monorepo/dialer/lib/services/call_service.dart

import 'package:flutter/services.dart';

// Service to manage call-related operations
class CallService {
  static const MethodChannel _channel = MethodChannel('call_service');

  // Function to make a GSM call
  Future<void> makeGsmCall(String phoneNumber) async {
    try {
      await _channel.invokeMethod('makeGsmCall', {"phoneNumber": phoneNumber});
    } catch (e) {
      print("Error making call: $e");
      rethrow;
    }
  }

  // Function to hang up the current call
  Future<void> hangUpCall() async {
    try {
      await _channel.invokeMethod('hangUpCall');
    } catch (e) {
      print("Error hanging up call: $e");
      rethrow;
    }
  }
}