import 'package:flutter/material.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:prosapp_web_app/models/city.dart';
import 'package:prosapp_web_app/models/country_entity.dart';

class CitiesProvider extends ChangeNotifier {
  List<City> cities = [];
  bool isLoading = true;

  final _citiesCollection =
      FirebaseFirestore.instance.collection('countries v2');

  CitiesProvider() {
    getCities();
  }

  getCoordsOfCity(String cityName) {
    if (cities.isEmpty) return null;

    for (var city in cities) {
      if (city.cityName == cityName) {
        return city.coordsOfCity;
      }
    }
    return null;
  }

  getCities() async {
    try {
      final querySnapshot = await _citiesCollection.doc('Colombia').get();

      final data = querySnapshot.data();

      final country = CountryEntity.fromDocument(data as Map<String, dynamic>);

      for (var region in country.regions) {
        for (var city in region.cities) {
          cities.add(City(
            cityName: city.name,
            coordsOfCity: city.coords,
            stateOfCity: region.name,
            countryOfCity: country.name,
          ));
        }
      }

      cities.sort((a, b) => a.cityName.compareTo(b.cityName));
    } catch (e) {
      print('Error obteniendo ciudades: $e');
    } finally {
      isLoading = false;
      notifyListeners();
    }
  }
}