import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import 'package:miaoji_zhang/shared/services/current_ledger_store.dart';
import 'package:miaoji_zhang/shared/services/session_store.dart';
import 'package:miaoji_zhang/shared/theme/app_theme.dart';
import 'package:miaoji_zhang/shared/update/update_coordinator.dart';
import 'package:miaoji_zhang/shared/version.dart';
import 'package:miaoji_zhang/shared/widgets/brand_logo.dart';

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

  @override
  State<SplashPage> createState() => _SplashPageState();
}

class _SplashPageState extends State<SplashPage> {
  @override
  void initState() {
    super.initState();
    _bootstrap();
  }

  void _finishStartup(String location) {
    if (!mounted) return;
    context.go(location);
    UpdateCoordinator.instance.scheduleStartupCheck();
  }

  Future<void> _bootstrap() async {
    final session = SessionStore.instance;
    if (session.hasSession) {
      try {
        await CurrentLedgerStore.instance.loadCached(force: true);
      } catch (_) {
        // A damaged local cache must not leave the app trapped on the splash page.
      }
    }
    if (!mounted) return;
    if (!session.hasSession) {
      _finishStartup('/login');
      return;
    }

    if (!session.onboardingDone && !session.shouldUseLocalOnly) {
      _finishStartup('/onboarding');
    } else if (session.appMode == 'ai' && !session.shouldUseLocalOnly) {
      _finishStartup('/ai-mode');
    } else {
      _finishStartup('/home');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            const BrandLogo(size: 90),
            SizedBox(height: 24),
            CircularProgressIndicator(strokeWidth: 2, color: AppTheme.primary),
            SizedBox(height: 16),
            Text(
              AppVersion.display,
              style: TextStyle(fontSize: 10, color: context.jz.text3),
            ),
          ],
        ),
      ),
    );
  }
}