using System;
using System.Collections.Generic;
using System.Linq;
using System.ServiceModel;
using BeWo.Data;
using BeWo.Service.Plugins;
using BS.Shared.DataContracts.Compact;
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 Utils = BeWo.Service.Core.Utils;
using BeWo.Service.Invoicing;
using Dakota.Logic;
using Dakota;
using Dakota.Models;
using System.Net;
using System.Collections.Specialized;
using Newtonsoft.Json;
using BS.Shared.DataContracts.GkvAbrechnung;
using BS.Shared.Extensions;
using BS.Shared.Exceptions;
using BS.Shared.AppSender;
using BeWo.Data.Security;
using BS.Shared.DataContracts.Invoicing.XRechnung;

namespace BeWo.Service.ServiceImplementations
{
	[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall, ConcurrencyMode = ConcurrencyMode.Single)]
	public class AccountingServiceImp : IAccountingService
	{
		public string Tenant => MultitenancyOperationContextExt.Current?.Tenant;

		public void DeactivateInvoiceBases(List<InvoiceBaseDC> invoices)
		{
			try
			{
				var s = PluginLoader.FindClass<AccountingService>();
				s.DeactivateInvoiceBases(invoices);


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

		public void StorniereInvoiceBases(List<InvoiceBaseDC> invoices)
		{
			try
			{
				var s = PluginLoader.FindClass<AccountingService>();
				s.StorniereInvoiceBases(invoices);


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

		public void DeactivateServiceInvoices(List<ServiceInvoiceDC> invoices)
		{
			try
			{
				var s = PluginLoader.FindClass<AccountingService>();
				s.DeactivateServiceInvoices(invoices);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public void DeactivateSettlementInvoice(List<Settlement2DC> invoices)
		{
			try
			{
				ServiceLogic.SetActivationType<SettlementInvoice>(invoices.ToDictionary(i => i.SettlementIvoiceOid.Value, i => i.SettlementInvoiceVersion.Value), ActivationTypeId.Deleted);
				ServiceLogic.SetActivationType<InvoiceBase>(invoices.ToDictionary(i => i.InvoiceBaseOid.Value, i => i.InvoiceBaseVersion.Value), ActivationTypeId.Deleted);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public List<ServiceInvoiceDC> GenerateInitialServiceInvoices(
			long costBearerOid,
			long? supportConceptOid,
			DateTimeSpan invoicePeriod)
		{
			try
			{
				var acc = PluginLoader.FindClass<AccountingService>();
				return acc.GenerateInitialServiceInvoices(costBearerOid, supportConceptOid, invoicePeriod);

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

		public List<InvoiceBaseDC> GetAllActiveInvoiceBases()
		{
			try
			{
				return MapperFactory.InvoiceBaseDC_InvoiceBase.MapToNewDCs(DAOFactory.GenericDAO.GetAllActive<InvoiceBase>());
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public List<InvoiceBaseDC> GetInvoiceBases(DateTime? startDate, DateTime? endDate)
		{
			try
			{
				var s = PluginLoader.FindClass<AccountingService>();

				return s.GetInvoiceBases(startDate, endDate);

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

		public List<InvoiceBaseDC> GetInvoiceBases2(DateTime? startDate, DateTime? endDate, bool filterByInvoiceDate)
		{
			try
			{
				var s = PluginLoader.FindClass<AccountingService>();

				return s.GetInvoiceBases(startDate, endDate, filterByInvoiceDate);

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

		public List<InvoiceBaseDC> GetInvoiceBasesForCostBearerAndId(DateTime? startDate, DateTime? endDate, long costBearerOid, String invoiceId)
		{
			try
			{
				var s = PluginLoader.FindClass<AccountingService>();

				return s.GetInvoiceBases(startDate, endDate, costBearerOid, invoiceId);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public List<InvoiceBaseDC> GetInvoiceBasesForCostBearerAndIdAndIsUsed(DateTime? startDate, DateTime? endDate, long costBearerOid, String invoiceId)
		{
			try
			{
				var gkv_abrechnungen = DAOFactory.GenericDAO.GetAllActive<GkvAbrechnung>();

				var s = PluginLoader.FindClass<AccountingService>();

				var rtn = s.GetInvoiceBases(startDate, endDate, costBearerOid, invoiceId);

				HashSet<long> invoices = new HashSet<long>();
				foreach (var gkv_abrechnung in gkv_abrechnungen)
				{
					foreach (var invoice in gkv_abrechnung.InvoiceBases)
					{
						invoices.Add(invoice.Oid.Value);
					}
				}

				foreach (var invoice in rtn)
				{
					invoice.IsAlreadyInActiveGkvAbrechnung = invoices.Contains(invoice.InvoiceBaseOid.Value);
				}

