import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:go_router/go_router.dart';

import '../features/mapflow/application/place_cubit.dart';
import '../features/mapflow/data/mapflow_api.dart';
import '../shared/location/current_location.dart';
import 'router/app_router.dart';
import 'theme/mapflow_theme.dart';

class MapflowApp extends StatefulWidget {
  const MapflowApp({super.key});

  @override
  State<MapflowApp> createState() => _MapflowAppState();
}

class _MapflowAppState extends State<MapflowApp> {
  late final PlaceCubit _placeCubit;
  late final GoRouter _router;

  @override
  void initState() {
    super.initState();
    _placeCubit = PlaceCubit(api: MapflowApi(), location: CurrentLocation())
      ..load();
    _router = createAppRouter();
  }

  @override
  void dispose() {
    _router.dispose();
    _placeCubit.close();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final shortcuts =
        Map<ShortcutActivator, Intent>.of(WidgetsApp.defaultShortcuts)
          ..[const SingleActivator(LogicalKeyboardKey.tab)] =
              const NextFocusIntent()
          ..[const SingleActivator(LogicalKeyboardKey.tab, shift: true)] =
              const PreviousFocusIntent();

    return BlocProvider.value(
      value: _placeCubit,
      child: MaterialApp.router(
        title: 'MapFlow',
        debugShowCheckedModeBanner: false,
        routerConfig: _router,
        scrollBehavior: const MaterialScrollBehavior().copyWith(
          scrollbars: true,
          dragDevices: {
            PointerDeviceKind.touch,
            PointerDeviceKind.mouse,
            PointerDeviceKind.trackpad,
            PointerDeviceKind.stylus,
          },
        ),
        theme: MapflowTheme.light(),
        builder: (context, child) {
          return Shortcuts(
            shortcuts: shortcuts,
            child: FocusTraversalGroup(
              policy: ReadingOrderTraversalPolicy(),
              child: child ?? const SizedBox.shrink(),
            ),
          );
        },
      ),
    );
  }
}