using System;
using System.Collections.Generic;
using System.Linq;
using BeWo.Data.Access;
using BeWo.Data.Entities;
using BeWo.Service.DCEntityMapper;
using BeWo.Service.ServiceImplementations;
using BS.Shared.DataContracts;
using BS.Shared.Extensions;
using BS.Shared;
using BeWo.Service.Invoicing;
using BeWo.Data;
using BeWo.Service.Plugins;
using BS.Shared.Core;
using BS.Shared.DataContracts.Compact;
using BS.Shared.Services;
using System.Text;
using System.Diagnostics;

namespace BeWo.Report.ReportObjects
{
	public class FinanceRO : AbstractBeWoReportObject<FinanceRO>
	{
		public DateTime? ReportStartDate { get; set; }

		public DateTime? ReportEndDate { get; set; }

		public decimal? RateFactor { get; set; }

        public bool GruppierungLeistungskategorie { get; set; }

        public IList<SupportConceptFinanceRO> SupportConceptFinanceList { get; set; }

        [DebuggerDisplay("{CustomerName} {SupportConceptTimeSpanString} {AmountTotal} ")]

        public class SupportConceptFinanceRO
		{
			public string CustomerName { get; set; }

			public string SupportConceptTimeSpanString { get; set; }

			public string CostBearerName { get; set; }

			public decimal AmountTotal { get; set; }

			public decimal AmountPaid { get; set; }

		    public decimal AmountPaidInReportTimeSpan { get; set; }

            public decimal OpenAmount { get; set; }

			public decimal ApprovedHours { get; set; }

			public decimal BillableHours { get; set; }

            public decimal StundenNichtFehlkontakte { get; set; }

            public decimal StundenFehlkontakte { get; set; }

            public decimal ApprovedHoursInReportTimeSpan { get; set; }

            public decimal ApprovedAmountInReportTimeSpan { get; set; }

            public decimal BillableHoursInReportTimeSpan { get; set; }

			public decimal BillableHoursInReportTimeSpanWithFactor { get; set; }

            public decimal StundenNichtFehlkontakteInReportTimeSpan { get; set; }

            public decimal StundenFehlkontakteInReportTimeSpan { get; set; }

            public decimal BillableAmountInReportTimeSpan { get; set; }

		    public decimal BillableAmountUntilNow { get; set; }

            public decimal? RateFactor { get; set; }

            public decimal? HourlyRate { get; set; }

            public decimal? AmountInReportTimeSpan { get; set; }

            public decimal? AmountNichtFehlkontakteInReportTimeSpan { get; set; }

            public decimal? AmountFehlkontakteInReportTimeSpan { get; set; }

            public List<ServiceRecordDC> ServiceRecords { get; set; }

			public bool IsApproved { get; set; }

			public SupportConceptCostBearerRelDC Costbearer2Supportconcept { get; set; }

		    public SupportConceptApprovalPeriodDC SupportConceptApprovalPeriod { get; set; }

		    public String Leistungskategorie { get; set; }

            public String GruppierungsKategorie { get; set; }

            public string Custom1 { get; set; }

            public string Custom2 { get; set; }

            public string Custom3 { get; set; }

            public string Custom4 { get; set; }

            public string Custom5 { get; set; }

        }

        public static FinanceRO Create(DateTime? start, DateTime? end)
        {

            return Create(start, end, false);
        }

        public static FinanceRO Create(DateTime? start, DateTime? end, bool onlyNotApproved)
        {

            return Create(start, end, false, onlyNotApproved);
        }

        public static FinanceRO Create(DateTime? start, DateTime? end, bool splitByServiceCategory, bool onlyNotApproved)
		{
			var result = new FinanceRO();
			result.ReportStartDate = start;
			result.ReportEndDate = end;
            result.GruppierungLeistungskategorie = splitByServiceCategory;
			result.SupportConceptFinanceList = new List<SupportConceptFinanceRO>();

            var service = new AnalysisServiceImp();
            var financeList = service.GetOutstandingReceivables(false, false, start, end);

