using BeWo.Data.Access;
using BeWo.Data.Entities;
using BeWo.Data.Models.XRechnung;
using BeWo.Service.Core;
using BeWo.Service.DCEntityMapper;
using BeWo.Service.ServiceImplementations;
using BeWo.Service.ServiceProxy;
using BeWo.Service.ServiceUtils;
using BS.Shared;
using BS.Shared.Core;
using BS.Shared.DataContracts;
using BS.Shared.DataContracts.MikePHPContracts;
using BS.Shared.Interface;
using DevExpress.Export;
using DevExpress.Utils.Filtering.Internal;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace BeWo.Service.Plugins
{
	public class XRechnungService : AbstractIDSpecificDefaultClass<XRechnungService>
	{
		private readonly LocalTenantFileStorageDAO _storage;
		private readonly GenericDAO _genericDAO;
		private readonly FileLogger _logger;

		public XRechnungService()
		{
			// Hole Storage
			var lStoragePath = MergedConfig.GetSetting(WebConfigSetting.StoredTenantFilesFolderPath);
			_storage = DAOFactory.GetLocalTenantFileStorage(lStoragePath);

			_genericDAO = DAOFactory.GenericDAO;
			_logger = ServiceHelper.CoreLogger;
		}

		public ApiResponse<Tuple<StoredFileDC, byte[]>> GetXRechnung(long invoice_base_oid, int report_type, string report_url)
		{
			var invoice_base = _genericDAO.LoadByID<InvoiceBase>(invoice_base_oid);
			var stored_file = invoice_base.XRechnungStoredFile;

			// Falls Lokal vorhanden, gebe lokale Version zurück
			if (stored_file?.FileName is string lFileName && tryGetXRechnungLocal(_storage, lFileName, out var bytes))
			{
				var stored_file_dc = MapperFactory.StoredFile.MapToNewDC(stored_file);
				return ApiResponse<Tuple<StoredFileDC, byte[]>>.SuccessResponse(new Tuple<StoredFileDC, byte[]>(stored_file_dc, bytes));
			}

			// Lokal nicht vorhanden, berechne XRechnung
			var str = //ServiceConfigReader.GetInvoiceTestJsonString();
				calculate(invoice_base);

			str = str.Replace("19.0", "19");
			str = str.Replace("76.0", "76");


			// Erstelle Url ohne weitere Authentifizierung
			var token_url = GetTokenUrl(report_url);

			return requestXRechnung(_storage, invoice_base, str, token_url);
		}

		private ApiResponse<Tuple<StoredFileDC, byte[]>> requestXRechnung(LocalTenantFileStorageDAO pStorage, InvoiceBase invoice_base, object obj, string token_url)
		{
			var response = ServiceFacade.XRechnung.Create(obj, token_url);

			var final_response = new ApiResponse<Tuple<StoredFileDC, byte[]>>();
			ApiResponse<byte[]>.CopyTo(response, final_response);

			var lFileName = pStorage.GetXRechnungFileName(invoice_base.Oid.Value);

			if (response.Success)
			{
				try
				{
					var bytes = response.Data;
					StoredFile stored_file = null;
					using (MemoryStream ms = new MemoryStream(bytes))
					{
						stored_file = pStorage.SaveHybridFile(BWPFeature.XRechnung, lFileName, "application/pdf", ms, TableID.InvoiceBase, invoice_base.Oid.Value);

						invoice_base.XRechnungStoredFile = stored_file;

						_genericDAO.Update(invoice_base);
					}

					var stored_file_dc = MapperFactory.StoredFile.MapToNewDC(stored_file);
					final_response.Data = new Tuple<StoredFileDC, byte[]>(stored_file_dc, bytes);
				}
				catch (Exception ex)
				{
					try
					{
						_logger.LogError(ex, nameof(GetXRechnung));
					}
					catch (Exception ex2)
					{
						response.ErrorStrings.Add("AccountingEnhancedServiceImp - CoreLogger: " + ex2.ToString());
					}
					response.ErrorStrings.Add("AccountingEnhancedServiceImp: " + ex.ToString());
				}
			}

			return final_response;
		}

		private string GetTokenUrl(string report_url)
		{
			string download_url;
			if (report_url.IndexOf("localhost") < 0)
				download_url = report_url + "&mode=pdf";
			else
				download_url = "https://app5.bewoplaner.de/service/ApiStreamService.svc/GetPdf";
			return new DownloadServiceImp().CreateTemporaryUrl(download_url, false);
		}


		private bool tryGetXRechnungLocal(LocalTenantFileStorageDAO pStorage, string pFileName, out byte[] bytes)
		{
			bytes = null;

			// Hole StoredFile aus DB
			var lFile = pStorage.GetStoredFile(BWPFeature.XRechnung, pFileName);
			if (lFile is null)
				return false;

			using (Stream file_stream = pStorage.GetFileContent(lFile))
			{
				if (file_stream is null) return false;

				using (MemoryStream ms = new MemoryStream())
				{
					file_stream.CopyTo(ms);
					bytes = ms.ToArray();
				}
			}
			return true;
		}

		private string calculate(InvoiceBase invoice)
		{
			var undefinded = "??undefinded??";
			var undefinded_num = -1;
			var undefinded_num2 = 1001;
			var undefinded_num3 = 58;

