import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:generp/Models/crmModels/GetSegmentOnTeamResponse.dart';
import 'package:generp/Models/crmModels/GetSourceOnReferenceResponse.dart';
import 'package:generp/Models/crmModels/LeadListViewResponse.dart';
import 'package:generp/Models/crmModels/SubmitLeadListFilterResponse.dart';
import 'package:provider/provider.dart';

import '../../Models/crmModels/GetDistrictOnStateResponse.dart';
import '../../Models/crmModels/GetSubLocOnDistrictResponse.dart';
import '../../Models/crmModels/LeadListContactPopUpResponse.dart' show Contacts;
import '../../services/api_calling.dart';
import '../HomeScreenNotifier.dart';

class Leadlistprovider extends ChangeNotifier {
  TextEditingController sLeadIDController = TextEditingController();
  TextEditingController mobileNumberController = TextEditingController();
  TextEditingController companyNameController = TextEditingController();

  bool _isLoading = true;

  List<Sources> _sourcesList = [];
  List<Teams> _teamsList = [];
  List<States> _statesList = [];
  List<Employees> _employeesList = [];
  List<References> _referencesList = [];
  List<Segments> _segmentsList = [];
  List<Districts> _districtsList = [];
  List<SubLocations> _subLocationsList = [];
  List<Contacts> _contactsList = [];
  List<LeadList> _crmLeadList = [];
  List<String?> _leadStatusList = [];
  List<String?> _openStatusList = [];
  List<String?> _alphabetList = [];

  Sources? _selectedSources;
  Teams? _selectedTeams;
  States? _selectedStates;
  Employees? _selectedEmployees;
  References? _selectedReferences;
  Segments? _selectedSegments;
  Districts? _selectedDistricts;
  SubLocations? _selectedSubLocations;
  Contacts? _selectedContacts;
  String? _selectedLeadStatus;
  String? _selectedOpenStatus;
  String? _selectedAlphabet;

  String? _selectedSourceId;
  String? _selectedSourceValue;

  String? _selectedTeamId;
  String? _selectedTeamValue;

  String? _selectedStateId;
  String? _selectedStateValue;

  String? _selectedEmployeeId;
  String? _selectedEmployeeValue;

  String? _selectedReferenceId;
  String? _selectedReferenceValue;

  String? _selectedSegmentId;
  String? _selectedSegmentValue;

  String? _selectedDistrictId;
  String? _selectedDistrictValue;

  String? _selectedSubLocationId;
  String? _selectedSubLocationValue;

  String? _selectedContactId;
  String? _selectedContactValue;

  bool get isLoading => _isLoading;

  List<Sources> get sourcesList => _sourcesList;
  List<Teams> get teamsList => _teamsList;
  List<States> get statesList => _statesList;
  List<Employees> get employeesList => _employeesList;
  List<References> get referencesList => _referencesList;
  List<Segments> get segmentsList => _segmentsList;
  List<Districts> get districtsList => _districtsList;
  List<SubLocations> get subLocationsList => _subLocationsList;
  List<Contacts> get contactsList => _contactsList;
  List<LeadList> get crmLeadList => _crmLeadList;
  List<String?> get leadStatusList => _leadStatusList;
  List<String?> get alphabetList => _alphabetList;
  List<String?> get openStatusList => _openStatusList;

  Sources? get selectedSource => _selectedSources;
  Teams? get selectedTeam => _selectedTeams;
  States? get selectedStates => _selectedStates;
  Employees? get selectedEmployee => _selectedEmployees;
  References? get selectedReference => _selectedReferences;
  Segments? get selectedSegment => _selectedSegments;
  Districts? get selectedDistricts => _selectedDistricts;
  SubLocations? get selectedSubLocations => _selectedSubLocations;
  Contacts? get selectedContacts => _selectedContacts;