            foreach (var item in financeList)
            {
                if (item.SupportConcept != null && item.SupportConcept.ActivationType != ActivationTypeId.Deleted)
                {
                    var cb2sc = DAOFactory.GenericDAO.LoadByID<CostBearer2SupportConcept>(item.CostBearer.CostBearer2SupportConceptOid);
                    var relDC = MapperFactory.SupportConceptCostBearerRelDC_CostBearer2SupportConcept.MapToNewDC(cb2sc);

                    bool istBewilligt = (relDC.ApprovedEndDate.HasValue || relDC.ApprovedStartDate.HasValue);

                    if (onlyNotApproved && istBewilligt)
                    {
                        continue; // Überspringen, wenn nur die NICHT bewilligten angezeigt werden sollen.
                    }

                    if (splitByServiceCategory)
                    {
                        var financeRO = new FinanceRO();
                        financeRO.AddByServiceCategory(result, item, cb2sc, relDC);
                    }
                    else
                    {
                        var ro = CreateSupportConceptFinanceRO(item, relDC, null);
                        // 2.
                        result.SupportConceptFinanceList.Add(ro);
                    }  
                }
            }

            StringBuilder oidList = new StringBuilder();
            foreach (var ro in result.SupportConceptFinanceList)
            {
                if (oidList.Length > 0)
                {
                    oidList.Append(",");
                }
                oidList.Append(ro.Costbearer2Supportconcept.CostBearer2SupportConceptOid);
            }


            var allServiceDescs = DAOFactory.GenericDAO.GetAll<ServiceDescription>();
            Dictionary<long, ServiceDescriptionDC> serviceDict = new Dictionary<long, ServiceDescriptionDC>();
            foreach (var item in allServiceDescs)
            {
                serviceDict.Add(item.Oid.Value, MapperFactory.ServiceDescriptionDC_ServiceDescription.MapToNewDC(item));
            }

            var cs2ServiceRecords = new Dictionary<long, List<ServiceRecordDC>>();

            if (oidList.Length > 0)
            {
                String sql = "SELECT Oid, Version, StartDate, EndDate, DistanceInMeter, CostBearer2SupportConceptOid, Betrag, ServiceDescriptionOid, RoundedDuration, GroupEmployeeCount, GroupPersonCount, GroupRoundedDuration, GroupOid FROM servicerecord";
                if (oidList.Length > 0)
                {
                    sql += String.Format(" WHERE CostBearer2SupportConceptOid in ({0})", oidList.ToString());
                }
                else
                {
                    sql += " WHERE CostBearer2SupportConceptOid is not null";
                }

                var sqlresult = DAOFactory.SearchDAO.GetSqlResult(sql);
                //
                //update customer set debitornumber = '5' + debitornumber where debitornumber is not null
                foreach (object[] srRow in sqlresult)
                {
                    var sr = CreateServiceRecordDC(srRow, serviceDict);
                    
                    if (sr.CostBearer2SupportConceptOid.HasValue)
                    {
                        if (!cs2ServiceRecords.ContainsKey(sr.CostBearer2SupportConceptOid.Value))
                        {
                            cs2ServiceRecords.Add(sr.CostBearer2SupportConceptOid.Value, new List<ServiceRecordDC>());
                        }
                        cs2ServiceRecords[sr.CostBearer2SupportConceptOid.Value].Add(sr);
                    }
                }
            }

            foreach (var ro in result.SupportConceptFinanceList)
            {
                var cb2sc = ro.Costbearer2Supportconcept;
                var costRateDcs = cb2sc.CostBearer.CostRatePeriods;
                var calc = Calculations.GetInstance(cb2sc.CostBearer.CostBearerID);
                List<ServiceRecordDC> records = null;
                
                if (cs2ServiceRecords.ContainsKey(cb2sc.CostBearer2SupportConceptOid.Value))
                {
                    records = cs2ServiceRecords[cb2sc.CostBearer2SupportConceptOid.Value];
                }
                else
                {
                    records = new List<ServiceRecordDC>();
                }

