"Remove from Cart" functionality added; need to go back to debug why the Cart is no longer coming up.

ShopOnline.Api/Controllers/ShoppingCartController.cs

@@ -100,5 +100,33 @@ namespace ShopOnline.Api.Controllers
 
             }
         }
+
+        [HttpDelete("{id:int}")]
+        public async Task<ActionResult<CartItemDto>> DeleteItem(int id)
+        {
+            try
+            {
+                var cartItem = await this.shoppingCartRepository.DeleteItem(id);
+                if(cartItem == null)
+                {
+                    return NotFound();
+                }
+
+                var product = await this.productRepository.GetItem(cartItem.ProductId);
+                if(product == null)
+                {
+                    return NotFound();
+                }
+
+                var cartItemDto = cartItem.ConvertToDto(product);
+
+                return Ok(cartItemDto);
+            }
+            catch (Exception ex)
+            {
+                return StatusCode(StatusCodes.Status500InternalServerError, ex.Message);
+
+            }
+        }
     }
 }

ShopOnline.Api/Repositories/ShoppingCartRepository.cs

@@ -45,9 +45,16 @@ namespace ShopOnline.Api.Repositories
         }
 
 
-        public Task<CartItem> DeleteItem(int id)
+        public async Task<CartItem> DeleteItem(int id)
         {
-            throw new NotImplementedException();
+            var item = await this.shopOnlineDbContext.CartItems.FindAsync(id);
+
+            if(item != null)
+            {
+                this.shopOnlineDbContext.CartItems.Remove(item);
+                await this.shopOnlineDbContext.SaveChangesAsync();
+            }
+            return item;
         }
 
         public async Task<CartItem> GetItem(int id)

ShopOnline.Web/Pages/ProductsBase.cs

@@ -1,5 +1,6 @@
 using Microsoft.AspNetCore.Components;
 using ShopOnline.Models.Dtos;
+using ShopOnline.Web.Services;
 using ShopOnline.Web.Services.Contracts;
 
 namespace ShopOnline.Web.Pages
@@ -28,5 +29,6 @@ namespace ShopOnline.Web.Pages
         {
             return groupedProductDtos.FirstOrDefault(pg => pg.CategoryId == groupedProductDtos.Key).CategoryName;
         }
+
     }
 }

ShopOnline.Web/Pages/ShoppingCart.razor

@@ -20,6 +20,10 @@ else {
                         <h5>@item.ProductName</h5>
                         <div class="mb-4">@item.ProductDescription</div>
                         <span>Price: <b>@item.Price.ToString("C")</b></span>
+                        <div>
+                            <button @onclick = "(() => DeleteCartItem_Click(item.Id))"
+                                class="btn btn-danger sm">Remove</button>
+                        </div>
                     </div>
                 </div>
             }

ShopOnline.Web/Pages/ShoppingCartBase.cs

@@ -9,7 +9,7 @@ namespace ShopOnline.Web.Pages
         [Inject]
         public IShoppingCartService ShoppingCartService { get; set; }
 
-        public IEnumerable<CartItemDto> ShoppingCartItems { get; set; }
+        public List<CartItemDto> ShoppingCartItems { get; set; }
 
         public string ErrorMessage { get; set; }
 
@@ -25,5 +25,24 @@ namespace ShopOnline.Web.Pages
             }
         }
 
+        protected async Task DeleteCartItem_Click(int id)
+        {
+            var cartItemDto = await ShoppingCartService.DeleteItem(id);
+
+            RemoveCartItem(id);
+
+        }
+
+        private CartItemDto GetCartItem(int id)
+        {
+            return ShoppingCartItems.FirstOrDefault(i => i.Id == id);
+        }
+
+        private void RemoveCartItem(int id)
+        {
+            var CartItemDto = GetCartItem(id);
+
+            ShoppingCartItems.Remove(CartItemDto);
+        }
     }
 }

ShopOnline.Web/Services/Contracts/IShoppingCartService.cs

@@ -4,7 +4,8 @@ namespace ShopOnline.Web.Services.Contracts
 {
     public interface IShoppingCartService
     {
-        Task<IEnumerable<CartItemDto>> GetItems(int userId);
+        Task<List<CartItemDto>> GetItems(int userId);
         Task<CartItemDto> AddItem(CartItemToAddDto cartItemToAddDto);
+        Task<CartItemDto> DeleteItem(int id);
     }
 }

ShopOnline.Web/Services/ShoppingCartService.cs

@@ -38,7 +38,25 @@ namespace ShopOnline.Web.Services
             }
         }
 
-        public async Task<IEnumerable<CartItemDto>> GetItems(int userId)
+        public async Task<CartItemDto> DeleteItem(int id)
+        {
+            try
+            {
+                var response = await httpClient.DeleteAsync($"api/ShoppingCart/{id}");
+                if (response.IsSuccessStatusCode)
+                {
+                    return await response.Content.ReadFromJsonAsync<CartItemDto>();
+                }
+                return default(CartItemDto);
+            }
+            catch (Exception)
+            {
+
+                throw;
+            }
+        }
+
+        public async Task<List<CartItemDto>> GetItems(int userId)
         {
             try
             {
@@ -47,9 +65,9 @@ namespace ShopOnline.Web.Services
                 {
                     if(response.StatusCode == System.Net.HttpStatusCode.NoContent)
                     {
-                        return Enumerable.Empty<CartItemDto>();
+                        return Enumerable.Empty<CartItemDto>().ToList();
                     }
-                    return await response.Content.ReadFromJsonAsync<IEnumerable<CartItemDto>>();
+                    return await response.Content.ReadFromJsonAsync<List<CartItemDto>>();
                 }
                 else
                 {
@@ -63,5 +81,10 @@ namespace ShopOnline.Web.Services
                 throw;
             }
         }
+
+        Task<List<CartItemDto>> IShoppingCartService.GetItems(int userId)
+        {
+            throw new NotImplementedException();
+        }
     }
 }