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;

namespace BeWo.Service.ServiceImplementations
{
    [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall, ConcurrencyMode = ConcurrencyMode.Single)]
    public class AccountingServiceImp : IAccountingService
    {

        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> 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.IncreaseInvoiceNumber(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));
                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)
        {
            var acc = PluginLoader.FindClass<AccountingService>();
            return acc.UpdateServiceInvoices(invoices);
        }

        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 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.GetState() != 5 && x.GetState() != 1
                //&& x.GesendetAm.HasValue
                ).ToArray();

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

                var isUpToDate = SendApp8GetStatusRequest(updateables, user.LoginName, user.RC2EncryptedHash);

                if (isUpToDate)
                    return dcs;

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

                dcs = MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewDCs(entries);

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

        /// <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, string loginName, string hashed_password)
        {
            var updateables_len = updateables.Count();

            var url = "https://app8.bewoplaner.de/service/GkvAbrechnungView.aspx";

#if DEBUG
            url = "http://localhost:3777/Host/GkvAbrechnungView.aspx";
#endif

            var request = new GkvApp8GetStatusRequest
            {
                Username = loginName,
                Password = hashed_password,
                Tenant = MultitenancyOperationContextExt.Current.Tenant,
                Tuples = new Tuple<GkvAbrechnungDC, long>[updateables_len]
            };

            for (int id = 0; id < updateables_len; id++)
            {
                var gkv_abrechnung = updateables[id];
                var gkv_abrechnung_oid = gkv_abrechnung.GkvAbrechnungOid.Value;

                request.Tuples[id] = new Tuple<GkvAbrechnungDC, long>(gkv_abrechnung, gkv_abrechnung_oid);
            }

            var response_app8_str = SendApp8Request(url, JsonConvert.SerializeObject(request));

            var response_app8 = JsonConvert.DeserializeObject<GkvApp8GetStatusResponse>(response_app8_str);

            if (!response_app8.Success)
            {
                return true;
                throw new NotImplementedException("App 8 Anfrage nicht erfolgreich");
            }

            bool allAreUpToDate = true;
            for (int id = 0; id < updateables_len; id++)
            {
                var gkv_abrechnung = updateables[id];
                var app8_tuple = response_app8.Tuples[id];

                var app8_isUpToDate = app8_tuple.Item1;
                var app8_gkv_abrechnunng = app8_tuple.Item2;

                if (app8_isUpToDate)
                    continue;

                allAreUpToDate = false;

                var gkv_abrechnung_entity = DAOFactory.GenericDAO.LoadByID<GkvAbrechnung>(gkv_abrechnung.GkvAbrechnungOid.Value);

                var gkv_abrechnung_new_entity = MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MergeWithEntity(gkv_abrechnung, gkv_abrechnung_entity);
            
                DAOFactory.GenericDAO.Update(gkv_abrechnung_new_entity);
            }

            return allAreUpToDate;
        }

        public GkvAbrechnungResponseDC CreateNewGkvAbrechnung(GkvAbrechnungRequestDC request)
        {
            var response = new GkvAbrechnungResponseDC();

            try
            {
                var gkv_abrechnung_dc = request.GkvAbrechnungDC;

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

                var manager = new DakotaManager();
                var mandatordc = new OperationsServiceImp().GetMandator();
                var loaded_invoicebases = new List<InvoiceBaseDC>();

                DakotaValidator.ValidateFirstStep(mandatordc, request);

                int? datenaustauschreferenz = null;
                foreach (var invoicebase_oid in request.SelectedInvoiceBases)
                {
                    var service = DAOFactory.SearchDAO.GetServiceInvoiceByInvoiceBaseOid(invoicebase_oid);
                    var invoicebase = DAOFactory.GenericDAO.GetByID<InvoiceBase>(invoicebase_oid);
                    var orga = invoicebase.CostBearer2SupportConcept.CostBearer.Organisation;
                    var customer = invoicebase.CostBearer2SupportConcept.SupportConcept.Customer;

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

                    if(!datenaustauschreferenz.HasValue)
                        datenaustauschreferenz = DAOFactory.SearchDAO.GetLastDatenaustauschreferenz(orga.IKDatenannahmestelle) + 1;

                    loaded_invoicebases.Add(invoicebase_dc);

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

                    DakotaValidator.ValidateSecondStep(orgadc, customerdc);

                    manager.Add(servicedc, orgadc, customerdc, mandatordc, datenaustauschreferenz.Value);
                }

                manager.Apply();

                if (manager.DakotaFileDict.Count != 1 || manager.DakotaFileDict.First().Value.GetKostenträgerCount() != 1)
                {
                    throw new DakotaException("Unerwartete Anzahl an Dakota Files berechnet.");
                }