  String? get selectedLeadStatus => _selectedLeadStatus;
  String? get selectedOpenStatus => _selectedOpenStatus;
  String? get selectedSourceId => _selectedSourceId;
  String? get selectedSourceValue => _selectedSourceValue;
  String? get selectedTeamId => _selectedTeamId;
  String? get selectedTeamValue => _selectedTeamValue;
  String? get selectedStateId => _selectedStateId;
  String? get selectedStateValue => _selectedStateValue;
  String? get selectedEmployeeId => _selectedEmployeeId;
  String? get selectedEmployeeValue => _selectedEmployeeValue;
  String? get selectedReferenceId => _selectedReferenceId;
  String? get selectedReferenceValue => _selectedReferenceValue;
  String? get selectedSegmentId => _selectedSegmentId;
  String? get selectedSegmentValue => _selectedSegmentValue;
  String? get selectedDistrictId => _selectedDistrictId;
  String? get selectedDistrictValue => _selectedDistrictValue;
  String? get selectedSubLocationId => _selectedSubLocationId;
  String? get selectedSubLocationValue => _selectedSubLocationValue;
  String? get selectedContactId => _selectedContactId;
  String? get selectedContactValue => _selectedContactValue;
  String? get selectedAlphabet => _selectedAlphabet;

  set isLoading(bool value) {
    _isLoading = value;
    notifyListeners();
  }

  set selectedAlphabet(String? value) {
    _selectedAlphabet = value;
    notifyListeners();
  }

  set selectedSource(Sources? value) {
    _selectedSources = value;
    _selectedSourceId = value?.id;
    _selectedSourceValue = value?.name;
    // debug - helpful when debugging filter problems
    debugPrint(
      'Setting selectedSource: id=$_selectedSourceId, name=$_selectedSourceValue',
    );
    notifyListeners();
  }

  set selectedTeam(Teams? value) {
    _selectedTeams = value;
    _selectedTeamId = value?.id;
    _selectedTeamValue = value?.name;
    notifyListeners();
  }

  set selectedStates(States? value) {
    _selectedStates = value;
    _selectedStateId = value?.id;
    _selectedStateValue = value?.name;
    notifyListeners();
  }

  set selectedEmployee(Employees? value) {
    _selectedEmployees = value;
    _selectedEmployeeId = value?.id;
    _selectedEmployeeValue = value?.name;
    notifyListeners();
  }

  set selectedReference(References? value) {
    _selectedReferences = value;
    _selectedReferenceId = value?.id;
    _selectedReferenceValue = value?.name;
    notifyListeners();
  }

  set selectedSegment(Segments? value) {
    _selectedSegments = value;
    _selectedSegmentId = value?.id;
    _selectedSegmentValue = value?.name;
    notifyListeners();
  }

  set selectedDistricts(Districts? value) {
    _selectedDistricts = value;
    _selectedDistrictId = value?.id;
    _selectedDistrictValue = value?.district;
    notifyListeners();
  }

  set selectedSubLocations(SubLocations? value) {
    _selectedSubLocations = value;
    _selectedSubLocationId = value?.id;
    _selectedSubLocationValue = value?.subLocality;
    notifyListeners();
  }

  set selectedContacts(Contacts? value) {
    _selectedContacts = value;
    _selectedContactId = value?.id;
    _selectedContactValue = value?.name;
    notifyListeners();
  }

  set selectedLeadStatus(String? value) {
    _selectedLeadStatus = value;
    notifyListeners();
  }

  set selectedOpenStatus(String? value) {
    _selectedOpenStatus = value;
    notifyListeners();
  }

  set selectedSourceId(String? value) {
    _selectedSourceId = value;
    notifyListeners();
  }

  set selectedSourceValue(String? value) {
    _selectedSourceValue = value;
    notifyListeners();
  }

  set selectedTeamId(String? value) {
    _selectedTeamId = value;
    notifyListeners();
  }

  set selectedTeamValue(String? value) {
    _selectedTeamValue = value;
    notifyListeners();
  }

  set selectedStateId(String? value) {
    _selectedStateId = value;
    notifyListeners();
  }

  set selectedStateValue(String? value) {
    _selectedStateValue = value;
    notifyListeners();
  }

  set selectedEmployeeId(String? value) {
    _selectedEmployeeId = value;
    notifyListeners();
  }

  set selectedEmployeeValue(String? value) {
    _selectedEmployeeValue = value;
    notifyListeners();
  }

  set selectedReferenceId(String? value) {
    _selectedReferenceId = value;
    notifyListeners();
  }

  set selectedReferenceValue(String? value) {
    _selectedReferenceValue = value;
    notifyListeners();
  }

  set selectedSegmentId(String? value) {
    _selectedSegmentId = value;
    notifyListeners();
  }

  set selectedSegmentValue(String? value) {
    _selectedSegmentValue = value;
    notifyListeners();
  }

  set selectedDistrictId(String? value) {
    _selectedDistrictId = value;
    notifyListeners();
  }

  set selectedDistrictValue(String? value) {
    _selectedDistrictValue = value;
    notifyListeners();
  }

  set selectedSubLocationId(String? value) {
    _selectedSubLocationId = value;
    notifyListeners();
  }

  set selectedSubLocationValue(String? value) {
    _selectedSubLocationValue = value;
    notifyListeners();
  }

  set selectedContactId(String? value) {
    _selectedContactId = value;
    notifyListeners();
  }

  set selectedContactValue(String? value) {
    _selectedContactValue = value;
    notifyListeners();
  }

