//  Label StoreMAX
//
//  Created by Anthony Gordon.
//  2020, WooSignal Ltd. All rights reserved.
//

//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

import 'package:flutter/material.dart';
import 'package:label_storemax/models/cart.dart';
import 'package:label_storemax/models/cart_line_item.dart';

Widget wsCartIcon(BuildContext context, {Key key}) {
  return StatefulBuilder(
    key: key,
    builder: (BuildContext context, StateSetter setState) => IconButton(
      icon: Stack(
        children: <Widget>[
          Positioned.fill(
              child: Align(
                child:
                    Icon(Icons.shopping_cart, size: 20, color: Colors.black87),
                alignment: Alignment.bottomCenter,
              ),
              bottom: 0),
          Positioned.fill(
              child: Align(
                child: FutureBuilder<List<CartLineItem>>(
                  future: Cart.getInstance.getCart(),
                  builder: (BuildContext context,
                      AsyncSnapshot<List<CartLineItem>> snapshot) {
                    switch (snapshot.connectionState) {
                      case ConnectionState.waiting:
                        return Text("");
                      default:
                        if (snapshot.hasError)
                          return Text("");
                        else
                          return new Text(
                            snapshot.data.length.toString(),
                            style: Theme.of(context).primaryTextTheme.bodyText1,
                            textAlign: TextAlign.center,
                          );
                    }
                  },
                ),
                alignment: Alignment.topCenter,
              ),
              top: 0)
        ],
      ),
      onPressed: () => Navigator.pushNamed(context, "/cart")
          .then((value) => setState(() {})),
    ),
  );
}