Add invoice repository

Distribution/Features/Invoice/InvoiceRepository.cs

@@ -0,0 +1,19 @@
+using Distribution.Data;
+using Microsoft.EntityFrameworkCore;
+
+namespace Distribution.Features.Invoice;
+
+public class InvoiceRepository(AppDBContext context) : IInvoiceRepository
+{
+    public async Task<Models.Invoice?> GetByIdAsync(Guid id) =>
+        await context.Invoices.FindAsync(id);
+
+    public async Task<Models.Invoice?> GetByOrderIdAsync(Guid orderId) =>
+        await context.Invoices.FirstOrDefaultAsync(i => i.FK_OrderId == orderId && i.IsActive);
+
+    public async Task AddAsync(Models.Invoice entity) =>
+        await context.Invoices.AddAsync(entity);
+
+    public void Update(Models.Invoice entity) =>
+        context.Invoices.Update(entity);
+}