Nicolaj Hartmann
8096a19081
Backend (17 files): - VAT: REP 25% deductibility (§42), EU reverse charge double-entry (IEUV/IEUY/IVY), IVY rate 0%→25%, VatReport Box C/D populated, Basis1 from real revenue - SAF-T: correct OECD namespace, closing balance net calc, zero-amount fallback, credit note auto-numbering (§52) - Security: BankingController CSRF state token + company auth check, attachment canonical path traversal check, discount 0-100% validation, deactivated product/customer update guard - Quality: redact bank API logs, remove dead code (VatCalcService, PaymentMatchingService), CompanyAggregate IEmit interfaces, fix URL encoding Frontend (15 files): - Fix double "kr." in AmountText and Dashboard Statistic components - Fix UserSettings Switch defaultChecked desync with Form state - Remove dual useCompany/useCompanyStore pattern (Dashboard, Moms, Bank) - Correct SKAT VAT deadline calculation per period type - Add half-yearly/yearly VAT period options - Guard console.error with import.meta.env.DEV - Use shared formatDate in BankConnectionsTab - Remove dead NONE vatCode check, purge 7 legacy VAT codes from type union - Migrate S25→U25, K25→I25 across all pages Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
400 lines
15 KiB
C#
400 lines
15 KiB
C#
using System.Text;
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using System.Xml;
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using Books.Api.Saft.Models;
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namespace Books.Api.Saft.Services;
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/// <summary>
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/// Builds SAF-T DK compliant XML documents.
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/// Based on OECD SAF-T 2.0 with Danish customizations.
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/// </summary>
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public class SaftXmlBuilder
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{
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private const string SaftNamespace = "urn:OECD:StandardAuditFile-Taxation/2.00";
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/// <summary>
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/// Builds a SAF-T XML document from the provided data.
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/// </summary>
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public string Build(SaftDocument document)
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{
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var settings = new XmlWriterSettings
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{
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Indent = true,
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IndentChars = " ",
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Encoding = new UTF8Encoding(false), // UTF-8 without BOM
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OmitXmlDeclaration = false
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};
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using var stream = new MemoryStream();
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using (var writer = XmlWriter.Create(stream, settings))
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{
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writer.WriteStartDocument();
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writer.WriteStartElement("AuditFile", SaftNamespace);
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WriteHeader(writer, document.Header);
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WriteMasterFiles(writer, document.MasterFiles);
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WriteGeneralLedgerEntries(writer, document.Entries);
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writer.WriteEndElement(); // AuditFile
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writer.WriteEndDocument();
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}
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return Encoding.UTF8.GetString(stream.ToArray());
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}
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private static void WriteHeader(XmlWriter writer, SaftHeader header)
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{
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writer.WriteStartElement("Header");
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writer.WriteElementString("AuditFileVersion", header.AuditFileVersion);
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writer.WriteElementString("AuditFileCountry", "DK");
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writer.WriteElementString("AuditFileDateCreated", header.AuditFileDateCreated);
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writer.WriteElementString("SoftwareCompanyName", header.SoftwareCompanyName);
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writer.WriteElementString("SoftwareID", header.SoftwareID);
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writer.WriteElementString("SoftwareVersion", header.SoftwareVersion);
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// SAF-T requires DefaultCurrencyCode (ISO 4217)
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writer.WriteElementString("DefaultCurrencyCode", "DKK");
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WriteCompany(writer, header.Company);
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WriteSelectionCriteria(writer, header.SelectionCriteria);
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// SAF-T requires TaxAccountingBasis: A = Accrual, C = Cash, O = Other
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writer.WriteElementString("TaxAccountingBasis", "A");
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writer.WriteEndElement(); // Header
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}
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private static void WriteCompany(XmlWriter writer, SaftCompany company)
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{
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writer.WriteStartElement("Company");
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writer.WriteElementString("RegistrationNumber", company.RegistrationNumber);
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writer.WriteElementString("Name", company.Name);
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WriteAddress(writer, company.Address);
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if (company.Contact != null)
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{
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WriteContact(writer, company.Contact);
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}
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// SAF-T DK requires TaxRegistrationNumber with "DK" prefix + CVR
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if (!string.IsNullOrEmpty(company.RegistrationNumber))
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{
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writer.WriteElementString("TaxRegistrationNumber", "DK" + company.RegistrationNumber);
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}
