using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.ServiceModel;
using System.Xml;
using System.Xml.Linq;
using BeWo.Data;
using BeWo.Data.Access;
using BeWo.Data.Entities;
using BeWo.Service.Core;
using BeWo.Service.DCEntityMapper;
using BeWo.Service.ServiceContracts;

using BS.Shared;
using BS.Shared.Core;
using BS.Shared.DataContracts;
using BS.Shared.DataContracts.Compact;
using BS.Shared.Extensions;
using DevExpress.XtraScheduler;
using static System.String;
using Resource = BeWo.Data.Entities.Resource;
using Utils = BeWo.Service.Core.Utils;
using SUtils = BS.Shared.Core.Utils;

namespace BeWo.Service.ServiceImplementations
{
    [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall, ConcurrencyMode = ConcurrencyMode.Single)]
    public class ResourceServiceImp : IResourceService
    {
        public void DeactivateResource(long pOid, long pVersion)
        {
            try
            {
                ServiceLogic.SetActivationType<Resource>(new Dictionary<long, long> { { pOid, pVersion } }, ActivationTypeId.Deleted);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public void DeactivateResources(Dictionary<long, long> pOid2Version)
        {
            try
            {
                ServiceLogic.SetActivationType<Resource>(pOid2Version, ActivationTypeId.Deleted);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public void DeleteBooking(long pOid, long pVersion)
        {
            try
            {
                this.DeleteBookings(new Dictionary<long, long> { { pOid, pVersion } });
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public void DeleteBookings(Dictionary<long, long> pOid2Version)
        {
            try
            {
                var lOriginals = DAOFactory.GenericDAO.LoadByIDs<ResourceBookingSequence>(pOid2Version.Select(e => e.Key));
                lOriginals.DoForEach(or => MapperFactory.BookingSequenceDC_ResourceBookingSequence.ConcurrencyCheck(pOid2Version[or.Oid.Value], or));

                DAOFactory.GenericDAO.Delete(lOriginals);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public void DeleteResource(long pOid, long pVersion)
        {
            try
            {
                this.DeleteResources(new Dictionary<long, long> { { pOid, pVersion } });
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public void DeleteResources(Dictionary<long, long> pOid2Version)
        {
            try
            {
                var lOriginals = DAOFactory.GenericDAO.LoadByIDs<Resource>(pOid2Version.Select(e => e.Key));
                lOriginals.DoForEach(or => MapperFactory.ResourceDC_Resource.ConcurrencyCheck(pOid2Version[or.Oid.Value], or));

                DAOFactory.GenericDAO.Delete(lOriginals);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<BookingSequenceDC> GetAllBookings(DateTime pStartSpan, DateTime pEndSpan)
        {
            try
            {
                var t = DAOFactory.SearchDAO.FindBookings(pStartSpan, pEndSpan);
				//### Kalender
				//ConvertResourceBookingsToResourceAppointments();
                return MapperFactory.BookingSequenceDC_ResourceBookingSequence.MapToNewDCs(t);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<BookingSequenceDC> GetAllBookingsByResource(long pResourceOid, DateTime pStartSpan, DateTime pEndSpan)
        {
            try
            {
                var t = DAOFactory.SearchDAO.FindBookings(pResourceOid, pStartSpan, pEndSpan);
                return MapperFactory.BookingSequenceDC_ResourceBookingSequence.MapToNewDCs(t);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<ResourceDC> GetAllResources()
        {
            try
            {
                return MapperFactory.ResourceDC_Resource.MapToNewDCs(DAOFactory.GenericDAO.GetAllActive<Resource>());
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<long> InsertNewBookings(List<BookingSequenceDC> pBookings)
        {
            try
            {
                var lEntities = MapperFactory.BookingSequenceDC_ResourceBookingSequence.MapToNewEntities(pBookings);
                DAOFactory.GenericDAO.Insert(lEntities);
                return lEntities.Select(e => e.Oid.Value).ToList();
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<BookingSequenceDC> InsertNewBookingSequenceDCs(IEnumerable<BookingSequenceDC> pBookings)
        {
            try
            {
                var lEntities = MapperFactory.BookingSequenceDC_ResourceBookingSequence.MapToNewEntities(pBookings);
                DAOFactory.GenericDAO.Insert(lEntities);
                return MapperFactory.BookingSequenceDC_ResourceBookingSequence.MapToNewDCs(lEntities);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<long> InsertNewResources(List<ResourceDC> pResources)
        {
            try
            {
                List<Resource> lResources = MapperFactory.ResourceDC_Resource.MapToNewEntities(pResources);
                DAOFactory.GenericDAO.Insert(lResources);
                return lResources.Select(r => r.Oid.Value).ToList();
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<long> UpdateBookings(List<BookingSequenceDC> pBookings)
        {
            try
            {
                var lOriginals = DAOFactory.GenericDAO.LoadByIDs<ResourceBookingSequence>(pBookings.Select(b => b.SequenceOid.Value));
                MapperFactory.BookingSequenceDC_ResourceBookingSequence.MergeWithEntitys(pBookings, lOriginals);
                DAOFactory.GenericDAO.Update(lOriginals);
                return lOriginals.Select(b => b.Oid.Value).ToList();
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<BookingSequenceDC> UpdateBookingSequenceDCs(List<BookingSequenceDC> pBookings)
        {
            try
            {
                var lOriginals = DAOFactory.GenericDAO.LoadByIDs<ResourceBookingSequence>(pBookings.Select(b => b.SequenceOid.Value));
                MapperFactory.BookingSequenceDC_ResourceBookingSequence.MergeWithEntitys(pBookings, lOriginals);
                DAOFactory.GenericDAO.Update(lOriginals);
                return MapperFactory.BookingSequenceDC_ResourceBookingSequence.MapToNewDCs(lOriginals);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<ResourceDC> UpdateResourceDCs(List<ResourceDC> pResource)
        {
            try
            {
                var lOriginals = DAOFactory.GenericDAO.LoadByIDs<Resource>(pResource.Select(b => b.ResourceOid.Value));
                MapperFactory.ResourceDC_Resource.MergeWithEntitys(pResource, lOriginals);
                DAOFactory.GenericDAO.Update(lOriginals);
                return MapperFactory.ResourceDC_Resource.MapToNewDCs(lOriginals);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<long> UpdateResources(List<ResourceDC> pResource)
        {
            try
            {
                var lOriginals = DAOFactory.GenericDAO.LoadByIDs<Resource>(pResource.Select(b => b.ResourceOid.Value));
                MapperFactory.ResourceDC_Resource.MergeWithEntitys(pResource, lOriginals);
                DAOFactory.GenericDAO.Update(lOriginals);
                return lOriginals.Select(b => b.Oid.Value).ToList();
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

	    public List<ResourceAppointmentDC> UpdateResourceAppointments(List<ResourceAppointmentDC> pResourceAppointments)
	    {
		    try
		    {
			    var lOriginals = DAOFactory.GenericDAO.LoadByIDs<ResourceAppointment>(pResourceAppointments.Select(b => b.ResourceAppointmentOid.Value));
				MapperFactory.ResourceAppointmentDC_ResourceAppointment.MergeWithEntitys(pResourceAppointments, lOriginals);
				DAOFactory.GenericDAO.Update(lOriginals);
			    return MapperFactory.ResourceAppointmentDC_ResourceAppointment.MapToNewDCs(lOriginals);
		    }
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

		public List<ResourceAppointmentDC> InsertNewResourceAppointments(IEnumerable<ResourceAppointmentDC> pResourceAppointments)
		{
			try
			{
				var lResources = MapperFactory.ResourceAppointmentDC_ResourceAppointment.MapToNewEntities(pResourceAppointments);

				DAOFactory.GenericDAO.Insert(lResources);
				return MapperFactory.ResourceAppointmentDC_ResourceAppointment.MapToNewDCs(lResources);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public void DeleteResourceAppointments(Dictionary<long, long> pOid2Version)
	    {
		    try
		    {
				var lOriginals = DAOFactory.GenericDAO.LoadByIDs<ResourceAppointment>(pOid2Version.Select(e => e.Key));
				lOriginals.DoForEach(or => MapperFactory.ResourceAppointmentDC_ResourceAppointment.ConcurrencyCheck(pOid2Version[or.Oid.Value], or));

				DAOFactory.GenericDAO.Delete(lOriginals);
		    }
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

	    private void ConvertResourceBookingsToResourceAppointments()
	    {
		    try
		    {
				const string selectQuery = "SELECT ResourceBookingSequenceOid, Oid FROM resourcebooking WHERE IsActive = 1 AND IsDeleted = 0";
				var dataSet = DAOFactory.AdoDAO.ExecuteQuery(selectQuery);
				var dataReader = dataSet.CreateDataReader();
			    var rbs2rb = new Dictionary<long, List<long>>();
				var newSchedulerAppointments = new List<SchedulerAppointmentDC>();
				var sequence2booking = new Dictionary<ResourceBookingSequence, List<ResourceBooking>>();
				var allResourceBookings = DAOFactory.GenericDAO.GetAllActive<ResourceBooking>();

				while (dataReader.Read())
			    {
					rbs2rb.AddOrUpdateValueInDictionary((long) dataReader.GetValue(0), new List<long> {(long) dataReader.GetValue(1)});
			    }
			    
			    if (allResourceBookings.Count == 0) return;

				allResourceBookings = allResourceBookings.OrderBy(o => o.Oid).ToList();

			    foreach (var b in allResourceBookings)
			    {
				    if (!sequence2booking.ContainsKey(b.Sequence))
					    sequence2booking.Add(b.Sequence, new List<ResourceBooking> {b});
				    else
					    sequence2booking[b.Sequence].Add(b);
			    }

			    foreach (var kvp in sequence2booking)
			    {
				    var sequence = kvp.Key;
				    var frequencyType = sequence.FrequencyType;

				    foreach (var booking in kvp.Value)
				    {
					    var originator = DAOFactory.SearchDAO.FindEmployeeByFullname(booking.InsUser) ?? booking.Employee;

					    if (booking.Sequence.FrequencyType.Equals(ResourceBookingFrequencyType.MonthlyOnLastDay))
					    {
						    var singleBookings = ConvertType6ResourceAppointment(booking);
							newSchedulerAppointments.AddRange(singleBookings);
						    continue;
					    }

					    var employeeList = new List<Employee2SchedulerAppointmentDC>();
						if(booking.Employee != null)
							employeeList.Add(new Employee2SchedulerAppointmentDC
							{
								Employee = MapperFactory.CompactEmployeeDC_Employee.MapToNewDC(booking.Employee),
								ParticipationAnswer = ParticipationAnswer.Zusage,
								IsPC_CheckedTs = null,
								IsPChanged = false
							});

					    var resourceList = new List<ResourceDC> {MapperFactory.ResourceDC_Resource.MapToNewDC(booking.Sequence.Resource)};

					    var newSchedulerAppointment = new SchedulerAppointmentDC
					    {
						    AllDay = booking.Start.Equals(booking.End),
						    CustomerList = new List<CompactCustomerDC>(),
						    Description = booking.Notice,
						    EmployeeList = employeeList,
						    EndDate = booking.End,
						    StartDate = booking.Start,
						    IsPrivate = false,
							ResourceList = resourceList,
						    Subject = booking.Notice,
						    Originator = MapperFactory.CompactEmployeeDC_Employee.MapToNewDC(originator),
						    Type = 0,
						    FormerBookingSequenceOid = booking.Sequence.Oid
					    };

					    if (kvp.Value.Count > 1 && booking.SequencePosition > 0)
					    {
						    newSchedulerAppointment.Type = booking.IsDeleted ? 4 : 3;
					    }
					    else if(frequencyType > 0)
					    {
						    newSchedulerAppointment.Type = 1;
					    }

						if(!booking.Sequence.FrequencyType.Equals(ResourceBookingFrequencyType.Once))
							newSchedulerAppointment.RecurrenceInfo = CreateRecurrenceInfo(booking).ToXml();

						if (newSchedulerAppointments.FirstOrDefault(f => f.FormerBookingSequenceOid.Equals(sequence.Oid)) != null)
						{
							var x = newSchedulerAppointments.First(f => f.FormerBookingSequenceOid.Equals(sequence.Oid) && f.RecurrenceInfo != null).RecurrenceInfo;

							using (var reader = XmlReader.Create(new StringReader(x)))
							{
								reader.ReadToFollowing("RecurrenceInfo");
								reader.MoveToAttribute("Id");
								var id = reader.Value;

								var doc = XDocument.Load(new StringReader(newSchedulerAppointment.RecurrenceInfo));
								var xElement = doc.Element("RecurrenceInfo");
								if (xElement != null)
								{
									xElement.RemoveAttributes();
									xElement.Add(new XAttribute("Id", id));
									xElement.Add(new XAttribute("Index", booking.SequencePosition));
								}

								newSchedulerAppointment.RecurrenceInfo = doc.ToString();
							}
						}

						newSchedulerAppointments.Add(newSchedulerAppointment);
				    }
			    }

				foreach (var resourcebooking in allResourceBookings)
				{
					resourcebooking.IsActive = ActivationTypeId.Deleted;
					resourcebooking.Sequence.IsActive = ActivationTypeId.Deleted;
				}

