backup. before shop update

lib/models/cart_line_item.dart

@@ -0,0 +1,54 @@
+
+
+import 'dart:convert';
+import 'package:uuid/uuid.dart';
+
+import 'product.dart';
+
+class CartLineItem {
+  int id;
+  double unitPrice;
+  double totalPrice;
+  Product product;
+  String name;
+  String description;
+  double quantity;
+  String uuid;
+  String parentUuid;
+
+  CartLineItem() {
+    uuid = Uuid().v4();
+  }
+
+  CartLineItem.fromJson(Map<String, dynamic> json)
+    : id = json['id'],
+      unitPrice = double.parse(json['unit_price'].toString()),
+      totalPrice = json['total_price'] != null ? double.parse(json['total_price'].toString()) : double.parse(json['unit_price'].toString()) * double.parse(json['quantity'].toString()),
+      product = json['product'] != null ? Product.fromJson(json['product']) : null,
+      name = json['name'],
+      description = json['description'],
+      quantity = double.parse(json['quantity'].toString()),
+      uuid = Uuid().v4();
+
+  Map<String, dynamic> toJson() => {
+    'id': id,
+    'unit_price': unitPrice,
+    'total_price': totalPrice,
+    'product': product,
+    'name': name,
+    'description': description,
+    'quantity': quantity,
+    'uuid': uuid,
+    'parentUuid': parentUuid
+  };
+
+  @override
+  String toString() {
+    return json.encode(this);
+  }
+
+  double getTotalPrice() {
+    totalPrice = unitPrice * quantity;
+    return totalPrice;
+  }
+}