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writer.WriteEndElement(); // Company
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}
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private static void WriteAddress(XmlWriter writer, SaftAddress address)
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{
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writer.WriteStartElement("Address");
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if (!string.IsNullOrEmpty(address.StreetName))
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writer.WriteElementString("StreetName", address.StreetName);
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if (!string.IsNullOrEmpty(address.City))
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writer.WriteElementString("City", address.City);
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if (!string.IsNullOrEmpty(address.PostalCode))
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writer.WriteElementString("PostalCode", address.PostalCode);
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writer.WriteElementString("Country", address.Country);
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writer.WriteEndElement(); // Address
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}
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private static void WriteContact(XmlWriter writer, SaftContact contact)
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{
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writer.WriteStartElement("Contact");
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if (!string.IsNullOrEmpty(contact.Telephone))
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writer.WriteElementString("Telephone", contact.Telephone);
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if (!string.IsNullOrEmpty(contact.Email))
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writer.WriteElementString("Email", contact.Email);
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if (!string.IsNullOrEmpty(contact.Website))
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writer.WriteElementString("Website", contact.Website);
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writer.WriteEndElement(); // Contact
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}
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private static void WriteSelectionCriteria(XmlWriter writer, SaftSelectionCriteria criteria)
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{
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writer.WriteStartElement("SelectionCriteria");
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writer.WriteElementString("PeriodStart", criteria.PeriodStart);
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writer.WriteElementString("PeriodEnd", criteria.PeriodEnd);
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writer.WriteEndElement(); // SelectionCriteria
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}
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private static void WriteMasterFiles(XmlWriter writer, SaftMasterFiles masterFiles)
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{
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writer.WriteStartElement("MasterFiles");
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WriteGeneralLedgerAccounts(writer, masterFiles.GeneralLedgerAccounts);
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WriteCustomers(writer, masterFiles.Customers);
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WriteSuppliers(writer, masterFiles.Suppliers);
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WriteTaxTable(writer);
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writer.WriteEndElement(); // MasterFiles
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}
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/// <summary>
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/// Writes the TaxTable element declaring all Danish VAT codes.
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/// Required by SAF-T schema to describe the tax codes used in transactions.
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/// </summary>
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private static void WriteTaxTable(XmlWriter writer)
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{
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writer.WriteStartElement("TaxTable");
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writer.WriteStartElement("TaxTableEntry");
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writer.WriteElementString("TaxType", "MVA");
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writer.WriteElementString("Description", "Dansk moms (VAT)");
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// Output VAT codes
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WriteTaxCodeDetails(writer, "U25", "Udgående moms 25%", 25.00m);
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WriteTaxCodeDetails(writer, "UEU", "EU-salg (momsfrit)", 0.00m);
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WriteTaxCodeDetails(writer, "UEXP", "Eksport uden for EU (momsfrit)", 0.00m);
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// Input VAT codes
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WriteTaxCodeDetails(writer, "I25", "Indgående moms 25%", 25.00m);
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WriteTaxCodeDetails(writer, "IEUV", "EU-erhvervelse varer (reverse charge)", 25.00m);
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WriteTaxCodeDetails(writer, "IEUY", "EU-erhvervelse ydelser (reverse charge)", 25.00m);
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WriteTaxCodeDetails(writer, "IVV", "Import varer fra verden", 0.00m);
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WriteTaxCodeDetails(writer, "IVY", "Import ydelser fra verden (reverse charge)", 25.00m);
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// Special codes
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WriteTaxCodeDetails(writer, "REP", "Repræsentation (25% fradrag)", 25.00m);
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WriteTaxCodeDetails(writer, "INGEN", "Ingen moms", 0.00m);
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writer.WriteEndElement(); // TaxTableEntry
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writer.WriteEndElement(); // TaxTable
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}
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private static void WriteTaxCodeDetails(XmlWriter writer, string taxCode, string description, decimal taxPercentage)
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{
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writer.WriteStartElement("TaxCodeDetails");
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writer.WriteElementString("TaxCode", taxCode);
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writer.WriteElementString("Description", description);
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writer.WriteElementString("TaxPercentage", FormatDecimal(taxPercentage));
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writer.WriteEndElement(); // TaxCodeDetails
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}