				DAOFactory.GenericDAO.Update(allResourceBookings);
				InsertSchedulerAppointments(newSchedulerAppointments);
		    }
			catch (Exception ex)
			{
				throw Utils.CreateBeWoFaultException(ex);
			}
	    }

	    private static RecurrenceInfo CreateRecurrenceInfo(ResourceBooking booking)
	    {
		    var sequence = booking.Sequence;
		    var recInfo = new RecurrenceInfo {Range = RecurrenceRange.EndByDate};
		    DateTime? datum = null;

			// Rekonstruktion der gelöschten Zeiten (der neue Termin wird sonst nicht als gelöscht angezeigt)
			if (booking.Start == null)
			{
				var firstBooking = DAOFactory.SearchDAO.GetFirstResourceBookingFromSequence(sequence.Oid.Value);
				var sequenceStartDate = firstBooking.Start.Value;

				// Täglich
				if (sequence.FrequencyType.Equals(ResourceBookingFrequencyType.Daily))
				{
					datum = sequenceStartDate.AddDays(sequence.RepeatInterval * booking.SequencePosition);
				}

				// Wöchentlich
				if (sequence.FrequencyType.Equals(ResourceBookingFrequencyType.Weekly))
				{
					datum = sequenceStartDate.AddDays(sequenceStartDate.Day + 7 * sequence.RepeatInterval * booking.SequencePosition);
				}

				// Monatlich
				if (sequence.FrequencyType.Equals(ResourceBookingFrequencyType.Monthly))
				{
					datum = sequenceStartDate.AddMonths(sequence.RepeatInterval*booking.SequencePosition);
				}

				// X. Wochentag des Monats
				if (sequence.FrequencyType.Equals(ResourceBookingFrequencyType.MonthlyOnFirstDay))
				{
					datum = sequenceStartDate.AddMonthsDayDependent(sequence.RepeatInterval*booking.SequencePosition, true);
				}

				booking.Start = datum;
				booking.End = booking.Start.Value.AddMinutes((firstBooking.End.Value - firstBooking.Start.Value).TotalMinutes);
			}

		    if (booking.Start != null)
			    recInfo.Start = booking.Start.Value;
		    if (sequence.SequenceEnd != null)
			    recInfo.End = sequence.SequenceEnd.Value;

			if (sequence.RepeatInterval > 1)
				recInfo.Periodicity = sequence.RepeatInterval;

			switch (booking.Sequence.FrequencyType)
			{
				case ResourceBookingFrequencyType.Daily:
					recInfo.OccurrenceCount = ((recInfo.End - recInfo.Start).Days + 1) /
											  booking.Sequence.RepeatInterval;
					recInfo.Type = RecurrenceType.Daily;
					break;
				case ResourceBookingFrequencyType.Weekly:
					recInfo.OccurrenceCount = ((recInfo.End - recInfo.Start).Days / 7 + 1) /
											  booking.Sequence.RepeatInterval;
					recInfo.Type = RecurrenceType.Weekly;
					recInfo.WeekDays = GetWeekDay(recInfo.Start.DayOfWeek.ToString());
					break;
				case ResourceBookingFrequencyType.Monthly:
					recInfo.Type = RecurrenceType.Monthly;
					recInfo.OccurrenceCount = ((recInfo.End - recInfo.Start).Days / 30 + 1) /
											  booking.Sequence.RepeatInterval;
					recInfo.WeekDays = GetWeekDay(recInfo.Start.DayOfWeek.ToString());
					recInfo.DayNumber = recInfo.Start.Day;
					recInfo.WeekOfMonth = WeekOfMonth.None;
					break;
				case ResourceBookingFrequencyType.MonthlyOnFirstDay:
					recInfo.Type = RecurrenceType.Monthly;
					recInfo.OccurrenceCount = ((recInfo.End - recInfo.Start).Days / 30 + 1) /
											  booking.Sequence.RepeatInterval;
					recInfo.WeekDays = GetWeekDay(recInfo.Start.DayOfWeek.ToString());
					recInfo.WeekOfMonth = recInfo.Start.GetWeekOfMonth(DayOfWeek.Sunday);
					break;
			}
		    
		    return recInfo;
	    }

		private static IEnumerable<SchedulerAppointmentDC> ConvertType6ResourceAppointment(ResourceBooking booking)
		{
			var sequence = booking.Sequence;
			if (sequence.Oid == null) return null;

			var firstBooking = DAOFactory.SearchDAO.GetFirstResourceBookingFromSequence(sequence.Oid.Value);

			if (firstBooking.Start == null || firstBooking.End == null || sequence.SequenceEnd == null) return null;

			// X. Letzten Wochentag im Monat berechnen für den gesamten Zeitraum (Typ 3 und 4 beachten, oder nicht?)
			var duration = (firstBooking.End.Value - firstBooking.Start.Value).TotalMinutes;
			var newDates = new List<DateTime>{firstBooking.Start.Value};

			newDates.AddRange(CalculateLastXInMonthDates(DAOFactory.SearchDAO.GetExcludedBookingSequencePositions(sequence.Oid.Value), firstBooking.Start.Value, sequence));

			var employee = MapperFactory.CompactEmployeeDC_Employee.MapToNewDC(booking.Employee);
			var employeeList = new List<Employee2SchedulerAppointmentDC>();
			if (booking.Employee != null)
				employeeList.Add(new Employee2SchedulerAppointmentDC
				{
					Employee = employee,
					ParticipationAnswer = ParticipationAnswer.Zusage,
					IsPC_CheckedTs = null,
					IsPChanged = false
				});

			var resourceList = new List<ResourceDC> { MapperFactory.ResourceDC_Resource.MapToNewDC(booking.Sequence.Resource) };

			return newDates.Select(date => new SchedulerAppointmentDC
			{
				AllDay = false, 
				CustomerList = new List<CompactCustomerDC>(), 
				Description = firstBooking.Notice, 
				EmployeeList = employeeList, 
				EndDate = date.AddMinutes(duration), 
				FormerBookingSequenceOid = firstBooking.Sequence.Oid, 
				IsPrivate = false, 
				Originator = employee, 
				ResourceList = resourceList, 
				StartDate = date, 
				Subject = firstBooking.Notice, 
				Type = 0
			}).ToList();
	    }

		private static IEnumerable<DateTime> CalculateLastXInMonthDates(ICollection<int> excludedBookingSequencePositions, DateTime pSequenceStart, ResourceBookingSequence pSequence)
	    {
			// bearbeitete und gelöschte Termine nicht beachten
			var result = new List<DateTime>();

			var lCurrentPosition = 0;
			var lCurrentSequencePosition = 1;
			var lCurrentStart = pSequenceStart.AddMonthsDayDependent(1, false);

			while (lCurrentStart <= pSequence.SequenceEnd)
			{
				lCurrentPosition++;
				
				if (lCurrentPosition % pSequence.RepeatInterval == 0 && !excludedBookingSequencePositions.Contains(lCurrentSequencePosition))
				{
					result.Add(lCurrentStart);
					lCurrentSequencePosition++;
				}

				lCurrentStart = lCurrentStart.AddMonthsDayDependent(1, false);
			}

			return result;
	    }

		private static WeekDays GetWeekDay(string name)
		{
			switch (name)
			{
				case "Sunday":
					return WeekDays.Sunday;
				case "Monday":
					return WeekDays.Monday;
				case "Tuesday":
					return WeekDays.Thursday;
				case "Wednesday":
					return WeekDays.Wednesday;
				case "Thursday":
					return WeekDays.Thursday;
				case "Friday":
					return WeekDays.Friday;
				case "Saturday":
					return WeekDays.Saturday;
				default:
					return WeekDays.Sunday;
			}
		}

	    public List<ResourceAppointmentDC> GetAllResourceAppointments()
	    {
			try
			{
				var lResources = DAOFactory.GenericDAO.GetAll<ResourceAppointment>();
				return MapperFactory.ResourceAppointmentDC_ResourceAppointment.MapToNewDCs(lResources);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

	    public List<SchedulerAppointmentDC> GetAllSchedulerAppointments()
	    {
		    try
		    {
			    var lSchedulerAppointments = DAOFactory.GenericDAO.GetAll<SchedulerAppointment>();
			    return MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(lSchedulerAppointments);
		    }
		    catch (Exception e)
		    {
			    throw Utils.CreateBeWoFaultException(e);
		    }
	    }

	    public List<SchedulerAppointmentDC> GetAllActiveSchedulerAppointments()
	    {
			try
			{
				var lSchedulerAppointments = DAOFactory.GenericDAO.GetAllActive<SchedulerAppointment>();
				return MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(lSchedulerAppointments);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

	    public void DeleteSchedulerAppointments(Dictionary<long, long> pOid2Version)
	    {
			try
			{
				var lOriginals = DAOFactory.GenericDAO.LoadByIDs<SchedulerAppointment>(pOid2Version.Select(n => n.Key));
				lOriginals.DoForEach(on => MapperFactory.SchedulerAppointmentDCSchedulerAppointment.ConcurrencyCheck(pOid2Version[on.Oid.Value], on));

				DAOFactory.GenericDAO.Delete(lOriginals);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

	    public List<SchedulerAppointmentDC> InsertSchedulerAppointments(IList<SchedulerAppointmentDC> pSchedulerAppointments)
	    {
		    try
		    {
				foreach(var item in pSchedulerAppointments)
				{
					try
					{
						item.EmployeeList.ForEach(each =>
						{
							each.Employee2SchedulerAppointmentOid     = null;
							each.Employee2SchedulerAppointmentVersion = null;
							each.SchedulerAppointmentOid              = null;
							each.IsPChanged                           = false;
							each.IsPC_CheckedTs                       = null;
						});

						var lRelations = MapperFactory.Employee2SchedulerAppointmentDC_Employee2SchedulerAppointment.MapToNewEntities(item.EmployeeList);
						DAOFactory.GenericDAO.Insert(lRelations);
						var neu = MapperFactory.Employee2SchedulerAppointmentDC_Employee2SchedulerAppointment.MapToNewDCs(lRelations);
						item.EmployeeList = neu;
					}
					catch (Exception exception)
					{
						throw Utils.CreateBeWoFaultException(exception);
					}
				}

			    var lAppointments = MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewEntities(pSchedulerAppointments);

				DAOFactory.GenericDAO.Insert(lAppointments);
			    return MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(lAppointments);
		    }
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

	    public List<SchedulerAppointmentDC> UpdateSchedulerAppointments(List<SchedulerAppointmentDC> pSchedulerAppointments)
	    {
		    try
		    {
			    if (pSchedulerAppointments.Any(p => p.SchedulerAppointmentOid == null))
			    {
			        return new List<SchedulerAppointmentDC>();
			    }

			    var lOriginals = DAOFactory.GenericDAO.LoadByIDs<SchedulerAppointment>(pSchedulerAppointments.Select(b => b.SchedulerAppointmentOid.Value));
			    var allegleich = true;

		        var test = pSchedulerAppointments.Where(w => w.SchedulerAppointmentOid.HasValue && lOriginals.Any(a => a.Oid.HasValue &&
		                a.Oid.Value == w.SchedulerAppointmentOid.Value && a.RecurrenceInfo != null &&
		                w.RecurrenceInfo == null))
		            .ToList();

		        if(test.Count > 0)
		        {
		            var originalAppointments = lOriginals.Where(w => w.Oid.HasValue && test.Select(s => s.SchedulerAppointmentOid.Value).Contains(w.Oid.Value)).ToList();

		            foreach(var modifiedException in test)
		            {
		                var original = originalAppointments.FirstOrDefault(f => f.Oid.Value == modifiedException.SchedulerAppointmentOid.Value);

		                if(original == null)
		                {
		                    continue;
		                }

		                if(modifiedException.Type != 4)
		                {
		                    modifiedException.Type = original.Type;
		                }

		                modifiedException.RecurrenceInfo = original.RecurrenceInfo;
		            }
		        }