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

		public List<InvoiceBaseDC> GetGeneralInvoiceBasesForCustomer(long customerOid)
		{
			try
			{
				return MapperFactory.InvoiceBaseDC_InvoiceBase.MapToNewDCs(DAOFactory.SearchDAO.GetInvoiceBaseByCustomerOid(InvoiceType.General, customerOid));
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public List<InvoiceBaseDC> GetGeneralInvoiceBasesForOrganisation(long organisationOid)
		{
			try
			{
				return MapperFactory.InvoiceBaseDC_InvoiceBase.MapToNewDCs(DAOFactory.SearchDAO.GetInvoiceBaseByOrganisationOid(InvoiceType.General, organisationOid));
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public List<InvoiceBaseDC> GetGeneralInvoiceBasesForPerson(long personOid)
		{
			try
			{
				return MapperFactory.InvoiceBaseDC_InvoiceBase.MapToNewDCs(DAOFactory.SearchDAO.GetInvoiceBaseByPersonOid(InvoiceType.General, personOid));
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public List<InvoiceBaseDC> GetInvoiceBasesForSupportConcept(InvoiceType type, long supportConceptOid)
		{
			try
			{
				return MapperFactory.InvoiceBaseDC_InvoiceBase.MapToNewDCs(DAOFactory.SearchDAO.GetInvoiceBaseByTypeAndSupportConceptOid(type, supportConceptOid));
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public ServiceInvoiceDC GetServiceInvoiceByInvoiceBaseOid(long invoiceBaseOid)
		{
			try
			{
				var dc = MapperFactory.ServiceInvoiceDC_ServiceInvoice.MapToNewDC(DAOFactory.SearchDAO.GetServiceInvoiceByInvoiceBaseOid(invoiceBaseOid));

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

		public List<ServiceInvoiceDC> GetServiceInvoices(long costBearerOid, long? supportConceptOid, DateTimeSpan period)
		{
			try
			{
				List<ServiceInvoice> entities = DAOFactory.SearchDAO.GetServiceInvoices(costBearerOid, supportConceptOid, period);
				entities.Sort((x, y) =>
							  {
								  if (y.InvoiceBase.InvoiceDate.Value.Date.Equals(x.InvoiceBase.InvoiceDate.Value.Date))
								  {
									  return y.InvoiceBase.InvoiceNumber.CompareTo(x.InvoiceBase.InvoiceNumber);
								  }

								  return y.InvoiceBase.InvoiceDate.Value.Date.CompareTo(x.InvoiceBase.InvoiceDate.Value.Date);
							  });

				var dcList = MapperFactory.ServiceInvoiceDC_ServiceInvoice.MapToNewDCs(entities);

				foreach (var serviceInvoice in dcList)
				{
					SortServiceInvoicePeriods(serviceInvoice);
				}
				return dcList;
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		private void SortServiceInvoicePeriods(ServiceInvoiceDC serviceInvoice)
		{
			if (serviceInvoice.ServiceInvoicePeriods != null)
			{
				serviceInvoice.ServiceInvoicePeriods.Sort((x, y) =>
				{
					if (x.Customer != null && y.Customer != null)
						return x.Customer.ToString().CompareTo(y.Customer.ToString());
					else if (x.Start != null && y.Start != null)
					{
						x.Start.Value.CompareTo(y.Start.Value);
					}
					return 0;
				});
			}
		}

		public Settlement2DC GetSettlementByInvoiceBaseOid(long invoiceBaseOid)
		{
			try
			{
				return MapperFactory.SettlementDC_SettlementInvoice.MapToNewDC(DAOFactory.SearchDAO.GetSettlementInvoiceByInvoiceBaseOid(invoiceBaseOid));
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public List<Settlement2DC> GetSettlementInvoicesForCostBearerAndPeriod(long costBearerOid, DateTime periodStart, DateTime periodEnd)
		{
			try
			{
				return MapperFactory.SettlementDC_SettlementInvoice.MapToNewDCs(DAOFactory.SearchDAO.GetSettlementInvoicesForCostBearerAndPeriod(costBearerOid, periodStart, periodEnd));
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public List<Settlement2DC> GetSettlementInvoicesForSupportConcept(long supportConceptOid)
		{
			try
			{
				return MapperFactory.SettlementDC_SettlementInvoice.MapToNewDCs(DAOFactory.SearchDAO.GetSettlementInvoiceBySupportConceptOid(supportConceptOid));
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public List<long> InsertNewInvoiceBases(List<InvoiceBaseDC> invoices)
		{
			try
			{
				if (invoices != null && LoggedInUserOperationContextExt.Current != null &&
					LoggedInUserOperationContextExt.Current.User != null)
				{
					var loggedInUser = LoggedInUserOperationContextExt.Current.User;

					foreach (var ib in invoices)
					{
						ib.SenderContactInformations = new List<ContactDC>();


						foreach (var contact in loggedInUser.Employee.Person.Contacts)
						{
							var newContact = new ContactDC();
							newContact.ContactType = contact.Type;
							newContact.ContactValue = contact.Value;

							ib.SenderContactInformations.Add(newContact);
						}
					}


				}

				var newInvoices = MapperFactory.InvoiceBaseDC_InvoiceBase.MapToNewEntities(invoices);
				int count = 0;

				var inc = PluginLoader.FindClass<InvoiceNumberGenerator>();

				foreach (var ib in newInvoices)
				{
					if (ib.Type == InvoiceType.General)
					{
						foreach (var item in ib.InvoiceItems)
						{
							item.AmountTotal = Math.Round(item.AmountTotal ?? 0, 2, MidpointRounding.AwayFromZero);
						}
					}
					var nextNumber = inc.GetNextInvoiceNumber(count, ib);
					if (!String.IsNullOrEmpty(nextNumber))
					{
						if (!String.IsNullOrEmpty(ib.InvoiceNumber)) // Rechnungsnummer schon vorher erzeugt oder per Hand vergeben.
						{
							if (ib.InvoiceNumber == nextNumber)
							//Die per Hand vergebene Rechnungsnummer ist gleich der nächsten berechneten Rechnungsnummer, daher Rechnungsnummerzähler erhöhen
							{
								count++;
							}
						}
						else
						{
							ib.InvoiceNumber = nextNumber;
							count++;
						}
					}
				}

