import 'dart:async';

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

import '../services/firebase_service.dart';

class ACConfigProvider extends ChangeNotifier {
  bool _hasConfig = false;
  String _protocol = 'UNKNOWN';
  int _model = -1;

  bool get hasConfig => _hasConfig;
  String get protocol => _protocol;
  int get model => _model;

  StreamSubscription<DatabaseEvent>? _subscription;

  void startListening() {
    _subscription?.cancel();
    _subscription = FirebaseService.acStateRef.onValue.listen((event) {
      if (event.snapshot.value == null) {
        _hasConfig = false;
      } else {
        final data = Map<dynamic, dynamic>.from(event.snapshot.value as Map);
        _hasConfig =
            data['has_config'] == true ||
            (data['protocol'] != null && data['protocol'] != 'UNKNOWN');
        _protocol = data['protocol']?.toString() ?? 'UNKNOWN';
        _model = int.tryParse(data['model']?.toString() ?? '-1') ?? -1;
      }
      notifyListeners();
    });
  }

  @override
  void dispose() {
    _subscription?.cancel();
    super.dispose();
  }
}