                // AB, 22.04.2026: Bugfix wenn Betreuung beendet und ein Zeitraum über Ende hinweg gewählt wird
                var terminationDate = ro.Costbearer2Supportconcept.SupportConcept.Customer.TerminationDate;
                DateTime? effectiveEnd = end;
                if (terminationDate.HasValue && (!effectiveEnd.HasValue || terminationDate.Value < effectiveEnd.Value))
                {
                    effectiveEnd = terminationDate.Value;
                }

                //1.
                if (ro.SupportConceptApprovalPeriod != null && ro.SupportConceptApprovalPeriod.ServiceCategory != null)
                {
                    ro.Leistungskategorie = ro.SupportConceptApprovalPeriod.ServiceCategory.Name;
                    ro.ServiceRecords = records.Where(sr => sr.ServiceDescription.Category.ServiceCategoryOid == ro.SupportConceptApprovalPeriod.ServiceCategory.ServiceCategoryOid).ToList();
                }
                else
                {
                    ro.ServiceRecords = records;
                }

                var fkRecords = new List<ServiceRecordDC>();
                var flsRecords = new List<ServiceRecordDC>();

                foreach (var sr in ro.ServiceRecords)
                {
                    sr.Employee = new CompactEmployeeDC { ValueListEntries = new Dictionary<long, ValueListEntryType>() }; // hack, damit später bei der Berechnung des Betrags in der InvoiceCreation kein Fehler kommt
                    sr.CostBearer = cb2sc.CostBearer;
                    sr.SupportConcept = ro.Costbearer2Supportconcept.SupportConcept;
                    sr.Customer = sr.SupportConcept.Customer;

                    if (sr.ServiceDescription.Name.ToLower().Contains("fehlkontakt") || sr.ServiceDescription.Category.Name.ToLower().Contains("fehlkontakt") || (sr.ServiceDescription.ProzentAbrechnung.HasValue && sr.ServiceDescription.ProzentAbrechnung.Value < 100))
                    {
                        fkRecords.Add(sr);
                    }
                    else
                    {
                        flsRecords.Add(sr);
                    }
                }

                if (ro.Costbearer2Supportconcept.SupportConcept.Customer.LastName == "Akbulut")
                {
                    int test = 0;
                }

                //Fehlkontakte
                if (end.HasValue && end < DateTime.MaxValue.AddDays(-1))
                {
                    if (ro.SupportConceptApprovalPeriod != null)
                    {
                        ro.ApprovedHours = calc.GetApprovedHoursTillNow(ro.SupportConceptApprovalPeriod, costRateDcs, end.Value, true) ?? 0;
                    }
                    else
                    {
                        ro.ApprovedHours = calc.GetApprovedHoursTillNow(ro.Costbearer2Supportconcept, effectiveEnd.Value) ?? 0;
                    }
                    ro.StundenNichtFehlkontakte = calc.GetBillableDurationInMinutes(flsRecords.Where(sr => sr.Start.Value.Date < end.Value.AddDays(1)).ToList()) / 60;
                    ro.StundenFehlkontakte = calc.GetBillableDurationInMinutes(fkRecords.Where(sr => sr.Start.Value.Date < end.Value.AddDays(1)).ToList()) / 60;

                    
                }
                else
                {
                    if (ro.SupportConceptApprovalPeriod != null)
                    {
                        ro.ApprovedHours = calc.GetApprovedHoursTillNow(ro.SupportConceptApprovalPeriod, costRateDcs, null, true) ?? 0;
                    }
                    else
                    {
                        ro.ApprovedHours = calc.GetApprovedHoursTillNow(ro.Costbearer2Supportconcept, null) ?? 0;
                    }

                    ro.StundenNichtFehlkontakte = calc.GetBillableDurationInMinutes(flsRecords) / 60;
                    ro.StundenFehlkontakte = calc.GetBillableDurationInMinutes(fkRecords) / 60;
                }

                ro.BillableHours = ro.StundenNichtFehlkontakte + ro.StundenFehlkontakte;

                if (start.HasValue && end.HasValue)
                {
                    var rfcrEnd = costRateDcs.GetCostRatePeriodForDate(CostRatePeriodType.RateFactor, end.Value);
                    if (rfcrEnd != null && rfcrEnd.CostRateValue.HasValue)
                    {
                        ro.RateFactor = (rfcrEnd.CostRateValue.Value + 100m) / 100m;

