125 lines
3.4 KiB
Dart
125 lines
3.4 KiB
Dart
class InvoiceLineItem {
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final int? productId;
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final String? productCode;
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final String? productName;
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final String? mainUnit;
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final String? secondaryUnit;
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final num? unitConversionFactor; // 1 main = factor * secondary
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String? selectedUnit;
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num quantity;
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// unit price handling
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String unitPriceSource; // manual | base | priceList
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num unitPrice; // price per selected unit
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// base prices on main unit (as provided by product)
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final num? baseSalesPriceMainUnit;
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final num? basePurchasePriceMainUnit;
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// discount
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String discountType; // percent | amount
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num discountValue; // either percentage (0-100) or absolute amount
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// tax
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num taxRate; // percent, editable by user
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// inventory/constraints
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final int? minOrderQty;
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final bool trackInventory;
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final int? warehouseId; // انبار انتخابی برای ردیف
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// presentation
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String? description;
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InvoiceLineItem({
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this.productId,
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this.productCode,
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this.productName,
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this.mainUnit,
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this.secondaryUnit,
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this.unitConversionFactor,
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this.selectedUnit,
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this.description,
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this.unitPriceSource = 'base',
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this.unitPrice = 0,
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this.quantity = 1,
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this.discountType = 'amount',
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this.discountValue = 0,
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this.taxRate = 0,
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this.baseSalesPriceMainUnit,
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this.basePurchasePriceMainUnit,
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this.minOrderQty,
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this.trackInventory = false,
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this.warehouseId,
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});
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InvoiceLineItem copyWith({
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int? productId,
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String? productCode,
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String? productName,
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String? mainUnit,
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String? secondaryUnit,
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num? unitConversionFactor,
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String? selectedUnit,
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num? quantity,
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String? unitPriceSource,
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num? unitPrice,
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String? discountType,
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num? discountValue,
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num? taxRate,
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String? description,
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num? baseSalesPriceMainUnit,
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num? basePurchasePriceMainUnit,
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int? minOrderQty,
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bool? trackInventory,
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int? warehouseId,
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}) {
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return InvoiceLineItem(
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productId: productId ?? this.productId,
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productCode: productCode ?? this.productCode,
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productName: productName ?? this.productName,
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mainUnit: mainUnit ?? this.mainUnit,
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secondaryUnit: secondaryUnit ?? this.secondaryUnit,
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unitConversionFactor: unitConversionFactor ?? this.unitConversionFactor,
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selectedUnit: selectedUnit ?? this.selectedUnit,
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quantity: quantity ?? this.quantity,
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unitPriceSource: unitPriceSource ?? this.unitPriceSource,
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unitPrice: unitPrice ?? this.unitPrice,
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discountType: discountType ?? this.discountType,
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discountValue: discountValue ?? this.discountValue,
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taxRate: taxRate ?? this.taxRate,
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description: description ?? this.description,
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baseSalesPriceMainUnit: baseSalesPriceMainUnit ?? this.baseSalesPriceMainUnit,
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basePurchasePriceMainUnit: basePurchasePriceMainUnit ?? this.basePurchasePriceMainUnit,
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minOrderQty: minOrderQty ?? this.minOrderQty,
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trackInventory: trackInventory ?? this.trackInventory,
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warehouseId: warehouseId ?? this.warehouseId,
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);
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}
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num get subtotal => quantity * unitPrice;
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num get discountAmount {
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if (discountType == 'percent') {
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final p = discountValue;
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if (p <= 0) return 0;
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return subtotal * (p / 100);
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}
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return discountValue;
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}
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num get taxableAmount {
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final base = subtotal - discountAmount;
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return base < 0 ? 0 : base;
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}
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num get taxAmount => taxableAmount * (taxRate / 100);
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num get total => taxableAmount + taxAmount;
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}
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