  // ---------- fetches & rehydrate selection logic ----------

  // view API that returns many filter lists
  Future<void> crmLeadListViewAPIFunction(context, mode) async {
    try {
      var HomeProv = Provider.of<HomescreenNotifier>(context, listen: false);
      final data = await ApiCalling.crmLeadListViewAPI(
        HomeProv.empId,
        HomeProv.session,
        mode,
      );
      if (data != null) {
        debugPrint(
          'crmLeadListViewAPI error: ${data.error}, sources length: ${data.sources?.length ?? 0}',
        );
        if (data.error == "0") {
          _leadStatusList = [
            "all",
            "Hot",
            "Warm",
            "Cold",
            "Order Gain",
            "Order Lost",
          ];
          _alphabetList = List.generate(
            26,
                (index) => String.fromCharCode(index + 65),
          );
          _openStatusList = ["open", "Closed", "All"];
          _sourcesList = data.sources
              ?.where((source) => source.id != null && source.name != null)
              .toList() ??
              [];
          _teamsList = data.teams
              ?.where((team) => team.id != null && team.name != null)
              .toList() ??
              [];
          _statesList = data.states
              ?.where((state) => state.id != null && state.name != null)
              .toList() ??
              [];
          _employeesList = data.employees
              ?.where(
                (employee) => employee.id != null && employee.name != null,
          )
              .toList() ??
              [];

          // --- rehydrate previously selected items by matching IDs ---
          _rehydrateSelectionsAfterViewLoad();

          checkDropDownValues();
          // ensure loading flag set off
          _isLoading = false;
          notifyListeners();
        } else {
          // clear lists on non-zero error to avoid stale options
          _sourcesList.clear();
          _teamsList.clear();
          _statesList.clear();
          _employeesList.clear();
          _isLoading = false;
          notifyListeners();
        }
      } else {
        // null response -> clear lists
        _sourcesList.clear();
        _teamsList.clear();
        _statesList.clear();
        _employeesList.clear();
        _isLoading = false;
        notifyListeners();
      }
    } catch (e, s) {
      debugPrint('crmLeadListViewAPI error: $e, stack: $s');
      _sourcesList.clear();
      _teamsList.clear();
      _statesList.clear();
      _employeesList.clear();
      _isLoading = false;
      notifyListeners();
    }
  }

  Future<void> crmLeadListSourceOnReferenceAPIFunction(
      context,
      mode,
      String? sourceID,
      ) async {
    try {
      var prov = Provider.of<HomescreenNotifier>(context, listen: false);
      final data = await ApiCalling.crmLeadListSourceOnReferenceAPI(
        prov.empId,
        prov.session,
        sourceID,
      );
      if (data != null) {
        if (data.error == "0") {
          _referencesList = data.references
              ?.where((ref) => ref.id != null && ref.name != null)
              .toList() ??
              [];
          // rehydrate selectedReference if id exists
          if (_selectedReferenceId != null) {
            final found = _referencesList.firstWhere(
                  (r) => r.id == _selectedReferenceId,
              orElse: () => References(id: _selectedReferenceId, name: _selectedReferenceValue),
            );
            // if found in list use that instance else leave existing selectedReference null/unchanged
            if (_referencesList.any((r) => r.id == _selectedReferenceId)) {
              _selectedReferences = found;
            } else {
              // if API returned different list, keep selectedReference null to avoid mismatch
              _selectedReferences = null;
              _selectedReferenceId = null;
              _selectedReferenceValue = null;
            }
          }
          notifyListeners();
        } else {
          _referencesList.clear();
          _selectedReferences = null;
          _selectedReferenceId = null;
          _selectedReferenceValue = null;
          notifyListeners();
        }
      } else {
        _referencesList.clear();
        _selectedReferences = null;
        _selectedReferenceId = null;
        _selectedReferenceValue = null;
        notifyListeners();
      }
    } catch (e, s) {
      debugPrint('crmLeadListSourceOnReferenceAPI error: $e, stack: $s');
    }
  }

