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

import 'screens/home_screen.dart';
import 'screens/login_screen.dart';
import 'services/auth_service.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Permission.microphone.request();
  runApp(const WalkieTalkieApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'WalkieTalkie',
      theme: ThemeData(
        brightness: Brightness.dark,
        colorScheme: ColorScheme.dark(
          primary: const Color(0xFF00C853),
          secondary: const Color(0xFF1DE9B6),
          surface: const Color(0xFF1C1C1E),
        ),
        scaffoldBackgroundColor: Colors.black,
        useMaterial3: true,
      ),
      home: const _Splash(),
    );
  }
}

class _Splash extends StatefulWidget {
  const _Splash();

  @override
  State<_Splash> createState() => _SplashState();
}

class _SplashState extends State<_Splash> {
  bool _loading = false;

  Future<void> _onTap() async {
    if (_loading) return;
    setState(() => _loading = true);
    final loggedIn = await AuthService().isLoggedIn();
    if (!mounted) return;
    Navigator.pushReplacement(
      context,
      MaterialPageRoute(
        builder: (_) => loggedIn ? const HomeScreen() : const LoginScreen(),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      onTap: _onTap,
      child: Scaffold(
        backgroundColor: Colors.black,
        body: Center(
          child: Padding(
            padding: const EdgeInsets.symmetric(horizontal: 24),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: [
                Container(
                  width: 64,
                  height: 64,
                  decoration: const BoxDecoration(
                    color: Colors.white,
                    shape: BoxShape.circle,
                  ),
                  padding: const EdgeInsets.all(10),
                  child: Image.asset(
                    'assets/images/logo.png',
                    fit: BoxFit.contain,
                  ),
                ),
                const SizedBox(height: 14),
                const Text(
                  'مرکز هوش مصنوعی',
                  style: TextStyle(
                    color: Colors.white,
                    fontSize: 12,
                    fontWeight: FontWeight.bold,
                    letterSpacing: 0.4,
                  ),
                  textAlign: TextAlign.center,
                ),
                const SizedBox(height: 3),
                const Text(
                  'و فناوری‌های نو ظهور سپاه',
                  style: TextStyle(
                    color: Color(0xFF00C853),
                    fontSize: 10,
                    letterSpacing: 0.3,
                  ),
                  textAlign: TextAlign.center,
                ),
                const SizedBox(height: 16),
                if (_loading)
                  const SizedBox(
                    width: 16,
                    height: 16,
                    child: CircularProgressIndicator(
                      color: Color(0xFF00C853),
                      strokeWidth: 2,
                    ),
                  )
                else
                  const Text(
                    'ضربه بزنید',
                    style: TextStyle(color: Colors.white24, fontSize: 9),
                  ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}