Stable checkout page

MidrandBookshop/Components/Pages/Checkout.razor

@@ -1,19 +1,18 @@
 @page "/checkout"
 @inject NavigationManager Navigation
+@rendermode InteractiveServer
+@attribute [Authorize]
 
 <div class="container py-5">
     <h2 class="fw-bold mb-4">Checkout</h2>
     <div class="row g-5">
-
-        <!-- LEFT COLUMN: SHIPPING & CART -->
         <div class="col-lg-8">
-            <!-- 1. Cart Items -->
             <div class="card border-0 shadow-sm p-4 mb-4">
                 <h5 class="fw-bold mb-3">Your Items</h5>
-                @foreach (var item in CartItems)
+                @foreach (var item in ShoppingCart.Items)
                 {
                     <div class="d-flex align-items-center justify-content-between pb-3 border-bottom mb-3">
-                        <div><h6 class="mb-0">@item.Title</h6><small class="text-muted">@item.Author</small></div>
+                        <div><h6 class="mb-0">@item.Product!.Name</h6><small class="text-muted">@($"{item.Author!.Name} {item.Author.LastName}")</small></div>
                         <div class="d-flex align-items-center gap-3">
                             <div class="d-flex border rounded-pill">
                                 <button class="btn btn-sm px-2" @onclick="() => ChangeQuantity(item, -1)">-</button>
@@ -26,7 +25,6 @@
                 }
             </div>
 
-            <!-- 2. Shipping Options -->
             <div class="card border-0 shadow-sm p-4 mb-4">
                 <h5 class="fw-bold mb-3">Shipping Method</h5>
                 <div class="form-check mb-2">
@@ -41,70 +39,28 @@
                 </div>
             </div>
 
-            <!-- 3. Address Fields -->
             <div class="card border-0 shadow-sm p-4">
                 <h5 class="fw-bold mb-3">Shipping Address</h5>
                 <div class="form-check mb-3">
                     <input class="form-check-input" type="checkbox" id="sameAsBilling" @bind="IsSameAddress">
                     <label class="form-check-label" for="sameAsBilling">Billing address same as shipping</label>
                 </div>
-                <!-- Add text inputs for address here, show/hide based on IsSameAddress -->
             </div>
         </div>
 
-        <!-- RIGHT COLUMN: STICKY SUMMARY -->
         <div class="col-lg-4">
             <div class="card border-0 shadow-sm p-4 sticky-top" style="top: 100px;">
                 <h5 class="fw-bold mb-3">Order Summary</h5>
-                <div class="d-flex justify-content-between mb-2"><span>Subtotal</span><span>R @Subtotal.ToString("F2")</span></div>
-                <div class="d-flex justify-content-between mb-2"><span>VAT (15%)</span><span>R @VatAmount.ToString("F2")</span></div>
-                <div class="d-flex justify-content-between mb-2"><span>Shipping</span><span>R @ShippingCost.ToString("F2")</span></div>
+                <div class="d-flex justify-content-between mb-2"><span>Subtotal</span><span>R @ShoppingCart.TotalAmount.ToString("F2")</span></div>
+                <div class="d-flex justify-content-between mb-2"><span>VAT (15%)</span><span>R @ShoppingCart.TotalVat.ToString("F2")</span></div>
+                <div class="d-flex justify-content-between mb-2"><span>Shipping</span><span>R @($"{ShippingCost:F2}")</span></div>
                 <hr />
                 <div class="d-flex justify-content-between mb-4">
                     <span class="fw-bold">Total Due</span>
-                    <h4 class="fw-bold">R @((Subtotal + VatAmount + ShippingCost).ToString("F2"))</h4>
+                    <h4 class="fw-bold">R @($"{ShoppingCart.TotalAmount + ShoppingCart.TotalVat + ShippingCost:F2}")</h4>
                 </div>
                 <button class="btn btn-dark w-100 py-3 rounded-pill" @onclick="CompletePurchase">Complete Purchase</button>
             </div>
         </div>
     </div>
-</div>
-
-@code {
-    private decimal ShippingCost = 0;
-    private bool IsSameAddress = true;
-
-    // Calculations
-    private decimal Subtotal => CartItems.Sum(i => (decimal)i.Price * i.Quantity);
-    private decimal VatAmount => Subtotal * 0.15m;
-
-    // Assuming your CartItems list is managed via a Service or cascading parameter
-    // Here it is locally mocked for this example
-    private List<CartItem> CartItems = new()
-    {
-        new CartItem { Id = 1, Title = "Letters from M/M (Paris)", Author = "M/M Paris", Price = 720, Quantity = 1 },
-        new CartItem { Id = 2, Title = "Daan Paans: Floating Signifiers", Author = "Daan Paans", Price = 540, Quantity = 1 }
-    };
-
-    private void ChangeQuantity(CartItem item, int delta)
-    {
-        item.Quantity += delta;
-        if (item.Quantity <= 0) CartItems.Remove(item);
-    }
-
-    private void RemoveFromCart(CartItem item) => CartItems.Remove(item);
-    private int GetCartTotal() => CartItems.Sum(i => i.Price * i.Quantity);
-
-    public class CartItem
-    {
-        public int Id { get; set; }
-        public string Title { get; set; } = "";
-        public string Author { get; set; } = "";
-        public int Price { get; set; }
-        public int Quantity { get; set; }
-    }
-    private void CompletePurchase(MouseEventArgs args)
-    {
-        Navigation.NavigateTo("/payment-confirmation");
-    }
-}
+</div>

