Files
DXApp/DXApp.TemplateKitProject/Pages/Invoices/Upload.cshtml.cs
OlgunR 245f7a8268 Add duplicate invoice detection and warning message
Added a warning message in `Upload.cshtml` to notify users when a duplicate invoice is detected. Introduced the `IsDuplicate` property in `UploadModel` to track duplicates and updated the `OnPostAsync` method to set this property based on the `ImportedAt` timestamp.

Enhanced the `ImportAsync` method in `ZugferdImportService` to include duplicate detection by checking the database for invoices with the same `InvoiceNumber` and `SellerTaxId`. If a duplicate is found, it logs a warning and returns the existing invoice.

Updated `ImportAsync` to accept an optional `guidelineId` parameter and added logging for duplicate detection and successful imports.
2026-05-28 08:35:01 +02:00

89 lines
3.2 KiB
C#

using DXApp.TemplateKitProject.Data;
using DXApp.TemplateKitProject.Models;
using DXApp.TemplateKitProject.Services;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
namespace DXApp.TemplateKitProject.Pages.Invoices;
public class UploadModel(
PdfAttachmentExtractorService extractor,
ZugferdImportService zugferdImportService,
PdfResultPackageService resultPackageService,
AppDbContext db,
ILogger<UploadModel> logger) : PageModel
{
[BindProperty]
public IFormFile? PdfFile { get; set; }
public PdfExtractionResult? Result { get; private set; }
public bool ExtractionDone { get; private set; }
public string? ErrorMessage { get; private set; }
public ZugferdInvoice? ImportedInvoice { get; private set; }
public string? ResultFilePath { get; private set; }
public bool IsDuplicate { get; private set; }
public void OnGet()
{ }
public async Task<IActionResult> OnPostAsync()
{
if (PdfFile is null || PdfFile.Length == 0)
{
ModelState.AddModelError(nameof(PdfFile), "Bitte eine PDF-Datei auswählen.");
return Page();
}
if (!PdfFile.FileName.EndsWith(".pdf", StringComparison.OrdinalIgnoreCase))
{
ModelState.AddModelError(nameof(PdfFile), "Nur PDF-Dateien sind erlaubt.");
return Page();
}
ExtractionDone = true;
try
{
// Stream in MemoryStream puffern → kann zweimal gelesen werden
using var memStream = new MemoryStream();
await PdfFile.CopyToAsync(memStream);
var originalBytes = memStream.ToArray(); // ← neu: als byte[] merken
// 1. Anhänge extrahieren
memStream.Position = 0;
Result = extractor.ExtractAttachments(memStream, PdfFile.FileName);
// 2. Wenn ZUGFeRD-XML gefunden → parsen und in DB speichern
if (Result.HasZugferdXml)
{
memStream.Position = 0;
ImportedInvoice = await zugferdImportService.ImportAsync(memStream, "Upload", Result.ZugferdGuidelineId);
// Duplikat erkennen: vorhandener Eintrag hat ImportedAt von früher
if (ImportedInvoice is not null && ImportedInvoice.ImportedAt < DateTime.UtcNow.AddSeconds(-5))
IsDuplicate = true;
// 3. Result-Package erstellen (nur wenn Import erfolgreich UND kein Duplikat)
if (ImportedInvoice is not null && !IsDuplicate)
{
ResultFilePath = await resultPackageService.CreateResultPackageAsync(
originalBytes, PdfFile.FileName, ImportedInvoice);
// ResultFilePath in DB aktualisieren
if (ResultFilePath is not null)
{
ImportedInvoice.ResultFilePath = ResultFilePath;
await db.SaveChangesAsync();
}
}
}
}
catch (Exception ex)
{
logger.LogError(ex, "Fehler beim Verarbeiten der Datei '{FileName}'.", PdfFile.FileName);
ErrorMessage = $"Fehler beim Verarbeiten der Datei: {ex.Message}";
}
return Page();
}
}