModType;
					command.Parameters["@fec"].Value = (int)searchResult.FEC;
					command.Parameters["@inversion"].Value = searchResult.Inversion;
					command.Parameters["@roll_off"].Value = searchResult.RollOff;
					command.Parameters["@pilot"].Value = searchResult.Pilot;
					command.Parameters["@frame"].Value = searchResult.Frame;
					command.Parameters["@coding_type"].Value = searchResult.CodingType;
					command.Parameters["@stream_type"].Value = searchResult.StreamType;
					command.Parameters["@mis"].Value = searchResult.MIS;
					command.Parameters["@input_stream_ids"].Value = searchResult.IS;
					command.Parameters["@issyi"].Value = searchResult.ISSYI;
					command.Parameters["@npd"].Value = searchResult.NPD;
					command.Parameters["@pls"].Value = searchResult.PLS;
					command.Parameters["@cw"].Value = searchResult.CW;
					command.Parameters["@bitrate"].Value = DBNull.Value;
					command.Parameters["@rf_level"].Value = searchResult.RFLevel;
					command.Parameters["@snr"].Value = searchResult.SNR;
					command.Parameters["@ber"].Value = searchResult.BER;
					command.Parameters["@pre_ber"].Value = searchResult.preBER;
				}
				else
				{
					command.Parameters["@lock"].Value = searchResult2.Lock;
					command.Parameters["@pol"].Value = 0;
					command.Parameters["@freq"].Value = searchResult2.Freq;
					command.Parameters["@sr"].Value = searchResult2.SR;
					command.Parameters["@std_type"].Value = searchResult2.StdType;
					command.Parameters["@mod_type"].Value = searchResult2.ModType;
					command.Parameters["@fec"].Value = searchResult2.FEC;
					command.Parameters["@bw"].Value = searchResult2.BW;
					command.Parameters["@feclp"].Value = searchResult2.FECLP;
					command.Parameters["@transmode"].Value = searchResult2.TransMode;
					command.Parameters["@guard"].Value = searchResult2.Guard;
					command.Parameters["@hierarchy"].Value = searchResult2.Hierarchy;
					command.Parameters["@plp"].Value = searchResult2.PLP;
					command.Parameters["@lid"].Value = searchResult2.LID;
					command.Parameters["@s1type"].Value = searchResult2.S1Type;
					command.Parameters["@payload"].Value = searchResult2.Payload;
					command.Parameters["@bw_ext"].Value = searchResult2.BwExt;
					command.Parameters["@mode_t2"].Value = searchResult2.ModeT2;
					command.Parameters["@ver_t2"].Value = searchResult2.VerT2;
					command.Parameters["@cell_id"].Value = searchResult2.CellID;
					command.Parameters["@net_id"].Value = searchResult2.NetID;
				}

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

		public void UpdateTransponderState(DbBlindscanJob jobInDb, bool satellite, SearchResult searchResult,BlindscanResultState blindscanResultState, SearchResult2 searchResult2)
		{
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				if (satellite)
				{
					command.CommandText =
						"UPDATE skyscraper5_blindscan_search_results\r\n" +
						"SET state = @state, dateupdated = CURRENT_TIMESTAMP, version = version + 1\r\n" +
						"WHERE related_job = @related_job AND satellite = TRUE AND freq = @freq AND pol = @pol";
					command.Parameters.AddWithValue("@freq", NpgsqlDbType.Integer, searchResult.Freq);
					command.Parameters.AddWithValue("@pol", NpgsqlDbType.Integer, searchResult.Pol);
				}
				else
				{
					command.CommandText =
						"UPDATE skyscraper5_blindscan_search_results\r\n" +
						"SET state = @state, dateupdated = CURRENT_TIMESTAMP, version = version + 1\r\n" +
						"WHERE related_job = @related_job AND satellite = FALSE AND freq = @freq AND pol = 0";
					command.Parameters.AddWithValue("@freq", NpgsqlDbType.Integer, searchResult2.Freq);
				}

