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

class ChooseSimPage extends StatefulWidget {
  const ChooseSimPage({Key? key}) : super(key: key);

  @override
  _ChooseSimPageState createState() => _ChooseSimPageState();
}

class _ChooseSimPageState extends State<ChooseSimPage> {
  List<SimCard> _simCards = [];
  int? _selectedSimIndex;

  @override
  void initState() {
    super.initState();
    _fetchSimCards();
  }

  Future<void> _fetchSimCards() async {
    try {
      bool permissionsGranted = await MobileNumber.hasPhonePermission;
      if (!permissionsGranted) {
        await MobileNumber.requestPhonePermission;
        permissionsGranted = await MobileNumber.hasPhonePermission;
      }
      if (permissionsGranted) {
        List<SimCard>? simCards = await MobileNumber.getSimCards;
        if (simCards != null && mounted) {
          setState(() {
            _simCards = simCards;
            _selectedSimIndex = 0;
          });
        } else {
          print('No SIM cards found');
        }
      } else {
        print('Phone permission denied');
      }
    } catch (e) {
      print('Failed to get SIM cards: $e');
    }
  }

  void _onSimSelected(int? index) {
    if (index != null) {
      setState(() {
        _selectedSimIndex = index;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.black,
      appBar: AppBar(
        title: const Text('Choose SIM'),
      ),
      body: _simCards.isEmpty
          ? const Center(
        child: Text(
          'No SIM cards found',
          style: TextStyle(color: Colors.white),
        ),
      )
          : ListView.builder(
        itemCount: _simCards.length,
        itemBuilder: (context, index) {
          final sim = _simCards[index];
          return ListTile(
            title: Text(
              'SIM ${index + 1}',
              style: const TextStyle(color: Colors.white),
            ),
            subtitle: Text(
              'Operator: ${sim.carrierName ?? 'N/A'}',
              style: const TextStyle(color: Colors.grey),
            ),
            trailing: Radio<int>(
              value: index,
              groupValue: _selectedSimIndex,
              onChanged: _onSimSelected,
            ),
          );
        },
      ),
    );
  }
}