Clarify processed merge audit CSV filenames

TrafagSalesExporter/Components/Pages/Settings.razor

@@ -313,8 +313,8 @@
                     <MudItem xs="12" md="4">
                         <MudSwitch @bind-Value="_exportSettings.AuditCsvEnabled" Label="@T("Audit-CSV je Standort schreiben", "Write audit CSV per site")" Color="Color.Primary" />
                         <MudText Typo="Typo.caption">
-                            @T("Schreibt beim Laenderexport je Standort eine Sales_*.csv mit den transformierten Daten.",
+                            @T("Schreibt beim Laenderexport je Standort eine Sales_ProcessedMergeInput_*.csv mit den transformierten Daten.",
-                               "Writes one Sales_*.csv per site during country export with the transformed data.")
+                               "Writes one Sales_ProcessedMergeInput_*.csv per site during country export with the transformed data.")
                         </MudText>
                     </MudItem>
                     <MudItem xs="12" md="4">
@@ -351,6 +351,7 @@
     </MudText>
     <MudText Typo="Typo.caption" Class="mt-1">
         @T("Beispiel:", "Example:") Sales_TRFR_@(DateTime.Now.ToString("yyyy-MM-dd")).xlsx
+        / Sales_ProcessedMergeInput_TRFR_@(DateTime.Now.ToString("yyyy-MM-dd")).csv
     </MudText>
 </MudPaper>
 

TrafagSalesExporter/Services/CentralSalesDataProvider.cs

@@ -38,7 +38,7 @@ public sealed class CentralSalesDataProvider : ICentralSalesDataProvider
         {
             var directory = _auditCsvService.ResolveAuditCsvDirectory(settings);
             throw new InvalidOperationException(
-                $"Audit-CSV ist als zentrale Quelle aktiv, aber im Ordner '{directory}' wurden keine Sales_*.csv-Dateien gefunden.");
+                $"Audit-CSV ist als zentrale Quelle aktiv, aber im Ordner '{directory}' wurden keine Sales_ProcessedMergeInput_*.csv-Dateien gefunden.");
         }
 
         return records

TrafagSalesExporter/Services/ExportAuditCsvService.cs

@@ -21,6 +21,8 @@ public interface IExportAuditCsvService
 public sealed class ExportAuditCsvService : IExportAuditCsvService
 {
     private const char Delimiter = ';';
+    private const string ProcessedMergeInputFilePrefix = "Sales_ProcessedMergeInput_";
+    private const string LegacyFilePrefix = "Sales_";
 
     private static readonly string[] Headers =
     [
@@ -84,7 +86,7 @@ public sealed class ExportAuditCsvService : IExportAuditCsvService
         Directory.CreateDirectory(directory);
 
         var tsc = string.IsNullOrWhiteSpace(site.TSC) ? "UNKNOWN" : site.TSC.Trim();
-        var fileName = $"Sales_{SanitizeFileNamePart(tsc)}_{DateTime.UtcNow:yyyy-MM-dd}.csv";
+        var fileName = $"{ProcessedMergeInputFilePrefix}{SanitizeFileNamePart(tsc)}_{DateTime.UtcNow:yyyy-MM-dd}.csv";
         var path = Path.Combine(directory, fileName);
 
         await using var stream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read);
@@ -105,12 +107,16 @@ public sealed class ExportAuditCsvService : IExportAuditCsvService
         if (!Directory.Exists(directory))
             return [];
 
-        var latestFiles = Directory.EnumerateFiles(directory, "Sales_*.csv", SearchOption.TopDirectoryOnly)
+        var latestFiles = EnumerateAuditCsvFiles(directory)
-            .GroupBy(ResolveTscFromFileName, StringComparer.OrdinalIgnoreCase)
+            .Select(path => new { Path = path, Tsc = ResolveTscFromFileName(path) })
+            .Where(file => !string.IsNullOrWhiteSpace(file.Tsc))
+            .GroupBy(file => file.Tsc, StringComparer.OrdinalIgnoreCase)
             .Select(group => group
-                .OrderByDescending(File.GetLastWriteTimeUtc)
+                .OrderByDescending(file => File.GetLastWriteTimeUtc(file.Path))
-                .ThenByDescending(Path.GetFileName, StringComparer.OrdinalIgnoreCase)
+                .ThenByDescending(file => IsProcessedMergeInputFile(file.Path))
-                .First())
+                .ThenByDescending(file => Path.GetFileName(file.Path), StringComparer.OrdinalIgnoreCase)
+                .First()
+                .Path)
             .OrderBy(path => path, StringComparer.OrdinalIgnoreCase)
             .ToList();
 
