Section 12 - View Component Code

BulkyBookWeb/ViewComponents/ShoppingCartViewComponent.cs

@@ -0,0 +1,43 @@
+using BulkyBook.DataAccess.Repository.IRepository;
+using BulkyBook.Utility;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using System.Linq;
+using System.Security.Claims;
+using System.Threading.Tasks;
+
+namespace BulkyBookWeb.ViewComponents
+{
+    public class ShoppingCartViewComponent : ViewComponent
+    {
+        private readonly IUnitOfWork _unitOfWork;
+        public ShoppingCartViewComponent(IUnitOfWork unitOfWork)
+        {
+            _unitOfWork= unitOfWork;
+        }
+
+        public async Task<IViewComponentResult> InvokeAsync()
+        {
+            var claimsIdentity = (ClaimsIdentity)User.Identity;
+            var claim = claimsIdentity.FindFirst(ClaimTypes.NameIdentifier);
+            if (claim != null)
+            {
+                if (HttpContext.Session.GetInt32(SD.SessionCart) != null)
+                {
+                    return View(HttpContext.Session.GetInt32(SD.SessionCart));
+                }
+                else
+                {
+                    HttpContext.Session.SetInt32(SD.SessionCart,
+                        _unitOfWork.ShoppingCart.GetAll(u => u.ApplicationUserId == claim.Value).ToList().Count);
+                    return View(HttpContext.Session.GetInt32(SD.SessionCart));
+                }
+            }
+            else
+            {
+                HttpContext.Session.Clear();
+                return View(0);
+            }
+        }
+    }
+}