				var factory = PluginLoader.FindClass<InvoiceFactory>();

				if (factory != null)
				{
					foreach (var ib in newInvoices)
					{
						if (ib.Type == InvoiceType.CustomerEquity)
						{
							var creator = factory.CreateEquityInvoiceCreator(ib);
							creator.InitEquityInvoice(ib);
						}
						else if (ib.Type == InvoiceType.General)
						{
							var creator = factory.CreateGeneralInvoiceCreator(ib);
							creator.InitInvoice(ib);
						}
					}


				}



				DAOFactory.GenericDAO.Insert(newInvoices);

				inc.IncreaseInvoiceNumber(count, newInvoices);

				return newInvoices.Select(i => i.Oid.Value).ToList();
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public List<long> InsertNewServiceInvoices(List<ServiceInvoiceDC> invoices)
		{
			try
			{
				//Prüfe Flags
				var neueRechnungen = new List<ServiceInvoiceDC>();
				var diffRechnungen = invoices.Where(i => i.InvoiceBase.DiffErstellen).ToList();

				//Bei neuer Rechung prüfen, ob eine Diff Rechnung vorher generiert wurde.
				foreach (var item in invoices.Where(i => i.InvoiceBase.NeuErstellen))
				{
					if (item.OriginalZurDifferenz != null)
					{
						neueRechnungen.Add(item.OriginalZurDifferenz);
					}
					else
					{
						neueRechnungen.Add(item);
					}
				}

				var newInvoices = MapperFactory.ServiceInvoiceDC_ServiceInvoice.MapToNewEntities(neueRechnungen);
				newInvoices.AddRange(MapperFactory.ServiceInvoiceDC_ServiceInvoice.MapToNewEntities(diffRechnungen));
				if (newInvoices.Count > 0)
				{
					int count = 0;
					var inc = PluginLoader.FindClass<InvoiceNumberGenerator>();

					foreach (var i in newInvoices)
					{
						var nextNumber = inc.GetNextInvoiceNumber(count, i.InvoiceBase);
						if (!String.IsNullOrEmpty(nextNumber))
						{
							//if (!String.IsNullOrEmpty(i.InvoiceBase.InvoiceNumber) && newInvoices.Count == 1)
							// // Rechnungsnummer schon vorher erzeugt oder per Hand vergeben.
							//{
							// if (i.InvoiceBase.InvoiceNumber == nextNumber || newInvoices.Count > 1)
							//  //Die per Hand vergebene Rechnungsnummer ist gleich der nächsten berechneten Rechnungsnummer, daher Rechnungsnummerzähler erhöhen
							// {
							//  count++;
							// }
							//}
							//else
							//{
							i.InvoiceBase.InvoiceNumber = nextNumber;
							count++;
							//}
						}
					}

					DAOFactory.GenericDAO.Insert(newInvoices);

					inc.IncreaseInvoiceNumberForServiceInvoices(count, newInvoices);
				}
				return newInvoices.Select(i => i.Oid.Value).ToList();
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}


		public List<long> InsertNewSettlementInvoice(List<Settlement2DC> invoices)
		{
			try
			{

				var newInvoices = MapperFactory.SettlementDC_SettlementInvoice.MapToNewEntities(invoices);
				int count = 0;
				var inc = PluginLoader.FindClass<InvoiceNumberGenerator>();

				foreach (var i in newInvoices)
				{
					var nextNumber = inc.GetNextInvoiceNumber(count, i.InvoiceBase);
					if (!String.IsNullOrEmpty(nextNumber))
					{
						if (!String.IsNullOrEmpty(i.InvoiceBase.InvoiceNumber)) // Rechnungsnummer schon vorher erzeugt oder per Hand vergeben.
						{
							if (i.InvoiceBase.InvoiceNumber == nextNumber)
							//Die per Hand vergebene Rechnungsnummer ist gleich der nächsten berechneten Rechnungsnummer, daher Rechnungsnummerzähler erhöhen
							{
								count++;
							}
						}
						else
						{
							i.InvoiceBase.InvoiceNumber = nextNumber;
							count++;
						}
					}
				}

				DAOFactory.GenericDAO.Insert(newInvoices);

				inc.IncreaseInvoiceNumber(count, newInvoices);
				return newInvoices.Select(i => i.Oid.Value).ToList();
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public InvoiceBaseDC LoadInvoiceBaseByOid(long invoiceBaseOid)
		{
			try
			{
				var r = MapperFactory.InvoiceBaseDC_InvoiceBase.MapToNewDC(
				DAOFactory.GenericDAO.LoadByID<InvoiceBase>(invoiceBaseOid));

				if (r.Type == InvoiceType.Settlement && r.SupportConceptOid != null)
				{
					SupportConcept sc = DAOFactory.GenericDAO.LoadByID<SupportConcept>(r.SupportConceptOid.Value);
					r.CustomerFirstName = sc.Customer.Person.FirstName;
					r.CustomerLastName = sc.Customer.Person.LastName;

