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

import 'providers/auth_provider.dart';
import 'screens/login_screen.dart';
import 'screens/dashboard_screen.dart';

void main() {
  runApp(
    MultiProvider(
      providers: [
        ChangeNotifierProvider(create: (_) => AuthProvider()),
      ],
      child: const RayhanApp(),
    ),
  );
}

class RayhanApp extends StatelessWidget {
  const RayhanApp({super.key});

  @override
  Widget build(BuildContext context) {
    final authProvider = context.watch<AuthProvider>();

    final router = GoRouter(
      initialLocation: '/login',
      redirect: (context, state) {
        final loggedIn = authProvider.isAuthenticated;
        final onLogin = state.matchedLocation == '/login';
        if (!loggedIn && !onLogin) return '/login';
        if (loggedIn && onLogin) return '/dashboard';
        return null;
      },
      routes: [
        GoRoute(path: '/login', builder: (_, __) => const LoginScreen()),
        GoRoute(path: '/dashboard', builder: (_, __) => const DashboardScreen()),
      ],
    );

    return MaterialApp.router(
      title: 'Rayhan ERP',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(
          seedColor: const Color(0xFF1565C0),
          brightness: Brightness.light,
        ),
        useMaterial3: true,
        fontFamily: 'Roboto',
      ),
      routerConfig: router,
    );
  }
}