restaurant_page

part of 'pages.dart';

class RestaurantPage extends StatelessWidget {
  static const routeName = '/restaurant_page';

  Widget _buildListRestaurant(BuildContext context) {
    Future<String> _loadAsset(BuildContext context) async {
      return await DefaultAssetBundle.of(context)
          .loadString('assets/local_restaurant.json');
    }

    Future<List<RestaurantItem>> _loadRestaurants(BuildContext context) async {
      String jsonString = await _loadAsset(context);
      return parseJson(jsonString).restaurants;
    }

    return FutureBuilder(
      future: _loadRestaurants(context),
      builder: (context, snapshot) {
        final List<RestaurantItem> restaurants =
            snapshot.data as List<RestaurantItem>;
        if (restaurants.isEmpty || (restaurants.length == 0)) {
          return _buildNullRestaurant(context);
        } else {
          return _buildListRecomended(context, restaurants);
        }
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return CustomScaffold(body: _buildListRestaurant(context));
  }

  Widget _buildListRecomended(
      BuildContext context, List<RestaurantItem> restaurants) {
    return Padding(
      padding: EdgeInsets.only(top: 85, bottom: 12),
      child: ListView.builder(
        itemBuilder: (context, index) {
          final recomendedRestaurant = restaurants[index];
          return Padding(
            padding: EdgeInsets.only(left: 16, right: 16),
            child: GestureDetector(
                onTap: () {
                  Navigator.pushNamed(context, DetailRestaurant.routeName,
                      arguments: recomendedRestaurant);
                },
                child: RestaurantListItem(restaurant: recomendedRestaurant)),
          );
        },
        itemCount: restaurants.length,
      ),
    );
  }

  Widget _buildNullRestaurant(BuildContext context) {
    return Stack(
      children: [
        Center(
            child: Lottie.asset('assets/nodata.json',
                width: 250, height: 250, fit: BoxFit.fill))
      ],
    );
  }
}