                        if (!result.RateFactor.HasValue)
                        {
                            result.RateFactor = ro.RateFactor;
                        }
                    }

                    var hcrEnd = costRateDcs.GetCostRatePeriodForDate(CostRatePeriodType.HourlyRate, end.Value);
                    if (hcrEnd != null && hcrEnd.CostRateValue.HasValue)
                    {

                        ro.HourlyRate = hcrEnd.CostRateValue.Value;
                    }
                    if (ro.SupportConceptApprovalPeriod != null)
                    {
                        var periodStart = start;
                        if (ro.SupportConceptApprovalPeriod.StartDate.HasValue && (!periodStart.HasValue || ro.SupportConceptApprovalPeriod.StartDate.Value > periodStart.Value))
                            periodStart = ro.SupportConceptApprovalPeriod.StartDate;
                        var periodEnd = effectiveEnd;
                        if (ro.SupportConceptApprovalPeriod.EndDate.HasValue && (!periodEnd.HasValue || ro.SupportConceptApprovalPeriod.EndDate.Value < periodEnd.Value))
                            periodEnd = ro.SupportConceptApprovalPeriod.EndDate;
                        ro.ApprovedHoursInReportTimeSpan = calc.GetApprovedHoursForPeriod(ro.SupportConceptApprovalPeriod, costRateDcs, periodStart, periodEnd) ?? 0;
                    }
                    else
                    {
                        ro.ApprovedHoursInReportTimeSpan = calc.GetApprovedHoursForPeriod(ro.Costbearer2Supportconcept, start.Value, effectiveEnd.Value);
                    }

                    if (splitByServiceCategory && ro.SupportConceptApprovalPeriod != null)
                    {
                        ro.ApprovedAmountInReportTimeSpan = (decimal)calc.GetApprovedAmountForPeriod(ro.Costbearer2Supportconcept, start.Value, effectiveEnd.Value, ro.SupportConceptApprovalPeriod.ServiceCategory);
                    }
                    else
                    {
                        ro.ApprovedAmountInReportTimeSpan = (decimal)calc.GetApprovedAmountForPeriod(ro.Costbearer2Supportconcept, start.Value, effectiveEnd.Value, null);
                    }
                    ro.AmountInReportTimeSpan = 0;
                    ro.AmountNichtFehlkontakteInReportTimeSpan = 0;
                    ro.AmountFehlkontakteInReportTimeSpan = 0;
                    
                    foreach (var srDc in flsRecords)
                    {
                        if (srDc.Start >= start && srDc.Start.Value.Date <= end.Value.Date)
                        {

                            var billable = calc.GetBillableDurationInMinutes(srDc, false) / 60;
                            ro.StundenNichtFehlkontakteInReportTimeSpan += billable;

                            var rfcr = costRateDcs.GetCostRatePeriodForDate(CostRatePeriodType.RateFactor, srDc.Start.Value);
                            if (rfcr != null && rfcr.CostRateValue.HasValue)
                            {
                                var billableRateFactor = billable * (rfcr.CostRateValue.Value + 100m) / 100m;
                                ro.BillableHoursInReportTimeSpanWithFactor += billableRateFactor;

                                billable = billableRateFactor;
                            }

                            decimal stundensatz = 0;
                            var hcr = costRateDcs.GetCostRatePeriodForDate(CostRatePeriodType.HourlyRate, srDc.Start.Value);
                            if (hcr != null && hcr.CostRateValue.HasValue)
                            {
                                stundensatz = hcr.CostRateValue.Value;
                            }

                            var betrag = billable * stundensatz;
                            ro.AmountNichtFehlkontakteInReportTimeSpan += betrag;
                        }
                    }


