hmg-mohemm-flutter-app/lib/api/offers_and_discounts_api_client.dart

import 'dart:async';
import 'dart:convert';
import 'dart:developer';

import 'package:flutter/material.dart';
import 'package:geolocator/geolocator.dart';
import 'package:mohem_flutter_app/api/api_client.dart';
import 'package:mohem_flutter_app/app_state/app_state.dart';
import 'package:mohem_flutter_app/classes/consts.dart';
import 'package:mohem_flutter_app/models/generic_response_model.dart';
import 'package:mohem_flutter_app/models/offers_and_discounts/get_categories_list.dart';
import 'package:mohem_flutter_app/models/offers_and_discounts/get_offers_list.dart';
import 'package:mohem_flutter_app/models/offers_and_discounts/wala_plus_category_model.dart';
import 'package:mohem_flutter_app/models/offers_and_discounts/wala_plus_retailer_model.dart';
import 'package:mohem_flutter_app/widgets/location/Location.dart' as location;

class OffersAndDiscountsApiClient {
  static final OffersAndDiscountsApiClient _instance =
      OffersAndDiscountsApiClient._internal();
  static List<WalaPlusCategoryModel>? cachedCategories;

  OffersAndDiscountsApiClient._internal();

  factory OffersAndDiscountsApiClient() => _instance;

  Future<List<GetCategoriesList>> getSaleCategories() async {
    List<GetCategoriesList> getSaleCategoriesList = [];

    String url = "${ApiConsts.cocRest}Mohemm_ITG_GetCategories";
    Map<String, dynamic> postParams = {
      "EmployeeNumber": AppState().memberInformationList?.eMPLOYEENUMBER,
      "ItgPageSize": 100,
      "ItgPageNo": 1,
      "ItgIsActive": true,
    };

    postParams.addAll(AppState().postParamsJson);
    return await ApiClient().postJsonForObject(
      (response) {
        var body = json.decode(response['Mohemm_ITG_ResponseItem']);

        GetCategoriesList getSaleCategoriesListObj = GetCategoriesList();
        getSaleCategoriesListObj.id = 0;
        getSaleCategoriesListObj.categoryNameEn = "All";
        getSaleCategoriesListObj.categoryNameAr = "الجميع";
        getSaleCategoriesListObj.isActive = true;
        getSaleCategoriesListObj.content =
            '<svg xmlns="http://www.w3.org/2000/svg" width="26.213" height="26.213" viewBox="0 0 26.213 26.213"> <g id="More_Select" data-name="More Select" transform="translate(-1 -1)"> <path id="Path_4860" data-name="Path 4860" d="M26.844,1H5.874A.874.874,0,0,0,5,1.874v.874H23.349A2.621,2.621,0,0,1,25.97,5.369V23.718h.874a.874.874,0,0,0,.874-.874V1.874A.874.874,0,0,0,26.844,1Z" transform="translate(-0.505)" fill="#2bb8a6"/> <path id="Path_4861" data-name="Path 4861" d="M22.844,5H1.874A.874.874,0,0,0,1,5.874v20.97a.874.874,0,0,0,.874.874h20.97a.874.874,0,0,0,.874-.874V5.874A.874.874,0,0,0,22.844,5ZM18.7,13.164,11.07,20.789a.874.874,0,0,1-1.236,0L6.022,16.977a.874.874,0,1,1,1.236-1.236l3.2,3.195,7.008-7.007A.874.874,0,1,1,18.7,13.165Z" transform="translate(0 -0.505)" fill="#125765"/> </g> </svg>';

        getSaleCategoriesList.add(getSaleCategoriesListObj);

        body['result']['data'].forEach((v) {
          getSaleCategoriesList.add(GetCategoriesList.fromJson(v));
        });
        return getSaleCategoriesList;
      },
      url,
      postParams,
    );
  }

  Future<List<OffersListModel>> getOffersList(
    int categoryID,
    int pageSize,
  ) async {
    List<OffersListModel> getSaleCategoriesList = [];