				// Die geänderten Anwesenheiten updaten und die entfernten löschen
				foreach (var item in pSchedulerAppointments)
				{
					allegleich = false;
					var lNewRelations = MapperFactory.Employee2SchedulerAppointmentDC_Employee2SchedulerAppointment.MapToNewEntities(item.EmployeeList.Where(e2a => e2a.Employee2SchedulerAppointmentOid == null));
					var lOldRelations = MapperFactory.Employee2SchedulerAppointmentDC_Employee2SchedulerAppointment.MapToNewDCs(DAOFactory.GenericDAO.LoadByIDs<Employee2SchedulerAppointment>(item.EmployeeList.Where(w => w.Employee2SchedulerAppointmentOid != null).ToList().Select(s => s.Employee2SchedulerAppointmentOid.Value)));

					var geaenderte = new List<Employee2SchedulerAppointmentDC>();
					foreach (var i in lOldRelations)
					{
						geaenderte.AddRange(item.EmployeeList.Where(o => o.Employee2SchedulerAppointmentOid == i.Employee2SchedulerAppointmentOid &&
							(o.Employee2SchedulerAppointmentVersion != i.Employee2SchedulerAppointmentVersion || o.ParticipationAnswer != i.ParticipationAnswer || o.IsPChanged != i.IsPChanged) &&
							!geaenderte.Contains(o)));
					}

					geaenderte = UpdateEmployee2SchedulerAppointments(geaenderte);
					
					var geloeschte = DAOFactory.SearchDAO.GetRemovedEmp2AppObjectsBySchAppOid(item.SchedulerAppointmentOid.Value).Where(g => !item.EmployeeList.Select(s => s.Employee2SchedulerAppointmentOid).Contains(g.Oid));
					DAOFactory.GenericDAO.Delete(geloeschte);

					DAOFactory.GenericDAO.Insert(lNewRelations);
					var neu = MapperFactory.Employee2SchedulerAppointmentDC_Employee2SchedulerAppointment.MapToNewDCs(lNewRelations);
					var alt = item.EmployeeList.Where(e2a => e2a.Employee2SchedulerAppointmentOid != null && !geaenderte.Contains(e2a)).ToList();
					alt.AddRange(neu);
					alt.AddRange(geaenderte);
					item.EmployeeList = alt;
				}

			    if (allegleich)
			    {
			        return pSchedulerAppointments;
			    }

			    MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MergeWithEntitys(pSchedulerAppointments, lOriginals);
				DAOFactory.GenericDAO.Update(lOriginals);
			    return MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(lOriginals);
		    }
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

	    public List<ResourceAppointmentDC> GetResourceAppointmentsById(IEnumerable<long> pOids)
	    {
		    try
		    {
			    var lAppointments = DAOFactory.GenericDAO.LoadByIDs<ResourceAppointment>(pOids);
			    return MapperFactory.ResourceAppointmentDC_ResourceAppointment.MapToNewDCs(lAppointments);
		    }
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

	    public List<ResourceAppointmentDC> LoadPossibleDuplicates(string pRecurrenceInfo)
	    {
			try
			{
				var possibleDuplicates = DAOFactory.SearchDAO.GetResourceAppointmentExceptionsWithIndexAndId(pRecurrenceInfo);
				return MapperFactory.ResourceAppointmentDC_ResourceAppointment.MapToNewDCs(possibleDuplicates);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

		public List<SchedulerAppointmentDC> GetSchedulerAppointmentsById(IEnumerable<long> pOids)
	    {
		    try
		    {
			    var lSchedulerAppointments = DAOFactory.GenericDAO.LoadByIDs<SchedulerAppointment>(pOids);
			    return MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(lSchedulerAppointments);
		    }
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

        public SchedulerAppointmentDC GetSchedulerAppointmentByid(long oid)
        {
            try
            {
                var lSchedulerAppointments = DAOFactory.GenericDAO.GetByID<SchedulerAppointment>(oid);
                return MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDC(lSchedulerAppointments);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

	    public void DeactivateSchedulerAppointments(Dictionary<long, long> pOid2Version)
	    {
		    try
		    {
			    foreach (var kvp in pOid2Version)
			    {
			        ServiceLogic.SetActivationType<SchedulerAppointment>(new Dictionary<long, long> { { kvp.Key, kvp.Value } }, ActivationTypeId.Deleted);
			    }
		    }
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

		public List<SchedulerAppointmentDC> DeactivateSchedulerAppointmentsForSync(Dictionary<long, long> pOid2Version)
		{
			try
			{
			    /*
                 * Type:
                 * 0: Normal
                 * 1: Pattern
                 * 2: Occurence
                 * 3: ChangedOccurence
                 * 4: DeletedOccurence
                 */
			    
			    var lOriginals = DAOFactory.GenericDAO.LoadByIDs<SchedulerAppointment>(pOid2Version.Keys);

			    if(lOriginals.Count > 0 && lOriginals.Any(a => a.Type == 3 && a.Oid.HasValue && pOid2Version.Keys.Contains(a.Oid.Value)))
			    {
			        // Bearbeitete Serientermine werden auf "gelöscht" gesetzt
			        var originalsToUpdate = lOriginals.Where(w => w.Type == 3 && w.Oid.HasValue && pOid2Version.Keys.Contains(w.Oid.Value)).ToList();
			        foreach(var original in originalsToUpdate)
			        {
			            original.Type = 4;
			        }

                    DAOFactory.GenericDAO.Update(originalsToUpdate);

			        var updatedAppointments = DAOFactory.GenericDAO.LoadByIDs<SchedulerAppointment>(originalsToUpdate.Select(s => s.Oid.Value));

			        foreach(var appointment in updatedAppointments)
			        {
			            // Die auf "gelöscht" gesetzten, bearbeiteten Serientermine werden aus dem Dictionary entfernt
			            if(appointment.Oid.HasValue && appointment.Version.HasValue && pOid2Version.ContainsKey(appointment.Oid.Value))
			            {
			                pOid2Version.Remove(appointment.Oid.Value);
			            }
			        }
			    }

                // Geänderte Serientermine werden anhand der RecurrenceId aus der Datenbank geladen und der Typ auf "gelöscht" gesetzt
                //CB: Nur von Type = 1 also Root prüfen
			    foreach (var org in lOriginals)
			    {
			        if (org.Type == 1)
			        {
			            List<SchedulerAppointment> appointments = new List<SchedulerAppointment>();
			            appointments.Add(org);
			            var recurrenceIds = Utils.ExtractRecurrenceIdFromRecurrenceString(appointments);

			            if (recurrenceIds.Count > 0)
			            {
			                var exceptionsToDelete = DAOFactory.SearchDAO.FindAppointmentsByRecurrenceId(recurrenceIds);

			                exceptionsToDelete.DoForEach(exception =>
			                {
			                    if (exception.Oid != null && exception.Version != null)
			                    {
			                        pOid2Version.AddIfNotIn(new KeyValuePair<long, long>(exception.Oid.Value,
			                            exception.Version.Value));
			                    }
			                });
			            }
			        }
			    }
                

                foreach (var kvp in pOid2Version)
				{
				    ServiceLogic.SetActivationType<SchedulerAppointment>(new Dictionary<long, long> { { kvp.Key, kvp.Value } }, ActivationTypeId.Deleted);
				}

				return GetSchedulerAppointmentsById(pOid2Version.Keys);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

	    public Dictionary<ValueListEntryDC, List<ResourceDC>> GetAllCategories2ResourcesInDictionary()
	    {
		    try
		    {
		        var lOriginals = DAOFactory.GenericDAO.GetAllActive<Resource>();

		        lOriginals = lOriginals.Where(resource =>
		        {
                    return resource.ValueList.All(valueListEntry2Object => valueListEntry2Object.Entry.IsActive.Equals(ActivationTypeId.Active));
		        }).ToList();

                var ressourcen = MapperFactory.ResourceDC_Resource.MapToNewDCs(lOriginals);

				return ressourcen.Select(res => res.ResourceCategory)
								.Distinct()
								.OrderBy(cat => cat.TypeDescription)
								.Select(
									cat =>
										new
										{
											Key = cat,
											Value = ressourcen.Where(res => res.ResourceCategory.Equals(cat)).OrderBy(res => res.Name).ToList()
										}).ToDictionary(a => a.Key, a => a.Value);
		    }
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

        public List<SchedulerAppointmentDC> GetAllOpenAppointmentsForEmployee(long pEmployeeOid)
        {
            try
            {
                var offeneTermine = DAOFactory.SearchDAO.GetAllOpenAppointmentsForEmployee(pEmployeeOid);
                offeneTermine.AddRange(DAOFactory.SearchDAO.GetAllParticipationNotificationsForEmployee(pEmployeeOid));

                return MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(offeneTermine);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }
        
	    public List<Employee2SchedulerAppointmentDC> InsertEmployee2SchedulerAppointments(IEnumerable<Employee2SchedulerAppointmentDC> pEmployee2SchedulerAppointments)
	    {
			try
			{
				var lRelations = MapperFactory.Employee2SchedulerAppointmentDC_Employee2SchedulerAppointment.MapToNewEntities(pEmployee2SchedulerAppointments);

				DAOFactory.GenericDAO.Insert(lRelations);
				return MapperFactory.Employee2SchedulerAppointmentDC_Employee2SchedulerAppointment.MapToNewDCs(lRelations);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

		public List<Employee2SchedulerAppointmentDC> UpdateEmployee2SchedulerAppointments(List<Employee2SchedulerAppointmentDC> pEmployee2SchedulerAppointments)
		{
			try
			{
				
				var lOriginals = DAOFactory.GenericDAO.LoadByIDs<Employee2SchedulerAppointment>(pEmployee2SchedulerAppointments.Select(b => b.Employee2SchedulerAppointmentOid.Value));

				foreach (var item in pEmployee2SchedulerAppointments)
					item.IsPChanged = item.ParticipationAnswer != lOriginals.Find(f => f.Oid == item.Employee2SchedulerAppointmentOid).ParticipationAnswer;

				MapperFactory.Employee2SchedulerAppointmentDC_Employee2SchedulerAppointment.MergeWithEntitys(pEmployee2SchedulerAppointments, lOriginals);
				DAOFactory.GenericDAO.Update(lOriginals);
				return MapperFactory.Employee2SchedulerAppointmentDC_Employee2SchedulerAppointment.MapToNewDCs(lOriginals);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public void DeleteEmployee2SchedulerAppointments(Dictionary<long, long> pOid2Version)
		{
			try
			{
				var lOriginals = DAOFactory.GenericDAO.LoadByIDs<Employee2SchedulerAppointment>(pOid2Version.Select(e => e.Key));
				lOriginals.DoForEach(or => MapperFactory.Employee2SchedulerAppointmentDC_Employee2SchedulerAppointment.ConcurrencyCheck(pOid2Version[or.Oid.Value], or));

				DAOFactory.GenericDAO.Delete(lOriginals);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

	    public List<SchedulerAppointmentDC> GetAllActiveAndNotDeclinedForEmployeeAppointments(long pEmployeeOid)
	    {
			try
			{
				var blubb = DAOFactory.SearchDAO.GetAllActiveAndNotDeclinedForEmployeeAppointments(pEmployeeOid);
				return MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(blubb);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

		public bool OverlappingAppointmentsExist(DateTime start, DateTime end, List<long> employees, List<long> customers, List<long> resources, long originator, long? appointmentOid, string recurrenceId = "", int ocurrenceIndex = 0)
	    {
		    try
		    {
				return DAOFactory.SearchDAO.OverlappingAppointmentsExist(start, end, employees, customers, resources, originator, appointmentOid, recurrenceId, ocurrenceIndex);
		    }
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

		public List<SchedulerAppointmentDC> GetAllActiveAppointmentsForEmployeeInInterval(DateTime start, DateTime end, long pEmployeeOid)
		{
			return GetAllActiveAppointmentsForEmployeeInInterval2(start, end, pEmployeeOid, false);
		}