				}

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

		public InvoiceNumberDC LoadInvoiceNumber()
		{
			try
			{
				var inr = DAOFactory.GenericDAO.LoadByID<InvoiceNumber>(1);
				if (inr != null)
					return MapperFactory.InvoiceNumberDC_InvoiceNumber.MapToNewDC(inr);
				return null;
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public ServiceInvoiceDC LoadServiceInvoiceByOid(long serviceInvoiceOid)
		{
			try
			{
				var r = MapperFactory.ServiceInvoiceDC_ServiceInvoice.MapToNewDC(DAOFactory.GenericDAO.LoadByID<ServiceInvoice>(serviceInvoiceOid));

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

		public List<long> UpdateInvoiceBases(List<InvoiceBaseDC> invoices)
		{
			try
			{
				var originals = DAOFactory.GenericDAO.LoadByIDs<InvoiceBase>(invoices.Select(i => i.InvoiceBaseOid.Value));
				bool macheMerge = true;
				foreach (var entity in originals)
				{
					var dc = invoices.Where(i => i.InvoiceBaseOid == entity.Oid).FirstOrDefault();


					if (dc.IsPaid != entity.IsPaid ||
						dc.IsExported != entity.IsExported ||
						dc.IsReviewed != entity.IsReviewed ||
						dc.IsSent != entity.IsSent ||
						dc.PartialPayment != entity.PartialPayment)
					{
						//Kann nur über die Rechnungsübersicht geändert werden, daher kein Merge mit dem dc machen!
						entity.IsPaid = dc.IsPaid;
						entity.IsExported = dc.IsExported;
						entity.IsReviewed = dc.IsReviewed;
						entity.IsSent = dc.IsSent;
						entity.PartialPayment = dc.PartialPayment;
						macheMerge = false;
						DAOFactory.GenericDAO.Update(entity);
					}
				}

				if (macheMerge)
				{
					MapperFactory.InvoiceBaseDC_InvoiceBase.MergeWithEntitys(invoices, originals);
					DAOFactory.GenericDAO.Update(originals);
				}
				return originals.Select(e => e.Version.Value).ToList();
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public List<long> SetInvoicePaid(List<InvoiceBaseDC> invoices, bool isPaid)
		{
			try
			{
				var originals = DAOFactory.GenericDAO.LoadByIDs<InvoiceBase>(invoices.Select(i => i.InvoiceBaseOid.Value));
				foreach (var invoiceBase in originals)
				{
					invoiceBase.IsPaid = isPaid;
				}
				DAOFactory.GenericDAO.Update(originals);
				return originals.Select(e => e.Version.Value).ToList();
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public InvoiceNumberDC UpdateInvoiceNumber(InvoiceNumberDC dc)
		{
			try
			{

				var old = DAOFactory.GenericDAO.LoadByID<InvoiceNumber>(1);
				MapperFactory.InvoiceNumberDC_InvoiceNumber.MergeWithEntity(dc, old);
				DAOFactory.GenericDAO.Update(old);

				return MapperFactory.InvoiceNumberDC_InvoiceNumber.MapToNewDC(old);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

        public List<long> UpdateServiceInvoices(List<ServiceInvoiceDC> invoices)
        {
            try
            {
                var acc = PluginLoader.FindClass<AccountingService>();
                return acc.UpdateServiceInvoices(invoices);
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }

		public void UpdateSettlementInvoice(List<Settlement2DC> invoices)
		{
			try
			{
				var originals = DAOFactory.GenericDAO.LoadByIDs<SettlementInvoice>(invoices.Select(i => i.SettlementIvoiceOid.Value));
				MapperFactory.SettlementDC_SettlementInvoice.MergeWithEntitys(invoices, originals);

				//originals.ForEach(
				//                  i =>
				//                  {
				//i.InvoiceBase.Type = InvoiceType.Settlement;

				// We´ll add an invoiceitem, so we can treat a settlement like any other invoice
				//i.InvoiceBase.InvoiceItems.Clear();
				//i.InvoiceBase.InvoiceItems.Add(
				//                               new InvoiceItem
				//                               {
				//                                   AmountTotal = i.Claim,
				//                                   ItemPeriodStart = i.InvoiceBase.AccountingPeriodStart,
				//                                   ItemPeriodEnd = i.InvoiceBase.AccountingPeriodEnd,
				//                                   ItemDescription = "Spitzabrechung"
				//                               });
				//});
				DAOFactory.GenericDAO.Update(originals);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}


		public List<InvoiceNumberDC> LoadInvoiceNumberList()
		{
			try
			{
				var numbers = DAOFactory.GenericDAO.GetAllActive<InvoiceNumber>();

				return MapperFactory.InvoiceNumberDC_InvoiceNumber.MapToNewDCs(numbers);

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

		public List<InvoiceNumberDC> UpdateInvoiceNumberList(List<InvoiceNumberDC> dclist)
		{
			try
			{
				var numbers = DAOFactory.GenericDAO.GetAllActive<InvoiceNumber>();

