107 lines
2.8 KiB
Dart
107 lines
2.8 KiB
Dart
/// Cart State
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///
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/// Immutable state class for cart management.
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library;
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import 'package:worker/features/products/domain/entities/product.dart';
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/// Cart Item Data
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///
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/// Represents a product in the cart with quantity.
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class CartItemData {
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final Product product;
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final double quantity;
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const CartItemData({required this.product, required this.quantity});
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/// Calculate line total
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double get lineTotal => product.basePrice * quantity;
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CartItemData copyWith({Product? product, double? quantity}) {
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return CartItemData(
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product: product ?? this.product,
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quantity: quantity ?? this.quantity,
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);
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}
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}
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/// Cart State
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///
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/// Represents the complete state of the shopping cart.
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class CartState {
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final List<CartItemData> items;
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final String selectedWarehouse;
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final String? discountCode;
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final bool discountCodeApplied;
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final String memberTier;
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final double memberDiscountPercent;
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final double subtotal;
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final double memberDiscount;
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final double shippingFee;
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final double total;
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const CartState({
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required this.items,
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required this.selectedWarehouse,
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this.discountCode,
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required this.discountCodeApplied,
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required this.memberTier,
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required this.memberDiscountPercent,
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required this.subtotal,
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required this.memberDiscount,
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required this.shippingFee,
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required this.total,
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});
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factory CartState.initial() {
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return const CartState(
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items: [],
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selectedWarehouse: 'Kho Hà Nội - Nguyễn Trãi',
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discountCode: null,
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discountCodeApplied: false,
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memberTier: '',
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memberDiscountPercent: 0.0,
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subtotal: 0.0,
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memberDiscount: 0.0,
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shippingFee: 0.0,
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total: 0.0,
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);
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}
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bool get isEmpty => items.isEmpty;
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bool get isNotEmpty => items.isNotEmpty;
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int get itemCount => items.length;
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/// Get total quantity across all items
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double get totalQuantity {
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return items.fold<double>(0.0, (sum, item) => sum + item.quantity);
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}
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CartState copyWith({
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List<CartItemData>? items,
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String? selectedWarehouse,
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String? discountCode,
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bool? discountCodeApplied,
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String? memberTier,
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double? memberDiscountPercent,
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double? subtotal,
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double? memberDiscount,
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double? shippingFee,
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double? total,
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}) {
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return CartState(
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items: items ?? this.items,
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selectedWarehouse: selectedWarehouse ?? this.selectedWarehouse,
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discountCode: discountCode ?? this.discountCode,
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discountCodeApplied: discountCodeApplied ?? this.discountCodeApplied,
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memberTier: memberTier ?? this.memberTier,
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memberDiscountPercent:
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memberDiscountPercent ?? this.memberDiscountPercent,
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subtotal: subtotal ?? this.subtotal,
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memberDiscount: memberDiscount ?? this.memberDiscount,
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shippingFee: shippingFee ?? this.shippingFee,
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total: total ?? this.total,
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);
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}
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}
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