        // TODO: veraltet
		public List<SchedulerAppointmentDC> GetAllActiveAppointmentsForEmployeeInInterval2(DateTime pStart, DateTime pEnd, long pEmployeeOid, bool pHasRightToSeeAllEmployeeAppointments)
	    {
		    try
			{
				var apps = pHasRightToSeeAllEmployeeAppointments ? 
					DAOFactory.SearchDAO.GetAllActiveAppointmentsInInterval(pStart, pEnd) : 
					DAOFactory.SearchDAO.GetAllActiveAppointmentsForEmployeeInInterval(pStart, pEnd, pEmployeeOid);

                return MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(apps).OrderBy(a => a.StartDate).ToList();
		    }
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
	    }

	    public List<AbsenceTimeDC> GetAllActiveAbsenceTimesInInterval(DateTime pStart, DateTime pEnd, long pEmployeeOid, bool pHasRightToSeeAllEmployeeAppointments)
	    {
		    try
		    {
			    var absenceTimes = DAOFactory.SearchDAO.GetAllAbsenceTimesInIntervalByEmployee(pStart, pEnd, pEmployeeOid, pHasRightToSeeAllEmployeeAppointments);
		        var dcList = MapperFactory.AbsenceTimeDC_AbsenceTime.MapToNewDCs(absenceTimes);
		        foreach (var at in dcList)
		        {
		            if (at.End.HasValue)
		            {
		                at.End = at.End.Value.Date.AddDays(1).AddTicks(-1);
		            }
		        }
                return dcList.OrderBy(a => a.Start).ToList();
		    }
			catch(Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

        public List<SchedulerAppointmentDC> LoadFilteredAppointmentsMitAufgaben(bool pHasRightToSeeAllEmployeeAppointments, long pEmployeeOid, DateTime pIntervalStart, DateTime pIntervalEnd, List<long> pSelectedEmployees, List<long> pSelectedCustomer, List<long> pSelectedResources, bool pEmployeesOnly, bool pCustomersOnly, bool pResourcesOnly, bool pPrivateAppointmentsOnly, bool pOnlyMyAppointments, bool pShowTasks)
        {
            try
            {
                long? ownerOid = null;

                //Keine Auswahl getroffen: Nur meine Termine anzeigen
                if((pSelectedEmployees == null || pSelectedEmployees.Count == 0) && (pSelectedCustomer == null || pSelectedCustomer.Count == 0) && (pSelectedResources == null || pSelectedResources.Count == 0))
                {
                    ownerOid = pEmployeeOid;
                }

                //Benutzer hat sich selber selektiert
                if(pSelectedEmployees != null && pSelectedEmployees.Exists(e => e == pEmployeeOid))
                {
                    ownerOid = pEmployeeOid;
                }

                //Man hat nur Customer und/oder Resourcen ausgewählt, dann dürfen die eigenen nicht angezeigt werden
                if((pSelectedEmployees == null || pSelectedEmployees.Count == 0) &&
                    (pSelectedCustomer != null && pSelectedCustomer.Count > 0 ||
                    pSelectedResources != null && pSelectedResources.Count > 0))
                {
                    ownerOid = null;
                }

                //Wenn man kein Recht hat alle zu sehen, muss immer auf Owner gefiltert werden
                if(!pHasRightToSeeAllEmployeeAppointments)
                {
                    ownerOid = pEmployeeOid;
                }

                if(!(!pHasRightToSeeAllEmployeeAppointments && pSelectedEmployees != null && pSelectedEmployees.Count == 1 && pSelectedEmployees.Contains(pEmployeeOid)))
                {
                    //Rausnehmen, sonst werden Termine nicht gezeigt, bei denen man Owner ist und kein Employee ausgewählt wurde.
                    //Wird nicht rausgenommen, wenn man die Termine anderer Mitarbeiter nicht sehen darf und "nur meine Termine" ausgewählt hat. 
                    //Sonst werden die Filter mit and und nicht mit or verknüpft.
                    pSelectedEmployees?.Remove(pEmployeeOid);
                }

                if(pPrivateAppointmentsOnly && (pSelectedEmployees == null || pSelectedEmployees.Count == 0) && (pSelectedCustomer == null || pSelectedCustomer.Count == 0) && (pSelectedResources == null || pSelectedResources.Count == 0) && !(pSelectedEmployees == null || pSelectedEmployees.Count == 0) &&
                   (pSelectedCustomer != null && pSelectedCustomer.Count > 0 ||
                    pSelectedResources != null && pSelectedResources.Count > 0))
                {
                    ownerOid = pEmployeeOid;
                }

                var appointments = DAOFactory.SearchDAO.LoadFilteredAppointmentsForEmployee(pHasRightToSeeAllEmployeeAppointments, ownerOid, pIntervalStart, pIntervalEnd, pSelectedEmployees, pSelectedCustomer, pSelectedResources, pEmployeesOnly, pCustomersOnly, pResourcesOnly, pPrivateAppointmentsOnly, pOnlyMyAppointments, false).ToList();

                var serientermine = appointments.Where(app => app.RecurrenceInfo != null && app.Type == 1).ToList();

                var all = MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(appointments).OrderBy(a => a.StartDate).ToList();

                var filteredEmployeeOids = new List<long>();
                if(ownerOid.HasValue)
                {
                    filteredEmployeeOids.Add(ownerOid.Value);
                }

                if(pSelectedEmployees != null)
                {
                    foreach(var empOid in pSelectedEmployees)
                    {
                        filteredEmployeeOids.Add(empOid);
                    }
                }

                var result = FilterAppointments(all, pEmployeeOid, filteredEmployeeOids, pSelectedCustomer, pSelectedResources, pCustomersOnly, pResourcesOnly, pShowTasks);

                //Check fehlerhaftes RecurrenceInfos
                foreach(var app in result)
                {
                    if(!IsNullOrEmpty(app.RecurrenceInfo))
                    {
                        if(app.RecurrenceInfo.Contains("WeekDays=\"0\""))
                        {
                            app.RecurrenceInfo = app.RecurrenceInfo.Replace("WeekDays=\"0\"", "WeekDays=\"2\"");
                        }
                    }
                }

                // Ausnahmen immer laden. Entsprechen die Ausnahmen nicht den Filterkriterien, werden sie als gelöscht markiert, um nicht auf dem Client angezeigt zu werden.
                var ausnahmen = MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(DAOFactory.SearchDAO.FindAppointmentsByRecurrenecInfo(result.Where(w => w.Type == 1).Select(s => s.RecurrenceInfo).ToList(), true));
                var demFilterEntsprechendeTermine = FilterAppointments(ausnahmen, pEmployeeOid, filteredEmployeeOids, pSelectedCustomer, pSelectedResources, pCustomersOnly, pResourcesOnly, pShowTasks);

                foreach(var appointment in ausnahmen.Where(w => !demFilterEntsprechendeTermine.Contains(w)))
                {
                    var kosmetisch = new SchedulerAppointmentDC
                    {
                        SchedulerAppointmentOid = appointment.SchedulerAppointmentOid * -1,
                        NewSchedulerAppointmentVersion = 1,
                        Type = 4,
                        RecurrenceInfo = appointment.RecurrenceInfo,
                        EmployeeList = appointment.EmployeeList,
                        CustomerList = appointment.CustomerList,
                        ResourceList = appointment.ResourceList,
                        Originator = appointment.Originator
                    };

                    result.Add(kosmetisch);
                }

                UserDC user;
                if(LoggedInUserOperationContextExt.Current != null && LoggedInUserOperationContextExt.Current.User != null)
                {
                    user = MapperFactory.UserDC_User.MapToNewDC(LoggedInUserOperationContextExt.Current.User);
                }
                else
                {
                    user = MapperFactory.UserDC_User.MapToNewDC(SessionFacade.LoggedInUser);
                }

                if(user != null)
                {
                    result = result.Where(w => BS.Shared.Core.Utils.CheckSchedulerRights(w, SchedulerRightsCheckType.View, user)).ToList();
                }

                // Aufgaben laden
                var oldTasks = DAOFactory.SearchDAO.LoadTasksForConversion(pEmployeeOid);
                var taskAppointments = new List<SchedulerAppointment>();

                foreach(var task in oldTasks)
                {
                    var taskAsAppointment = new SchedulerAppointment
                    {
                        SupportConceptList = new List<SupportConcept> { task.SupportConcept },
                        EmployeeList = new List<Employee2SchedulerAppointment>(),
                        FormerTaskOid = task.Oid,
                        Subject = task.Title,
                        CompletedNotice = task.CompletedNotice,
                        TaskDescription = task.Description,
                        IsActive = task.IsActive,
                        IsTask = true,
                        DueDate = task.DueDate,
                        StartDate = task.CompletedDate.HasValue ? task.DueDate?.GetShortDateTime() : task.InsTs?.GetShortDateTime(),
                        EndDate = task.DueDate?.GetShortDateTime().AddDays(1) ?? DateTime.MaxValue.Date
                    };

                    foreach(var employee in task.EmployeeList)
                    {
                        var rel = new Employee2SchedulerAppointment
                        {
                            Employee = DAOFactory.GenericDAO.LoadByID<Employee>(employee.Oid.Value),
                            ParticipationAnswer = ParticipationAnswer.Offen
                        };

                        taskAsAppointment.EmployeeList.AddIfNotIn(rel);
                    }

                    taskAppointments.Add(taskAsAppointment);
                }

                InsertSchedulerAppointments(MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(taskAppointments));

                var taskAppointmentDCs = MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(DAOFactory.SearchDAO.LoadTaskAppointmentsForEmployee(pEmployeeOid));

                result.AddRangeIfElementsNotIn(taskAppointmentDCs);

                return result;
            }
            catch(Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<SchedulerAppointmentDC> LoadFilteredAppointments(bool pHasRightToSeeAllEmployeeAppointments, long pEmployeeOid, DateTime pIntervalStart, DateTime pIntervalEnd, List<long> pSelectedEmployees, List<long> pSelectedCustomer, List<long> pSelectedResources, bool pEmployeesOnly, bool pCustomersOnly, bool pResourcesOnly, bool pPrivateAppointmentsOnly, bool pOnlyMyAppointments)
        {
            try
            {
                long? ownerOid = null;

                //Keine Auswahl getroffen: Nur meine Termine anzeigen
                if ((pSelectedEmployees == null || pSelectedEmployees.Count == 0) && (pSelectedCustomer == null || pSelectedCustomer.Count == 0) && (pSelectedResources == null || pSelectedResources.Count == 0))
                {
                    ownerOid = pEmployeeOid;
                }
                
                //Benutzer hat sich selber selektiert
                if (pSelectedEmployees != null && pSelectedEmployees.Exists(e => e == pEmployeeOid))
                {
                    ownerOid = pEmployeeOid;
                }
                
                //Man hat nur Customer und/oder Resourcen ausgewählt, dann dürfen die eigenen nicht angezeigt werden
                if ((pSelectedEmployees == null || pSelectedEmployees.Count == 0) &&
                    (pSelectedCustomer != null && pSelectedCustomer.Count > 0 ||
                    pSelectedResources != null && pSelectedResources.Count > 0))
                {
                    ownerOid = null;
                }
                
