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

namespace PsychosozialeProjekteSaarpfalz.Invoicing
{

	public class CustomInvoiceCreation : InvoiceCreation
    {
        private DateTime? accountingPeriodStart = null;
        private DateTime? accountingPeriodEnd = null;
        private decimal AMOUNT_PER_KM1 = 6.12m;
        private decimal AMOUNT_PER_KM2 = 8.58m;


        public override void SetInvoiceBaseData(int invoiceCounter, ServiceInvoice invoice, CostBearer costBearer, DateTimeSpan invoicePeriod,
            IList<CompactSupportConceptDC> supportConceptList)
        {
            if (invoicePeriod != null)
            {
                accountingPeriodStart = invoicePeriod.StartDate;
                accountingPeriodEnd = invoicePeriod.EndDate;
            }
            base.SetInvoiceBaseData(invoiceCounter, invoice, costBearer, invoicePeriod, supportConceptList);
        }

        public override void SetInvoiceId(ServiceInvoice invoice)
		{
			invoice.InvoiceBase.InvoiceId = "Sozio";
            invoice.InvoiceBase.InvoiceTypeText = "Soziotherapie";
		}

        public override void SetServiceInvoicePeriods(ServiceInvoice invoice, CostBearer2SupportConcept c2s, DateTimeSpan invoicePeriod, List<ServiceRecordDC> serviceRecords)
        {
            base.SetServiceInvoicePeriods(invoice, c2s, invoicePeriod, serviceRecords);
        }

        public override IList<InvoiceItem> CreateInvoiceItems(List<ServiceRecordDC> serviceRecordsInPeriod, DateTimeSpan invoicePeriod, SupportConceptApprovalPeriod scap, Calculations calc)
        {
            var preise = DAOFactory.GenericDAO.GetAllActive<Preis>();
            var pauschVar = GetPreis(preise, "Fahrtpauschale 1", (DateTime)accountingPeriodStart);
            if (pauschVar != 0)
            {
                AMOUNT_PER_KM1 = pauschVar;
            }
            pauschVar = 0;
            pauschVar = GetPreis(preise, "Fahrtpauschale 2", (DateTime)accountingPeriodStart);
            if (pauschVar != 0)
            {
                AMOUNT_PER_KM2 = pauschVar;
            }

            var list = base.CreateInvoiceItems(serviceRecordsInPeriod, invoicePeriod, scap, calc);

            return list;
        }

        public override InvoiceItem CreateInvoiceItem(ServiceRecordDC iServiceRecord, SupportConceptApprovalPeriod scap, Calculations calc)
        {
            //if (!iServiceRecord.ServiceDescription.CategoryName.ToLower().Contains("assistenz"))
            //    return null;

            var ii = base.CreateInvoiceItem(iServiceRecord, scap, calc);
            DateTime start = ii.ItemPeriodStart.Value;
            ii.ApprovedPerUnit= iServiceRecord.RoundedDuration;
            ii.ItemPeriodStart = iServiceRecord.Start;
            if (iServiceRecord.DistanceInMeter.HasValue && iServiceRecord.DistanceInMeter > 0)
            {
                if (iServiceRecord.DistanceInMeter <= 15)
                {
                    ii.UnitDescription = String.Format("{0:0.00 €}", AMOUNT_PER_KM1);
                    ii.GrossAmountTotal += AMOUNT_PER_KM1;
                }
                else if (iServiceRecord.DistanceInMeter > 15)
                {
                    ii.UnitDescription = String.Format("{0:0.00 €}", AMOUNT_PER_KM2);
                    ii.GrossAmountTotal += AMOUNT_PER_KM2;
                }
            }
            return ii;
        }

        public override IList<InvoiceItem> CreateSummaryInvoiceItems(IList<InvoiceItem> itemList, DateTimeSpan invoicePeriod, SupportConceptApprovalPeriod scap, Calculations calc)
        {
            return itemList;
        }

        private static decimal GetPreis(IList<Preis> allePreise, String name, DateTime datum)
        {

            var pausch = allePreise.Where(p => p.Name.Contains(name)).FirstOrDefault();
            if (pausch != null)
            {
                var crlist = MapperFactory.CostRatePeriodDC_CostRatePeriod.MapToNewDCs(pausch.CostRatePeriods);

                var cr = crlist.GetCostRatePeriodForDate(CostRatePeriodType.AmountOfMoney, datum);
                if (cr != null && cr.CostRateValue.HasValue)
                {
                    return cr.CostRateValue.Value;
                }
            }

            return 0;
        }
    }
}