ha_client/lib/ui/view.class.dart

part of '../main.dart';

class HAView {
  List<HACard> cards = [];
  List<Entity> badges = [];
  Entity linkedEntity;
  String name;
  String id;
  String iconName;
  int count;

  HAView({
    this.name,
    this.id,
    this.count,
    this.iconName,
    List<Entity> childEntities
  }) {
    _fillView(childEntities ?? []);
  }

  void _fillView(List<Entity> childEntities) {
    List<HACard> autoGeneratedCards = [];
    childEntities.forEach((entity) {
      if (entity.isBadge) {
        badges.add(entity);
        TheLogger.debug("----Badge: ${entity.entityId}");
      } else {
        if (!entity.isGroup) {
          String groupIdToAdd = "${entity.domain}.${entity.domain}$count";
          if (autoGeneratedCards.every((HACard card) => card.id != groupIdToAdd )) {
            HACard card = HACard(
                id: groupIdToAdd,
                name: entity.domain
            );
            TheLogger.debug("----Creating card: $groupIdToAdd");
            card.entities.add(entity);
            autoGeneratedCards.add(card);
          } else {
            autoGeneratedCards.firstWhere((card) => card.id == groupIdToAdd).entities.add(entity);
          }
        } else {
          TheLogger.debug("----Card: ${entity.entityId}");
          HACard card = HACard(
              name: entity.displayName,
              id: entity.entityId,
              linkedEntity: entity
          );
          card.entities.addAll(entity.childEntities);
          cards.add(card);
        }
      }
    });
    cards.addAll(autoGeneratedCards);
  }

  Widget build(BuildContext context) {
    return HAViewWidget(
      view: this,
    );
  }
}

class HAViewWidget extends StatefulWidget {
  final HAView view;

  const HAViewWidget({
    Key key,
    this.view
  }) : super(key: key);

  @override
  State<StatefulWidget> createState() {
    return HAViewWidgetState();
  }

}

class HAViewWidgetState extends State<HAViewWidget> {

  StreamSubscription _refreshDataSubscription;
  Completer _refreshCompleter;

  @override
  void initState() {
    super.initState();
    _refreshDataSubscription = eventBus.on<RefreshDataFinishedEvent>().listen((event) {
      if ((_refreshCompleter != null) && (!_refreshCompleter.isCompleted)) {
        _refreshCompleter.complete();
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return RefreshIndicator(
      color: Colors.amber,
      child: ListView(
        physics: const AlwaysScrollableScrollPhysics(),
        children: _buildChildren(context),
      ),
      onRefresh: () => _refreshData(),
    );
  }

  List<Widget> _buildChildren(BuildContext context) {
    List<Widget> result = [];

    if (widget.view.badges.isNotEmpty) {
      result.insert(0,
          Wrap(
            alignment: WrapAlignment.center,
            spacing: 10.0,
            runSpacing: 1.0,
            children: _buildBadges(context),
          )
      );
    }

    widget.view.cards.forEach((HACard card){
      result.add(
          card.build(context)
      );
    });

    return result;
  }

  List<Widget> _buildBadges(BuildContext context) {
    List<Widget> result = [];
    widget.view.badges.forEach((Entity entity) {
      if (!entity.isHidden) {
        result.add(entity.buildBadgeWidget(context));
      }
    });
    return result;
  }

  Future _refreshData() {
    if ((_refreshCompleter != null) && (!_refreshCompleter.isCompleted)) {
      TheLogger.debug("Previous data refresh is still in progress");
    } else {
      _refreshCompleter = Completer();
      eventBus.fire(RefreshDataEvent());
    }
    return _refreshCompleter.future;
  }

  @override
  void dispose() {
    _refreshDataSubscription.cancel();
    super.dispose();
  }


}