                //Wenn man kein Recht hat alle zu sehen, muss immer auf Owner gefiltert werden
                if (!pHasRightToSeeAllEmployeeAppointments)
                {
                    ownerOid = pEmployeeOid;
                }

                if(!(!pHasRightToSeeAllEmployeeAppointments && pSelectedEmployees != null && pSelectedEmployees.Count == 1 && pSelectedEmployees.Contains(pEmployeeOid)))
                {
                    //Rausnehmen, sonst werden Termine nicht gezeigt, bei denen man Owner ist und kein Employee ausgewählt wurde.
                    //Wird nicht rausgenommen, wenn man die Termine anderer Mitarbeiter nicht sehen darf und "nur meine Termine" ausgewählt hat. 
                    //Sonst werden die Filter mit and und nicht mit or verknüpft.
                    pSelectedEmployees?.Remove(pEmployeeOid);
                }

                if(pPrivateAppointmentsOnly && (pSelectedEmployees == null || pSelectedEmployees.Count == 0) && (pSelectedCustomer == null || pSelectedCustomer.Count == 0) && (pSelectedResources == null || pSelectedResources.Count == 0) && !(pSelectedEmployees == null || pSelectedEmployees.Count == 0) &&
                   (pSelectedCustomer != null && pSelectedCustomer.Count > 0 ||
                    pSelectedResources != null && pSelectedResources.Count > 0))
                {
                    ownerOid = pEmployeeOid;
                }
                
                var appointments = DAOFactory.SearchDAO.LoadFilteredAppointmentsForEmployee(pHasRightToSeeAllEmployeeAppointments, ownerOid, pIntervalStart, pIntervalEnd, pSelectedEmployees, pSelectedCustomer, pSelectedResources, pEmployeesOnly, pCustomersOnly, pResourcesOnly, pPrivateAppointmentsOnly, pOnlyMyAppointments, false).ToList();

                var all = MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(appointments).OrderBy(a => a.StartDate).ToList();

                var filteredEmployeeOids = new List<long>();
                if (ownerOid.HasValue)
                {
                    filteredEmployeeOids.Add(ownerOid.Value);
                }

                if (pSelectedEmployees != null)
                {
                    foreach (var empOid in pSelectedEmployees)
                    {
                        filteredEmployeeOids.Add(empOid);
                    }
                }

                var result = FilterAppointments(all, pEmployeeOid, filteredEmployeeOids, pSelectedCustomer, pSelectedResources, pCustomersOnly, pResourcesOnly);
                
                //Check fehlerhafte RecurrenceInfos
                foreach (var app in result)
                {
                    if (!IsNullOrEmpty(app.RecurrenceInfo))
                    {
                        if (app.RecurrenceInfo.Contains("WeekDays=\"0\""))
                        {
                            app.RecurrenceInfo = app.RecurrenceInfo.Replace("WeekDays=\"0\"", "WeekDays=\"2\"");
                        }
                    }
                }
                
                // Ausnahmen immer laden. Entsprechen die Ausnahmen nicht den Filterkriterien, werden sie als gelöscht markiert, um nicht auf dem Client angezeigt zu werden.
                var ausnahmen = MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(DAOFactory.SearchDAO.FindAppointmentsByRecurrenecInfo(result.Where(w => w.Type == 1).Select(s => s.RecurrenceInfo).ToList(), true));
                var demFilterEntsprechendeTermine = FilterAppointments(ausnahmen, pEmployeeOid, filteredEmployeeOids, pSelectedCustomer, pSelectedResources, pCustomersOnly, pResourcesOnly);

                foreach(var appointment in ausnahmen.Where(w => !demFilterEntsprechendeTermine.Contains(w)))
                {
                    var kosmetisch = new SchedulerAppointmentDC
                    {
                        SchedulerAppointmentOid = appointment.SchedulerAppointmentOid * -1,
                        NewSchedulerAppointmentVersion = 1,
                        Type = 4,
                        RecurrenceInfo = appointment.RecurrenceInfo,
                        EmployeeList = appointment.EmployeeList,
                        CustomerList = appointment.CustomerList,
                        ResourceList = appointment.ResourceList,
                        Originator = appointment.Originator
                    };

                    result.Add(kosmetisch);
                }

                return result;
            }
            catch(Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        private static List<SchedulerAppointmentDC> FilterAppointments(IEnumerable<SchedulerAppointmentDC> pAppointments, long pEmployeeOid, ICollection<long> pFilteredEmployeeOids, ICollection<long> pSelectedCustomers, ICollection<long> pSelectedResources, bool pCustomersOnly, bool pResourcesOnly, bool pShowTasks = false)
        {
            var result = new List<SchedulerAppointmentDC>();
            
            foreach(var app in pAppointments)
            {
                var add = true;
                if(app.Originator != null && app.Originator.EmployeeOid == pEmployeeOid)
                {
                    if(app.EmployeeList != null && app.EmployeeList.Count > 0)
                    {
                        add = false;
                        foreach(var emp in app.EmployeeList)
                        {
                            if(pFilteredEmployeeOids.Contains(emp.Employee.EmployeeOid))
                            {
                                add = true;
                            }
                        }
                    }
                }

                //Prüfe Klientenfilter
                if(!add)
                {
                    if(app.CustomerList != null && app.CustomerList.Count > 0)
                    {
                        if(pCustomersOnly)
                        {
                            add = true;
                        }
                        else if(pSelectedCustomers != null && pSelectedCustomers.Count > 0)
                        {
                            foreach(var cust in app.CustomerList)
                            {
                                if(pSelectedCustomers.Contains(cust.CustomerOid))
                                {
                                    add = true;
                                }
                            }
                        }
                    }
                }
                
                //Prüfe Ressourcenfilter
                if(!add)
                {
                    if(app.ResourceList != null && app.ResourceList.Count > 0)
                    {
                        if(pResourcesOnly)
                        {
                            add = true;
                        }
                        else if(pSelectedResources != null && pSelectedResources.Count > 0)
                        {
                            foreach(var res in app.ResourceList)
                            {
                                if(pSelectedResources.Contains(res.ResourceOid.Value))
                                {
                                    add = true;
                                }
                            }
                        }
                    }
                }

                if (app.IsTask && !pShowTasks)
                {
                    add = false;
                }

                if(add)
                {
                    result.Add(app);
                }
            }

            return result;
        }

        public List<SchedulerAppointmentDC> GetAllTasksForEmployee(long pEmployeeOid)
        {
            try
            {
                var oldTasks = DAOFactory.SearchDAO.LoadTasksForConversion(pEmployeeOid);
                var taskAppointments = new List<SchedulerAppointment>();

                foreach(var task in oldTasks)
                {
                    var taskAsAppointment = new SchedulerAppointment
                    {
                        SupportConceptList = new List<SupportConcept> {task.SupportConcept},
                        EmployeeList       = new List<Employee2SchedulerAppointment>(),
                        FormerTaskOid      = task.Oid,
                        Subject            = task.Title,
                        CompletedNotice    = task.CompletedNotice,
                        TaskDescription    = task.Description,
                        IsActive           = task.IsActive,
                        IsTask             = true,
                        DueDate            = task.DueDate,
                        StartDate          = task.CompletedDate.HasValue ? task.DueDate?.GetShortDateTime() : task.InsTs?.GetShortDateTime(),
                        EndDate            = task.DueDate?.GetShortDateTime().AddDays(1) ?? DateTime.MaxValue.Date
                    };

                    foreach(var employee in task.EmployeeList)
                    {
                        var rel = new Employee2SchedulerAppointment
                        {
                            Employee = DAOFactory.GenericDAO.LoadByID<Employee>(employee.Oid.Value),
                            ParticipationAnswer = ParticipationAnswer.Offen
                        };
                        
                        taskAsAppointment.EmployeeList.AddIfNotIn(rel);
                    }
                    
                    taskAppointments.Add(taskAsAppointment);
                }
                
                InsertSchedulerAppointments(MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(taskAppointments));
                
                var taskAppointmentDCs = DAOFactory.SearchDAO.LoadTaskAppointmentsForEmployee(pEmployeeOid);

                var monday = DateTime.Today.FirstDateOfWeek(DateTime.Today.GetIso8601WeekOfYear());

                var appointments = DAOFactory.SearchDAO.LoadFilteredAppointmentsForEmployee(false, pEmployeeOid, monday, monday.AddDays(14), new List<long>(), new List<long>(), new List<long>(), false, false, false, false, true, false);

                taskAppointmentDCs.AddRangeIfElementsNotIn(appointments);
                
                return MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(taskAppointmentDCs);
            }
            catch(Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<SchedulerAppointmentDC> GetSchedulerAppointmentTasksForEmployeeBySupportConecpt(long pEmployeeOid, long pSupportConceptOid)
        {
            try
            {
                var taskAppointments = DAOFactory.SearchDAO.GetTasksForEmployeeBySupportConcept(pEmployeeOid, pSupportConceptOid);

                var dataContracts = MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(taskAppointments);
                
                return dataContracts;
            }
            catch(Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<SchedulerAppointmentDC> LoadTasksAndAppointmentsForEmployee(long pEmployeeOid, DateTime pInvertalStart, int pBufferSize, long? pEmployeeAppointmentsOid)
        {
            try
            {
                var oldTasks = DAOFactory.SearchDAO.LoadTasksForConversion(pEmployeeOid);
                var taskAppointments = new List<SchedulerAppointment>();

                foreach (var task in oldTasks)
                {
                    var taskAsAppointment = new SchedulerAppointment
                    {
                        SupportConceptList = new List<SupportConcept> { task.SupportConcept },
                        EmployeeList = new List<Employee2SchedulerAppointment>(),
                        FormerTaskOid = task.Oid,
                        Subject = task.Title,
                        CompletedNotice = task.CompletedNotice,
                        TaskDescription = task.Description,
                        IsActive = task.IsActive,
                        IsTask = true,
                        DueDate = task.DueDate,
                        StartDate = task.CompletedDate.HasValue ? task.DueDate?.GetShortDateTime() : task.InsTs?.GetShortDateTime(),
                        EndDate = task.DueDate?.GetShortDateTime().AddDays(1) ?? DateTime.MaxValue.Date
                    };

                    foreach (var employee in task.EmployeeList)
                    {
                        var rel = new Employee2SchedulerAppointment
                        {
                            Employee = DAOFactory.GenericDAO.LoadByID<Employee>(employee.Oid.Value),
                            ParticipationAnswer = ParticipationAnswer.Offen
                        };

                        taskAsAppointment.EmployeeList.AddIfNotIn(rel);
                    }

                    taskAppointments.Add(taskAsAppointment);
                }

                InsertSchedulerAppointments(MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(taskAppointments));

                var taskAppointmentDCs = DAOFactory.SearchDAO.LoadTaskAppointmentsForEmployee(pEmployeeOid);

                var monday = DateTime.Today.FirstDateOfWeek(pInvertalStart.AddDays(-1 * pBufferSize).GetIso8601WeekOfYear());

                if(!pEmployeeAppointmentsOid.HasValue)
                {
                    pEmployeeAppointmentsOid = pEmployeeOid;
                }

                var appointments = DAOFactory.SearchDAO.LoadFilteredAppointmentsForEmployee(false, pEmployeeAppointmentsOid.Value, monday, monday.AddDays(3 * pBufferSize), new List<long>(), new List<long>(), new List<long>(), false, false, false, false, true, false).ToList();


                UserDC user;
                if (LoggedInUserOperationContextExt.Current != null && LoggedInUserOperationContextExt.Current.User != null)
                {
                    user = MapperFactory.UserDC_User.MapToNewDC(LoggedInUserOperationContextExt.Current.User);
                }
                else
                {
                    user = MapperFactory.UserDC_User.MapToNewDC(SessionFacade.LoggedInUser);
                }

                var loggedInEmployee = DAOFactory.GenericDAO.LoadByID<Employee>(pEmployeeOid);

                if(!user.HasRight(UserRightType.KalenderMitarbeitertermineAnsehen))
                {
                    var appointments2remove = appointments.Where(appointment => appointment.EmployeeList.Count > 0 && appointment.EmployeeList.Any(a => !a.Employee.Equals(loggedInEmployee))).ToList();
                    appointments = appointments.Except(appointments2remove).ToList();
                }