				command.Parameters.AddWithValue("@related_job", NpgsqlDbType.Uuid, jobInDb.JobGuid);
				command.Parameters.AddWithValue("@state", NpgsqlDbType.Integer, (int)blindscanResultState);
				int i = command.ExecuteNonQuery();
				if (i != 1)
					throw new DBConcurrencyException(String.Format("Somehow I got {0} matches when I expected one.", i));
				command.Dispose();
				connection.Close();
			}
		}

		public void InsertTransponderService(DbBlindscanJob jobInDb, bool resultSatellite, SearchResult resultSr1,SearchResult2 resultSr2, HumanReadableService humanReadableService)
		{
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText =
					"insert into skyscraper5_blindscan_services (related_job, freq, pol, sid, provider_name, service_name, ca_id,service_type)\r\n" +
					"values (@related_job,@freq,@pol,@sid,@provider_name,@service_name,@ca_id,@service_type)";
				command.Parameters.AddWithValue("@related_job", NpgsqlDbType.Uuid, jobInDb.JobGuid);
				if (resultSatellite)
				{
					command.Parameters.AddWithValue("@freq", NpgsqlDbType.Integer, resultSr1.Freq);
					command.Parameters.AddWithValue("@pol", NpgsqlDbType.Integer, resultSr1.Pol);
				}
				else
				{
					command.Parameters.AddWithValue("@freq", NpgsqlDbType.Integer, resultSr2.Freq);
					command.Parameters.AddWithValue("@pol", NpgsqlDbType.Integer, 0);
				}

				command.Parameters.AddWithValue("@sid", NpgsqlDbType.Integer, (int)humanReadableService.ServiceId);
				command.Parameters.AddWithValue("@provider_name", NpgsqlDbType.Text, humanReadableService.ProviderName.Trim((char)0));
				string serviceName = humanReadableService.ServiceName.Trim((char)0).Trim();
				command.Parameters.AddWithValue("@service_name", NpgsqlDbType.Text, serviceName);

				if (humanReadableService.CaId.HasValue)
					command.Parameters.AddWithValue("@ca_id", NpgsqlDbType.Integer, (int)humanReadableService.CaId.Value);
				else
					command.Parameters.AddWithValue("@ca_id", NpgsqlDbType.Integer, DBNull.Value);

				command.Parameters.AddWithValue("@service_type", NpgsqlDbType.Integer, (int)humanReadableService.ServiceType);
				
				command.ExecuteNonQuery();
				command.Dispose();
				connection.Close();
			}
		}

		public bool TestForIncompleteJob()
		{
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText = "SELECT uuid FROM skyscraper5_blindscan_jobs WHERE horizontal_low < 100 OR horizontal_high < 100 OR vertical_low < 100 OR vertical_high < 100";
				NpgsqlDataReader dataReader = command.ExecuteReader();
				bool result = dataReader.Read();
				dataReader.Close();
				command.Dispose();
				connection.Close();
				return result;
			}
		}

		public DbBlindscanJob GetPastBlindscanJob(long offset)
		{
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText = "SELECT * FROM skyscraper5_blindscan_jobs ORDER BY dateadded DESC LIMIT 1 OFFSET @pastindex";
				command.Parameters.AddWithValue("@pastindex", NpgsqlDbType.Integer, (int)offset);
				NpgsqlDataReader dataReader = command.ExecuteReader();
				DbBlindscanJob result = null;
				if (dataReader.Read())
				{
					Guid uuid = dataReader.GetGuid(0);
					PhysicalAddress tuner_mac = (PhysicalAddress)dataReader.GetValue(1);
					int tuner_std = dataReader.GetInt32(2);
					int diseqc_index = dataReader.GetInt32(3);
					int horizontal_low = dataReader.GetInt32(4);
					int horizontal_high = dataReader.GetInt32(5);
					int vertical_low = dataReader.GetInt32(6);
					int vertical_high = dataReader.GetInt32(7);
					DateTime date_added = dataReader.GetDateTime(8);
					DateTime? date_updated = null;
					if (!dataReader.IsDBNull(9))
						date_updated = dataReader.GetDateTime(9);
					int version = dataReader.GetInt32(10);
					double gps_lon = dataReader.GetDouble(11);
					double gps_lat = dataReader.GetDouble(12);
					int sat_position = dataReader.GetInt32(13);
					int serial = dataReader.GetInt32(14);
					string note = null;
					if (!dataReader.IsDBNull(15))
						note = dataReader.GetString(15);
					result = new DbBlindscanJob(uuid, tuner_mac, (STD_TYPE)tuner_std, diseqc_index, new DummyGpsReceiver(true,(float)gps_lat,(float)gps_lon), SatellitePosition.FromChecksum(sat_position));
					result.DateAdded = date_added;
					result.HorizontalHighState = (DbBlindscanJobPolarizationStatus)horizontal_high;
					result.HorizontalLowState = (DbBlindscanJobPolarizationStatus)horizontal_low;
					result.VerticalHighState = (DbBlindscanJobPolarizationStatus)vertical_high;
					result.VerticalLowState = (DbBlindscanJobPolarizationStatus)vertical_low;
				}
				dataReader.Close();
				command.Dispose();
				return result;
			}
		}