  Future<void> crmLeadListSegmentOnTeamAPIFunction(
      context,
      mode,
      String? teamID,
      ) async {
    try {
      var prov = Provider.of<HomescreenNotifier>(context, listen: false);
      final data = await ApiCalling.crmLeadListSegmentOnTeamAPI(
        prov.empId,
        prov.session,
        teamID,
      );
      if (data != null) {
        if (data.error == "0") {
          _segmentsList = data.segments
              ?.where(
                (segment) => segment.id != null && segment.name != null,
          )
              .toList() ??
              [];
          // rehydrate selectedSegment if id exists
          if (_selectedSegmentId != null) {
            final found = _segmentsList.firstWhere(
                  (s) => s.id == _selectedSegmentId,
              orElse: () => Segments(id: _selectedSegmentId, name: _selectedSegmentValue),
            );
            if (_segmentsList.any((s) => s.id == _selectedSegmentId)) {
              _selectedSegments = found;
            } else {
              _selectedSegments = null;
              _selectedSegmentId = null;
              _selectedSegmentValue = null;
            }
          }
          notifyListeners();
        } else {
          _segmentsList.clear();
          _selectedSegments = null;
          _selectedSegmentId = null;
          _selectedSegmentValue = null;
          notifyListeners();
        }
      } else {
        _segmentsList.clear();
        _selectedSegments = null;
        _selectedSegmentId = null;
        _selectedSegmentValue = null;
        notifyListeners();
      }
    } catch (e, s) {
      debugPrint('crmLeadListSegmentOnTeamAPI error: $e, stack: $s');
    }
  }

  Future<void> crmLeadListDistrictsOnStateAPIFunction(
      context,
      mode,
      String? stateID,
      ) async {
    try {
      var prov = Provider.of<HomescreenNotifier>(context, listen: false);
      final data = await ApiCalling.crmDistrictsOnStateAPI(
        prov.empId,
        prov.session,
        stateID,
      );
      if (data != null) {
        if (data.error == "0") {
          _districtsList = data.districts
              ?.where(
                (district) =>
            district.id != null && district.district != null,
          )
              .toList() ??
              [];
          // rehydrate selection
          if (_selectedDistrictId != null) {
            final found = _districtsList.firstWhere(
                  (d) => d.id == _selectedDistrictId,
              orElse: () => Districts(id: _selectedDistrictId, district: _selectedDistrictValue),
            );
            if (_districtsList.any((d) => d.id == _selectedDistrictId)) {
              _selectedDistricts = found;
            } else {
              _selectedDistricts = null;
              _selectedDistrictId = null;
              _selectedDistrictValue = null;
            }
          }
          notifyListeners();
        } else {
          _districtsList.clear();
          _selectedDistricts = null;
          _selectedDistrictId = null;
          _selectedDistrictValue = null;
          notifyListeners();
        }
      } else {
        _districtsList.clear();
        _selectedDistricts = null;
        _selectedDistrictId = null;
        _selectedDistrictValue = null;
        notifyListeners();
      }
    } catch (e, s) {
      debugPrint('crmLeadListDistrictsOnStateAPI error: $e, stack: $s');
    }
  }

  Future<void> crmLeadListSubLocOnDistrictAPIFunction(
      context,
      mode,
      String? districtID,
      ) async {
    try {
      var prov = Provider.of<HomescreenNotifier>(context, listen: false);
      final data = await ApiCalling.crmSubLocOnDistrictAPI(
        prov.empId,
        prov.session,
        districtID,
      );
      if (data != null) {
        if (data.error == "0") {
          _subLocationsList = data.subLocations
              ?.where(
                (subLoc) => subLoc.id != null && subLoc.subLocality != null,
          )
              .toList() ??
              [];
          // rehydrate selection
          if (_selectedSubLocationId != null) {
            final found = _subLocationsList.firstWhere(
                  (s) => s.id == _selectedSubLocationId,
              orElse: () => SubLocations(id: _selectedSubLocationId, subLocality: _selectedSubLocationValue),
            );
            if (_subLocationsList.any((s) => s.id == _selectedSubLocationId)) {
              _selectedSubLocations = found;
            } else {
              _selectedSubLocations = null;
              _selectedSubLocationId = null;
              _selectedSubLocationValue = null;
            }
          }
          notifyListeners();
        } else {
          _subLocationsList.clear();
          _selectedSubLocations = null;
          _selectedSubLocationId = null;
          _selectedSubLocationValue = null;
          notifyListeners();
        }
      } else {
        _subLocationsList.clear();
        _selectedSubLocations = null;
        _selectedSubLocationId = null;
        _selectedSubLocationValue = null;
        notifyListeners();
      }
    } catch (e, s) {
      debugPrint('crmLeadListSubLocOnDistrictAPI error: $e, stack: $s');
    }
  }

