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Add support for invoice attachments

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Introduced the `InvoiceAttachment` entity and its relationship with `ZugferdInvoice` to manage extracted invoice attachments. Updated `AppDbContext` and added a migration to create the `InvoiceAttachments` table with cascading delete behavior and an index for optimized queries.

Enhanced the UI to display attachments in `Details.cshtml`, including file type icons, file size, and extraction date. Added a new `ViewAttachment` page to render or download attachments based on their type, with support for XML, plain text, images, and downloads.

Implemented `AttachmentViewerService` to determine viewer types and MIME types for attachments. Registered the service in the DI container. Updated `Upload.cshtml.cs` to save extracted attachments to the database.

Improved user experience with syntax highlighting for XML files and appropriate messages for unsupported file types.
This commit is contained in:
OlgunR
2026-06-02 15:03:37 +02:00
parent 43d63e975d
commit 920dce13d5
13 changed files with 536 additions and 2 deletions
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14
DXApp.TemplateKitProject/Data/AppDbContext.cs
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@@ -6,6 +6,7 @@ namespace DXApp.TemplateKitProject.Data;
public class AppDbContext(DbContextOptions<AppDbContext> options) : DbContext(options)
{
public DbSet<ZugferdInvoice> ZugferdInvoices { get; set; }
public DbSet<InvoiceAttachment> InvoiceAttachments { get; set; }
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
@@ -27,6 +28,19 @@ public class AppDbContext(DbContextOptions<AppDbContext> options) : DbContext(op
entity.Property(e => e.TaxAmount)
.HasColumnType("decimal(18,2)");
// Relationship: One-to-Many mit InvoiceAttachments
entity.HasMany(e => e.Attachments)
.WithOne(a => a.ZugferdInvoice)
.HasForeignKey(a => a.ZugferdInvoiceId)
.OnDelete(DeleteBehavior.Cascade);
});
modelBuilder.Entity<InvoiceAttachment>(entity =>
{
// Index für schnelleres Laden der Attachments einer Rechnung
entity.HasIndex(e => e.ZugferdInvoiceId)
.HasDatabaseName("IX_InvoiceAttachments_ZugferdInvoiceId");
});
}
}