update database

lib/features/orders/domain/entities/order.dart

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+/// Domain Entity: Order
+///
+/// Represents a customer order.
+library;
+
+/// Order status enum
+enum OrderStatus {
+  /// Order has been created but not confirmed
+  draft,
+
+  /// Order has been confirmed
+  confirmed,
+
+  /// Order is being processed
+  processing,
+
+  /// Order is ready for shipping
+  ready,
+
+  /// Order has been shipped
+  shipped,
+
+  /// Order has been delivered
+  delivered,
+
+  /// Order has been completed
+  completed,
+
+  /// Order has been cancelled
+  cancelled,
+
+  /// Order has been returned
+  returned;
+
+  /// Get display name for status
+  String get displayName {
+    switch (this) {
+      case OrderStatus.draft:
+        return 'Draft';
+      case OrderStatus.confirmed:
+        return 'Confirmed';
+      case OrderStatus.processing:
+        return 'Processing';
+      case OrderStatus.ready:
+        return 'Ready';
+      case OrderStatus.shipped:
+        return 'Shipped';
+      case OrderStatus.delivered:
+        return 'Delivered';
+      case OrderStatus.completed:
+        return 'Completed';
+      case OrderStatus.cancelled:
+        return 'Cancelled';
+      case OrderStatus.returned:
+        return 'Returned';
+    }
+  }
+}
+
+/// Address information
+class Address {
+  /// Recipient name
+  final String? name;
+
+  /// Phone number
+  final String? phone;
+
+  /// Street address
+  final String? street;
+
+  /// Ward/commune
+  final String? ward;
+
+  /// District
+  final String? district;
+
+  /// City/province
+  final String? city;
+
+  /// Postal code
+  final String? postalCode;
+
+  const Address({
+    this.name,
+    this.phone,
+    this.street,
+    this.ward,
+    this.district,
+    this.city,
+    this.postalCode,
+  });
+
+  /// Get full address string
+  String get fullAddress {
+    final parts = [
+      street,
+      ward,
+      district,
+      city,
+      postalCode,
+    ].where((part) => part != null && part.isNotEmpty).toList();
+
+    return parts.join(', ');
+  }
+
+  /// Create from JSON map
+  factory Address.fromJson(Map<String, dynamic> json) {
+    return Address(
+      name: json['name'] as String?,
+      phone: json['phone'] as String?,
+      street: json['street'] as String?,
+      ward: json['ward'] as String?,
+      district: json['district'] as String?,
+      city: json['city'] as String?,
+      postalCode: json['postal_code'] as String?,
+    );
+  }
+
+  /// Convert to JSON map
+  Map<String, dynamic> toJson() {
+    return {
+      'name': name,
+      'phone': phone,
+      'street': street,
+      'ward': ward,
+      'district': district,
+      'city': city,
+      'postal_code': postalCode,
+    };
+  }
+}
+
+/// Order Entity
+///
+/// Contains complete order information:
+/// - Order identification
+/// - Customer details
+/// - Pricing and discounts
+/// - Shipping information
+/// - Status tracking
+class Order {
+  /// Unique order identifier
+  final String orderId;
+
+  /// Human-readable order number
+  final String orderNumber;
+
+  /// User ID who placed the order
+  final String userId;
+
+  /// Current order status
+  final OrderStatus status;
+
+  /// Total order amount before discounts
+  final double totalAmount;
+
+  /// Discount amount applied
+  final double discountAmount;
+
+  /// Tax amount
+  final double taxAmount;
+
+  /// Shipping fee
+  final double shippingFee;
+
+  /// Final amount to pay
+  final double finalAmount;
+
+  /// Shipping address
+  final Address? shippingAddress;
+
+  /// Billing address
+  final Address? billingAddress;
+
+  /// Expected delivery date
+  final DateTime? expectedDeliveryDate;
+
+  /// Actual delivery date
+  final DateTime? actualDeliveryDate;
+
+  /// Order notes
+  final String? notes;
+
+  /// Cancellation reason
+  final String? cancellationReason;
+
+  /// ERPNext sales order reference
