import 'package:e_receipt_mobile/core/theme/app_colors.dart';
import 'package:e_receipt_mobile/domain/entities/terminal.dart';
import 'package:e_receipt_mobile/presentation/auth/session_controller.dart';
import 'package:e_receipt_mobile/presentation/home/home_screen.dart';
import 'package:e_receipt_mobile/presentation/login/login_page.dart';
import 'package:e_receipt_mobile/presentation/settings/theme_mode_provider.dart';
import 'package:e_receipt_mobile/presentation/terminal/terminal_next_screen.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();

  SystemChrome.setEnabledSystemUIMode(
    SystemUiMode.manual,
    overlays: SystemUiOverlay.values,
  );
  SystemChrome.setSystemUIOverlayStyle(
    const SystemUiOverlayStyle(
      statusBarColor: AppColors.primary,
      statusBarIconBrightness: Brightness.light,
      statusBarBrightness: Brightness.dark,
    ),
  );
  runApp(const ProviderScope(child: EReceiptApp()));
}

class EReceiptApp extends ConsumerWidget {
  const EReceiptApp({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final themeMode = ref.watch(appThemeModeProvider);

    return MaterialApp(
      title: 'E-Receipt',
      debugShowCheckedModeBanner: false,
      themeMode: themeMode,
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(
          seedColor: AppColors.primary,
        ),
        primaryColor: AppColors.primary,
        appBarTheme: const AppBarTheme(
          backgroundColor: AppColors.primary,
          foregroundColor: Colors.white,
          systemOverlayStyle: SystemUiOverlayStyle(
            statusBarColor: AppColors.primary,
            statusBarIconBrightness: Brightness.light,
            statusBarBrightness: Brightness.dark,
          ),
        ),
        useMaterial3: true,
      ),
      darkTheme: ThemeData(
        colorScheme: ColorScheme.fromSeed(
          seedColor: AppColors.primary,
          brightness: Brightness.dark,
        ),
        appBarTheme: const AppBarTheme(
          backgroundColor: AppColors.primary,
          foregroundColor: Colors.white,
          systemOverlayStyle: SystemUiOverlayStyle(
            statusBarColor: AppColors.primary,
            statusBarIconBrightness: Brightness.light,
            statusBarBrightness: Brightness.dark,
          ),
        ),
        useMaterial3: true,
      ),
      home: const AppRoot(),
    );
  }
}

class AppRoot extends ConsumerWidget {
  const AppRoot({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final user = ref.watch(sessionControllerProvider);
    if (user == null) {
      return const LoginPage();
    }

    final role = user.role.trim().toLowerCase();
    if (role == 'cashier') {
      final serial = user.username.trim().toUpperCase();
      final terminal = Terminal(serial: serial, name: serial);
      return TerminalNextScreen(merchantName: serial, terminal: terminal);
    }

    return HomeScreen(user: user);
  }
}