                // TODO: Testen!
                if(!user.HasRight(UserRightType.KalenderKliententermineAlleAnsehen))
                {
                    var ownCustomers = loggedInEmployee.Employee2CustomerList.Select(s => s.Customer).ToList();
                    var appointmentsWithOtherCustomers = appointments.Where(w => w.CustomerList.Any(a => !ownCustomers.Contains(a))).ToList();

                    appointments = appointments.Except(appointmentsWithOtherCustomers).ToList();
                }

                if(!user.HasRight(UserRightType.KalenderRessourcentermineAnsehen))
                {
                    var appsToRemove = appointments.Where(appointment => appointment.ResourceList.Any()).ToList();
                    appointments = appointments.Except(appsToRemove).ToList();
                }


                var nullerIndex = new List<SchedulerAppointment>();

                var recurringAppointments = appointments.Where(app => app.RecurrenceInfo != null);
                recurringAppointments.DoForEach(app =>
                {
                    var index = Utils.ExtractIndexFromRecurrenceInfo(app.RecurrenceInfo);

                    if(index == 0)
                    {
                        nullerIndex.Add(app);
                    }
                });

                nullerIndex.DoForEach(app =>
                {
                    var id = Utils.ExtractIdFromRecurrenceInfo(app.RecurrenceInfo);

                    if(app.Type == (int) AppointmentType.ChangedOccurrence)
                    {
                        var toRemove = appointments.Find(f => f.RecurrenceInfo != null && f.RecurrenceInfo.Contains(id) && !f.RecurrenceInfo.Contains("Index") && f.Type == (int) AppointmentType.Pattern);
                        appointments.Remove(toRemove);
                    }
                });

                taskAppointmentDCs.AddRangeIfElementsNotIn(appointments);

                return MapperFactory.SchedulerAppointmentDCSchedulerAppointment.MapToNewDCs(taskAppointmentDCs);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public void InsertTestAppointments(long pEmployeeOid)
        {
            try
            {
                CreateTestAppointmentsForEmployee(pEmployeeOid);
            }
            catch(Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        private static void CreateTestAppointmentsForEmployee(long pEmployeeOid)
        {
            #if DEBUG
            var employee = DAOFactory.GenericDAO.LoadByID<Employee>(pEmployeeOid);
            var employeesWithoutEmployee = DAOFactory.GenericDAO.GetAllActive<Employee>().Where(emp => !emp.Equals(employee)).ToList();
            var customers = DAOFactory.GenericDAO.GetAllActive<Customer>();
            var ownCustomers = employee.Employee2CustomerList.Select(e2c => e2c.Customer).ToList();
            var resources = DAOFactory.GenericDAO.GetAllActive<Resource>();

            var secondEmployee = employeesWithoutEmployee.FirstOrDefault() ?? employee;
            var fiveOfSecondEmployeesCustomers = secondEmployee.Employee2CustomerList.Select(e2c => e2c.Customer).TakeWhile((t, j) => j != 5).ToList();

            var fiveOfMyOwnCustomers = ownCustomers.TakeWhile((t, i) => i != 5).ToList();
            var fiveCustomers = customers.TakeWhile((t, i) => i != 5).ToList();
            var fiveResources = resources.TakeWhile((t, i) => i != 3).ToList();

            var employeeListIncludingLoggedInEmployee1 = employeesWithoutEmployee.TakeWhile((t, i) => i != 4).Select(t => new Employee2SchedulerAppointment(t)).ToList();
            employeeListIncludingLoggedInEmployee1.Add(new Employee2SchedulerAppointment(employee));

            var employeeListIncludingLoggedInEmployee2 = employeesWithoutEmployee.TakeWhile((t, i) => i != 4).Select(t => new Employee2SchedulerAppointment(t)).ToList();
            employeeListIncludingLoggedInEmployee2.Add(new Employee2SchedulerAppointment(employee));

            var employeeListIncludingLoggedInEmployee3 = employeesWithoutEmployee.TakeWhile((t, i) => i != 4).Select(t => new Employee2SchedulerAppointment(t)).ToList();
            employeeListIncludingLoggedInEmployee3.Add(new Employee2SchedulerAppointment(employee));

            var employeeListIncludingLoggedInEmployee4 = employeesWithoutEmployee.TakeWhile((t, i) => i != 4).Select(t => new Employee2SchedulerAppointment(t)).ToList();
            employeeListIncludingLoggedInEmployee4.Add(new Employee2SchedulerAppointment(employee));

            var employeeListIncludingLoggedInEmployee5 = employeesWithoutEmployee.TakeWhile((t, i) => i != 4).Select(t => new Employee2SchedulerAppointment(t)).ToList();
            employeeListIncludingLoggedInEmployee5.Add(new Employee2SchedulerAppointment(employee));

            var employeeListIncludingLoggedInEmployee6 = employeesWithoutEmployee.TakeWhile((t, i) => i != 4).Select(t => new Employee2SchedulerAppointment(t)).ToList();
            employeeListIncludingLoggedInEmployee6.Add(new Employee2SchedulerAppointment(employee));

            var employeeListIncludingLoggedInEmployee7 = employeesWithoutEmployee.TakeWhile((t, i) => i != 4).Select(t => new Employee2SchedulerAppointment(t)).ToList();
            employeeListIncludingLoggedInEmployee7.Add(new Employee2SchedulerAppointment(employee));

            var employeeListIncludingLoggedInEmployee8 = employeesWithoutEmployee.TakeWhile((t, i) => i != 4).Select(t => new Employee2SchedulerAppointment(t)).ToList();
            employeeListIncludingLoggedInEmployee8.Add(new Employee2SchedulerAppointment(employee));

            var monday = DateTime.Today.FirstDateOfWeek(DateTime.Today.GetIso8601WeekOfYear());
            var tuesday = monday.AddDays(1);
            var wednesday = monday.AddDays(2);
            var thursday = monday.AddDays(3);
            var friday = monday.AddDays(4);
            var saturday = monday.AddDays(5);
            var sunday = monday.AddDays(6);

            //Originator ist angemeldeten Mitarbeiter
            GenerateAppointments(monday, false, employee, fiveCustomers, fiveOfMyOwnCustomers, fiveResources, employeesWithoutEmployee.TakeWhile((t, i) => i != 5).Select(t => new Employee2SchedulerAppointment(t)).ToList(), null);
            
            //Termin von anderem Mitarbeiter
            GenerateAppointments(tuesday, false, secondEmployee, fiveCustomers, fiveOfMyOwnCustomers, fiveResources, employeeListIncludingLoggedInEmployee1, null);
            
            //Originator ist angemeldeter Mitarbeiter und in Liste
            GenerateAppointments(wednesday, false, employee, fiveCustomers, fiveOfMyOwnCustomers, fiveResources, employeeListIncludingLoggedInEmployee2, null);
            
            //Originator ist nicht angemeldeter Mitarbeiter und der ist auch nicht in der Liste
            GenerateAppointments(thursday, false, secondEmployee, fiveCustomers, fiveOfSecondEmployeesCustomers, fiveResources, employeesWithoutEmployee.TakeWhile((t, i) => i != 5).Select(t => new Employee2SchedulerAppointment(t)).ToList(), null);
            
            //Private Termine
            GenerateAppointments(friday, true, employee, fiveCustomers, fiveOfMyOwnCustomers, fiveResources, employeesWithoutEmployee.TakeWhile((t, i) => i != 5).Select(t => new Employee2SchedulerAppointment(t)).ToList(), null);
            GenerateAppointments(saturday, true, secondEmployee, fiveCustomers, fiveOfSecondEmployeesCustomers, fiveResources, employeesWithoutEmployee.TakeWhile((t, i) => i != 5).Select(t => new Employee2SchedulerAppointment(t)).ToList(), null);
            GenerateAppointments(sunday, true, secondEmployee, fiveCustomers, fiveOfSecondEmployeesCustomers, fiveResources, employeeListIncludingLoggedInEmployee3, null);
            GenerateAppointments(friday.AddHours(12), true, employee, fiveCustomers, fiveOfMyOwnCustomers, fiveResources, employeeListIncludingLoggedInEmployee4, null);


            //AllDay-Termine ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
            var mon = monday.AddDays(7);
            var tue = tuesday.AddDays(7);
            var wed = wednesday.AddDays(7);
            var thu = thursday.AddDays(7);
            var fri = friday.AddDays(7);
            var sat = saturday.AddDays(7);
            var sun = sunday.AddDays(7);

            //Originator ist angemeldeten Mitarbeiter
            GenerateAppointments(mon, false, employee, fiveCustomers, fiveOfMyOwnCustomers, fiveResources, employeesWithoutEmployee.TakeWhile((t, i) => i != 5).Select(t => new Employee2SchedulerAppointment(t)).ToList(), null, true);

            //Termin von anderem Mitarbeiter
            GenerateAppointments(tue, false, secondEmployee, fiveCustomers, fiveOfMyOwnCustomers, fiveResources, employeeListIncludingLoggedInEmployee5, null, true);

            //Originator ist angemeldeter Mitarbeiter und in Liste
            GenerateAppointments(wed, false, employee, fiveCustomers, fiveOfMyOwnCustomers, fiveResources, employeeListIncludingLoggedInEmployee6, null, true);

            //Originator ist nicht angemeldeter Mitarbeiter und der ist auch nicht in der Liste
            GenerateAppointments(thu, false, secondEmployee, fiveCustomers, fiveOfSecondEmployeesCustomers, fiveResources, employeesWithoutEmployee.TakeWhile((t, i) => i != 5).Select(t => new Employee2SchedulerAppointment(t)).ToList(), null, true);


            //Private Termine
            GenerateAppointments(fri, true, employee, fiveCustomers, fiveOfMyOwnCustomers, fiveResources, employeesWithoutEmployee.TakeWhile((t, i) => i != 5).Select(t => new Employee2SchedulerAppointment(t)).ToList(), null, true);
            GenerateAppointments(sat, true, secondEmployee, fiveCustomers, fiveOfSecondEmployeesCustomers, fiveResources, employeesWithoutEmployee.TakeWhile((t, i) => i != 5).Select(t => new Employee2SchedulerAppointment(t)).ToList(), null, true);
            GenerateAppointments(sun, true, secondEmployee, fiveCustomers, fiveOfSecondEmployeesCustomers, fiveResources, employeeListIncludingLoggedInEmployee7, null, true);
            GenerateAppointments(fri.AddHours(12), true, employee, fiveCustomers, fiveOfMyOwnCustomers, fiveResources, employeeListIncludingLoggedInEmployee8, null, true);
            // --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

            var ttttttt1 = employeeListIncludingLoggedInEmployee1.Select(s => s.Oid).ToList();
            var ttttttt2 = employeeListIncludingLoggedInEmployee2.Select(s => s.Oid).ToList();
            var ttttttt3 = employeeListIncludingLoggedInEmployee3.Select(s => s.Oid).ToList();
            var ttttttt4 = employeeListIncludingLoggedInEmployee4.Select(s => s.Oid).ToList();
            var ttttttt5 = employeeListIncludingLoggedInEmployee5.Select(s => s.Oid).ToList();
            var ttttttt6 = employeeListIncludingLoggedInEmployee6.Select(s => s.Oid).ToList();
            var ttttttt7 = employeeListIncludingLoggedInEmployee7.Select(s => s.Oid).ToList();
            var ttttttt8 = employeeListIncludingLoggedInEmployee8.Select(s => s.Oid).ToList();

            var mo = mon.AddDays(7);
            var tu = tue.AddDays(7);

