/// A parsed receipt row shown on the review screen.
library;

import 'receipt_bounds.dart';

class LineItem {
  LineItem({
    required this.id,
    required this.name,
    required this.price,
    this.quantity,
    this.unitPrice,
    this.discount = 0,
    this.sourceBounds,
    this.needsManualReview = false,
  });

  final String id;
  final String name;

  /// Line total after any discount.
  final double price;
  final int? quantity;
  final double? unitPrice;

  /// Negative amount when a discount was folded into [price].
  final double discount;

  /// Region on the receipt photo (normalized 0–1) used when parsing this line.
  final ReceiptBounds? sourceBounds;

  /// True when the parser could not confidently resolve price/qty for this line.
  final bool needsManualReview;

  bool get hasDiscount => discount != 0;

  /// List price before a folded discount. Equals [price] when there is none.
  double get originalPrice {
    if (!hasDiscount) return price;
    return ((price - discount) * 100).round() / 100;
  }

  LineItem copyWith({
    String? id,
    String? name,
    double? price,
    int? quantity,
    double? unitPrice,
    double? discount,
    ReceiptBounds? sourceBounds,
    bool? needsManualReview,
    bool clearQuantity = false,
    bool clearSourceBounds = false,
  }) {
    return LineItem(
      id: id ?? this.id,
      name: name ?? this.name,
      price: price ?? this.price,
      quantity: clearQuantity ? null : (quantity ?? this.quantity),
      unitPrice: clearQuantity ? null : (unitPrice ?? this.unitPrice),
      discount: discount ?? this.discount,
      sourceBounds: clearSourceBounds ? null : (sourceBounds ?? this.sourceBounds),
      needsManualReview: needsManualReview ?? this.needsManualReview,
    );
  }
}