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private static void WriteGeneralLedgerAccounts(XmlWriter writer, List<SaftAccount> accounts)
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{
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if (accounts.Count == 0) return;
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writer.WriteStartElement("GeneralLedgerAccounts");
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// SAF-T DK 2027 requirement: StandardAccount metadata
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// Ref: BEK nr. 97 af 26/01/2023, Erhvervsstyrelsen
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writer.WriteElementString("NameOfStandardAccount", "Standardkontoplan");
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writer.WriteElementString("VersionOfStandardAccount", "20230131");
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foreach (var account in accounts)
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{
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writer.WriteStartElement("Account");
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writer.WriteElementString("AccountID", account.AccountID);
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writer.WriteElementString("AccountDescription", account.AccountDescription);
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if (!string.IsNullOrEmpty(account.StandardAccountID))
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writer.WriteElementString("StandardAccountID", account.StandardAccountID);
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writer.WriteElementString("AccountType", account.AccountType);
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// Opening balances (SAF-T schema requires these elements even when zero)
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writer.WriteElementString("OpeningDebitBalance", FormatDecimal(account.OpeningDebitBalance));
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writer.WriteElementString("OpeningCreditBalance", FormatDecimal(account.OpeningCreditBalance));
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// Closing balances (SAF-T schema requires these elements even when zero)
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writer.WriteElementString("ClosingDebitBalance", FormatDecimal(account.ClosingDebitBalance));
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writer.WriteElementString("ClosingCreditBalance", FormatDecimal(account.ClosingCreditBalance));
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writer.WriteEndElement(); // Account
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}
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writer.WriteEndElement(); // GeneralLedgerAccounts
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}
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private static void WriteCustomers(XmlWriter writer, List<SaftCustomer> customers)
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{
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if (customers.Count == 0) return;
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writer.WriteStartElement("Customers");
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foreach (var customer in customers)
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{
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writer.WriteStartElement("Customer");
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writer.WriteElementString("CustomerID", customer.CustomerID);
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if (!string.IsNullOrEmpty(customer.AccountID))
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writer.WriteElementString("AccountID", customer.AccountID);
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writer.WriteElementString("Name", customer.Name);
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if (!string.IsNullOrEmpty(customer.RegistrationNumber))
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writer.WriteElementString("RegistrationNumber", customer.RegistrationNumber);
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if (customer.Address != null)
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WriteAddress(writer, customer.Address);
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if (customer.Contact != null)
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WriteContact(writer, customer.Contact);
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writer.WriteEndElement(); // Customer
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}
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writer.WriteEndElement(); // Customers
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}
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private static void WriteSuppliers(XmlWriter writer, List<SaftSupplier> suppliers)
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{
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if (suppliers.Count == 0) return;
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writer.WriteStartElement("Suppliers");
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foreach (var supplier in suppliers)
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{
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writer.WriteStartElement("Supplier");
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writer.WriteElementString("SupplierID", supplier.SupplierID);
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if (!string.IsNullOrEmpty(supplier.AccountID))
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writer.WriteElementString("AccountID", supplier.AccountID);
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writer.WriteElementString("Name", supplier.Name);
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if (!string.IsNullOrEmpty(supplier.RegistrationNumber))
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writer.WriteElementString("RegistrationNumber", supplier.RegistrationNumber);
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if (supplier.Address != null)
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WriteAddress(writer, supplier.Address);
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if (supplier.Contact != null)
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WriteContact(writer, supplier.Contact);
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writer.WriteEndElement(); // Supplier
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}
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writer.WriteEndElement(); // Suppliers
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}
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private static void WriteGeneralLedgerEntries(XmlWriter writer, SaftGeneralLedgerEntries entries)
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{
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writer.WriteStartElement("GeneralLedgerEntries");
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writer.WriteElementString("NumberOfEntries", entries.NumberOfEntries.ToString());
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writer.WriteElementString("TotalDebit", FormatDecimal(entries.TotalDebit));
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writer.WriteElementString("TotalCredit", FormatDecimal(entries.TotalCredit));