    String url = "${ApiConsts.cocRest}GetOfferDiscountsConfigData";
    Map<String, dynamic> postParams = {
      "EmployeeNumber": AppState().memberInformationList?.eMPLOYEENUMBER,
      "ItgPageSize": pageSize,
      "ItgPageNo": 1,
      "ItgCategoryID": categoryID,
    };

    postParams.addAll(AppState().postParamsJson);
    return await ApiClient().postJsonForObject(
      (response) {
        var body = json.decode(response['Mohemm_ITG_ResponseItem']);

        var bodyData = body['result']['data'];

        if (bodyData != null) {
          bodyData.forEach((v) {
            getSaleCategoriesList.add(OffersListModel.fromJson(v));
          });
        }
        return getSaleCategoriesList;
      },
      url,
      postParams,
    );
  }

  String _resolveUserName() {
    String? pUserName = AppState().getUserName;
    if (pUserName == null || pUserName.isEmpty) {
      pUserName =
          AppState().postParamsObject?.userName ??
          AppState().postParamsObject?.pUserName ??
          AppState().memberInformationList?.eMPLOYEENUMBER;
    }
    return pUserName ?? "";
  }

  // Same Location.isEnabled -> Location.havePermission -> Location.getCurrentLocation pattern
  // used by mark_attendance_widget.dart (e.g. Wifi attendance), wrapped as a Future since this
  // is a background enrichment of the request, not a blocking user action - any failure (service
  // disabled, permission denied, error) just resolves to null so the retailer fetch still proceeds
  // without WP_Geo_Location rather than showing permission dialogs here.
  Future<Position?> _getCurrentPositionSilently(BuildContext context) async {
    Completer<bool> enabledCompleter = Completer<bool>();
    location.Location.isEnabled((bool isEnabled) {
      if (!enabledCompleter.isCompleted) enabledCompleter.complete(isEnabled);
    });
    bool isEnabled = await enabledCompleter.future;
    debugPrint(
      "_getCurrentPositionSilently: location service isEnabled=$isEnabled",
    );
    if (!isEnabled) return null;

    Completer<bool> permissionCompleter = Completer<bool>();
    location.Location.havePermission((bool hasPermission) {
      if (!permissionCompleter.isCompleted)
        permissionCompleter.complete(hasPermission);
    });
    bool hasPermission = await permissionCompleter.future;
    debugPrint("_getCurrentPositionSilently: havePermission=$hasPermission");
    if (!hasPermission) return null;

    Completer<Position?> positionCompleter = Completer<Position?>();
    location.Location.getCurrentLocation(
      (Position position, bool isMocked) {
        debugPrint(
          "_getCurrentPositionSilently: got position lat=${position.latitude}, lng=${position.longitude}, isMocked=$isMocked",
        );
        if (!positionCompleter.isCompleted)
          positionCompleter.complete(position);
      },
      () {
        debugPrint(
          "_getCurrentPositionSilently: getCurrentLocation error callback fired",
        );
        if (!positionCompleter.isCompleted) positionCompleter.complete(null);
      },
      context,
    );
    return positionCompleter.future;
  }

  String _resolveDepNationalId() {
    if (!ApiConsts.isDependetLogin) {
      return "";
    }
    return AppState().getUserName ?? "";
  }

  String _resolveMobileNumber({String? overrideMobile}) {
    if (overrideMobile != null && overrideMobile.trim().isNotEmpty) {
      return overrideMobile.trim();
    }

    // postParamsObject.mobileNumber/memberInformationList/memberLoginList are only ever set by
    // the employee login flow and never cleared on logout - for a dependent session, the only
    // legitimate source is the sponsor's mobile captured at dependent login (walaplusDepInfoModel),
    // same reasoning as _resolveUserReference above.
    if (ApiConsts.isDependetLogin) {
      String? depMobile = AppState().walaplusDepInfoModel?.pEmpMobileNumber;
      if (depMobile != null && depMobile.trim().isNotEmpty) {
        return depMobile.trim();
      }
      return "";
    }

