add auth, format

lib/features/cart/presentation/providers/cart_provider.dart

@@ -44,14 +44,9 @@ class Cart extends _$Cart {
       );
     } else {
       // Add new item
-      final newItem = CartItemData(
-        product: product,
-        quantity: quantity,
-      );
+      final newItem = CartItemData(product: product, quantity: quantity);
 
-      state = state.copyWith(
-        items: [...state.items, newItem],
-      );
+      state = state.copyWith(items: [...state.items, newItem]);
       _recalculateTotal();
     }
   }
@@ -59,7 +54,9 @@ class Cart extends _$Cart {
   /// Remove product from cart
   void removeFromCart(String productId) {
     state = state.copyWith(
-      items: state.items.where((item) => item.product.productId != productId).toList(),
+      items: state.items
+          .where((item) => item.product.productId != productId)
+          .toList(),
     );
     _recalculateTotal();
   }
@@ -113,20 +110,14 @@ class Cart extends _$Cart {
     // TODO: Validate with backend
     // For now, simulate discount application
     if (code.isNotEmpty) {
-      state = state.copyWith(
-        discountCode: code,
-        discountCodeApplied: true,
-      );
+      state = state.copyWith(discountCode: code, discountCodeApplied: true);
       _recalculateTotal();
     }
   }
 
   /// Remove discount code
   void removeDiscountCode() {
-    state = state.copyWith(
-      discountCode: null,
-      discountCodeApplied: false,
-    );
+    state = state.copyWith(discountCode: null, discountCodeApplied: false);
     _recalculateTotal();
   }
 
@@ -157,10 +148,7 @@ class Cart extends _$Cart {
 
   /// Get total quantity of all items
   double get totalQuantity {
-    return state.items.fold<double>(
-      0.0,
-      (sum, item) => sum + item.quantity,
-    );
+    return state.items.fold<double>(0.0, (sum, item) => sum + item.quantity);
   }
 }
 

lib/features/cart/presentation/providers/cart_state.dart

@@ -12,18 +12,12 @@ class CartItemData {
   final Product product;
   final double quantity;
 
-  const CartItemData({
-    required this.product,
-    required this.quantity,
-  });
+  const CartItemData({required this.product, required this.quantity});
 
   /// Calculate line total
   double get lineTotal => product.basePrice * quantity;
 
-  CartItemData copyWith({
-    Product? product,
-    double? quantity,
-  }) {
+  CartItemData copyWith({Product? product, double? quantity}) {
     return CartItemData(
       product: product ?? this.product,
       quantity: quantity ?? this.quantity,
@@ -101,7 +95,8 @@ class CartState {
       discountCode: discountCode ?? this.discountCode,
       discountCodeApplied: discountCodeApplied ?? this.discountCodeApplied,
       memberTier: memberTier ?? this.memberTier,
-      memberDiscountPercent: memberDiscountPercent ?? this.memberDiscountPercent,
+      memberDiscountPercent:
+          memberDiscountPercent ?? this.memberDiscountPercent,
       subtotal: subtotal ?? this.subtotal,
       memberDiscount: memberDiscount ?? this.memberDiscount,
       shippingFee: shippingFee ?? this.shippingFee,