update database

lib/features/quotes/domain/entities/quote.dart

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+/// Domain Entity: Quote
+///
+/// Represents a price quotation for products/services.
+library;
+
+/// Quote status enum
+enum QuoteStatus {
+  /// Quote is in draft state
+  draft,
+
+  /// Quote has been sent to customer
+  sent,
+
+  /// Customer has accepted the quote
+  accepted,
+
+  /// Quote has been rejected
+  rejected,
+
+  /// Quote has expired
+  expired,
+
+  /// Quote has been converted to order
+  converted;
+
+  /// Get display name for status
+  String get displayName {
+    switch (this) {
+      case QuoteStatus.draft:
+        return 'Draft';
+      case QuoteStatus.sent:
+        return 'Sent';
+      case QuoteStatus.accepted:
+        return 'Accepted';
+      case QuoteStatus.rejected:
+        return 'Rejected';
+      case QuoteStatus.expired:
+        return 'Expired';
+      case QuoteStatus.converted:
+        return 'Converted';
+    }
+  }
+}
+
+/// Delivery Address information
+class DeliveryAddress {
+  /// 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 DeliveryAddress({
+    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 DeliveryAddress.fromJson(Map<String, dynamic> json) {
+    return DeliveryAddress(
+      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,
+    };
+  }
+}
+
+/// Quote Entity
+///
+/// Contains complete quotation information:
+/// - Quote identification
+/// - Customer details
+/// - Pricing and terms
+/// - Conversion tracking
+class Quote {
+  /// Unique quote identifier
+  final String quoteId;
+
+  /// Quote number (human-readable)
+  final String quoteNumber;
+
+  /// User ID who requested the quote
+  final String userId;
+
+  /// Quote status
+  final QuoteStatus status;
+
+  /// Total amount before discount
+  final double totalAmount;
+
+  /// Discount amount
+  final double discountAmount;
+
+  /// Final amount after discount
+  final double finalAmount;
+
+  /// Project name (if applicable)
+  final String? projectName;
+
+  /// Delivery address
+  final DeliveryAddress? deliveryAddress;
+
+  /// Payment terms
+  final String? paymentTerms;
+
+  /// Quote notes
+  final String? notes;
+
+  /// Valid until date
+  final DateTime? validUntil;
+
+  /// Converted order ID (if converted)
+  final String? convertedOrderId;
+
+  /// ERPNext quotation reference
+  final String? erpnextQuotation;
+
+  /// Quote creation timestamp
+  final DateTime createdAt;
+
+  /// Last update timestamp
+  final DateTime updatedAt;
+
+  const Quote({
+    required this.quoteId,
+    required this.quoteNumber,
+    required this.userId,
+    required this.status,
+    required this.totalAmount,
+    required this.discountAmount,
+    required this.finalAmount,
+    this.projectName,
+    this.deliveryAddress,
+    this.paymentTerms,
+    this.notes,
+    this.validUntil,
+    this.convertedOrderId,
+    this.erpnextQuotation,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  /// Check if quote is draft
+  bool get isDraft => status == QuoteStatus.draft;
+
+  /// Check if quote is sent
+  bool get isSent => status == QuoteStatus.sent;
+
+  /// Check if quote is accepted
+  bool get isAccepted => status == QuoteStatus.accepted;
+
+  /// Check if quote is rejected
+  bool get isRejected => status == QuoteStatus.rejected;
+
+  /// Check if quote is expired
+  bool get isExpired =>
+      status == QuoteStatus.expired ||
+      (validUntil != null && DateTime.now().isAfter(validUntil!));
+
+  /// Check if quote is converted to order
+  bool get isConverted => status == QuoteStatus.converted;
+
+  /// Check if quote can be edited
+  bool get canBeEdited => isDraft;
+
+  /// Check if quote can be sent
+  bool get canBeSent => isDraft;
+
+  /// Check if quote can be converted to order
+  bool get canBeConverted => isAccepted && !isExpired;
+
+  /// Get discount percentage
+  double get discountPercentage {
+    if (totalAmount == 0) return 0;
+    return (discountAmount / totalAmount) * 100;
+  }
+
+  /// Get days until expiry
+  int? get daysUntilExpiry {
+    if (validUntil == null) return null;
+    final days = validUntil!.difference(DateTime.now()).inDays;
+    return days > 0 ? days : 0;
+  }
+
+  /// Check if expiring soon (within 7 days)
+  bool get isExpiringSoon {
+    if (validUntil == null || isExpired) return false;
+    final days = daysUntilExpiry;
+    return days != null && days > 0 && days <= 7;
+  }
+
+  /// Copy with method for immutability
+  Quote copyWith({
+    String? quoteId,
+    String? quoteNumber,
+    String? userId,
+    QuoteStatus? status,
+    double? totalAmount,
+    double? discountAmount,
+    double? finalAmount,
+    String? projectName,
+    DeliveryAddress? deliveryAddress,
+    String? paymentTerms,
+    String? notes,
+    DateTime? validUntil,
+    String? convertedOrderId,
+    String? erpnextQuotation,
+    DateTime? createdAt,
+    DateTime? updatedAt,
+  }) {
+    return Quote(
+      quoteId: quoteId ?? this.quoteId,
+      quoteNumber: quoteNumber ?? this.quoteNumber,
+      userId: userId ?? this.userId,
+      status: status ?? this.status,
+      totalAmount: totalAmount ?? this.totalAmount,
+      discountAmount: discountAmount ?? this.discountAmount,
+      finalAmount: finalAmount ?? this.finalAmount,
+      projectName: projectName ?? this.projectName,
+      deliveryAddress: deliveryAddress ?? this.deliveryAddress,
+      paymentTerms: paymentTerms ?? this.paymentTerms,
+      notes: notes ?? this.notes,
+      validUntil: validUntil ?? this.validUntil,
+      convertedOrderId: convertedOrderId ?? this.convertedOrderId,
+      erpnextQuotation: erpnextQuotation ?? this.erpnextQuotation,
+      createdAt: createdAt ?? this.createdAt,
+      updatedAt: updatedAt ?? this.updatedAt,
+    );
+  }
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+
+    return other is Quote &&
+        other.quoteId == quoteId &&
+        other.quoteNumber == quoteNumber &&
+        other.userId == userId &&
+        other.status == status &&
+        other.totalAmount == totalAmount &&
+        other.discountAmount == discountAmount &&
+        other.finalAmount == finalAmount;
+  }
+
+  @override
+  int get hashCode {
+    return Object.hash(
+      quoteId,
+      quoteNumber,
+      userId,
+      status,
+      totalAmount,
+      discountAmount,
+      finalAmount,
+    );
+  }
+
+  @override
+  String toString() {
+    return 'Quote(quoteId: $quoteId, quoteNumber: $quoteNumber, status: $status, '
+        'finalAmount: $finalAmount, validUntil: $validUntil)';
+  }
+}