    String? mobile = AppState().postParamsObject?.mobileNumber;
    if (mobile != null && mobile.trim().isNotEmpty) {
      return mobile.trim();
    }
    mobile = AppState().memberInformationList?.eMPLOYEEMOBILENUMBER;
    if (mobile != null && mobile.trim().isNotEmpty) {
      return mobile.trim();
    }
    mobile = AppState().walaplusDepInfoModel?.pEmpMobileNumber;
    if (mobile != null && mobile.trim().isNotEmpty) {
      return mobile.trim();
    }
    mobile = AppState().memberLoginList?.pMOBILENUMBER;
    if (mobile != null && mobile.trim().isNotEmpty) {
      return mobile.trim();
    }
    mobile = AppState().memberInformationList?.mobileNumberWithZipCode;
    if (mobile != null && mobile.trim().isNotEmpty) {
      return mobile.trim();
    }
    return "";
  }

  Map<String, dynamic> _getBaseWalaPlusParams() {
    Map<String, dynamic> base = {};
    base.addAll(AppState().postParamsJson);
    if (ApiConsts.isDependetLogin) {
      String? token =
          AppState().postParamsObject?.tokenID ??
          AppState().authenticationTokenID;
      if (token != null && token.isNotEmpty) {
        base["TokenID"] = token;
      }
      String? logInToken = AppState().postParamsObject?.logInTokenID;
      if (logInToken != null && logInToken.isNotEmpty) {
        base["LogInTokenID"] = logInToken;
      }
    }
    _cleanWalaPlusParams(base);
    return base;
  }

  void _cleanWalaPlusParams(Map<String, dynamic> map) {
    map.remove("P_EMAIL_ADDRESS");
    map.remove("P_SESSION_ID");
    map.remove("PayrollCodeStr");
    map.remove("LegislationCodeStr");
    map.remove("P_SELECTED_EMPLOYEE_NUMBER");
    map.removeWhere((key, value) => value == null);
  }

  // Pass parentId to fetch the subcategories under a given main category (WP_ParentId) -
  // omit it (the default) to fetch the top-level main categories, same as before.
  Future<List<WalaPlusCategoryModel>> getWalaPlusCategories({
    BuildContext? context,
    String? mobileNumber,
    String? parentId,
  }) async {
    String url = ApiConsts.walaPlusCategories;
    String pUserName = _resolveUserName();
    String pMobileNumber = _resolveMobileNumber(overrideMobile: mobileNumber);
    String pDepNationalId = _resolveDepNationalId();

    Map<String, dynamic> postParams = _getBaseWalaPlusParams();
    postParams["UserName"] = pUserName;
    postParams["P_USER_NAME"] = pUserName;
    postParams["P_DEP_NATIONAL_ID"] = pDepNationalId;
    if (pMobileNumber.isNotEmpty) {
      postParams["MobileNumber"] = pMobileNumber;
    }
    postParams["MemberType"] = ApiConsts.isDependetLogin ? 2 : 1;
    postParams["CompanyID"] = 1;
    if (parentId != null && parentId.trim().isNotEmpty) {
      postParams["WP_Parent_Id"] = parentId.trim();
    }
    _cleanWalaPlusParams(postParams);

    List<WalaPlusCategoryModel> list = await ApiClient().postJsonForObject(
      (response) {
        List<WalaPlusCategoryModel> categories = [];
        if (response != null) {
          dynamic cats =
              response['WalaPlus_Categories'] ??
              response['walaPlus_Categories'] ??
              response['WalaPlusCategories'] ??
              response['result'];
          if (cats is String) {
            try {
              cats = json.decode(cats);
            } catch (e) {
              debugPrint("Error decoding WalaPlus_Categories: $e");
            }
          }
          if (cats is List) {
            cats.forEach((v) {
              if (v is Map<String, dynamic>) {
                categories.add(WalaPlusCategoryModel.fromJson(v));
              } else if (v is Map) {
                categories.add(
                  WalaPlusCategoryModel.fromJson(Map<String, dynamic>.from(v)),
                );
              }
            });
          }
        }
        return categories;
      },
      url,
      postParams,
    );
    if ((parentId == null || parentId.trim().isEmpty) && list.isNotEmpty) {
      cachedCategories = list;
    }
    return list;
  }

