OpenMediacenterMobileFlutter/lib/utils/feature_context.dart

import 'package:flutter/material.dart';
import 'package:openmediacentermobile/login/login_context.dart';
import '../api/settings_api.dart';

// todo maybe instead of feature context a context for all settings?
class FeatureContext extends InheritedWidget {
  const FeatureContext(this.tvShowEnabled, this.fullDeleteEnabled,
      {Key? key, required Widget child})
      : super(key: key, child: child);

  final bool tvShowEnabled;
  final bool fullDeleteEnabled;

  static FeatureContext of(BuildContext context) {
    final FeatureContext? result =
        context.dependOnInheritedWidgetOfExactType<FeatureContext>();
    assert(result != null, 'No LoginContext found in context');
    return result!;
  }

  @override
  bool updateShouldNotify(FeatureContext old) {
    return tvShowEnabled != old.tvShowEnabled ||
        fullDeleteEnabled != old.fullDeleteEnabled;
  }
}

class FeatureContainer extends StatefulWidget {
  const FeatureContainer({Key? key, required this.child}) : super(key: key);
  final Widget child;

  @override
  State<FeatureContainer> createState() => _FeatureContainerState();
}

class _FeatureContainerState extends State<FeatureContainer> {
  bool? tvShowEnabled;
  bool? fullDeleteEnabled;
  bool fetcherror = false;

  @override
  void initState() {
    loadInitialData()
        .then((value) => setState(
              () {
                fullDeleteEnabled = value.fullDeleteEnabled;
                tvShowEnabled = value.tvShowEnabled;
              },
            ))
        .catchError((err) => setState(() => fetcherror = true));

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    if (fetcherror) {
      final loginctx = LoginContext.of(context);

      return MaterialApp(
        home: Scaffold(
          body: Center(
            child:
                Column(mainAxisAlignment: MainAxisAlignment.center, children: [
              Text("Fetch error"),
              MaterialButton(
                onPressed: () => loginctx.onLoggin(false),
                child: Text("Logout"),
              )
            ]),
          ),
        ),
      );
    } else if (tvShowEnabled == null || fullDeleteEnabled == null) {
      return MaterialApp(
        home: Scaffold(
          body: Container(
            color: Colors.white,
            child: Center(
                child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [CircularProgressIndicator(), Text("loading features")],
            )),
          ),
        ),
      );
    } else {
      return FeatureContext(tvShowEnabled!, fullDeleteEnabled!,
          child: widget.child);
    }
  }
}