  Future<void> crmLeadListContactPopUpAPIFunction(
      context,
      mode,
      String? accountID,
      ) async {
    try {
      var prov = Provider.of<HomescreenNotifier>(context, listen: false);
      final data = await ApiCalling.crmLeadListContactPopUpAPI(
        prov.empId,
        prov.session,
        accountID,
      );
      if (data != null) {
        if (data.error == "0") {
          _contactsList = data.contacts
              ?.where(
                (contact) => contact.id != null && contact.name != null,
          )
              .toList() ??
              [];
          notifyListeners();
        } else {
          _contactsList.clear();
          notifyListeners();
        }
      } else {
        _contactsList.clear();
        notifyListeners();
      }
    } catch (e, s) {
      debugPrint('crmLeadListContactPopUpAPI error: $e, stack: $s');
    }
  }

  bool _isLoadingMore = false;
  bool get isLoadingMore => _isLoadingMore;

  bool _hasMoreData = true;
  bool get hasMoreData => _hasMoreData;

  int _currentPage = 1;
  String? _errorMessage;
  String? get errorMessage => _errorMessage;

  /// Reset pagination
  void resetPagination() {
    _currentPage = 1;
    _hasMoreData = true;
    _crmLeadList.clear();
    notifyListeners();
  }

  Future<void> crmLeadListAPIFunction(
      BuildContext context,
      String? mode,
      String? leadStatus,
      String? openStatus,
      String? sourceID,
      String? referenceID,
      String? teamID,
      String? segmentID,
      String? alphabet, {
        bool append = false,
      }) async {
    try {
      var HomeProv = Provider.of<HomescreenNotifier>(context, listen: false);

      if (!append) {
        _isLoading = true;
        _errorMessage = null;
        notifyListeners();
      } else {
        _isLoadingMore = true;
        notifyListeners();
      }

      final data = await ApiCalling.crmLeadListFilterSubmitAPI(
        HomeProv.empId,
        HomeProv.session,
        mode,
        leadStatus,
        openStatus,
        mobileNumberController.text,
        companyNameController.text,
        sourceID,
        referenceID,
        teamID,
        segmentID,
        alphabet,
        _currentPage.toString(), //
      );
      debugPrint(
        'empId: ${HomeProv.empId}, session: ${HomeProv.session}, pageNumber: $_currentPage',
      );

      if (data != null) {
        if (data.error == "0") {
          debugPrint("Lead List Length ${data.leadList?.length ?? 0}");
          if (append) {
            _crmLeadList.addAll(data.leadList ?? []);
          } else {
            _crmLeadList = data.leadList ?? [];
          }

          if ((data.leadList?.length ?? 0) < 15) {
            _hasMoreData = false; // no more pages
          }
        } else if (data.error == "1") {
          if (!append) _errorMessage = "No leads found!";
          _hasMoreData = false;
        }
      } else {
        _hasMoreData = false;
      }
    } catch (e) {
      _errorMessage = "Error: $e";
    }

    _isLoading = false;
    _isLoadingMore = false;
    notifyListeners();
  }

  /// Load next page
  Future<void> loadMore(
      BuildContext context,
      String? mode,
      String? leadStatus,
      String? openStatus,
      String? sourceID,
      String? referenceID,
      String? teamID,
      String? segmentID,
      String? alphabet,
      ) async {
    if (_isLoadingMore || !_hasMoreData) return;
    _currentPage++;
    await crmLeadListAPIFunction(
      context,
      mode,
      leadStatus,
      openStatus,
      sourceID,
      referenceID,
      teamID,
      segmentID,
      alphabet,
      append: true,
    );
  }