                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 65,535 (2^16 − 1) characters.
                // The effective maximum length is less if the value contains multibyte
                // characters. Each TEXT value is stored using a 2-byte length prefix
                // that indicates the number of bytes in the value.
                if (nutzdatendatei.Length > 65535)
                {
                    throw new DakotaException($"nutzdatendatei - Länger als 65535: {nutzdatendatei.Length}");
                }

                gkv_abrechnung_dc.IKDatenannahmestelle = file_from_manager.GetIKDatenannahmestelle();
                gkv_abrechnung_dc.IKKostenträger = file_from_manager.GetIKKostenträger();
                gkv_abrechnung_dc.IKLeistungserbringer = file_from_manager.GetIKLeistungserbringer();
                gkv_abrechnung_dc.IKVersichertenKarte = file_from_manager.GetIKVersichertenKarte();

                gkv_abrechnung_dc.Auftragsdatei = file_from_manager.GetAuftragsdatei();
                gkv_abrechnung_dc.Nutzdatendatei = file_from_manager.GetNutzdatendatei();
                gkv_abrechnung_dc.Transfername = file_from_manager.GetTransferName();
                gkv_abrechnung_dc.Datenaustauschreferenz = file_from_manager.GetDatenaustauschreferenz();
                gkv_abrechnung_dc.Dateigröße = nutzdatendatei.Length;

                gkv_abrechnung_dc.ErstelltAm = file_from_manager.Created;
                gkv_abrechnung_dc.Betrag = file_from_manager.GetBetrag();
                gkv_abrechnung_dc.InvoiceBases = loaded_invoicebases;

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

                DAOFactory.GenericDAO.Insert(gkv_abrechnung);

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

                response.Success = true;
                response.GkvAbrechnungDC = new_gkv_abrechnung_dc;

                return response;
            }
            catch (DakotaException exc)
            {
                response.Error = exc.Message;
            }
            catch (Exception e)
            {
                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);

                //entity.Notice = abrechnung.Notice;
                //entity.Bezahlt = abrechnung.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 List<long> InsertNewGkvAbrechnungen(List<GkvAbrechnungDC> dcList)
        {
            //try
            //{
            //    var newGkvAbrechnungen = MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewEntities(dcList);

            //    DAOFactory.GenericDAO.Insert(newGkvAbrechnungen);

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

            return null;
        }

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

            response.Successful = false;

            var user = LoggedInUserOperationContextExt.Current?.User ?? SessionFacade.LoggedInUser;
            if (user == null)
            {
                response.Message = "User unbekannt";
                return response;
            }

            try
            {
                var oid = req.GkvAbrechnungDC.GkvAbrechnungOid.Value;

                string response_app8_str = SendApp8SendNewRequest(oid, user.LoginName, user.RC2EncryptedHash);

                if (string.IsNullOrEmpty(response_app8_str))
                {
                    response.Message = "App8 leere Antwort";
                    return response;
                }

                var response_app8 = JsonConvert.DeserializeObject<GkvApp8SendNewResponse>(response_app8_str);

                response.Successful = response_app8.Success;

                if (response_app8.Success)
                {
                    var entity = DAOFactory.GenericDAO.GetByID<GkvAbrechnung>(req.GkvAbrechnungDC.GkvAbrechnungOid.Value);

                    var child_dc = response_app8.GkvTransferProtokollDC;
                    var child = MapperFactory.GkvTransferProtokollDC_GkvTransferprotokoll.MapToNewEntity(child_dc);

                    entity.GkvTransferProtokolle.Add(child);

                    DAOFactory.GenericDAO.Update(entity);

                    response.Message = "Erfolgreich gesendet";
                    response.GkvAbrechnungDC = MapperFactory.GkvAbrechnungDC_GkvAbrechnung.MapToNewDC(entity);
                }
                else
                {
                    response.Message = response_app8.Message;
                }
                    

                return response;
            }
            catch (Exception e)
            {
                throw Utils.CreateBeWoFaultException(e);
            }
        }
        private string SendApp8SendNewRequest(long oid, string loginName, string hashed_password)
        {
            var entity = DAOFactory.GenericDAO.LoadByID<GkvAbrechnung>(oid);

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

            var url = "https://app8.bewoplaner.de/service/GkvAbrechnungView.aspx";

#if DEBUG
            url = "http://localhost:3777/Host/GkvAbrechnungView.aspx";
#endif

            var request_app8 = new GkvApp8SendNewRequest
            {
                GkvAbrechnung = gkv_abrechnung_dc,
                Username = loginName,
                Password = hashed_password,
                Tenant = MultitenancyOperationContextExt.Current.Tenant
            };

            return SendApp8Request(url, request_app8);
        }

        private string SendApp8Request(string url, object request) => SendApp8Request(url, JsonConvert.SerializeObject(request));
        private string SendApp8Request(string url, string dataString)
        {
            url += "?tenant=" + MultitenancyOperationContextExt.Current.Tenant;

            string response_app8_str;
            using (WebClient client = new WebClient())
            {
                client.Headers.Add(HttpRequestHeader.ContentType, "application/json");

                response_app8_str = client.UploadString(url, "POST", dataString);
            }

            return response_app8_str;
        }
    }
}