import 'package:flutter/material.dart';
import 'package:prosapp_web_app/models/usuario_profesional.dart';
import 'package:prosapp_web_app/services/api_service.dart';

class ProfessionalsProvider extends ChangeNotifier {
  List<UsuarioProfesional> professionals = [];
  bool isLoading = true;
  bool _initialized = false;
  String? _currentUserId;
  String? _locationCity;
  double? _locationLat;
  double? _locationLng;
  String? _lastSearch;
  final _api = ApiService.instance;

  void updateCity(String? city, {String? userId}) {
    // Reset state when a different user logs in (prevents cross-user data leak)
    if (_currentUserId != userId) {
      _currentUserId = userId;
      _initialized = false;
      _locationCity = null;
      _locationLat = null;
      _locationLng = null;
      _lastSearch = null;
      professionals = [];
    }
    if (!_initialized) {
      _initialized = true;
      _locationCity = city;
      getProfessionals();
    }
  }

  void setLocationContext({required String? city, required double lat, required double lng}) {
    if (city != null && city.isNotEmpty) _locationCity = city;
    _locationLat = lat;
    _locationLng = lng;
    getProfessionals(search: _lastSearch);
  }

  Future<void> getProfessionals({String? search}) async {
    if (search != null) _lastSearch = search.trim().isEmpty ? null : search.trim();
    isLoading = true;
    notifyListeners();
    try {
      final params = <String, String>{};
      if (_lastSearch != null && _lastSearch!.isNotEmpty) params['search'] = _lastSearch!;
      if (_locationCity != null && _locationCity!.isNotEmpty) params['city'] = _locationCity!.trim();
      if (_locationLat != null) params['lat'] = _locationLat.toString();
      if (_locationLng != null) params['lng'] = _locationLng.toString();

      final query = params.isEmpty
          ? ''
          : '?${params.entries.map((e) => '${e.key}=${Uri.encodeComponent(e.value)}').join('&')}';
      final res = await _api.get('/professionals$query');
      final list = (res is Map ? res['data'] : res) as List;
      professionals = list
          .map((e) => UsuarioProfesional.fromDocument(e as Map<String, dynamic>))
          .toList();
    } catch (e) {
      print('Error obteniendo profesionales: $e');
    } finally {
      isLoading = false;
      notifyListeners();
    }
  }
}