+  final String? erpnextSalesOrder;
+
+  /// Order creation timestamp
+  final DateTime createdAt;
+
+  /// Last update timestamp
+  final DateTime updatedAt;
+
+  const Order({
+    required this.orderId,
+    required this.orderNumber,
+    required this.userId,
+    required this.status,
+    required this.totalAmount,
+    required this.discountAmount,
+    required this.taxAmount,
+    required this.shippingFee,
+    required this.finalAmount,
+    this.shippingAddress,
+    this.billingAddress,
+    this.expectedDeliveryDate,
+    this.actualDeliveryDate,
+    this.notes,
+    this.cancellationReason,
+    this.erpnextSalesOrder,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  /// Check if order is active (not cancelled or completed)
+  bool get isActive =>
+      status != OrderStatus.cancelled &&
+      status != OrderStatus.completed &&
+      status != OrderStatus.returned;
+
+  /// Check if order can be cancelled
+  bool get canBeCancelled =>
+      status == OrderStatus.draft ||
+      status == OrderStatus.confirmed ||
+      status == OrderStatus.processing;
+
+  /// Check if order is delivered
+  bool get isDelivered =>
+      status == OrderStatus.delivered || status == OrderStatus.completed;
+
+  /// Check if order is cancelled
+  bool get isCancelled => status == OrderStatus.cancelled;
+
+  /// Get discount percentage
+  double get discountPercentage {
+    if (totalAmount == 0) return 0;
+    return (discountAmount / totalAmount) * 100;
+  }
+
+  /// Copy with method for immutability
+  Order copyWith({
+    String? orderId,
+    String? orderNumber,
+    String? userId,
+    OrderStatus? status,
+    double? totalAmount,
+    double? discountAmount,
+    double? taxAmount,
+    double? shippingFee,
+    double? finalAmount,
+    Address? shippingAddress,
+    Address? billingAddress,
+    DateTime? expectedDeliveryDate,
+    DateTime? actualDeliveryDate,
+    String? notes,
+    String? cancellationReason,
+    String? erpnextSalesOrder,
+    DateTime? createdAt,
+    DateTime? updatedAt,
+  }) {
+    return Order(
+      orderId: orderId ?? this.orderId,
+      orderNumber: orderNumber ?? this.orderNumber,
+      userId: userId ?? this.userId,
+      status: status ?? this.status,
+      totalAmount: totalAmount ?? this.totalAmount,
+      discountAmount: discountAmount ?? this.discountAmount,
+      taxAmount: taxAmount ?? this.taxAmount,
+      shippingFee: shippingFee ?? this.shippingFee,
+      finalAmount: finalAmount ?? this.finalAmount,
+      shippingAddress: shippingAddress ?? this.shippingAddress,
+      billingAddress: billingAddress ?? this.billingAddress,
+      expectedDeliveryDate: expectedDeliveryDate ?? this.expectedDeliveryDate,
+      actualDeliveryDate: actualDeliveryDate ?? this.actualDeliveryDate,
+      notes: notes ?? this.notes,
+      cancellationReason: cancellationReason ?? this.cancellationReason,
+      erpnextSalesOrder: erpnextSalesOrder ?? this.erpnextSalesOrder,
+      createdAt: createdAt ?? this.createdAt,
+      updatedAt: updatedAt ?? this.updatedAt,
+    );
+  }
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+
+    return other is Order &&
+        other.orderId == orderId &&
+        other.orderNumber == orderNumber &&
+        other.userId == userId &&
+        other.status == status &&
+        other.totalAmount == totalAmount &&
+        other.discountAmount == discountAmount &&
+        other.taxAmount == taxAmount &&
+        other.shippingFee == shippingFee &&
+        other.finalAmount == finalAmount;
+  }
+
+  @override
+  int get hashCode {
+    return Object.hash(
+      orderId,
+      orderNumber,
+      userId,
+      status,
+      totalAmount,
+      discountAmount,
+      taxAmount,
+      shippingFee,
+      finalAmount,
+    );
+  }
+
+  @override
+  String toString() {
+    return 'Order(orderId: $orderId, orderNumber: $orderNumber, status: $status, '
+        'finalAmount: $finalAmount, createdAt: $createdAt)';
+  }
+}