Webshop.Api/Controllers/Customers/CartController.cs

@@ -5,8 +5,8 @@ using System;
 using System.Security.Claims;
 using System.Threading.Tasks;
 using Webshop.Application;
-using Webshop.Application.DTOs.Customers;
-using Webshop.Application.DTOs.Shipping;
+using Webshop.Application.DTOs.Customers; // Für CartDto
+using Webshop.Application.DTOs.Shipping;  // Für CartItemDto
 using Webshop.Application.Services.Customers.Interfaces;
 
 namespace Webshop.Api.Controllers.Customer
@@ -14,7 +14,7 @@ namespace Webshop.Api.Controllers.Customer
     [ApiController]
     [Route("api/v1/customer/[controller]")]
     [Authorize(Roles = "Customer")]
-    public class CartController : ControllerBase
+    public class CartController : ControllerBase // <--- WICHTIG: Muss public sein und erben
     {
         private readonly ICartService _cartService;
 
@@ -24,6 +24,7 @@ namespace Webshop.Api.Controllers.Customer
         }
 
         [HttpGet]
+        [ProducesResponseType(typeof(CartDto), StatusCodes.Status200OK)]
         public async Task<IActionResult> GetCart()
         {
             var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
@@ -32,14 +33,17 @@ namespace Webshop.Api.Controllers.Customer
         }
 
         [HttpPost("items")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(typeof(string), StatusCodes.Status400BadRequest)]
         public async Task<IActionResult> AddToCart([FromBody] CartItemDto item)
         {
             var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
             var result = await _cartService.AddToCartAsync(userId!, item);
-            return result.Type == ServiceResultType.Success ? Ok() : BadRequest(result.ErrorMessage);
+            return result.Type == ServiceResultType.Success ? Ok() : BadRequest(new { Message = result.ErrorMessage });
         }
 
         [HttpDelete("items/{productId}")]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
         public async Task<IActionResult> RemoveItem(Guid productId)
         {
             var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);

Webshop.Application/DTOs/Customers/CartDto.cs

@@ -1,6 +1,6 @@
 using System;
 using System.Collections.Generic;
-using Webshop.Application.DTOs.Shipping; // Oder wo CartItemDto liegt
+using Webshop.Application.DTOs.Shipping; // Wichtig für CartItemDto
 
 namespace Webshop.Application.DTOs.Customers
 {
@@ -9,6 +9,8 @@ namespace Webshop.Application.DTOs.Customers
         public Guid Id { get; set; }
         public string UserId { get; set; } = string.Empty;
         public List<CartItemDto> Items { get; set; } = new List<CartItemDto>();
-        public decimal TotalEstimatedPrice { get; set; } // Optional: Summe berechnet
+
+        // Optional: Gesamtsumme zur Anzeige im Frontend
+        public decimal TotalPrice { get; set; }
     }
 }

Webshop.Application/Services/Customers/CartService.cs

@@ -3,8 +3,8 @@ using System;
 using System.Linq;
 using System.Threading.Tasks;
 using Webshop.Application;
-using Webshop.Application.DTOs.Customers;
-using Webshop.Application.DTOs.Shipping;
+using Webshop.Application.DTOs.Customers; // <--- DIESE ZEILE HAT GEFEHLT (für CartDto)
+using Webshop.Application.DTOs.Shipping;  // (für CartItemDto)
 using Webshop.Application.Services.Customers.Interfaces;
 using Webshop.Domain.Entities;
 using Webshop.Infrastructure.Data;
@@ -20,10 +20,16 @@ namespace Webshop.Application.Services.Customers
             _context = context;
         }
 
+        // Die Implementierung muss exakt so aussehen:
         public async Task<ServiceResult<CartDto>> GetCartAsync(string userId)
         {
             var cart = await GetCartEntity(userId);
-            if (cart == null) return ServiceResult.Ok(new CartDto()); // Leerer Warenkorb
+
+            // Wenn kein Warenkorb da ist, geben wir einen leeren zurück (Success)
+            if (cart == null)
+            {
+                return ServiceResult.Ok(new CartDto { UserId = userId });
+            }
 
             var dto = new CartDto
             {
@@ -36,6 +42,7 @@ namespace Webshop.Application.Services.Customers
                     Quantity = i.Quantity
                 }).ToList()
             };
+
             return ServiceResult.Ok(dto);
         }
 
@@ -63,7 +70,8 @@ namespace Webshop.Application.Services.Customers
                     ProductVariantId = itemDto.ProductVariantId,
                     Quantity = itemDto.Quantity
                 };
-                cart.Items.Add(newItem); // Wichtig: Muss in CartItems DbSet landen
+                // WICHTIG: Zur Collection hinzufügen UND dem Context Bescheid geben
+                cart.Items.Add(newItem);
                 _context.CartItems.Add(newItem);
             }
 

Webshop.Application/Services/Customers/Interfaces/ICartService.cs

@@ -1,6 +1,8 @@
 using System.Threading.Tasks;
-using Webshop.Application.DTOs.Shipping; // Für CartItemDto
-using Webshop.Application; // Für ServiceResult
+using System; // Für Guid
+using Webshop.Application.DTOs.Customers; // <--- WICHTIG für CartDto
+using Webshop.Application.DTOs.Shipping;
+using Webshop.Application;
 
 namespace Webshop.Application.Services.Customers.Interfaces
 {