zentraler export
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using System.Globalization;
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using ClosedXML.Excel;
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using TrafagSalesExporter.Models;
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namespace TrafagSalesExporter.Services;
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public class ManualExcelImportService : IManualExcelImportService
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{
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private static readonly Dictionary<string, string> HeaderMap = new(StringComparer.OrdinalIgnoreCase)
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{
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["extractiondate"] = nameof(SalesRecord.ExtractionDate),
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["tsc"] = nameof(SalesRecord.Tsc),
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["invoicenumber"] = nameof(SalesRecord.InvoiceNumber),
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["positiononinvoice"] = nameof(SalesRecord.PositionOnInvoice),
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["material"] = nameof(SalesRecord.Material),
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["name"] = nameof(SalesRecord.Name),
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["productgroup"] = nameof(SalesRecord.ProductGroup),
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["quantity"] = nameof(SalesRecord.Quantity),
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["suppliernumber"] = nameof(SalesRecord.SupplierNumber),
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["suppliername"] = nameof(SalesRecord.SupplierName),
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["suppliercountry"] = nameof(SalesRecord.SupplierCountry),
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["customernumber"] = nameof(SalesRecord.CustomerNumber),
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["customername"] = nameof(SalesRecord.CustomerName),
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["customercountry"] = nameof(SalesRecord.CustomerCountry),
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["customerindustry"] = nameof(SalesRecord.CustomerIndustry),
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["standardcost"] = nameof(SalesRecord.StandardCost),
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["standardcostcurrency"] = nameof(SalesRecord.StandardCostCurrency),
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["purchaseordernumber"] = nameof(SalesRecord.PurchaseOrderNumber),
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["salespricevalue"] = nameof(SalesRecord.SalesPriceValue),
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["salescurrency"] = nameof(SalesRecord.SalesCurrency),
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["incoterms2020"] = nameof(SalesRecord.Incoterms2020),
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["salesresponsibleemployee"] = nameof(SalesRecord.SalesResponsibleEmployee),
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["invoicedate"] = nameof(SalesRecord.InvoiceDate),
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["orderdate"] = nameof(SalesRecord.OrderDate),
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["land"] = nameof(SalesRecord.Land),
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["documenttype"] = nameof(SalesRecord.DocumentType)
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};
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public Task<List<SalesRecord>> ReadSalesRecordsAsync(string filePath, Site site)
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{
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using var workbook = new XLWorkbook(filePath);
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var worksheet = workbook.Worksheets.FirstOrDefault()
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?? throw new InvalidOperationException("Die Excel-Datei enthält kein Arbeitsblatt.");
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var usedRange = worksheet.RangeUsed()
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?? throw new InvalidOperationException("Die Excel-Datei enthält keine Daten.");
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var headerRow = usedRange.FirstRow();
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var headerIndexes = BuildHeaderIndexMap(headerRow);
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var rows = new List<SalesRecord>();
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foreach (var row in usedRange.RowsUsed().Skip(1))
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{
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if (IsRowEmpty(row))
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continue;
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rows.Add(new SalesRecord
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{
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ExtractionDate = ReadDate(headerIndexes, row, nameof(SalesRecord.ExtractionDate)) ?? DateTime.UtcNow,
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Tsc = ReadString(headerIndexes, row, nameof(SalesRecord.Tsc), site.TSC),
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InvoiceNumber = ReadString(headerIndexes, row, nameof(SalesRecord.InvoiceNumber)),
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PositionOnInvoice = (int)Math.Round(ReadDecimal(headerIndexes, row, nameof(SalesRecord.PositionOnInvoice))),
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Material = ReadString(headerIndexes, row, nameof(SalesRecord.Material)),
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Name = ReadString(headerIndexes, row, nameof(SalesRecord.Name)),
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ProductGroup = ReadString(headerIndexes, row, nameof(SalesRecord.ProductGroup)),
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Quantity = ReadDecimal(headerIndexes, row, nameof(SalesRecord.Quantity)),
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SupplierNumber = ReadString(headerIndexes, row, nameof(SalesRecord.SupplierNumber)),
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SupplierName = ReadString(headerIndexes, row, nameof(SalesRecord.SupplierName)),
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SupplierCountry = ReadString(headerIndexes, row, nameof(SalesRecord.SupplierCountry)),
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CustomerNumber = ReadString(headerIndexes, row, nameof(SalesRecord.CustomerNumber)),
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CustomerName = ReadString(headerIndexes, row, nameof(SalesRecord.CustomerName)),
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CustomerCountry = ReadString(headerIndexes, row, nameof(SalesRecord.CustomerCountry)),
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CustomerIndustry = ReadString(headerIndexes, row, nameof(SalesRecord.CustomerIndustry)),
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StandardCost = ReadDecimal(headerIndexes, row, nameof(SalesRecord.StandardCost)),
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StandardCostCurrency = ReadString(headerIndexes, row, nameof(SalesRecord.StandardCostCurrency)),
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PurchaseOrderNumber = ReadString(headerIndexes, row, nameof(SalesRecord.PurchaseOrderNumber)),
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SalesPriceValue = ReadDecimal(headerIndexes, row, nameof(SalesRecord.SalesPriceValue)),
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SalesCurrency = ReadString(headerIndexes, row, nameof(SalesRecord.SalesCurrency)),
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Incoterms2020 = ReadString(headerIndexes, row, nameof(SalesRecord.Incoterms2020)),
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SalesResponsibleEmployee = ReadString(headerIndexes, row, nameof(SalesRecord.SalesResponsibleEmployee)),