				MapperFactory.InvoiceNumberDC_InvoiceNumber.MergeWithEntitys(dclist, numbers);
				DAOFactory.GenericDAO.Update(numbers);

				return MapperFactory.InvoiceNumberDC_InvoiceNumber.MapToNewDCs(numbers);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public XRechnungResponse GetXRechnung(XRechnungRequest req)
		{
			return null;
		}

		#region GKV
		public GkvAbrechnungDC GetGkvAbrechnung(long oid)
		{
			try
			{
				var gkv = DAOFactory.GenericDAO.GetByID<GkvAbrechnung>(oid);

				var dc = MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewDC(gkv);

				return dc;
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}
		public List<GkvAbrechnungDC> GetFilteredGkvAbrechnungen(GkvAbrechnungViewFilterDC gkvAbrechnungViewFilter)
		{
			try
			{
				if (gkvAbrechnungViewFilter == null || !gkvAbrechnungViewFilter.FilterTime)
					return GetAllGkvAbrechnungen();

				var start = gkvAbrechnungViewFilter.Start;
				var end = gkvAbrechnungViewFilter.End;
				var filter = gkvAbrechnungViewFilter.FilterForInvoiceDate;

				var entities = DAOFactory.SearchDAO.GetGkvAbrechnungen(start, end, filter);

				return MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewDCs(entities);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}
		public List<GkvAbrechnungDC> GetAllGkvAbrechnungen()
		{
			try
			{
				var user = LoggedInUserOperationContextExt.Current?.User ?? SessionFacade.LoggedInUser;

				var entries = DAOFactory.GenericDAO.GetAllActive<GkvAbrechnung>();

				var dcs = MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewDCs(entries);

				var updateables = dcs.Where(x => x.IsWaiting()).ToArray();

				if (!updateables.Any())
					return dcs;

				var isUpToDate = SendApp8GetStatusRequest(updateables);

				if (isUpToDate)
					return dcs;

				entries = DAOFactory.GenericDAO.GetAllActive<GkvAbrechnung>();

				dcs = MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewDCs(entries);

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

		public GkvAbrechnungCreateResponseDC CreateNewGkvAbrechnung(GkvAbrechnungCreateRequestDC request)
		{
			var response = new GkvAbrechnungCreateResponseDC();

			try
			{
				var invoice_bases = DAOFactory.GenericDAO.LoadByIDs<InvoiceBase>(request.SelectedInvoiceBases);

				ValidatorExtended.ValidateGkvAbrechnung(request.GkvAbrechnungDC, invoice_bases);

				var gkv_abrechnung = MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewEntity(request.GkvAbrechnungDC);

				if (gkv_abrechnung.AbrechnungsZeitraumEnde.Value.Hour == 0)
				{
					gkv_abrechnung.AbrechnungsZeitraumEnde = gkv_abrechnung.AbrechnungsZeitraumEnde.Value.Date.AddDays(1).AddMilliseconds(-1);
				}

				var orga = gkv_abrechnung.GetOrganisation();

				gkv_abrechnung.Verfahrensstufe = orga.Verfahrensstufe;

				decimal gesamt = 0;
				foreach (var invoicebase_oid in request.SelectedInvoiceBases)
				{
					var service = DAOFactory.SearchDAO.GetServiceInvoiceByInvoiceBaseOid(invoicebase_oid);

					foreach (var peroid in service.ServiceInvoicePeriodList)
					{
						foreach (var invoice in peroid.InvoiceItemList)
						{
							gesamt += invoice.AmountTotal.Value;
						}
					}
				}

				gkv_abrechnung.Betrag = gesamt;
				gkv_abrechnung.Bezahlt = false;

				gkv_abrechnung.ErstelltAm = DateTime.Now;

				DAOFactory.GenericDAO.Insert(gkv_abrechnung);

				var gkv_abrechnung_dc = MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewDC(gkv_abrechnung);

				response.Success = true;
				response.GkvAbrechnungDC = gkv_abrechnung_dc;
			}
			catch (GkvException exc)
			{
				MailUtils.SendGkvModuleErrorMail("CreateNewGkvAbrechnung", exc, Tenant);

				if (exc.Title.IsNotNullOrWhiteSpace())
					response.TitleMessage = exc.Title;
				response.Message = exc.Message;
			}
			catch (Exception e)
			{
				MailUtils.SendGkvModuleErrorMail("CreateNewGkvAbrechnung", e, Tenant);

				throw Utils.CreateBeWoFaultException(e);
			}

			return response;
		}
		public GkvAbrechnungDC UpdateGkvAbrechnung(GkvAbrechnungDC abrechnung)
		{
			try
			{
				var entity = DAOFactory.GenericDAO.GetByID<GkvAbrechnung>(abrechnung.GkvAbrechnungOid.Value);

				MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MergeWithEntity(abrechnung, entity);

				foreach (var invoice in entity.InvoiceBases)
				{
					invoice.IsPaid = entity.Bezahlt;
				}

