import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../backend/event.dart';
import 'features/peers/controller/peers_controller.dart';
import 'features/transfer/controller/transfers_controller.dart';
import 'navigation/home_shell.dart';
import 'sync/backend_event_sync.dart';
import 'theme/app_theme.dart';
import 'theme/theme_mode_controller.dart';

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

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final themeMode = ref.watch(themeModeControllerProvider);

    ref.listen<AsyncValue<AppEvent>>(backendEventSyncProvider, (
      previous,
      next,
    ) {
      next.whenData((event) {
        switch (event) {
          case AppEvent_PeerConnectOrUpdated(:final peer):
            ref.read(peersControllerProvider.notifier).upsertPeer(peer);
          case AppEvent_PeerDisconnected(:final id):
            ref.read(peersControllerProvider.notifier).removePeer(id);
          case AppEvent_TransferAdded(:final transfer):
            ref
                .read(transfersControllerProvider.notifier)
                .upsertTransfer(transfer);
          case AppEvent_TransferStatusChanged(:final transfer):
            ref
                .read(transfersControllerProvider.notifier)
                .upsertTransfer(transfer);
          case AppEvent_TransferRemoved(:final id):
            ref.read(transfersControllerProvider.notifier).removeTransfer(id);
          case AppEvent_TransferClear():
            ref
                .read(transfersControllerProvider.notifier)
                .clearTransfersLocal();
          case AppEvent_TransferProgressChanged(:final id, :final progress):
            final currentBytes = progress < 0 ? 0.0 : progress;
            ref
                .read(transfersControllerProvider.notifier)
                .updateProgress(id, currentBytes);
        }
      });
    });

    return MaterialApp(
      title: 'Mesh Drop',
      debugShowCheckedModeBanner: false,
      themeMode: themeMode,
      theme: AppTheme.lightTheme,
      darkTheme: AppTheme.darkTheme,
      home: const HomeShell(),
    );
  }
}