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

import 'providers/auth_provider.dart';
import 'providers/chat_provider.dart';
import 'screens/login_screen.dart';
import 'screens/chat_screen.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(const CaptainMobileApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MultiProvider(
      providers: [
        ChangeNotifierProvider(create: (_) => AuthProvider()),
        ChangeNotifierProxyProvider<AuthProvider, ChatProvider>(
          create: (_) => ChatProvider(),
          update: (_, auth, chat) => chat!..updateAuth(auth),
        ),
      ],
      child: MaterialApp(
        title: 'Captain Claude',
        debugShowCheckedModeBanner: false,
        theme: _buildTheme(Brightness.dark),
        home: const AuthWrapper(),
      ),
    );
  }

  ThemeData _buildTheme(Brightness brightness) {
    final baseTheme = ThemeData(
      brightness: brightness,
      useMaterial3: true,
      colorScheme: ColorScheme.fromSeed(
        seedColor: const Color(0xFFD97706), // Amber/orange accent
        brightness: brightness,
      ),
    );

    return baseTheme.copyWith(
      textTheme: GoogleFonts.interTextTheme(baseTheme.textTheme),
      scaffoldBackgroundColor: const Color(0xFF1A1A1A),
      appBarTheme: const AppBarTheme(
        backgroundColor: Color(0xFF1A1A1A),
        elevation: 0,
      ),
      cardTheme: const CardTheme(
        color: Color(0xFF2D2D2D),
      ),
      inputDecorationTheme: InputDecorationTheme(
        filled: true,
        fillColor: const Color(0xFF2D2D2D),
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12),
          borderSide: BorderSide.none,
        ),
        contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
      ),
    );
  }
}

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

  @override
  Widget build(BuildContext context) {
    return Consumer<AuthProvider>(
      builder: (context, auth, _) {
        if (auth.isLoading) {
          return const Scaffold(
            body: Center(
              child: CircularProgressIndicator(),
            ),
          );
        }

        if (auth.isAuthenticated) {
          return const ChatScreen();
        }

        return const LoginScreen();
      },
    );
  }
}