import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:mirror_protocol/mirror_protocol.dart';
import 'package:mirror_ui/mirror_ui.dart';
import 'providers/display_state_provider.dart';
import 'screens/dashboard_screen.dart';
import 'screens/workout_screen.dart';
import 'screens/media_screen.dart';
import 'screens/standby_screen.dart';

class MirrorDisplayApp extends ConsumerWidget {
  const MirrorDisplayApp({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final activeScreen = ref.watch(
      displayStateProvider.select((s) => s.activeScreen),
    );

    return MaterialApp(
      title: 'Mirror OS',
      debugShowCheckedModeBanner: false,
      theme: MirrorTheme.dark,
      home: Scaffold(
        body: AnimatedSwitcher(
          duration: MirrorAnimations.screenTransitionDuration,
          transitionBuilder: MirrorAnimations.screenTransitionBuilder,
          child: _buildScreen(activeScreen),
        ),
      ),
      shortcuts: {
        LogicalKeySet(LogicalKeyboardKey.escape): const _ExitIntent(),
      },
      actions: {
        _ExitIntent: CallbackAction<_ExitIntent>(
          onInvoke: (_) => SystemNavigator.pop(),
        ),
      },
    );
  }

  Widget _buildScreen(ScreenType screen) => switch (screen) {
        ScreenType.dashboard => const DashboardScreen(key: ValueKey('dashboard')),
        ScreenType.workout => const WorkoutScreen(key: ValueKey('workout')),
        ScreenType.media => const MediaScreen(key: ValueKey('media')),
        ScreenType.standby => const StandbyScreen(key: ValueKey('standby')),
      };
}

class _ExitIntent extends Intent {
  const _ExitIntent();
}