MidrandBookshop/Components/Pages/Checkout.razor.cs

@@ -0,0 +1,54 @@
+using MidrandBookshop.Services.ShoppingCart;
+using MidrandBookshop.Services.ShoppingCart.Models;
+
+namespace MidrandBookshop.Components.Pages;
+
+public partial class Checkout(CartService cartService)
+{
+    [Inject]
+    private AuthenticationStateProvider AuthStateProvider { get; set; } = default!;
+
+    private Services.ShoppingCart.Models.Cart ShoppingCart => cartService.ShoppingCart;
+
+    private AuthenticationState? AuthState { get; set; }
+    private System.Security.Claims.ClaimsPrincipal? User { get; set; }
+    private bool IsAuthenticated => User?.Identity?.IsAuthenticated ?? false;
+
+    private decimal ShippingCost = 0;
+    private bool IsSameAddress = true;
+
+    private decimal OrderTotalAmount => ShoppingCart.TotalAmount + ShoppingCart.TotalVat + ShippingCost;
+
+    protected override async Task OnInitializedAsync()
+    {
+        AuthState = await AuthStateProvider.GetAuthenticationStateAsync();
+        User = AuthState!.User;
+
+        Navigation.LocationChanged += OnLocationChanged;
+        cartService.OnCartChanged += CartService_OnCartChanged;
+    }
+
+    private async void CartService_OnCartChanged() => await InvokeAsync(StateHasChanged);
+
+    private void OnLocationChanged(object? sender, LocationChangedEventArgs e) => StateHasChanged();
+
+    private async void ChangeQuantity(CartItem item, int delta)
+    {
+        var peekQuantity = item.Quantity + delta;
+
+        if (peekQuantity < 1) return;
+
+        cartService.UpdateQuantity(item.Price!.Id, delta);
+
+        await cartService.SaveCartToStorageAsync();
+    }
+
+    private async void RemoveFromCart(CartItem item)
+    {
+        cartService.RemoveOneItem(item.Price!.Id);
+
+        await cartService.SaveCartToStorageAsync();
+    }
+
+    private void CompletePurchase(MouseEventArgs args) => Navigation.NavigateTo("/payment-confirmation");
+}

MidrandBookshop/Components/Pages/PaymentConfirmation.razor

@@ -3,8 +3,6 @@
 <div class="container py-5">
     <div class="row justify-content-center">
         <div class="col-md-8 col-lg-6 text-center">
-
-            <!-- Success Icon & Message -->
             <div class="mb-4">
                 <div class="d-inline-block p-4 rounded-circle bg-success bg-opacity-10 text-success mb-3">
                     <svg width="48" height="48" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
@@ -20,12 +18,11 @@
                 </div>
             </div>
 
-            <!-- Calls to Action -->
             <div class="d-grid gap-3 mt-5">
                 <a href="/" class="btn btn-dark btn-lg rounded-pill py-3">Continue Shopping</a>
                 <div class="row g-3">
                     <div class="col-6">
-                        <a href="/order-history" class="btn btn-outline-dark w-100 rounded-pill py-3">Order History</a>
+                        <a href="/account" class="btn btn-outline-dark w-100 rounded-pill py-3">Order History</a>
                     </div>
                     <div class="col-6">
                         <a href="/track-order" class="btn btn-outline-dark w-100 rounded-pill py-3">Track Order</a>
@@ -33,7 +30,6 @@
                 </div>
             </div>
 
-            <!-- Optional Trust Footer -->
             <p class="mt-5 text-muted small">You will receive a confirmation email shortly at <strong>user@email.com</strong>.</p>
         </div>
     </div>