		public void DeleteBlindscanJob(Guid guid)
		{
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlTransaction transaction = connection.BeginTransaction();

				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText = "DELETE FROM skyscraper5_blindscan_services WHERE related_job = @uuid";
				command.Parameters.AddWithValue("@uuid", NpgsqlDbType.Uuid, guid);
				int servicesRemoved = command.ExecuteNonQuery();
				command.Dispose();

				command = connection.CreateCommand();
				command.CommandText = "DELETE FROM skyscraper5_blindscan_search_results WHERE related_job = @uuid";
				command.Parameters.AddWithValue("@uuid", NpgsqlDbType.Uuid, guid);
				int searchResultRemoves = command.ExecuteNonQuery();
				command.Dispose();

				command = connection.CreateCommand();
				command.CommandText = "DELETE FROM skyscraper5_blindscan_jobs WHERE uuid = @uuid";
				command.Parameters.AddWithValue("@uuid", NpgsqlDbType.Uuid, guid);
				int searchResultJobs = command.ExecuteNonQuery();
				command.Dispose();

				if (searchResultJobs != 1)
					throw new DataException(String.Format("Expected to delete 1 row, but removed {0}", searchResultJobs));

				transaction.Commit();
				transaction.Dispose();
				connection.Close();
			}
		}

		public void DeleteBlindscanResults(Guid uuid, int pol)
		{
			pol++;
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText = "SELECT freq, pol, state FROM skyscraper5_blindscan_search_results WHERE related_job = @uuid AND polarity_index = @pol";
				command.Parameters.AddWithValue("@uuid", NpgsqlDbType.Uuid, uuid);
				command.Parameters.AddWithValue("@pol", NpgsqlDbType.Integer, pol);
				NpgsqlDataReader reader = command.ExecuteReader();
				List<Tuple<int, int, BlindscanResultState>> toBeDeleted = new List<Tuple<int, int, BlindscanResultState>>();
				while (reader.Read())
				{
					int left = reader.GetInt32(0);
					int mid = reader.GetInt32(1);
					BlindscanResultState right = (BlindscanResultState)reader.GetInt32(2);
					toBeDeleted.Add(new Tuple<int, int, BlindscanResultState>(left, mid, right));
				}
				reader.Close();
				command.Dispose();

				NpgsqlTransaction transaction = connection.BeginTransaction();
				foreach (Tuple<int, int, BlindscanResultState> deleteMe in toBeDeleted)
				{
					switch (deleteMe.Item3)
					{
						case BlindscanResultState.Found:
							//not yet touched, no services to be deleted.
							break;
						case BlindscanResultState.Tuning:
							//failed to touch, no serives to be deleted
							break;
						case BlindscanResultState.Done:
							DeleteBlindscanServices(connection, uuid, deleteMe.Item1, deleteMe.Item2);
							break;
						default:
							throw new NotImplementedException(deleteMe.Item3.ToString());
					}
				}

				command = connection.CreateCommand();
				command.CommandText = "DELETE FROM skyscraper5_blindscan_search_results WHERE related_job = @uuid AND polarity_index = @pol";
				command.Parameters.AddWithValue("@uuid", NpgsqlDbType.Uuid, uuid);
				command.Parameters.AddWithValue("@pol", NpgsqlDbType.Integer, pol);
				command.ExecuteNonQuery();
				command.Dispose();