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InvoiceDate = ReadDate(headerIndexes, row, nameof(SalesRecord.InvoiceDate)),
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OrderDate = ReadDate(headerIndexes, row, nameof(SalesRecord.OrderDate)),
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Land = ReadString(headerIndexes, row, nameof(SalesRecord.Land), site.Land),
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DocumentType = ReadString(headerIndexes, row, nameof(SalesRecord.DocumentType))
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});
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}
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return Task.FromResult(rows);
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}
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private static Dictionary<string, int> BuildHeaderIndexMap(IXLRangeRow headerRow)
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{
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var result = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
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foreach (var cell in headerRow.CellsUsed())
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{
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var normalizedHeader = NormalizeHeader(cell.GetString());
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if (string.IsNullOrWhiteSpace(normalizedHeader))
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continue;
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if (HeaderMap.TryGetValue(normalizedHeader, out var targetField))
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result[targetField] = cell.Address.ColumnNumber;
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}
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if (!result.ContainsKey(nameof(SalesRecord.InvoiceNumber)))
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throw new InvalidOperationException("Die Excel-Datei hat nicht das erwartete Exportformat. Spalte 'Invoice Number' fehlt.");
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return result;
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}
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private static bool IsRowEmpty(IXLRangeRow row)
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=> row.CellsUsed().All(cell => string.IsNullOrWhiteSpace(cell.GetFormattedString()));
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private static string ReadString(Dictionary<string, int> headerIndexes, IXLRangeRow row, string fieldName, string fallback = "")
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{
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if (!headerIndexes.TryGetValue(fieldName, out var index))
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return fallback;
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var value = row.Cell(index).GetFormattedString().Trim();
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return string.IsNullOrWhiteSpace(value) ? fallback : value;
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}
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private static decimal ReadDecimal(Dictionary<string, int> headerIndexes, IXLRangeRow row, string fieldName)
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{
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if (!headerIndexes.TryGetValue(fieldName, out var index))
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return 0m;
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var cell = row.Cell(index);
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if (cell.TryGetValue<decimal>(out var decimalValue))
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return decimalValue;
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if (cell.TryGetValue<double>(out var doubleValue))
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return Convert.ToDecimal(doubleValue, CultureInfo.InvariantCulture);
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var text = cell.GetFormattedString().Trim();
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if (string.IsNullOrWhiteSpace(text))
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return 0m;
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if (decimal.TryParse(text, NumberStyles.Any, CultureInfo.InvariantCulture, out decimalValue))
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return decimalValue;
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if (decimal.TryParse(text, NumberStyles.Any, CultureInfo.GetCultureInfo("de-CH"), out decimalValue))
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return decimalValue;
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if (decimal.TryParse(text, NumberStyles.Any, CultureInfo.GetCultureInfo("de-DE"), out decimalValue))
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return decimalValue;
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return 0m;
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}
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private static DateTime? ReadDate(Dictionary<string, int> headerIndexes, IXLRangeRow row, string fieldName)
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{
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if (!headerIndexes.TryGetValue(fieldName, out var index))
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return null;
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var cell = row.Cell(index);
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if (cell.TryGetValue<DateTime>(out var dateValue))
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return dateValue;
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var text = cell.GetFormattedString().Trim();
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if (string.IsNullOrWhiteSpace(text))
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return null;
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var formats = new[]
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{
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"dd.MM.yyyy HH:mm:ss",
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"dd.MM.yyyy",
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"yyyy-MM-dd HH:mm:ss",
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"yyyy-MM-dd",
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"O"
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};
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if (DateTime.TryParseExact(text, formats, CultureInfo.InvariantCulture, DateTimeStyles.AssumeLocal, out dateValue))
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return dateValue;
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if (DateTime.TryParse(text, CultureInfo.GetCultureInfo("de-CH"), DateTimeStyles.AssumeLocal, out dateValue))
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return dateValue;
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if (DateTime.TryParse(text, CultureInfo.GetCultureInfo("de-DE"), DateTimeStyles.AssumeLocal, out dateValue))
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return dateValue;
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return null;
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}
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private static string NormalizeHeader(string value)
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{
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var chars = value
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.Where(char.IsLetterOrDigit)
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.Select(char.ToLowerInvariant)
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.ToArray();
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return new string(chars);
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}
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}
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