lib/features/quotes/domain/entities/quote_item.dart

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+/// Domain Entity: Quote Item
+///
+/// Represents a single line item in a quotation.
+library;
+
+/// Quote Item Entity
+///
+/// Contains item-level information in a quote:
+/// - Product reference
+/// - Quantity and pricing
+/// - Price negotiation
+/// - Discounts
+class QuoteItem {
+  /// Unique quote item identifier
+  final String quoteItemId;
+
+  /// Quote ID this item belongs to
+  final String quoteId;
+
+  /// Product ID
+  final String productId;
+
+  /// Quantity quoted
+  final double quantity;
+
+  /// Original/list price per unit
+  final double originalPrice;
+
+  /// Negotiated price per unit
+  final double negotiatedPrice;
+
+  /// Discount percentage
+  final double discountPercent;
+
+  /// Subtotal (quantity * negotiatedPrice)
+  final double subtotal;
+
+  /// Item notes
+  final String? notes;
+
+  const QuoteItem({
+    required this.quoteItemId,
+    required this.quoteId,
+    required this.productId,
+    required this.quantity,
+    required this.originalPrice,
+    required this.negotiatedPrice,
+    required this.discountPercent,
+    required this.subtotal,
+    this.notes,
+  });
+
+  /// Calculate subtotal at original price
+  double get subtotalAtOriginalPrice => quantity * originalPrice;
+
+  /// Calculate discount amount per unit
+  double get discountPerUnit => originalPrice - negotiatedPrice;
+
+  /// Calculate total discount amount
+  double get totalDiscountAmount =>
+      (quantity * originalPrice) - (quantity * negotiatedPrice);
+
+  /// Calculate effective discount percentage
+  double get effectiveDiscountPercentage {
+    if (originalPrice == 0) return 0;
+    return ((originalPrice - negotiatedPrice) / originalPrice) * 100;
+  }
+
+  /// Check if item has discount
+  bool get hasDiscount => negotiatedPrice < originalPrice;
+
+  /// Check if price was negotiated
+  bool get isNegotiated => negotiatedPrice != originalPrice;
+
+  /// Copy with method for immutability
+  QuoteItem copyWith({
+    String? quoteItemId,
+    String? quoteId,
+    String? productId,
+    double? quantity,
+    double? originalPrice,
+    double? negotiatedPrice,
+    double? discountPercent,
+    double? subtotal,
+    String? notes,
+  }) {
+    return QuoteItem(
+      quoteItemId: quoteItemId ?? this.quoteItemId,
+      quoteId: quoteId ?? this.quoteId,
+      productId: productId ?? this.productId,
+      quantity: quantity ?? this.quantity,
+      originalPrice: originalPrice ?? this.originalPrice,
+      negotiatedPrice: negotiatedPrice ?? this.negotiatedPrice,
+      discountPercent: discountPercent ?? this.discountPercent,
+      subtotal: subtotal ?? this.subtotal,
+      notes: notes ?? this.notes,
+    );
+  }
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+
+    return other is QuoteItem &&
+        other.quoteItemId == quoteItemId &&
+        other.quoteId == quoteId &&
+        other.productId == productId &&
+        other.quantity == quantity &&
+        other.originalPrice == originalPrice &&
+        other.negotiatedPrice == negotiatedPrice &&
+        other.subtotal == subtotal;
+  }
+
+  @override
+  int get hashCode {
+    return Object.hash(
+      quoteItemId,
+      quoteId,
+      productId,
+      quantity,
+      originalPrice,
+      negotiatedPrice,
+      subtotal,
+    );
+  }
+
+  @override
+  String toString() {
+    return 'QuoteItem(quoteItemId: $quoteItemId, productId: $productId, '
+        'quantity: $quantity, originalPrice: $originalPrice, '
+        'negotiatedPrice: $negotiatedPrice, subtotal: $subtotal)';
+  }
+}