            // Tägliche Termine
            var everyThirdMondayNoEnd = GenerateTestAppointment(false, false, mo.AddHours(9), mo.AddHours(10), AppointmentType.Pattern, "Täglich, alle 3 Tage. Endlos", employee);
            everyThirdMondayNoEnd.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Daily, 0, 0, mo.AddHours(9), null, 1);
            DAOFactory.GenericDAO.Insert(everyThirdMondayNoEnd);

            var everyWeekdayNoEnd = GenerateTestAppointment(false, false, mo.AddHours(10), mo.AddHours(11), AppointmentType.Pattern, "Wochentäglich. Endlos", employee);
            everyWeekdayNoEnd.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Daily, 0, 1, mo.AddHours(10), null, 1);
            DAOFactory.GenericDAO.Insert(everyWeekdayNoEnd);

            var everyThirdMondayEndsAfter12Times = GenerateTestAppointment(false, false, mo.AddHours(11), mo.AddHours(12), AppointmentType.Pattern, "Täglich, alle 3 Tage. Endet nach 12 Terminen", employee);
            everyThirdMondayEndsAfter12Times.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Daily, 1, 0, mo.AddHours(11), null, 1);
            DAOFactory.GenericDAO.Insert(everyThirdMondayEndsAfter12Times);

            var everyWorkdayEndsAfter12Times = GenerateTestAppointment(false, false, mo.AddHours(12), mo.AddHours(13), AppointmentType.Pattern, "Wochentäglich. Endet nach 12 Terminen", employee);
            everyWorkdayEndsAfter12Times.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Daily, 1, 1, mo.AddHours(12), null, 1);
            DAOFactory.GenericDAO.Insert(everyWorkdayEndsAfter12Times);

            var everyWorkdayEndsOnSpecificDate = GenerateTestAppointment(false, false, mo.AddHours(13), mo.AddHours(14), AppointmentType.Pattern, $"Wochentäglich. Endet am {mo.AddHours(13).AddDays(11):dd.MM.yyyy}", employee);
            everyWorkdayEndsOnSpecificDate.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Daily, 2, 1, mo.AddHours(13), everyWorkdayEndsOnSpecificDate.StartDate.Value.AddDays(11), 0);
            DAOFactory.GenericDAO.Insert(everyWorkdayEndsOnSpecificDate);

            var everyThreeDaysEndsOnSpecificDate = GenerateTestAppointment(false, false, mo.AddHours(15), mo.AddHours(16), AppointmentType.Pattern, "Jeden dritten Tag. Endet 11 Tage nach Beginn", employee);
            everyThreeDaysEndsOnSpecificDate.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Daily, 2, 0, mo.AddHours(15), mo.AddHours(15).AddDays(11), 0);
            DAOFactory.GenericDAO.Insert(everyThreeDaysEndsOnSpecificDate);

            // Wöchentliche Termine
            var everyThirdWeekMondayAndTuesday = GenerateTestAppointment(false, false, mo.AddHours(16), mo.AddHours(17), AppointmentType.Pattern, "Jede dritte Woche Montags und Dienstags. Endlos", employee);
            everyThirdWeekMondayAndTuesday.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Weekly, 0, 0, mo.AddHours(16), null, 1);
            DAOFactory.GenericDAO.Insert(everyThirdWeekMondayAndTuesday);

            var everySecondWeekMondaysAndTuesdays = GenerateTestAppointment(false, false, mo.AddHours(18), mo.AddHours(19), AppointmentType.Pattern, "Jede zweite Woche am Montag und Dienstag. Endet nach 17 Terminen", employee);
            everySecondWeekMondaysAndTuesdays.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Weekly, 0, 1, mo.AddHours(18), null, 17);
            DAOFactory.GenericDAO.Insert(everySecondWeekMondaysAndTuesdays);

            var everyWeekMondaysAndTuesdays = GenerateTestAppointment(false, false, mo.AddHours(19), mo.AddHours(20), AppointmentType.Pattern, $"Jede Woche am Montag und Dienstag. Endet am {mo.AddHours(19).AddDays(20):dd.MM.yyyy}", employee);
            everyWeekMondaysAndTuesdays.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Weekly, 1, 1, mo.AddHours(19), mo.AddHours(19).AddDays(20), 1);
            DAOFactory.GenericDAO.Insert(everyWeekMondaysAndTuesdays);

            // Monatliche Termine
            var m1 = GenerateTestAppointment(false, false, tu.AddHours(8), tu.AddHours(9), AppointmentType.Pattern, $"Am {tu.FirstDateOfWeek(tu.GetIso8601WeekOfYear())} jedes 2. Monats. Endlos", employee);
            m1.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Monthly, 0, 0, tu.AddHours(8), null, 1);
            DAOFactory.GenericDAO.Insert(m1);

            var m2 = GenerateTestAppointment(false, false, tu.AddHours(9), tu.AddHours(10), AppointmentType.Pattern, "Jeden dritten Mittwoch jedes 2. Monats. Endlos", employee);
            m2.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Monthly, 0, 1, tu.AddHours(9), null, 1);
            DAOFactory.GenericDAO.Insert(m2);

            var m3 = GenerateTestAppointment(false, false, tu.AddHours(10), tu.AddHours(11), AppointmentType.Pattern, "Jeden 3. jedes 3. Monats. Endet nach 3 Terminen", employee);
            m3.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Monthly, 1, 0, tu.AddHours(10), null, 3);
            DAOFactory.GenericDAO.Insert(m3);

            var m4 = GenerateTestAppointment(false, false, tu.AddHours(11), tu.AddHours(12), AppointmentType.Pattern, "Jeden 3. Montag jedes 3. Monats. Endet nach 3 Terminen", employee);
            m4.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Monthly, 1, 1, tu.AddHours(11), null, 3);
            DAOFactory.GenericDAO.Insert(m4);

            var m5 = GenerateTestAppointment(false, false, tu.AddHours(12), tu.AddHours(13), AppointmentType.Pattern, $"Am 17. jedes 3. Monats. Endet am {tu.AddMonths(6):dd.MM.yyyy}", employee);
            m5.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Monthly, 2, 0, tu.AddHours(12), tu.AddHours(12).AddMonths(6), 1);
            DAOFactory.GenericDAO.Insert(m5);

            var m6 = GenerateTestAppointment(false, false, tu.AddHours(13), tu.AddHours(14), AppointmentType.Pattern, $"Jeden 3. Montag jedes Monats. Endet am {tu.AddMonths(4):dd.MM.yyyy}", employee);
            m6.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Monthly, 2, 1, tu.AddHours(13), tu.AddHours(13).AddMonths(4), 1);
            DAOFactory.GenericDAO.Insert(m6);

            // Jährliche Termine

            var y1 = GenerateTestAppointment(false, false, tu.AddHours(14), tu.AddHours(16), AppointmentType.Pattern, $"Jährlich am {tu:dd.MM.}. Endlos", employee);
            y1.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Yearly, 0, 0, tu.AddHours(14), null, 1);
            DAOFactory.GenericDAO.Insert(y1);


            var y2 = GenerateTestAppointment(false, false, tu.AddHours(16), tu.AddHours(17), AppointmentType.Pattern, $"Jährlich am 3. Montag im {tu:MMMM}. Endlos", employee);
            y2.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Yearly, 0, 1, tu.AddHours(16), null, 1);
            DAOFactory.GenericDAO.Insert(y2);

            var y3 = GenerateTestAppointment(false, false, tu.AddHours(17), tu.AddHours(18), AppointmentType.Pattern, $"Jährlich jeden {tu.Day}. im {mo.Month:MMMM}. Endet nach 3 Terminen", employee);
            y3.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Yearly, 1, 0, tu.AddHours(17), null, 3);
            DAOFactory.GenericDAO.Insert(y3);

            var y4 = GenerateTestAppointment(false, false, tu.AddHours(18), tu.AddHours(19), AppointmentType.Pattern, $"Jährlich jeden 3. Montag im {mo.Month:MMMM}. Endet nach 3 Terminen", employee);
            y4.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Yearly, 1, 1, tu.AddHours(18), null, 3);
            DAOFactory.GenericDAO.Insert(y4);

            var y5 = GenerateTestAppointment(false, false, tu.AddHours(19), tu.AddHours(20), AppointmentType.Pattern, $"Jährlich am x. [Monat]. Endet am xx.xx.xxxx (1 Jahr später)", employee);
            y5.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Yearly, 2, 0, tu.AddHours(19), tu.AddHours(19).AddYears(1), 3);
            DAOFactory.GenericDAO.Insert(y5);

            var y6 = GenerateTestAppointment(false, false, tu.AddHours(20), tu.AddHours(21), AppointmentType.Pattern, $"Jährlich jeden 3. Mittwoch im {tu:MMMM}. Endet am {tu.AddHours(20).AddYears(1):dd.MM.yyyy}", employee);
            y6.RecurrenceInfo = GenerateRecurrenceInfo(RecurrenceType.Yearly, 2, 1, tu.AddHours(20), tu.AddHours(20).AddYears(1), 3);
            DAOFactory.GenericDAO.Insert(y6);
            // --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
#endif
        }

        private static string CreateRandomLocationName()
        {
            var random = new Random(Convert.ToInt32(DateTime.Now.Ticks.ToString().Substring(0, 9))).Next();
            var location = "";

            if(random % 2 == 0)
            {
                location = "Duisburg";
            }
            else if(random % 3 == 0)
            {
                location = "Düsseldorf";
            }
            else if (random % 5 == 0)
            {
                location = "Köln";
            }

            return location;
        }

        private static void GenerateAppointments(DateTime pFirstDate, bool pIsPrivate, Employee pEmployee, IList<Customer> pCustomerList, IList<Customer> pOwnCustomers, IList<Resource> pResourceList, IList<Employee2SchedulerAppointment> pEmployees, string pRecurrenceInfo, bool pIsAllDay = false)
        {
            const int startHours = 6;

            for(var i = 0; i < 12; i++)
            {
                var appointment = GenerateTestAppointment(
                    pIsPrivate, 
                    new List<Customer>(), 
                    new List<Resource>(), 
                    new List<Employee2SchedulerAppointment>(), 
                    pIsAllDay, 
                    pIsAllDay ? pFirstDate.GetShortDateTime() : pFirstDate.AddHours(startHours + i), 
                    pIsAllDay ? pFirstDate.GetShortDateTime().AddDays(1) : pFirstDate.AddHours(startHours + i + 1), 
                    AppointmentType.Normal, 
                    $"Testtermin von {pEmployee.Person.FirstNameLastName}", 
                    pEmployee);

                switch (i)
                {
                    case 1:
                        appointment.CustomerList = pCustomerList;
                        appointment.Subject += " mit Klienten";
                        break;
                    case 2:
                        appointment.Subject += " mit Mitarbeitern";
                        break;
                    case 3:
                        appointment.ResourceList = pResourceList;
                        appointment.Subject += " mit Ressourcen";
                        break;
                    case 4:
                        appointment.CustomerList = pCustomerList;
                        appointment.Subject += " mit Klienten und Mitarbeitern";
                        break;
                    case 5:
                        appointment.CustomerList = pCustomerList;
                        appointment.ResourceList = pResourceList;
                        appointment.Subject += " mit Klienten und Ressourcen";
                        break;
                    case 6:
                        appointment.CustomerList = pCustomerList;
                        appointment.ResourceList = pResourceList;
                        appointment.Subject += " mit Klienten, Mitarbeitern und Ressourcen";
                        break;
                    case 7:
                        appointment.ResourceList = pResourceList;
                        appointment.Subject += " mit Mitarbeitern und Ressourcen";
                        break;
                    case 8:
                        appointment.CustomerList = pOwnCustomers;
                        appointment.Subject += " mit eigenen Klienten";
                        break;
                    case 9:
                        appointment.CustomerList = pOwnCustomers;
                        appointment.Subject += " mit eigenen Klienten und Mitarbeitern";
                        break;
                    case 10:
                        appointment.CustomerList = pOwnCustomers;
                        appointment.ResourceList = pResourceList;
                        appointment.Subject += " mit eigenen Klienten und Ressourcen";
                        break;
                    case 11:
                        appointment.CustomerList = pOwnCustomers;
                        appointment.ResourceList = pResourceList;
                        appointment.Subject += " mit eigenen Klienten, Mitarbeitern und Ressourcen";
                        break;
                }

                appointment.Subject = (pIsPrivate ? "Privat: " : "") + appointment.Subject;

                if (pEmployees != null)
                {
                    DAOFactory.GenericDAO.Insert(pEmployees);
                    pEmployees = DAOFactory.GenericDAO.LoadByIDs<Employee2SchedulerAppointment>(pEmployees.Where(w => w.Oid.HasValue).Select(s => s.Oid.Value));
                    appointment.EmployeeList = pEmployees;
                }

                DAOFactory.GenericDAO.Insert(appointment);

                if(pEmployees != null)
                {
                    foreach(var abc in appointment.EmployeeList)
                    {
                        abc.SchedulerAppointmentOid = appointment.Oid;
                    }

