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

import '../../data/sources/localiser/realtime_data_client.dart';
import '../../data/sources/localiser/session_client.dart';
import '../../providers.dart';

class StartupScreen extends ConsumerStatefulWidget {
  const StartupScreen({super.key});

  @override
  ConsumerState<StartupScreen> createState() => _StartupScreenState();
}

class _StartupScreenState extends ConsumerState<StartupScreen> {
  @override
  void initState() {
    super.initState();
    _bootstrap();
  }

  Future<void> _bootstrap() async {
    final store = ref.read(credentialStoreProvider);

    final config = await store.loadServer();
    if (!mounted) return;

    if (config == null) {
      context.go('/connect');
      return;
    }

    final creds = await store.load();
    if (!mounted) return;

    if (creds == null) {
      context.go('/connect');
      return;
    }

    try {
      final tokenResponse =
          await SessionClient(config: config).login(creds.username, creds.password);
      if (!mounted) return;

      final token = tokenResponse.token;
      ref.read(serverConfigProvider.notifier).state = config;
      ref.read(authTokenProvider.notifier).state = token;

      final realtime = RealtimeDataClient(config: config, token: token);
      await realtime.connect();
      if (!mounted) return;

      ref.read(realtimeDataClientProvider.notifier).state = realtime;
      context.go('/floorplan');
    } catch (_) {
      if (mounted) context.go('/connect');
    }
  }

  @override
  Widget build(BuildContext context) {
    return const Scaffold(
      body: Center(child: CircularProgressIndicator()),
    );
  }
}