import '../../../../core/network/api_client.dart';
import '../models/patient_search_item_model.dart';

class PatientSearchService {
  final ApiClient apiClient;

  PatientSearchService({ApiClient? client}) : apiClient = client ?? ApiClient();

  Future<List<PatientSearchItemModel>> searchPatients(String rawQuery, {int limit = 25}) async {
    final cleanQuery = rawQuery.trim();
    if (cleanQuery.isEmpty) return [];

    try {
      final words = cleanQuery.split(RegExp(r'\s+')).where((w) => w.isNotEmpty).toList();
      final queryParams = <String>[
        'limit=$limit',
        'sort=-id',
        'fields=id,nombre,apellido,cedula,telefono,edad,sexo,fec_ultcon,seguro,mot_cons',
      ];

      if (words.length == 1) {
        final w = Uri.encodeQueryComponent(words.first);
        queryParams.add('filter[_or][0][nombre][_icontains]=$w');
        queryParams.add('filter[_or][1][apellido][_icontains]=$w');
        queryParams.add('filter[_or][2][cedula][_icontains]=$w');
        queryParams.add('filter[_or][3][telefono][_icontains]=$w');
        if (int.tryParse(words.first) != null) {
          queryParams.add('filter[_or][4][id][_eq]=${words.first}');
        }
      } else {
        for (var i = 0; i < words.length; i++) {
          final w = Uri.encodeQueryComponent(words[i]);
          queryParams.add('filter[_and][$i][_or][0][nombre][_icontains]=$w');
          queryParams.add('filter[_and][$i][_or][1][apellido][_icontains]=$w');
        }
      }

      final url = '/items/pacientes?${queryParams.join('&')}';
      final response = await apiClient.dio.get(url);

      if (response.statusCode == 200 && response.data != null) {
        final data = response.data['data'] as List<dynamic>? ?? [];
        return data
            .map((item) => PatientSearchItemModel.fromJson(item as Map<String, dynamic>))
            .toList();
      }
      return [];
    } catch (e) {
      throw Exception('Error al consultar pacientes en Directus: $e');
    }
  }
}