				DAOFactory.GenericDAO.Update(entity);

				return MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewDC(entity);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}
		public void DeleteGkvAbrechnung(GkvAbrechnungDC abrechnung)
		{
			try
			{
				ServiceLogic.SetActivationType<GkvAbrechnung>(abrechnung.GkvAbrechnungOid.Value, abrechnung.GkvAbrechnungVersion.Value, ActivationTypeId.Deleted);
			}
			catch (Exception e)
			{
				throw Utils.CreateBeWoFaultException(e);
			}
		}

		public GkvAbrechnungSendResponseDC SendNewGkvAbrechnung(GkvAbrechnungSendRequestDC req)
		{
			var response = new GkvAbrechnungSendResponseDC();

			var oid = req.GkvAbrechnungOid;

			var entity = DAOFactory.GenericDAO.LoadByID<GkvAbrechnung>(oid);

			var state = entity.GetState();

			if (entity.IsWaiting() || state == GkvState.Paid)
			{
				response.Message = "Validierung fehlgeschlagen";
				return response;
			}

			var protokoll = new GkvTransferProtokoll
			{
				ErstelltAm = DateTime.Now,
				GkvAbrechnungOid = entity.Oid.Value
			};

			if (entity.GkvTransferProtokolle is null)
				entity.GkvTransferProtokolle = new List<GkvTransferProtokoll>();

			entity.GkvTransferProtokolle.Add(protokoll);

			try
			{
				CreateGkvTransferProtokoll(oid, entity, protokoll);

				// Protokoll braucht Oid
				DAOFactory.GenericDAO.Update(entity);

				var app8_response = SendApp8SendNewRequest(protokoll);

				var app8_protokoll = app8_response.GkvTransferProtokollDC;

				MapperFactory.GkvTransferProtokollDC_GkvTransferprotokoll.MergeWithEntity(app8_protokoll, protokoll);

				response.Success = app8_response.Success;
				response.Message = app8_response.Message;
			}
			catch (GkvException de)
			{
				protokoll.ResultType = GkvTransferResultType.FailSoft;
				protokoll.Fehlerdatum = DateTime.Now;
				protokoll.Fehlernachricht = de.Message;
				protokoll.Fehlertitel = de.Title ?? "Default";
			}
			catch (Exception e)
			{
				protokoll.ResultType = GkvTransferResultType.FailFatal;
				protokoll.Fehlerdatum = DateTime.Now;
				protokoll.Fehlernachricht = e.ToString();
				protokoll.Fehlertitel = "Erstellung (kritisch)";
			}

			DAOFactory.GenericDAO.Update(entity);

			response.TransferProtokoll = MapperFactory.GkvTransferProtokollDC_GkvTransferprotokoll.MapToNewDC(protokoll);
			response.GkvAbrechnungDC = MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewDC(entity);

			return response;
		}
		public GkvAbrechnungGetIKResponseDC SendGetIKRequest(GkvAbrechnungGetIKRequestDC req)
		{
			try
			{
				var app8req = new GkvServerGetIKRequestDC
				{
					IKKrankenkasse = req.IKKrankenkasse,
					Leistungserbringergruppe = req.Leistungserbringergruppe,
					Abrechnungscode = DakotaUtils.GetAbrechnungscode(req.Leistungserbringergruppe),
					Tarifkennzeichen = DakotaUtils.GetTarifkennzeichen(req.Leistungserbringergruppe)
				};

				var app8res = SendApp8Request<GkvServerGetIKRequestDC, GkvServerGetIKResponseDC>(app8req);

				var res = new GkvAbrechnungGetIKResponseDC
				{
					BezDatenannahmestelle = app8res.BezDatenannahmestelle,
					Gefunden = app8res.Gefunden,
					IKDatenannahmestelle = app8res.IKDatenannahmestelle,
					IKKostentrager = app8res.IKKostentrager,
					IKKrankenkasse = app8res.IKKrankenkasse,
					Message = app8res.Message,
					Success = app8res.Success
				};

				if (res.Gefunden)
				{
					var orgas = DAOFactory.SearchDAO.GetAllOrganisationByIKKrankenkasse(req.IKKrankenkasse);

					if(req.OrganisationOid is long oid)
					{
						orgas.RemoveAll(x => x.Oid == oid);
					}

					if (orgas.Any())
					{
						res.BereitsEnthalten = true;
						res.BereitsEnthaltenBei = orgas.Select(x => x.Name).ToList();
					}
				}

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

		private void CreateGkvTransferProtokoll(long oid, GkvAbrechnung gkvAbrechnung, GkvTransferProtokoll protokoll)
		{
			try
			{
				ValidatorExtended.ValidateGkvAbrechnung(gkvAbrechnung, gkvAbrechnung.InvoiceBases);

				var manager = new DakotaManager();
				var mandatordc = new OperationsServiceImp().GetMandator();

				Validator.ValidateMandator(mandatordc);

				var gkvAbrechnungDC = MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewDC(gkvAbrechnung);
				var orgadc = gkvAbrechnungDC.Organisation;