			XRechnung xRechnung = new XRechnung();

			xRechnung.Invoice.Type = (invoice.InvoiceTypeText?.StartsWith("storno", StringComparison.OrdinalIgnoreCase) ?? false) ? "384" : "380";
			xRechnung.Invoice.Number = invoice.InvoiceNumber;
			xRechnung.Invoice.Date = invoice.InvoiceDate?.ToString("yyyyMMdd") ?? undefinded;
			xRechnung.Invoice.Currency = "EUR";
			xRechnung.Invoice.Notice = invoice.Notice;
			xRechnung.Invoice.CancellationNumber = "";
			xRechnung.Invoice.Period.Start = invoice.AccountingPeriodStart?.ToString("yyyyMMdd") ?? undefinded;
			xRechnung.Invoice.Period.End = invoice.AccountingPeriodEnd?.ToString("yyyyMMdd") ?? undefinded;
			xRechnung.Invoice.Period.Description = String.Format("Leistungszeitraum {0:dd.MM.yyyy} bis {1:dd.MM.yyyy}", invoice.AccountingPeriodStart, invoice.AccountingPeriodEnd);
			xRechnung.Invoice.Payment.Type = undefinded_num3;
			xRechnung.Invoice.Payment.Term = "Zahlbar innerhalb 14 Tagen netto";
			xRechnung.Invoice.Payment.DueDate = invoice.InvoiceDate?.AddDays(14).ToString("yyyyMMdd") ?? undefinded;

			xRechnung.Seller.Name = "Muster GmbH";
			xRechnung.Seller.ID = null;
			xRechnung.Seller.TaxID = null;
			xRechnung.Seller.VatID = "DE123456789";
			xRechnung.Seller.Street = "Musterstr. 1-3";
			xRechnung.Seller.ZipCode = "30674";
			xRechnung.Seller.City = "Frankfurt";
			xRechnung.Seller.EMail = "rechnungen@musterfirma.de";
			xRechnung.Seller.CountryCode = "DE";
			xRechnung.Seller.Contact.Name = "Peter Musterfrau";
			xRechnung.Seller.Contact.Department = "Buchhaltung";
			xRechnung.Seller.Contact.Phone = "+49211171717";
			xRechnung.Seller.Contact.EMail = "pm@muster.de";
			xRechnung.Seller.BankAccount.IBAN = "DE38370501980147522957";
			xRechnung.Seller.BankAccount.BIC = "SSKMDEMMXXX";
			xRechnung.Seller.BankAccount.Owner = "Muster GmbH";
			xRechnung.Seller.BankAccount.Reference = "z.B. Rechnungnummer";
			xRechnung.Seller.BankAccount.ReferenceID = "GläubigerID";

			Address rechnungsAdresse = null;
			if (invoice.RecipientOrganisationOid.HasValue)
            {
				var org = DAOFactory.GenericDAO.LoadByID<Organisation>(invoice.RecipientOrganisationOid.Value);
				rechnungsAdresse = org.InvoiceAddress ?? org.Address;
            }
			else if (invoice.RecipientCustomerOid.HasValue)
            {
				var customer = DAOFactory.GenericDAO.LoadByID<Customer>(invoice.RecipientCustomerOid.Value);
				rechnungsAdresse = customer.Person.InvoiceAddress ?? customer.Person.Address;
			}
			
			xRechnung.Buyer.ID = null;

			if (rechnungsAdresse != null)
            {
				xRechnung.Buyer.Street = rechnungsAdresse.Street;
				xRechnung.Buyer.ZipCode = rechnungsAdresse.PostalCode;
				xRechnung.Buyer.City = rechnungsAdresse.Town;
				xRechnung.Buyer.CountryCode = "DE";
			}
			
			xRechnung.Buyer.EMail = "rechnungen@kunde.de";
			
			xRechnung.Buyer.Reference = "PO-Nummer oder andere Referenz, die Kunde haben will";

			xRechnung.Buyer.BankAccount.IBAN = "DE38370501980147522957";
			xRechnung.Buyer.BankAccount.BIC = "SSKMDEMMXXX";
			xRechnung.Buyer.BankAccount.Owner = "Muster GmbH";
			xRechnung.Buyer.BankAccount.MandateID = "Mandatsreferenznummer";

			foreach (var item in invoice.GetInvoiceItems())
			{
				var position = new XRPosition();

				position.Quantity = item.UnitCount ?? 0;
				position.QuantityType = "H87";
				position.Text = item.ItemDescription;
				position.Net = item.AmountPerUnit ?? 0;
				position.NetTotal = item.AmountTotal ?? 0;
				position.Tax = 0;
				position.TaxSum = 0;
				position.TaxType = "S";

				xRechnung.Position.Add(position);
			}

			return JsonConvert.SerializeObject(xRechnung);
		}
	}
}