@@ -257,14 +263,29 @@ public sealed class ExportAuditCsvService : IExportAuditCsvService
     private static string ResolveTscFromFileName(string path)
     {
         var name = Path.GetFileNameWithoutExtension(path);
-        if (!name.StartsWith("Sales_", StringComparison.OrdinalIgnoreCase))
+        if (name.StartsWith(ProcessedMergeInputFilePrefix, StringComparison.OrdinalIgnoreCase))
-            return name;
+            return ResolveTscFromSuffix(name[ProcessedMergeInputFilePrefix.Length..]);
 
-        var withoutPrefix = name["Sales_".Length..];
+        if (name.StartsWith(LegacyFilePrefix, StringComparison.OrdinalIgnoreCase))
-        var lastUnderscore = withoutPrefix.LastIndexOf('_');
+            return ResolveTscFromSuffix(name[LegacyFilePrefix.Length..]);
-        return lastUnderscore <= 0 ? withoutPrefix : withoutPrefix[..lastUnderscore];
+
+        return string.Empty;
     }
 
+    private static string ResolveTscFromSuffix(string suffix)
+    {
+        var lastUnderscore = suffix.LastIndexOf('_');
+        return lastUnderscore <= 0 ? suffix : suffix[..lastUnderscore];
+    }
+
+    private static IEnumerable<string> EnumerateAuditCsvFiles(string directory)
+        => Directory.EnumerateFiles(directory, $"{ProcessedMergeInputFilePrefix}*.csv", SearchOption.TopDirectoryOnly)
+            .Concat(Directory.EnumerateFiles(directory, $"{LegacyFilePrefix}*.csv", SearchOption.TopDirectoryOnly)
+                .Where(path => !IsProcessedMergeInputFile(path)));
+
+    private static bool IsProcessedMergeInputFile(string path)
+        => Path.GetFileName(path).StartsWith(ProcessedMergeInputFilePrefix, StringComparison.OrdinalIgnoreCase);
+
     private static string SanitizeFileNamePart(string value)
     {
         var invalid = Path.GetInvalidFileNameChars();

TrafagSalesExporter/Services/UiTextService.cs

@@ -254,7 +254,8 @@ public sealed class UiTextService : IUiTextService
                 ["Transformer Ansicht"] = "Vista de transformaciones",
                 ["Transformationscode"] = "Código de transformación",
                 ["Keine Beschreibung."] = "Sin descripción.",
-                ["Optionales Argument."] = "Argumento opcional."
+                ["Optionales Argument."] = "Argumento opcional.",
+                ["Schreibt beim Laenderexport je Standort eine Sales_ProcessedMergeInput_*.csv mit den transformierten Daten."] = "Escribe una Sales_ProcessedMergeInput_*.csv por sitio durante la exportacion de paises con los datos transformados."
             },
             ["it"] = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
             {
@@ -487,7 +488,8 @@ public sealed class UiTextService : IUiTextService
                 ["Transformer Ansicht"] = "Vista trasformazioni",
                 ["Transformationscode"] = "Codice trasformazione",
                 ["Keine Beschreibung."] = "Nessuna descrizione.",
-                ["Optionales Argument."] = "Argomento opzionale."
+                ["Optionales Argument."] = "Argomento opzionale.",
+                ["Schreibt beim Laenderexport je Standort eine Sales_ProcessedMergeInput_*.csv mit den transformierten Daten."] = "Scrive una Sales_ProcessedMergeInput_*.csv per sito durante l'esportazione dei Paesi con i dati trasformati."
             },
             ["hi"] = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
             {
@@ -720,7 +722,8 @@ public sealed class UiTextService : IUiTextService
                 ["Transformer Ansicht"] = "रूपांतरण दृश्य",
                 ["Transformationscode"] = "रूपांतरण कोड",
                 ["Keine Beschreibung."] = "कोई विवरण नहीं.",
-                ["Optionales Argument."] = "वैकल्पिक तर्क."
+                ["Optionales Argument."] = "वैकल्पिक तर्क.",
+                ["Schreibt beim Laenderexport je Standort eine Sales_ProcessedMergeInput_*.csv mit den transformierten Daten."] = "Writes one Sales_ProcessedMergeInput_*.csv per site during country export with the transformed data."
             }
         };
 