				Validator.ValidateOrganisation(orgadc);

				var datenannahmestelle = orgadc.IKDatenannahmestelle;
				var (datenaustauschreferenz, transfernummer) = GetNextDatenaustauschreferenzTransfernummer(gkvAbrechnung, datenannahmestelle);
				var (dat_short, tra_short) = ClearDatenaustauschreferenzTransfernummer(datenaustauschreferenz, transfernummer);

				protokoll.Datenaustauschreferenz = datenaustauschreferenz;
				protokoll.Transfernummer = transfernummer;

				var first_cost = gkvAbrechnung.InvoiceBases.First().CostBearer2SupportConcept.SupportConcept.Customer;

				var plugin = PluginLoader.FindClass<AccountingService>();
				var addressInfo = plugin.GetAddressInformation(first_cost.Oid);

				foreach (var invoicebase in gkvAbrechnung.InvoiceBases)
				{
					var customer = invoicebase.CostBearer2SupportConcept.SupportConcept.Customer;

					var addressInfo2 = plugin.GetAddressInformation(customer.Oid);

					if (addressInfo.IKLeistungserbringer != addressInfo2.IKLeistungserbringer)
					{
						throw new GkvException($"Klient '{first_cost.Person.LastNameFirstName}' ({addressInfo.IKLeistungserbringer}) und '{customer.Person.LastNameFirstName}' ({addressInfo2.IKLeistungserbringer}) verweisen auf unterschiedliche Leistungserbringer.");
					}
				}

				foreach (var invoicebase in gkvAbrechnung.InvoiceBases)
				{
					var service = DAOFactory.SearchDAO.GetServiceInvoiceByInvoiceBaseOid(invoicebase.Oid.Value);
					var orga2 = invoicebase.CostBearer2SupportConcept.CostBearer.Organisation;
					var customer = invoicebase.CostBearer2SupportConcept.SupportConcept.Customer;

					var invoicebase_dc = MapperFactory.InvoiceBaseDC_InvoiceBase.MapToNewDC(invoicebase);

					var servicedc = MapperFactory.ServiceInvoiceDC_ServiceInvoice.MapToNewDC(service);
					var customerdc = MapperFactory.CustomerDC_Customer.MapToNewDC(customer);

					Validator.ValidateCustomer(customerdc);

					manager.Add(servicedc, orgadc, customerdc, addressInfo, dat_short, tra_short);
				}

				manager.Apply();

				if (manager.DakotaFileDict.Count != 1 || manager.DakotaFileDict.First().Value.GetKostenträgerCount() != 1)
				{
					var msg = "Unerwartete Anzahl an Dakota Files berechnet.";

					throw new GkvException(msg);
				}

				var file_from_manager = manager.DakotaFileDict.First().Value;

				var nutzdatendatei = file_from_manager.GetNutzdatendatei();

				// https://dev.mysql.com/doc/refman/8.3/en/string-type-syntax.html
				// A TEXT column with a maximum length of 16,777,215 (224 − 1) characters.
				// The effective maximum length is less if the value contains multibyte characters.
				// Each MEDIUMTEXT value is stored using a 3-byte length prefix that indicates the number of bytes in the value.
				//
				//        Type | Maximum length
				//  -----------+-------------------------------------
				//    TINYTEXT | 255(2^8−1) bytes
				//        TEXT | 65,535(2^16−1) bytes = 64 KiB
				//  MEDIUMTEXT | 16,777,215(2^24−1) bytes = 16 MiB
				//    LONGTEXT | 4,294,967,295(2^32−1) bytes = 4 GiB


				if (nutzdatendatei.Length > 16777215)
				{
					var msg = $"nutzdatendatei - Länger als 16777215: {nutzdatendatei.Length}";

					throw new GkvException(msg);
				}

				protokoll.IKDatenannahmestelle = file_from_manager.GetIKDatenannahmestelle();
				protokoll.IKKostentrager = file_from_manager.GetIKKostenträger();
				protokoll.IKLeistungserbringer = file_from_manager.GetIKLeistungserbringer();
				protokoll.IKKrankenkasse = file_from_manager.GetIKVersichertenKarte();

				protokoll.Rechnungsnummer = file_from_manager.GetRechnungsnummer();
				protokoll.Auftragsdatei = file_from_manager.GetAuftragsdatei();
				protokoll.Nutzdatendatei = nutzdatendatei;
				protokoll.Transfername = file_from_manager.GetTransferName();
				protokoll.Dateigrosse = nutzdatendatei.Length;

				protokoll.Dateityp = "Nutzdatendatei";
				protokoll.Dateiname = protokoll.Transfername;

				protokoll.AbsenderBezeichnung = "ownSoft GmbH";
				protokoll.EmpfangerBezeichnung = orgadc.BezDatenannahmestelle;
			}
			catch (GkvException de)
			{
				if (string.IsNullOrEmpty(de.Title))
					de.Title = "Protokoll Erstellung";

				MailUtils.SendGkvModuleErrorMail("CreateGkvTransferProtokoll", de, Tenant);

				throw de;
			}
			catch (Exception e)
			{
				MailUtils.SendGkvModuleErrorMail("CreateGkvTransferProtokoll", e, Tenant);

				throw new GkvException(e.Message, "Erstellung");
			}
		}

		private Tuple<int, int> GetNextDatenaustauschreferenzTransfernummer(GkvAbrechnung gkvAbrechnung, string datenannahmestelle)
		{
			var datenaustauschref = DAOFactory.SearchDAO.GetNextDatenaustauschreferenz(datenannahmestelle);
			int transfernummer;

			var state = gkvAbrechnung.GetState();

			if (state == GkvState.NoSend)
			{
				transfernummer = DAOFactory.SearchDAO.GetNextTransfernummer(datenannahmestelle);
			}
			else if (state == GkvState.ErrorSoft || state == GkvState.ErrorFatal || state == GkvState.ErrorFolgefehler)
			{
				transfernummer = gkvAbrechnung.GkvTransferProtokolle.Last().Transfernummer;
			}
			else
			{
				throw new ArgumentException("Versucht Transfernummer zu laden, invalid state", nameof(state));
			}

