ShopSolution-backend/Webshop.Infrastructure/Repositories/SupplierRepository.cs

// src/Webshop.Infrastructure/Repositories/SupplierRepository.cs
// Auto-generiert von CreateWebshopFiles.ps1 (aktualisiert um Implementierungen)
using Microsoft.EntityFrameworkCore; // Wichtig für ToListAsync, FindAsync etc.
using Webshop.Domain.Entities;
using Webshop.Domain.Interfaces;
using Webshop.Infrastructure.Data;
using System; // Für Guid
using System.Collections.Generic;
using System.Threading.Tasks;

namespace Webshop.Infrastructure.Repositories
{
    public class SupplierRepository : ISupplierRepository // Hier muss das Interface stehen
    {
        private readonly ApplicationDbContext _context;

        public SupplierRepository(ApplicationDbContext context)
        {
            _context = context;
        }

        // --- IMPLEMENTIERUNG DER ISupplierRepository METHODEN ---

        public async Task<IEnumerable<Supplier>> GetAllSuppliersAsync()
        {
            return await _context.Suppliers.ToListAsync();
        }

        public async Task<Supplier?> GetSupplierByIdAsync(Guid id)
        {
            return await _context.Suppliers.FindAsync(id);
        }

        public async Task AddSupplierAsync(Supplier supplier)
        {
            _context.Suppliers.Add(supplier);
            await _context.SaveChangesAsync(); // Änderungen in der DB speichern
        }

        public async Task UpdateSupplierAsync(Supplier supplier)
        {
            _context.Suppliers.Update(supplier);
            await _context.SaveChangesAsync();
        }

        public async Task DeleteSupplierAsync(Guid id)
        {
            var supplier = await _context.Suppliers.FindAsync(id); // Lieferant zuerst finden
            if (supplier != null)
            {
                _context.Suppliers.Remove(supplier); // Lieferant entfernen
                await _context.SaveChangesAsync(); // Änderungen speichern
            }
        }
    }
}