				SetBlindscanPolarityState(connection, uuid, pol, DbBlindscanJobPolarizationStatus.SELECTED_WAITING);

				transaction.Commit();
				transaction.Dispose();
				connection.Close();
			}
		}

		private void SetBlindscanPolarityState(NpgsqlConnection connection, Guid uuid, int polarityIndex, DbBlindscanJobPolarizationStatus newStatus)
		{
			string updateColumn = null;
			switch (polarityIndex)
			{
				case 1: updateColumn = "horizontal_low"; break;
				case 2: updateColumn = "horizontal_high"; break;
				case 3: updateColumn = "vertical_low"; break;
				case 4: updateColumn = "vertical_high"; break;
				default: throw new ArgumentOutOfRangeException(nameof(polarityIndex));
			}
			NpgsqlCommand command = connection.CreateCommand();
			command.CommandText = String.Format("UPDATE skyscraper5_blindscan_jobs SET {0} = @value, dateupdated = CURRENT_TIMESTAMP, version = version + 1 WHERE uuid = @uuid", updateColumn);
			command.Parameters.AddWithValue("@value", NpgsqlDbType.Integer, (int)newStatus);
			command.Parameters.AddWithValue("@uuid", NpgsqlDbType.Uuid, uuid);
			int result = command.ExecuteNonQuery();
			if (result != 1)
				throw new DataException(String.Format("Expected to update 1 row, but got {0}", result));
			command.Dispose();
		}

		private void DeleteBlindscanServices(NpgsqlConnection connection, Guid uuid, int freq, int pol)
		{
			NpgsqlCommand cmd = connection.CreateCommand();
			cmd.CommandText = "DELETE FROM skyscraper5_blindscan_services WHERE related_job = @uuid AND freq = @freq AND pol = @pol";
			cmd.Parameters.AddWithValue("@uuid", NpgsqlDbType.Uuid, uuid);
			cmd.Parameters.AddWithValue("@freq", NpgsqlDbType.Integer, freq);
			cmd.Parameters.AddWithValue("@pol", NpgsqlDbType.Integer, pol);
			cmd.ExecuteNonQuery();
		}

		public void MoveBlScanResultsToAnotherJob(Guid moveFrom, Guid moveTo, int polarity)
		{
			polarity++;
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				//Services, die bewegt werden müssen finden
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText = "SELECT freq, pol FROM skyscraper5_blindscan_search_results WHERE related_job = @uuid AND polarity_index = @pol";
				command.Parameters.AddWithValue("@uuid", NpgsqlDbType.Uuid, moveFrom);
				command.Parameters.AddWithValue("@pol", NpgsqlDbType.Integer, polarity);
				NpgsqlDataReader reader = command.ExecuteReader();
				List<Tuple<int, int>> toBeMoved = new List<Tuple<int, int>>();
				while (reader.Read())
				{
					int left = reader.GetInt32(0);
					int mid = reader.GetInt32(1);
					toBeMoved.Add(new Tuple<int, int>(left, mid));
				}
				reader.Close();
				command.Dispose();

				NpgsqlTransaction transaction = connection.BeginTransaction();

				//Services bewegen
				int totalServices = 0;
				command = connection.CreateCommand();
				command.CommandText = "UPDATE skyscraper5_blindscan_services SET related_job = @moveTo WHERE freq = @freq AND pol = @pol AND related_job = @moveFrom";
				foreach (Tuple<int, int> moveMe in toBeMoved)
				{
					command.Parameters.Clear();
					command.Parameters.AddWithValue("@moveFrom", NpgsqlDbType.Uuid, moveFrom);
					command.Parameters.AddWithValue("@moveTo", NpgsqlDbType.Uuid, moveTo);
					command.Parameters.AddWithValue("@freq", NpgsqlDbType.Integer, moveMe.Item1);
					command.Parameters.AddWithValue("@pol", NpgsqlDbType.Integer, moveMe.Item2);
					totalServices += command.ExecuteNonQuery();
				}
				command.Dispose();