                    //Fehlkontakte
                    foreach (var srDc in fkRecords)
                    {
                        if (srDc.Start >= start && srDc.Start.Value.Date <= end.Value.Date)
                        {
                            var billable = calc.GetBillableDurationInMinutes(srDc, false) / 60;
                            ro.StundenFehlkontakteInReportTimeSpan += billable;
                            decimal stundensatz = 0;

                            var hcr = costRateDcs.GetCostRatePeriodForDate(CostRatePeriodType.HourlyRate, srDc.Start.Value);
                            if (hcr != null && hcr.CostRateValue.HasValue)
                            {
                                stundensatz = hcr.CostRateValue.Value;
                            }

                            if (srDc.ServiceDescription.ProzentAbrechnung.HasValue && srDc.ServiceDescription.ProzentAbrechnung.Value < 100)
                            {
                                stundensatz *= (srDc.ServiceDescription.ProzentAbrechnung.Value / 100);
                            }

                            var betrag = billable * stundensatz;

                            ro.AmountFehlkontakteInReportTimeSpan += betrag;
                        }
                    }
                    ro.BillableHoursInReportTimeSpan = ro.StundenNichtFehlkontakteInReportTimeSpan + ro.StundenFehlkontakteInReportTimeSpan;
                    ro.AmountInReportTimeSpan = (ro.AmountNichtFehlkontakteInReportTimeSpan ?? 0) + (ro.AmountFehlkontakteInReportTimeSpan ?? 0);
                    
                }
            }
            return result;
		}

        private static ServiceRecordDC CreateServiceRecordDC(object[] sqlRow, Dictionary<long, ServiceDescriptionDC> serviceDict)
        {
            try
            {
                var dc = new ServiceRecordDC();
                //DAOFactory.SearchDAO.GetSqlResult("SELECT Oid, Version, Start, End, DistanceInMeter, CostBearer2SupportConceptOid, Betrag, ServiceDescriptionOid, RoundedDuration, GroupEmployeeCount, GroupPersonCount, GroupRoundedDuration, GroupOid FROM servicerecord");
                dc.ServiceRecordOid = (long?)sqlRow[0];
                dc.ServiceRecordVersion = (long?)sqlRow[1];
                dc.Start = (DateTime?)sqlRow[2];
                dc.End = (DateTime?)sqlRow[3];

                var test = sqlRow[4];
                if (test != null)
                {
                    decimal meter = 0;

                    if (Decimal.TryParse(test.ToString(), out meter))
                    {
                        dc.DistanceInMeterDecimal = meter;
                    }
                }

                if (dc.DistanceInMeterDecimal.HasValue)
                {
                    dc.DistanceInMeter = (int)dc.DistanceInMeterDecimal;
                }
                dc.CostBearer2SupportConceptOid = (long?)sqlRow[5];
                dc.Betrag = (decimal?)sqlRow[6];

                long? sdOid = (long?)sqlRow[7];
                if (sdOid.HasValue && serviceDict.ContainsKey(sdOid.Value))
                {
                    dc.ServiceDescription = serviceDict[sdOid.Value];
                }
                dc.RoundedDuration = (decimal)sqlRow[8];
                dc.GroupEmployeeCount = (int?)sqlRow[9];
                dc.GroupPersonCount = (int?)sqlRow[10];
                dc.GroupRoundedDuration = (decimal?)sqlRow[11];
                dc.GroupOid = (long?)sqlRow[12];

                return dc;
            }
            catch (Exception e)
            {
                throw;
            }