			return new Tuple<int, int>(datenaustauschref, transfernummer);
		}
		private Tuple<int, int> ClearDatenaustauschreferenzTransfernummer(int datenaustauschreferenz, int transfernummer)
		{
			int d = datenaustauschreferenz % 99999;
			int t = transfernummer % 1000;

			if (d == 0)
			{
				d = 99999;
			}

			return new Tuple<int, int>(d, t);
		}

		private GkvServerSendNewResponseDC SendApp8SendNewRequest(GkvTransferProtokoll protokoll)
		{
			var gkv_transfer_dc = MapperFactory.GkvTransferProtokollDC_GkvTransferprotokoll.MapToNewDC(protokoll);

			var request_app8 = new GkvServerSendNewRequestDC
			{
				Protokoll = gkv_transfer_dc
			};

			var response_app8 = SendApp8Request<GkvServerSendNewRequestDC, GkvServerSendNewResponseDC>(request_app8);

			if (!response_app8.Success)
				throw new GkvException(response_app8.Message);

			return response_app8;
		}
		/// <summary>
		/// 
		/// </summary>
		/// <param name="updateables"></param>
		/// <param name="loginName"></param>
		/// <param name="hashed_password"></param>
		/// <returns>Returns true, if the states are all up to date. False otherwise.</returns>
		private bool SendApp8GetStatusRequest(GkvAbrechnungDC[] updateables)
		{
			var updateables_len = updateables.Count();

			var request = new GkvServerGetStatusRequestDC
			{
				Tenant = MultitenancyOperationContextExt.Current.Tenant,
				Oids = new long[updateables_len]
			};

			for (int id = 0; id < updateables_len; id++)
			{
				var gkv_abrechnung = updateables[id];
				var gkv_transfer = gkv_abrechnung.TransferProtokolle.Last();

				request.Oids[id] = gkv_transfer.GkvTransferProtokollOid.Value;
			}

			GkvServerGetStatusResponseDC response_app8;
			try
			{
				response_app8 = SendApp8Request<GkvServerGetStatusRequestDC, GkvServerGetStatusResponseDC>(request);
			}
			catch (Exception e)
			{
				MailUtils.SendGkvModuleErrorMail("GkvServerGetStatusRequest Error", e, Tenant);

				return true;
			}

			if (!response_app8.Success)
				throw new GkvException("Success false - " + response_app8.Message);
			
			if (response_app8.Results is null)
				throw new GkvException("Result null - " + response_app8.Message);

			var results = response_app8.Results.Where(x => x is object);

			if (!results.Any())
				return true;

			HandleGkvServerResults(results);

			return false;
		}

		public void HandleGkvServerResults(IEnumerable<GkvServerResultDC> results)
		{
			var protokolls = new List<GkvTransferProtokoll>();
			foreach (var result in results)
			{
				var protokoll = DAOFactory.GenericDAO.GetByID<GkvTransferProtokoll>(result.ProtokollOid);

				protokoll.ResultType = result.ResultType;
				protokoll.Fehlertitel = result.Titel;
				protokoll.Fehlerdatum = result.Datum;
				protokoll.Fehlernachricht = result.Nachricht;

				switch (result.ResultType)
				{
					case GkvTransferResultType.Success:
						protokoll.SentDakotaSuccess = true;
						break;
					case GkvTransferResultType.FailSoft:
						protokoll.SentApp8Success = false;
						break;
					case GkvTransferResultType.FailFatal:
						protokoll.SentApp8Success = false;
						break;
					case GkvTransferResultType.FailFollowUp:
						protokoll.SentApp8Success = false;
						break;
				}

				protokolls.Add(protokoll);
			}

			if(protokolls.Any())
				DAOFactory.GenericDAO.Update(protokolls);

			var follows = results.Where(x => x.ResultType == GkvTransferResultType.FailFollowUp);

			if (follows.Any())
			{
				foreach (var follow in follows)
				{
					var protokoll_oid = follow.ProtokollOid;
					var protokoll = DAOFactory.GenericDAO.LoadByID<GkvTransferProtokoll>(protokoll_oid);
					var abrechnung_oid = protokoll.GkvAbrechnungOid;

					var new_req = new GkvAbrechnungSendRequestDC()
					{
						GkvAbrechnungOid = abrechnung_oid
					};

					var res = SendNewGkvAbrechnung(new_req);

					if (!res.Success)
						throw new GkvException("Success - " + res.Message);
				}
			}
		}

		private Res SendApp8Request<Req, Res>(Req request) where Req : GkvRequestDC where Res : GkvResponseDC
		{
			var user = LoggedInUserOperationContextExt.Current?.User ?? SessionFacade.LoggedInUser;
			if (user == null)
			{
				throw new GkvException("User unbekannt", "KundenApp");
			}

			request.Username = user.LoginName;
			request.Password = user.BCryptPassword;
			request.Tenant = MultitenancyOperationContextExt.Current.Tenant;

			if(request is GkvServerSendNewRequestDC send_new_req)
			{
				send_new_req.ApplicationUserOid = user.Oid.Value;
			}

			return GkvSender.SendApp8Request<Req, Res>(request, request.Tenant);
		}
		
		#endregion
	}
}