  // Confirmed with backend team: WP_Offer_Type accepts "online" and "store".
  static const String walaPlusOfferTypeOnline = "online";
  static const String walaPlusOfferTypeInStore = "store";

  // Maps the screen's internal filter key ("online"/"instore"/"all") to the WP_Offer_Type value
  // the backend expects. Returns null for "all" (or anything unrecognized) so callers can skip
  // sending WP_Offer_Type entirely.
  static String? mapOfferTypeFilter(String internalKey) {
    switch (internalKey) {
      case "online":
        return walaPlusOfferTypeOnline;
      case "instore":
        return walaPlusOfferTypeInStore;
      default:
        return null;
    }
  }

  Future<WalaPlusRetailersResponse?> getWalaPlusRetailers({
    String? categoryId,
    // Every existing caller passes categoryId (even "" for "all") and relies on WP_CategoryID
    // always being present in the request - default true preserves that for everyone. Pass
    // false only when the category filter must be fully omitted (e.g. a cross-category newest
    // feed), not just set to empty.
    bool includeCategoryId = true,
    int page = 1,
    int perPage = 10,
    String? geoLocation,
    String? offerType,
    String? sortBy,
    int? radius,
    int? minDiscount,
    BuildContext? context,
    String? mobileNumber,
    String? query,
    String? userReference,
  }) async {
    String url = ApiConsts.walaPlusRetailers;
    String pUserName = _resolveUserName();
    String pMobileNumber = _resolveMobileNumber(overrideMobile: mobileNumber);
    String pDepNationalId = _resolveDepNationalId();
    String effectiveCatId =
        (categoryId == "all" || categoryId == "0" || categoryId == null)
            ? ""
            : categoryId;

    Map<String, dynamic> postParams = _getBaseWalaPlusParams();
    postParams["UserName"] = pUserName;
    postParams["P_USER_NAME"] = pUserName;
    postParams["P_DEP_NATIONAL_ID"] = pDepNationalId;
    if (pMobileNumber.isNotEmpty) {
      postParams["MobileNumber"] = pMobileNumber;
    }
    postParams["MemberType"] = ApiConsts.isDependetLogin ? 2 : 1;
    postParams["CompanyID"] = 1;
    if (includeCategoryId) {
      postParams["WP_CategoryID"] = effectiveCatId;
    }
    if (offerType != null && offerType.trim().isNotEmpty) {
      postParams["WP_Offer_Type"] = offerType.trim();
    }
    postParams["WP_Page"] = page;
    postParams["WP_Per_page"] = perPage;
    if (query != null && query.trim().isNotEmpty) {
      postParams["WP_Query"] = query.trim();
    }
    if (sortBy != null && sortBy.trim().isNotEmpty) {
      postParams["WP_Sort_By"] = sortBy.trim();
    }
    // Backend contract declares these as non-nullable int DataMembers, so "Any"/"All" (null
    // here) must be sent as a concrete 0, not omitted.
    postParams["WP_Radius"] = radius ?? 0;
    postParams["WP_Min_Discount"] = minDiscount ?? 0;

    if (geoLocation != null && geoLocation.isNotEmpty) {
      postParams["WP_Geo_Location"] = geoLocation;
    } else if (context != null) {
      try {
        Position? position = await _getCurrentPositionSilently(context);
        if (position != null) {
          postParams["WP_Geo_Location"] =
              "${position.latitude},${position.longitude}";
        }
      } catch (e) {
        debugPrint("getWalaPlusRetailers: unable to get current location: $e");
      }
    }
    _cleanWalaPlusParams(postParams);