        }

        public static SupportConceptFinanceRO CreateSupportConceptFinanceRO(FinanceOverviewItemDC item, SupportConceptCostBearerRelDC relDc, SupportConceptApprovalPeriodDC scapDc, bool SplitServiceCategory = false)
        {
            var ro = new SupportConceptFinanceRO();
            ro.CustomerName = item.CustomerName;
            ro.SupportConceptTimeSpanString = item.SupportConceptTimeSpanString;
            ro.CostBearerName = item.CostBearerName;

            if (SplitServiceCategory)
            {
                ro.AmountPaid = 0;
                ro.OpenAmount = ro.AmountTotal;
            }
            else
            {
                ro.AmountTotal = item.AmountTotal;
                ro.AmountPaid = item.AmountPaid;
                ro.OpenAmount = item.OpenAmount;
            }
            ro.Costbearer2Supportconcept = relDc;
            ro.SupportConceptApprovalPeriod = scapDc;
            ro.IsApproved = (relDc.ApprovedEndDate.HasValue || relDc.ApprovedStartDate.HasValue);

            return ro;
        }

        public virtual void AddByServiceCategory(FinanceRO result, FinanceOverviewItemDC item, CostBearer2SupportConcept cb2sc, SupportConceptCostBearerRelDC relDC)
        {
            if (cb2sc.ApprovalPeriodList.Count > 1) // komplexer Ablauf nur, wenn mehr als eine Bewilligung vorliegt
            {
                Dictionary<string, decimal> key2Value = new Dictionary<string, decimal>();
                var SmallList = new List<SupportConceptFinanceRO>();
                SupportConceptFinanceRO ro;
                var baseRo = CreateSupportConceptFinanceRO(item, relDC, null);

                foreach (var scap in cb2sc.ApprovalPeriodList)
                {
                    var scapDC = MapperFactory.SupportConceptApprovalPeriodDC_SupportConceptApprovalPeriod.MapToNewDC(scap);
                    var calc = PluginLoader.FindClass<Calculations>(relDC.CostBearer.CostBearerID) ?? Calculations.GetInstance(relDC.CostBearer.CostBearerID);
                    ro = CreateSupportConceptFinanceRO(item, relDC, scapDC, true);

                    // statt dem auskommentierten Bereich
                    var amountTotal = calc.GetApprovedAmount(scapDC, relDC.CostBearer.CostRatePeriods) ?? 0;
                    ro.AmountTotal = amountTotal;
                    ro.OpenAmount = amountTotal;

                    //var approvedAmountInTimeSpan = calc.GetApprovedAmountInTimeSpan(relDC, result.ReportStartDate, result.ReportEndDate) ?? 0;

                    SmallList.Add(ro);


                    //string key = "";

                    //if (scap.ServiceCategory != null)
                    //{
                    //    key = scap.ServiceCategory.Name;
                    //}
                    //if (key2Value.ContainsKey(key)) // 1. Summenbildung von Gesamtbewilligung pro ServiceKategorie
                    //{
                    //    key2Value[key] += AmountTotal;
                    //    foreach (var r in SmallList)
                    //    {
                    //        if (key == "" && r.SupportConceptApprovalPeriod.ServiceCategory == null)
                    //        {
                    //            r.AmountTotal = key2Value[key];
                    //        }
                    //        else if (key != "" && r.SupportConceptApprovalPeriod.ServiceCategory != null && r.SupportConceptApprovalPeriod.ServiceCategory.Name == key)
                    //        {
                    //            r.AmountTotal = key2Value[key];
                    //        }
                    //    }
                    //}
                    //else
                    //{
                    //    key2Value.Add(key, AmountTotal);
                    //    ro.AmountTotal = AmountTotal;
                    //    SmallList.Add(ro);
                    //}
                }
                var flsEntry = SmallList.OrderByDescending(e => e.AmountTotal).FirstOrDefault(); // 2. Zuordnung der Abschlagszahlungen zur betragsmäßig größten Bewilligung
                flsEntry.AmountPaid = baseRo.AmountPaid;
                flsEntry.OpenAmount = flsEntry.AmountTotal - flsEntry.AmountPaid;
                result.SupportConceptFinanceList.AddRange(SmallList);
            }
            else
            {
                var ro = CreateSupportConceptFinanceRO(item, relDC, null);
                result.SupportConceptFinanceList.Add(ro);
            }
        }

        public void CalculateBillableAmountInReportTimeSpan()
	    {
            CalculateBillableAmountInReportTimeSpan("Finanzauswertung");
        }