				//Transponder bewegen
				command = connection.CreateCommand();
				command.CommandText = "UPDATE skyscraper5_blindscan_search_results SET related_job = @moveTo WHERE related_job = @moveFrom AND polarity_index = @polarity_index";
				command.Parameters.AddWithValue("@moveTo", NpgsqlDbType.Uuid, moveTo);
				command.Parameters.AddWithValue("@moveFrom", NpgsqlDbType.Uuid, moveFrom);
				command.Parameters.AddWithValue("@pol", NpgsqlDbType.Integer, polarity);
				command.ExecuteNonQuery();
				command.Dispose();

				SetBlindscanPolarityState(connection, moveFrom, polarity, DbBlindscanJobPolarizationStatus.SELECTED_WAITING);
				SetBlindscanPolarityState(connection, moveTo, polarity, DbBlindscanJobPolarizationStatus.SELECTED_DONE);

				transaction.Commit();
				transaction.Dispose();
				connection.Close();
			}
		}

		public IEnumerable<DbBlindscanJob> GetDbBlindscanJobs()
		{
			using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
			{
				//Services, die bewegt werden müssen finden
				connection.Open();
				NpgsqlCommand command = connection.CreateCommand();
				command.CommandText = "SELECT * FROM skyscraper5_blindscan_jobs ORDER BY dateadded DESC";
				NpgsqlDataReader dataReader = command.ExecuteReader();
				while (dataReader.Read())
				{
					Guid uuid = dataReader.GetGuid("uuid");
					DateTime dateAdded = dataReader.GetDateTime("dateadded");
					DbBlindscanJobPolarizationStatus horizontalLow = (DbBlindscanJobPolarizationStatus)dataReader.GetInt32("horizontal_low");
					DbBlindscanJobPolarizationStatus horizontalHigh = (DbBlindscanJobPolarizationStatus)dataReader.GetInt32("horizontal_high");
					DbBlindscanJobPolarizationStatus verticalLow = (DbBlindscanJobPolarizationStatus)dataReader.GetInt32("vertical_low");
					DbBlindscanJobPolarizationStatus verticalHigh = (DbBlindscanJobPolarizationStatus)dataReader.GetInt32("vertical_high");
					PhysicalAddress tunerMac = (PhysicalAddress)dataReader.GetValue("tuner_mac");
					STD_TYPE tunerStd = (STD_TYPE)dataReader.GetInt32("tuner_std");
					DummyGpsReceiver dgr = null;
					if (!dataReader.IsDBNull("gps_lon"))
					{
						float gpsLon = (float)dataReader.GetDouble("gps_lon");
						float gpsLat = (float)dataReader.GetDouble("gps_lat");
						dgr = new DummyGpsReceiver(true, gpsLat, gpsLon);
					}

					SatellitePosition satPositionObj = null;
					if (!dataReader.IsDBNull("sat_position"))
					{
						int satPosition = dataReader.GetInt32("sat_position");
						satPositionObj = SatellitePosition.FromChecksum(satPosition);
					}
					int diseqcIndex = dataReader.GetInt32("diseqc_index");
					int version = dataReader.GetInt32("version");

					
					DbBlindscanJob child = new DbBlindscanJob(uuid, tunerMac, tunerStd, diseqcIndex, dgr, satPositionObj);
					child.DateAdded = dateAdded;
					child.HorizontalLowState = horizontalLow;
					child.HorizontalHighState = horizontalHigh;
					child.VerticalLowState = verticalLow;
					child.VerticalHighState = verticalHigh;
					yield return child;
				}
				dataReader.Close();
				command.Dispose();
				connection.Close();
			}
		}
	}
}