scan to list working fine

lib/models/line_item.dart

@@ -0,0 +1,35 @@
+/// A parsed receipt row shown on the review screen.
+library;
+
+class LineItem {
+  LineItem({
+    required this.id,
+    required this.name,
+    required this.price,
+    this.quantity,
+    this.unitPrice,
+  });
+
+  final String id;
+  final String name;
+  final double price;
+  final int? quantity;
+  final double? unitPrice;
+
+  LineItem copyWith({
+    String? id,
+    String? name,
+    double? price,
+    int? quantity,
+    double? unitPrice,
+    bool clearQuantity = 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),
+    );
+  }
+}

lib/models/product.dart

@@ -0,0 +1,28 @@
+/// A product stored after the user confirms a parsed receipt.
+library;
+
+class Product {
+  const Product({
+    required this.id,
+    required this.name,
+    required this.lastPrice,
+    required this.timesSeen,
+    required this.updatedAt,
+  });
+
+  final int id;
+  final String name;
+  final double lastPrice;
+  final int timesSeen;
+  final DateTime updatedAt;
+
+  factory Product.fromMap(Map<String, Object?> map) {
+    return Product(
+      id: map['id']! as int,
+      name: map['name']! as String,
+      lastPrice: (map['last_price']! as num).toDouble(),
+      timesSeen: map['times_seen']! as int,
+      updatedAt: DateTime.parse(map['updated_at']! as String),
+    );
+  }
+}