  onChangedLeadId(String? value) {
    notifyListeners();
  }

  onChangedMobileNum(String? value) {
    notifyListeners();
  }

  onChangedCompanyName(String? value) {
    notifyListeners();
  }

  void resetForm() {
    _isLoading = false;
    sLeadIDController.clear();
    mobileNumberController.clear();
    companyNameController.clear();
    _selectedEmployees = null;
    _selectedSources = null;
    _selectedReferences = null;
    _selectedSegments = null;
    _selectedTeams = null;
    _selectedDistricts = null;
    _selectedStates = null;
    _selectedSubLocations = null;
    _selectedLeadStatus = null;
    _selectedOpenStatus = null;
    _selectedAlphabet = null;
    _selectedEmployeeId = null;
    _selectedSourceId = null;
    _selectedReferenceId = null;
    _selectedTeamId = null;
    _selectedSegmentId = null;
    _selectedStateId = null;
    _selectedDistrictId = null;
    _selectedSubLocationId = null;
    _selectedEmployeeValue = null;
    _selectedSourceValue = null;
    _selectedReferenceValue = null;
    _selectedTeamValue = null;
    _selectedSegmentValue = null;
    _selectedDistrictValue = null;
    _selectedStateValue = null;
    _selectedSubLocationValue = null;
    checkDropDownValues();
    notifyListeners();
  }

  void checkDropDownValues() {
    if (_selectedEmployees != null &&
        !_employeesList.contains(_selectedEmployees)) {
      _selectedEmployees = null;
      _selectedEmployeeId = null;
      _selectedEmployeeValue = null;
    }
    if (_selectedSources != null && !_sourcesList.contains(_selectedSources)) {
      _selectedSources = null;
      _selectedSourceId = null;
      _selectedSourceValue = null;
    }
    if (_selectedReferences != null &&
        !_referencesList.contains(_selectedReferences)) {
      _selectedReferences = null;
      _selectedReferenceId = null;
      _selectedReferenceValue = null;
    }
    if (_selectedSegments != null &&
        !_segmentsList.contains(_selectedSegments)) {
      _selectedSegments = null;
      _selectedSegmentId = null;
      _selectedSegmentValue = null;
    }
    if (_selectedTeams != null && !_teamsList.contains(_selectedTeams)) {
      _selectedTeams = null;
      _selectedTeamId = null;
      _selectedTeamValue = null;
    }
    if (_selectedDistricts != null &&
        !_districtsList.contains(_selectedDistricts)) {
      _selectedDistricts = null;
      _selectedDistrictId = null;
      _selectedDistrictValue = null;
    }
    if (_selectedStates != null && !_statesList.contains(_selectedStates)) {
      _selectedStates = null;
      _selectedStateId = null;
      _selectedStateValue = null;
    }
    if (_selectedSubLocations != null &&
        !_subLocationsList.contains(_selectedSubLocations)) {
      _selectedSubLocations = null;
      _selectedSubLocationId = null;
      _selectedSubLocationValue = null;
    }
    notifyListeners();
  }

  // --- helper to rehydrate selected instances by their IDs after lists are loaded ---
  // --- helper to rehydrate selected instances by their IDs after lists are loaded ---
  void _rehydrateSelectionsAfterViewLoad() {
    // sources
    if (_selectedSourceId != null) {
      final idx = _sourcesList.indexWhere((s) => s.id == _selectedSourceId);
      if (idx != -1) {
        _selectedSources = _sourcesList[idx];
      } else {
        _selectedSources = null;
        _selectedSourceId = null;
        _selectedSourceValue = null;
      }
    }

    // teams
    if (_selectedTeamId != null) {
      final idx = _teamsList.indexWhere((t) => t.id == _selectedTeamId);
      if (idx != -1) {
        _selectedTeams = _teamsList[idx];
      } else {
        _selectedTeams = null;
        _selectedTeamId = null;
        _selectedTeamValue = null;
      }
    }

    // employees
    if (_selectedEmployeeId != null) {
      final idx = _employeesList.indexWhere((e) => e.id == _selectedEmployeeId);
      if (idx != -1) {
        _selectedEmployees = _employeesList[idx];
      } else {
        _selectedEmployees = null;
        _selectedEmployeeId = null;
        _selectedEmployeeValue = null;
      }
    }

    // states
    if (_selectedStateId != null) {
      final idx = _statesList.indexWhere((st) => st.id == _selectedStateId);
      if (idx != -1) {
        _selectedStates = _statesList[idx];
      } else {
        _selectedStates = null;
        _selectedStateId = null;
        _selectedStateValue = null;
      }
    }

    // note: I only handled the lists you used earlier; if you need to rehydrate
    // other selections (district/segment/subLocation/reference etc.) add same pattern.
  }

}