import 'package:connectivity_plus/connectivity_plus.dart';

/// Service for monitoring internet connectivity status
///
/// Wraps the connectivity_plus package and provides a simple stream
/// of online/offline status as boolean values.
class ConnectivityService {
  final Connectivity _connectivity;

  ConnectivityService({Connectivity? connectivity})
      : _connectivity = connectivity ?? Connectivity();

  /// Stream that emits true when online, false when offline
  ///
  /// This stream will emit a new value whenever the connectivity status changes.
  /// Note: This checks for network connectivity, not actual internet access.
  Stream<bool> get connectivityStream {
    return _connectivity.onConnectivityChanged.map((results) {
      // connectivity_plus now returns List<ConnectivityResult>
      // Check if any result is not 'none'
      return results.isNotEmpty &&
          !results.every((result) => result == ConnectivityResult.none);
    });
  }

  /// Check current connectivity status (one-time check)
  ///
  /// Returns true if device has network connectivity, false otherwise.
  Future<bool> isConnected() async {
    final results = await _connectivity.checkConnectivity();
    return results.isNotEmpty &&
        !results.every((result) => result == ConnectivityResult.none);
  }
}