    // Pass WP_User_Reference: if filled then user ID, else null value
    if (userReference != null && userReference.trim().isNotEmpty) {
      postParams["WP_User_Reference"] = userReference.trim();
    } else {
      postParams["WP_User_Reference"] = null;
    }

    return await ApiClient().postJsonForObject(
      (response) {
        if (response != null) {
          dynamic val =
              response['WalaPlus_Retailers'] ??
              response['walaPlus_Retailers'] ??
              response['WalaPlusRetailers'] ??
              response['WP_Retailers'] ??
              response['result'];
          if (val is String) {
            try {
              val = json.decode(val);
            } catch (e) {
              debugPrint("Error decoding WalaPlus_Retailers: $e");
            }
          }
          if (val is Map<String, dynamic>) {
            return WalaPlusRetailersResponse.fromJson(val);
          } else if (val is Map) {
            return WalaPlusRetailersResponse.fromJson(
              Map<String, dynamic>.from(val),
            );
          } else if (val is List) {
            List<WalaPlusRetailerModel> retailers = [];
            for (var v in val) {
              if (v is Map<String, dynamic>) {
                retailers.add(WalaPlusRetailerModel.fromJson(v));
              } else if (v is Map) {
                retailers.add(
                  WalaPlusRetailerModel.fromJson(Map<String, dynamic>.from(v)),
                );
              }
            }
            return WalaPlusRetailersResponse(
              retailers: retailers,
              page: 1,
              pagesCount: 1,
              perPage: retailers.length,
            );
          }
        }
        return null;
      },
      url,
      postParams,
    );
  }

  Future<WalaPlusRetailerModel?> getWalaPlusRetailerById({
    required String retailerId,
    BuildContext? context,
    String? mobileNumber,
    String? userReference,
  }) async {
    String url = ApiConsts.walaPlusRetailersByID;
    String pUserName = _resolveUserName();
    String pMobileNumber = _resolveMobileNumber(overrideMobile: mobileNumber);
    String pDepNationalId = _resolveDepNationalId();
    String pUserReference = _resolveUserReference(
      overrideUserReference: userReference,
    );

    Map<String, dynamic> postParams = _getBaseWalaPlusParams();
    postParams["WP_RetailerID"] = retailerId;
    postParams["RetailerID"] = retailerId;
    postParams["UserName"] = pUserName;
    postParams["P_USER_NAME"] = pUserName;
    postParams["P_DEP_NATIONAL_ID"] = pDepNationalId;
    if (pMobileNumber.isNotEmpty) {
      postParams["MobileNumber"] = pMobileNumber;
    }
    postParams["MemberType"] = ApiConsts.isDependetLogin ? 2 : 1;
    postParams["CompanyID"] = 1;

    if (context != null) {
      postParams["LanguageID"] = AppState().getLanguageID(context);
      try {
        Position? position = await _getCurrentPositionSilently(context);
        log("context position: $position");

        if (position != null) {
          postParams["WP_Geo_Location"] =
              "${position.latitude},${position.longitude}";
        }
      } catch (e) {
        debugPrint(
          "getWalaPlusRetailerById: unable to get current location: $e",
        );
      }
    }

    _cleanWalaPlusParams(postParams);

    // Pass WP_User_Reference: if filled then user ID, else null value
    if (pUserReference.isNotEmpty) {
      postParams["WP_User_Reference"] = pUserReference;
    } else {
      postParams["WP_User_Reference"] = null;
    }

    debugPrint(
      "getWalaPlusRetailerById: calling $url with params: $postParams",
    );