        public void CalculateBillableAmountInReportTimeSpan(String invoiceCreatorId)
        {
            if (this.SupportConceptFinanceList != null)
            {
                foreach (var scRo in SupportConceptFinanceList)
                {
                    if (scRo.Costbearer2Supportconcept != null)
                    {
                        CalculateBillableAmountInReportTimeSpan(scRo, invoiceCreatorId);
                    }
                }
            }
        }

        public void CalculateBillableAmountInTimeSpan()
	    {
            CalculateBillableAmountInTimeSpan("Finanzauswertung");
        }

        public void CalculateBillableAmountInTimeSpan(String invoiceCreatorId)
        {
            if (this.SupportConceptFinanceList != null)
            {
                foreach (var scRo in SupportConceptFinanceList)
                {
                    if (scRo.Costbearer2Supportconcept != null)
                    {
                        CalculateBillableAmountInTimeSpan(scRo, scRo.Costbearer2Supportconcept.StartDate, ReportEndDate, true, invoiceCreatorId);
                    }
                }
            }
        }

        private void CalculateBillableAmountInReportTimeSpan(SupportConceptFinanceRO scRo, String invoiceCreatorId)
        {
            CalculateBillableAmountInTimeSpan(scRo, ReportStartDate, ReportEndDate, false, invoiceCreatorId);
        }

	    private void CalculateBillableAmountInTimeSpan(SupportConceptFinanceRO scRo, DateTime? start, DateTime? end, bool totalOrReportTimeSpan, String invoiceCreatorId)
	    {
	        String tenant = null;

            if (MultitenancyOperationContextExt.Current != null)
	            tenant = MultitenancyOperationContextExt.Current.Tenant;
	        else
	            tenant = SessionFacade.Tenant;

	        var factory = PluginLoader.FindClass<InvoiceFactory>(tenant);
	        if (factory == null)
	        {
	            factory = InvoiceFactory.GetInstance(tenant);
	        }
	        Dictionary<CompactSupportConceptDC, List<ServiceRecordDC>> dict = new Dictionary<CompactSupportConceptDC, List<ServiceRecordDC>>();

	        CompactSupportConceptDC sc = CreateCompactSupportConcept(scRo.Costbearer2Supportconcept);
	        if (scRo.ServiceRecords != null)
	        {
	            foreach (var sr in scRo.ServiceRecords)
	            {
	                sr.AlreadyAccounted = false;
	            }
	        }
            else
            {
                scRo.ServiceRecords = new List<ServiceRecordDC>();
            }

	        dict.Add(sc, scRo.ServiceRecords);

            var creator = factory.CreateInvoiceCreator(invoiceCreatorId, tenant, dict);

	        //String text = String.Format("Tenant={0}, Context=Null? {1}, Factory = {2}", tenant,
	        //	MultitenancyOperationContextExt.Current == null, factory);

	        DateTimeSpan span = null;
	        if (start.HasValue && end.HasValue)
	        {
	            span = new DateTimeSpan();
	            span.StartDate = start.Value;
	            span.EndDate = end.Value;
	        }

	        if (scRo.CustomerName.Contains("Löb"))
	        {
	            int test = 0;
	        }
	        var invoices = creator.GenerateServiceInvoices(scRo.Costbearer2Supportconcept.CostBearer.CostBearerOid.Value, span, dict);

	        if (invoices != null && invoices.Count == 1)
	        {
	            //var i = invoices[0];
	            if (totalOrReportTimeSpan)
	            {
	                scRo.BillableAmountUntilNow = invoices[0].ClaimSum ?? 0;