                    DAOFactory.GenericDAO.Update(appointment.EmployeeList);
                }
            }
        }

        private static string GenerateRecurrenceInfo(RecurrenceType pType, int pRecurrenceMode, int pRecurrenceOption, DateTime pStartDate, DateTime? pRecurrenceEndDate, int pOccurrenceCount)
        {
            // pRecurrenceOption ist z.B. bei täglich "Alle x Tage" oder "Jeden Arbeitstag"
            var monday = pStartDate.FirstDateOfWeek(pStartDate.GetIso8601WeekOfYear());

            // XML für die RecurrenceInfo bauen
            var ri = new RecurrenceInfo
            {
                Start = pStartDate,
                Type = pType
            };

            switch(pRecurrenceMode)
            {
                case 0: // Ohne Enddatum
                    ri.Range = RecurrenceRange.NoEndDate;
                    ri.Periodicity = 3;

                    switch (pType)
                    {
                        case RecurrenceType.Daily:
                            ri.Start = monday;

                            if(pRecurrenceOption == 1) // Jeden Arbeitstag
                            {
                                ri.WeekDays = WeekDays.WorkDays;
                            }
                            break;
                        case RecurrenceType.Weekly:
                            ri.WeekDays = WeekDays.Monday | WeekDays.Tuesday;
                            break;
                        case RecurrenceType.Monthly:
                            ri.WeekDays = ri.Start.GetSchedulerWeekDays();
                            ri.Periodicity = 2;
                            ri.WeekOfMonth = pRecurrenceOption == 0 ? 0 : WeekOfMonth.Third;

                            if(pRecurrenceOption == 1) // Am x. Wochentag jedes y.
                            {
                                var date = DateTimeUtils.GetNthDayOfWeekInMonth(ri.Start, 3, DayOfWeek.Monday);
                                ri.Start = date;
                                ri.WeekDays = date.GetSchedulerWeekDays();
                            }
                            else // Am x. jedes y. Monats
                            {
                                ri.DayNumber = monday.Day;
                            }

                            break;
                        case RecurrenceType.Yearly:
                            if(pRecurrenceOption == 0)
                            {
                                ri.DayNumber = monday.Day;
                            }

                            ri.Periodicity = 1;
                            ri.WeekOfMonth = pRecurrenceOption == 0 ? 0 : WeekOfMonth.Third;
                            ri.WeekDays = monday.GetSchedulerWeekDays();
                            ri.Month = monday.Month;
                            break;
                    }

                    break;
                case 1: // Endet nach y Terminen
                    ri.Range = RecurrenceRange.OccurrenceCount;

                    var day = pStartDate;

                    switch (pType)
                    {
                        case RecurrenceType.Daily:
                            if(pRecurrenceOption == 1) // Jeden Arbeitstag endet nach y  Terminen
                            {
                                ri.WeekDays = WeekDays.WorkDays;
                                var counter1 = 0;

                                do
                                {
                                    if(day.DayOfWeek != DayOfWeek.Saturday && day.DayOfWeek != DayOfWeek.Sunday)
                                    {
                                        counter1++;
                                    }

                                    day = day.AddDays(1);
                                } while(counter1 < pOccurrenceCount - 1);
                            }
                            else
                            {
                                ri.Periodicity = 3;
                                ri.OccurrenceCount = pOccurrenceCount;

                                for (var i = 0; i < pOccurrenceCount - 1; i++)
                                {
                                    day = day.AddDays(ri.Periodicity);
                                }
                            }

                            ri.End = day;

                            break;
                        case RecurrenceType.Weekly:
                            // Jeden Montag und Dienstag alle 2 Wochen
                            ri.WeekDays = WeekDays.Monday | WeekDays.Tuesday;
                            ri.OccurrenceCount = pOccurrenceCount;
                            ri.Periodicity = 2;

                            var weekDays = SUtils.GetWeekDaysFromNumber((int) ri.WeekDays);

                            var counter = 1;
                            var position = weekDays.IndexOf(day.DayOfWeek);

                            do
                            {
                                for(var i = position; i < weekDays.Count; i++)
                                {
                                    day = SUtils.GetNextDateTime(day, weekDays.ElementAt(i), ri.Periodicity, RecurrenceType.Weekly);
                                    counter++;
                                }

                                position = (weekDays.Count - 1) % (position == 0 ? position + 1 : position);
                            } while(counter < pOccurrenceCount);

                            ri.End = day;
                            break;
                        case RecurrenceType.Monthly:
                            ri.WeekDays = pStartDate.GetSchedulerWeekDays();
                            ri.WeekOfMonth = pRecurrenceOption == 0 ? 0 : pStartDate.GetWeekOfMonthForRecurrenceInfo();

                            if (pRecurrenceOption == 0) // Am 3. jedes 3. Monats. Endet nach 3 Terminen
                            {
                                ri.DayNumber = pStartDate.Day;
                                ri.Periodicity = 3;
                                ri.OccurrenceCount = pOccurrenceCount;
                            }
                            else // Jeden 3. Montag jedes 3. Monats. Endet nach 3 Terminen
                            {
                                ri.End = pStartDate.AddMonths(3 * pOccurrenceCount);
                            }
                            break;
                        case RecurrenceType.Yearly:
                            ri.Month = pStartDate.Month;
                            ri.WeekDays = pStartDate.GetSchedulerWeekDays();
                            ri.OccurrenceCount = pOccurrenceCount;

                            if (pRecurrenceOption == 0) // Am x. des Monats
                            {
                                ri.DayNumber = pStartDate.Day;
                            }
                            else // Jeden 3. Montag im Juni
                            {
                                ri.WeekOfMonth = pStartDate.GetWeekOfMonthForRecurrenceInfo();
                            }
                            break;
                    }

                    break;
                case 2: // Endet am xx.xx.xxxx
                    if(!pRecurrenceEndDate.HasValue)
                    {
                        return null;
                    }

                    ri.Range = RecurrenceRange.EndByDate;
                    ri.End = pRecurrenceEndDate.Value;

                    switch (pType)
                    {
                        // Start, End
                        case RecurrenceType.Daily:
                            if(pRecurrenceOption == 0) // Alle x Tage. Endet am xx.xx.xxxx
                            {
                                day = ri.Start;
                                while(day < ri.End && ri.OccurrenceCount < 3)
                                {
                                    day = day.AddDays(3);
                                    ri.OccurrenceCount++;
                                }
                            }
                            else // Jeden Arbeitstag. Endet am xx.xx.xxxx
                            {
                                ri.WeekDays = WeekDays.WorkDays;
                                ri.OccurrenceCount = (ri.End - ri.Start).Days + 1 - DateTimeUtils.GetNumberOfWeekEndDaysInBetween(ri.Start, ri.End);
                            }
                            break;
                        case RecurrenceType.Weekly:
                            ri.WeekDays = WeekDays.Monday | WeekDays.Wednesday | WeekDays.Friday;

                            var weekDays = SUtils.GetWeekDaysFromNumber((int)ri.WeekDays);

                            day = ri.Start;
                            var position = weekDays.IndexOf(day.DayOfWeek) + (weekDays.Count > 1 ? 1 : 0);

                            do
                            {
                                for (var i = position; i < weekDays.Count; i++)
                                {
                                    day = SUtils.GetNextDateTime(day, weekDays.ElementAt(i), 1, RecurrenceType.Weekly).Date;
                                    ri.OccurrenceCount++;
                                }

                                position = (weekDays.Count - 1) % (position == 0 ? position + 1 : position);
                            } while (day < ri.End.Date);

                            break;
                        case RecurrenceType.Monthly:
                            ri.WeekOfMonth = pRecurrenceOption == 0 ? 0 : pStartDate.GetWeekOfMonthForRecurrenceInfo();

                            if (pRecurrenceOption == 0) // Am 17. jedes 3. Monats. Endet am xx.xx.xxxx (17. diesen Monats + 6 Monate)
                            {
                                ri.End = new DateTime(ri.Start.AddMonths(7).Year, ri.Start.AddMonths(7).Month, 1, ri.Start.Hour, ri.Start.Minute, ri.Start.Second);
                                ri.DayNumber = 17;
                                ri.Periodicity = 3;
                                ri.WeekDays = new DateTime(ri.Start.Year, ri.Start.Month, 17).GetSchedulerWeekDays();
                                ri.OccurrenceCount = 3;
                            }
                            else // Am x. [Wochentag] jedes y. Monats. Endet am xx.xx.xxxx
                            {
                                // 5 mal
                                var abc = DateTimeUtils.GetNthDayOfWeekInMonth(ri.Start.AddMonths(4), 3, DayOfWeek.Wednesday);
                                ri.End = abc < pRecurrenceEndDate.Value ? pRecurrenceEndDate.Value : abc;
                                ri.WeekOfMonth = WeekOfMonth.Third;
                                ri.OccurrenceCount = 5;
                                ri.WeekDays = WeekDays.Monday;
                            }
                            break;
                        case RecurrenceType.Yearly:
                            ri.WeekOfMonth = pRecurrenceOption == 0 ? 0 : pStartDate.GetWeekOfMonthForRecurrenceInfo();

                            if (pRecurrenceOption == 0) // Am x. [Monat]. Endet am xx.xx.xxxx (1 Jahr später)
                            {
                                ri.End = ri.Start.AddYears(1);
                                ri.DayNumber = ri.Start.Day;
                                ri.WeekDays = ri.Start.GetSchedulerWeekDays();
                                ri.Month = ri.Start.Month;
                                ri.OccurrenceCount = ri.Start.AddYears(1).Year - ri.Start.Year + 1;
                            }
                            else // Jeden 3. Mittwoch im [Aktueller Monat]. Endet am xx.xx.xxxx (1 Jahr vom Startdatum entfernt)
                            {
                                var wednesday = ri.Start.FirstDateOfWeek(ri.Start.GetIso8601WeekOfYear()).AddDays(2);

                                ri.WeekDays = WeekDays.Wednesday;
                                ri.Start = DateTimeUtils.GetNthDayOfWeekInMonth(wednesday, 3, wednesday.DayOfWeek);
                                ri.DayNumber = ri.Start.Day;
                                ri.Month = ri.Start.Month;
                                ri.End = DateTimeUtils.GetNthDayOfWeekInMonth(ri.Start.AddYears(1), 3, ri.Start.DayOfWeek);
                                ri.OccurrenceCount = ri.End.Year - ri.Start.Year + 1;
                            }
                            break;
                    }

                    break;
            }

            return ri.ToXml();
        }

        private static SchedulerAppointment GenerateTestAppointment(bool pIsPrivate, bool pIsAllDay, DateTime pStart, DateTime pEnd, AppointmentType pType, string pSubject, Employee pOriginator)
        {
            return GenerateTestAppointment(pIsPrivate, new List<Customer>(), new List<Resource>(), new List<Employee2SchedulerAppointment>(), pIsAllDay, pStart, pEnd, pType, pSubject, pOriginator);
        }

        private static SchedulerAppointment GenerateTestAppointment(bool pIsPrivate, IList<Customer> pCustomerList, IList<Resource> pResourceList, IList<Employee2SchedulerAppointment> pEmployeeList, bool pIsAllDay, DateTime pStart, DateTime pEnd, AppointmentType pType, string pSubject, Employee pOriginator)
        {
            var appointment = new SchedulerAppointment
            {
                AllDay       = pIsAllDay,
                CustomerList = pCustomerList,
                EmployeeList = pEmployeeList,
                ResourceList = pResourceList,
                StartDate    = pStart,
                EndDate      = pEnd,
                Type         = (int) pType,
                Location     = CreateRandomLocationName(),
                IsPrivate    = pIsPrivate,
                Subject      = pSubject,
                Originator   = pOriginator,
                Notice       = SUtils.TestAppointmentNotice
            };

            return appointment;
        }

        public void DeleteTestAppointments()
        {
            try
            {
                var testAppointments = DAOFactory.SearchDAO.GetTestAppointments();

                DAOFactory.GenericDAO.Delete(testAppointments);
            }
            catch(Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

        public List<ResourceDC> CheckResourceAvailability(DateTime start, DateTime end, List<long> resourceOids, long? selectedAppointmentOid)
        {
            return MapperFactory.ResourceDC_Resource.MapToNewDCs(DAOFactory.SearchDAO.CheckAvailabilityOfResources(resourceOids, start, end, selectedAppointmentOid));
        }
    }
}