TrafagSalesExporter/TrafagSalesExporter.Tests/ExportAuditCsvServiceTests.cs

@@ -67,6 +67,7 @@ public sealed class ExportAuditCsvServiceTests : IDisposable
 
         Assert.True(File.Exists(path));
         Assert.Equal(_tempDirectory, Path.GetDirectoryName(path));
+        Assert.StartsWith("Sales_ProcessedMergeInput_TRCH_", Path.GetFileName(path), StringComparison.OrdinalIgnoreCase);
         var records = await service.ReadLatestSiteAuditCsvRecordsAsync(settings);
         var roundtrip = Assert.Single(records);
         Assert.Equal("SAP", roundtrip.SourceSystem);
@@ -80,6 +81,62 @@ public sealed class ExportAuditCsvServiceTests : IDisposable
         Assert.Equal(new DateTime(2026, 6, 11), roundtrip.InvoiceDate);
     }
 
+    [Fact]
+    public async Task ReadLatestSiteAuditCsvRecordsAsync_Reads_New_Name_Before_Legacy_Name()
+    {
+        var service = new ExportAuditCsvService();
+        var settings = new ExportSettings
+        {
+            AuditCsvEnabled = true,
+            LocalSiteExportFolder = _tempDirectory
+        };
+        var site = new Site { TSC = "TRSE", Land = "Spanien" };
+
+        var legacyPath = await service.WriteSiteAuditCsvAsync(
+            site,
+            settings,
+            "MANUAL_EXCEL",
+            _tempDirectory,
+            [
+                new SalesRecord
+                {
+                    SourceSystem = "MANUAL_EXCEL",
+                    ExtractionDate = new DateTime(2026, 6, 10),
+                    Tsc = "TRSE",
+                    Land = "Spanien",
+                    InvoiceNumber = "NEW",
+                    SalesPriceValue = 20m
+                }
+            ]);
+        var oldPath = Path.Combine(_tempDirectory, "Sales_TRSE_2026-06-10.csv");
+        File.Move(legacyPath!, oldPath);
+        File.SetLastWriteTimeUtc(oldPath, new DateTime(2026, 6, 10, 8, 0, 0, DateTimeKind.Utc));
+
+        var newPath = await service.WriteSiteAuditCsvAsync(
+            site,
+            settings,
+            "MANUAL_EXCEL",
+            _tempDirectory,
+            [
+                new SalesRecord
+                {
+                    SourceSystem = "MANUAL_EXCEL",
+                    ExtractionDate = new DateTime(2026, 6, 11),
+                    Tsc = "TRSE",
+                    Land = "Spanien",
+                    InvoiceNumber = "PROCESSED",
+                    SalesPriceValue = 30m
+                }
+            ]);
+        File.SetLastWriteTimeUtc(newPath!, new DateTime(2026, 6, 11, 8, 0, 0, DateTimeKind.Utc));
+
+        var records = await service.ReadLatestSiteAuditCsvRecordsAsync(settings);
+
+        var record = Assert.Single(records);
+        Assert.Equal("PROCESSED", record.InvoiceNumber);
+        Assert.Equal(30m, record.SalesPriceValue);
+    }
+
     [Fact]
     public async Task CentralSalesDataProvider_Uses_AuditCsv_When_Configured()
     {

TrafagSalesExporter/TrafagSalesExporter.Tests/SiteExportServiceTests.cs

@@ -101,7 +101,7 @@ public sealed class SiteExportServiceTests : IDisposable
 
         Assert.NotNull(result.FilePath);
         Assert.True(File.Exists(result.FilePath));
-        var auditCsv = Directory.GetFiles(_tempDirectory, "Sales_TRSE_*.csv").Single();
+        var auditCsv = Directory.GetFiles(_tempDirectory, "Sales_ProcessedMergeInput_TRSE_*.csv").Single();
         Assert.True(File.Exists(auditCsv));
 
         Assert.Equal(2, sharePoint.Uploads.Count);