                }
	            else
	            {
	                scRo.BillableAmountInReportTimeSpan = invoices[0].ClaimSum ?? 0;
                }
	        }
	    }

        private CompactSupportConceptDC CreateCompactSupportConcept(SupportConceptCostBearerRelDC c2s)
	    {
            var dc = new CompactSupportConceptDC();
	        dc.SupportConceptOid = c2s.SupportConcept.SupportConceptOid;
            dc.CostBearerRelOids = new List<long>();
            dc.CostBearerRelOids.Add(c2s.CostBearer2SupportConceptOid.Value);
            //dc.IsApproved = c2s.ApprovedStartDate.HasValue && c2s.ApprovedEndDate.HasValue;
	        dc.IsApproved = true;
            return dc;
        }

	    public void CalculatePaidAmountInReportTimeSpan()
	    {
	        if (this.SupportConceptFinanceList != null)
	        {
	            foreach (var scRo in SupportConceptFinanceList)
	            {
	                if (scRo.Costbearer2Supportconcept != null)
	                {
	                    CalculatePaidAmountInReportTimeSpan(scRo, this.ReportStartDate ?? DateTime.MinValue, this.ReportEndDate ?? DateTime.MaxValue);
	                }
	            }
	        } 
        }
        // Mittlerweile kann man Rechnungen in der Rechnungsübersicht als "bezahlt" markieren. Zuvor wurden alle geschriebene Rechnungen in AmountPaidInReportTimeSpan
        // reingerechnet. Als Option kann man mit nurAlsBezahltMarkierte ausschließlich als "bezahlt" markierte mit einrechnen lassen
        public void CalculatePaidAmountInReportTimeSpan(bool nurAlsBezahltMarkierte)
        {
            if (this.SupportConceptFinanceList != null)
            {
                foreach (var scRo in SupportConceptFinanceList)
                {
                    if (scRo.Costbearer2Supportconcept != null)
                    {
                        CalculatePaidAmountInReportTimeSpan(scRo, this.ReportStartDate ?? DateTime.MinValue, this.ReportEndDate ?? DateTime.MaxValue, nurAlsBezahltMarkierte);
                    }
                }
            }
        }

        private void CalculatePaidAmountInReportTimeSpan(SupportConceptFinanceRO scRo, DateTime start, DateTime end)
        {
            CalculatePaidAmountInReportTimeSpan(scRo, start, end, false);
        }

        // Mittlerweile kann man Rechnungen in der Rechnungsübersicht als "bezahlt" markieren. Zuvor wurden alle geschriebene Rechnungen in AmountPaidInReportTimeSpan
        // reingerechnet. Als Option kann man mit nurAlsBezahltMarkierte ausschließlich als "bezahlt" markierte mit einrechnen lassen
        private void CalculatePaidAmountInReportTimeSpan(SupportConceptFinanceRO scRo, DateTime start, DateTime end, bool nurAlsBezahltMarkierte)
        {
            var c2s = DAOFactory.GenericDAO.LoadByID<CostBearer2SupportConcept>(scRo.Costbearer2Supportconcept
                .CostBearer2SupportConceptOid.Value);

            var bookingList = c2s.AccountingTransactions;
            bookingList = bookingList.Where(i => i.GueltigkeitsDatum.HasValue && i.GueltigkeitsDatum.Value.Date <= end && i.GueltigkeitsDatum >= start).ToList();

            decimal abschlZahlungen = 0;
            foreach (var item in bookingList)
            {
                abschlZahlungen += item.Amount;
            }

            DateTimeSpan span = new DateTimeSpan();
            span.StartDateTime = start;
            span.EndDateTime = end.AddDays(1).AddTicks(-1);

            decimal rechnungsBetrag = 0;

            //if (c2s.SupportConcept.Customer.Person.LastName.StartsWith("Art"))
            //{
            //    int test = 0;
            //}

            
            var invoices = DAOFactory.SearchDAO.GetServiceInvoices(c2s.Oid.Value, span);
            foreach (var i in invoices)
            {
                if (!nurAlsBezahltMarkierte)
                {
                    foreach (var sip in i.ServiceInvoicePeriodList)
                    {
                        rechnungsBetrag += sip.Claim ?? 0;
                    }
                }
                else
                {
                    if (i.InvoiceBase.IsPaid)
                    {
                        foreach (var sip in i.ServiceInvoicePeriodList)
                        {
                            rechnungsBetrag += sip.Claim ?? 0;
                        }
                    }
                }
            }
            
            scRo.AmountPaidInReportTimeSpan = abschlZahlungen + rechnungsBetrag;
        }
    }
}