134 lines
3.4 KiB
Dart
134 lines
3.4 KiB
Dart
/// 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)';
|
|
}
|
|
}
|