92 lines
1.7 KiB
Dart
92 lines
1.7 KiB
Dart
import 'package:cubetiq/model.dart';
|
|
|
|
void main(List<String> args) {
|
|
MyCart.addCart(
|
|
Cart(id: 1, name: 'Apple', qty: 1),
|
|
);
|
|
|
|
MyCart.show();
|
|
|
|
MyCart.addCart(
|
|
Cart(id: 1, name: 'Apple', qty: 2),
|
|
);
|
|
|
|
MyCart.show();
|
|
|
|
MyCart.inc(1, qty: 2);
|
|
|
|
MyCart.show();
|
|
|
|
MyCart.dec(1, qty: 4);
|
|
|
|
MyCart.show();
|
|
}
|
|
|
|
class Cart extends BaseModel<Cart> {
|
|
final int id;
|
|
final String? name;
|
|
double qty;
|
|
|
|
Cart({this.id = -1, this.name, this.qty = 0});
|
|
|
|
@override
|
|
Cart fromMap(Map<String, dynamic> map) {
|
|
return Cart(
|
|
id: map['id'],
|
|
name: map['name'],
|
|
qty: map['qty'],
|
|
);
|
|
}
|
|
|
|
@override
|
|
Map<String, dynamic> toMap() {
|
|
return {
|
|
'id': id,
|
|
'name': name,
|
|
'qty': qty,
|
|
};
|
|
}
|
|
}
|
|
|
|
class MyCart {
|
|
static final Map<int, Cart> carts = {};
|
|
|
|
static void inc(int id, {double qty = 1}) {
|
|
if (carts.containsKey(id)) {
|
|
carts[id]!.qty += qty;
|
|
}
|
|
}
|
|
|
|
static void dec(int id, {double qty = 1}) {
|
|
if (carts.containsKey(id)) {
|
|
carts[id]!.qty -= qty;
|
|
}
|
|
}
|
|
|
|
static void addCart(Cart cart) {
|
|
if (carts.containsKey(cart.id)) {
|
|
carts[cart.id]!.qty += cart.qty;
|
|
} else {
|
|
carts[cart.id] = cart;
|
|
}
|
|
}
|
|
|
|
static void removeCart(Cart cart) {
|
|
if (carts.containsKey(cart.id)) {
|
|
carts.remove(cart.id);
|
|
}
|
|
}
|
|
|
|
static void show() {
|
|
var data = carts.map((key, value) => MapEntry(key, value));
|
|
var json = data.map((key, value) => MapEntry(key, value.toJson()));
|
|
var model = json.map((key, value) => MapEntry(key, Cart().fromJson(value)));
|
|
print('================ Map =================');
|
|
print('$data');
|
|
print('================ Json =================');
|
|
print('$json');
|
|
print('================ Model =================');
|
|
print('$model');
|
|
}
|
|
}
|