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foreach (var journal in entries.Journals)
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{
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WriteJournal(writer, journal);
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}
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writer.WriteEndElement(); // GeneralLedgerEntries
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}
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private static void WriteJournal(XmlWriter writer, SaftJournal journal)
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{
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writer.WriteStartElement("Journal");
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writer.WriteElementString("JournalID", journal.JournalID);
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writer.WriteElementString("Description", journal.Description);
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writer.WriteElementString("Type", journal.Type);
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foreach (var transaction in journal.Transactions)
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{
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WriteTransaction(writer, transaction);
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}
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writer.WriteEndElement(); // Journal
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}
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private static void WriteTransaction(XmlWriter writer, SaftTransaction transaction)
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{
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writer.WriteStartElement("Transaction");
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writer.WriteElementString("TransactionID", transaction.TransactionID);
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writer.WriteElementString("Period", transaction.Period);
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writer.WriteElementString("TransactionDate", transaction.TransactionDate);
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writer.WriteElementString("Description", transaction.Description);
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writer.WriteElementString("SystemEntryDate", transaction.SystemEntryDate);
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writer.WriteElementString("GLPostingDate", transaction.GLPostingDate);
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foreach (var line in transaction.Lines)
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{
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WriteTransactionLine(writer, line);
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}
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writer.WriteEndElement(); // Transaction
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}
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private static void WriteTransactionLine(XmlWriter writer, SaftTransactionLine line)
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{
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writer.WriteStartElement("Line");
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writer.WriteElementString("RecordID", line.RecordID);
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writer.WriteElementString("AccountID", line.AccountID);
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if (!string.IsNullOrEmpty(line.Description))
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writer.WriteElementString("Description", line.Description);
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// SAF-T schema requires at least one of DebitAmount or CreditAmount
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var hasDebit = line.DebitAmount.HasValue && line.DebitAmount.Value != 0;
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var hasCredit = line.CreditAmount.HasValue && line.CreditAmount.Value != 0;
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if (hasDebit)
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writer.WriteElementString("DebitAmount", FormatDecimal(line.DebitAmount!.Value));
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if (hasCredit)
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writer.WriteElementString("CreditAmount", FormatDecimal(line.CreditAmount!.Value));
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// If neither has a value, write a zero debit to satisfy schema requirement
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if (!hasDebit && !hasCredit)
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writer.WriteElementString("DebitAmount", FormatDecimal(0m));
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if (!string.IsNullOrEmpty(line.CustomerID))
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writer.WriteElementString("CustomerID", line.CustomerID);
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if (!string.IsNullOrEmpty(line.SupplierID))
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writer.WriteElementString("SupplierID", line.SupplierID);
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if (line.TaxInfo != null)
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{
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WriteTaxInformation(writer, line.TaxInfo);
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}
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writer.WriteEndElement(); // Line
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}
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private static void WriteTaxInformation(XmlWriter writer, SaftTaxInformation taxInfo)
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{
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writer.WriteStartElement("TaxInformation");
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writer.WriteElementString("TaxCode", taxInfo.TaxCode);
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if (taxInfo.TaxPercentage.HasValue)
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writer.WriteElementString("TaxPercentage", FormatDecimal(taxInfo.TaxPercentage.Value));
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if (taxInfo.TaxBase.HasValue)
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writer.WriteElementString("TaxBase", FormatDecimal(taxInfo.TaxBase.Value));
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writer.WriteElementString("TaxAmount", FormatDecimal(taxInfo.TaxAmount));
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writer.WriteEndElement(); // TaxInformation
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}
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private static string FormatDecimal(decimal value)
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{
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// SAF-T requires decimal format with dot as decimal separator
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return value.ToString("0.00", System.Globalization.CultureInfo.InvariantCulture);
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}
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}
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