    return await ApiClient().postJsonForObject(
      (response) {
        if (response != null) {
          debugPrint(
            "getWalaPlusRetailerById response keys: ${response is Map ? response.keys.toList() : 'non-map'}",
          );
          dynamic val =
              response['WalaPlus_RetailersByID'] ??
              response['walaPlus_RetailersByID'] ??
              response['WalaPlusRetailersByID'] ??
              response['WP_RetailersByID'] ??
              response['result'];
          if (val is String) {
            try {
              val = json.decode(val);
            } catch (e) {
              debugPrint(
                "Error decoding WalaPlus_RetailersByID JSON string: $e",
              );
            }
          }
          WalaPlusRetailerModel? model;
          if (val is List && val.isNotEmpty) {
            var item = val.first;
            if (item is Map<String, dynamic>) {
              model = WalaPlusRetailerModel.fromJson(item);
            } else if (item is Map) {
              model = WalaPlusRetailerModel.fromJson(
                Map<String, dynamic>.from(item),
              );
            }
          } else if (val is Map) {
            Map<String, dynamic> map =
                (val is Map<String, dynamic>)
                    ? val
                    : Map<String, dynamic>.from(val);
            if (map.containsKey('retailer')) {
              var byIdResponse = WalaPlusRetailersByIDResponse.fromJson(map);
              model =
                  byIdResponse.primaryRetailer ??
                  WalaPlusRetailerModel.fromJson(map);
            } else {
              model = WalaPlusRetailerModel.fromJson(map);
            }
            if (model?.isFavorite == null) {
              if (map.containsKey('isfavorite')) {
                model?.isFavorite =
                    map['isfavorite'] == true ||
                    map['isfavorite'] == 1 ||
                    map['isfavorite'] == 'true' ||
                    map['isfavorite'] == '1';
              } else if (map.containsKey('is_favorite')) {
                model?.isFavorite =
                    map['is_favorite'] == true ||
                    map['is_favorite'] == 1 ||
                    map['is_favorite'] == 'true' ||
                    map['is_favorite'] == '1';
              }
            }
            if ((model?.offers == null || model!.offers!.isEmpty) &&
                (map.containsKey('offers') || map.containsKey('Offers'))) {
              model?.offers = WalaPlusRetailerModel.parseOffersList(
                map['offers'] ?? map['Offers'],
              );
            }
            if ((model?.locations == null || model!.locations!.isEmpty) &&
                (map.containsKey('locations') ||
                    map.containsKey('Locations') ||
                    map.containsKey('location') ||
                    map.containsKey('Location'))) {
              model?.locations = WalaPlusRetailerModel.parseLocationsList(
                map['locations'] ??
                    map['Locations'] ??
                    map['location'] ??
                    map['Location'],
              );
            }
            if ((model?.website == null ||
                model!.website!.isEmpty ||
                model!.website == "null")) {
              String? web =
                  (map['website'] ??
                          map['merchant_website'] ??
                          map['website_url'] ??
                          map['url'] ??
                          map['merchant_url'])
                      ?.toString();
              if (web != null && web.trim().isNotEmpty && web != "null") {
                model?.website = web.trim();
              }
            }
            if ((model?.categories == null || model!.categories!.isEmpty) &&
                (map.containsKey('categories') ||
                    map.containsKey('Categories') ||
                    map.containsKey('category') ||
                    map.containsKey('Category'))) {
              dynamic catData =
                  map['categories'] ??
                  map['Categories'] ??
                  map['category'] ??
                  map['Category'];
              if (catData is List) {
                model?.categories =
                    catData
                        .map(
                          (c) =>
                              c is Map
                                  ? WalaPlusCategoryModel.fromJson(
                                    Map<String, dynamic>.from(c),
                                  )
                                  : WalaPlusCategoryModel(name: c.toString()),
                        )
                        .toList();
              } else if (catData is Map) {
                model?.categories = [
                  WalaPlusCategoryModel.fromJson(
                    Map<String, dynamic>.from(catData),
                  ),
                ];
              } else if (catData is String && catData.trim().isNotEmpty) {
                model?.categories = [
                  WalaPlusCategoryModel(name: catData.trim()),
                ];
              }
            }
          } else if (response is Map<String, dynamic> &&
              response.containsKey('name')) {
            model = WalaPlusRetailerModel.fromJson(response);
          }

          if (model != null) {
            if (response is Map) {
              if (model.isFavorite == null) {
                if (response.containsKey('isfavorite')) {
                  model.isFavorite =
                      response['isfavorite'] == true ||
                      response['isfavorite'] == 1 ||
                      response['isfavorite'] == 'true' ||
                      response['isfavorite'] == '1';
                } else if (response.containsKey('is_favorite')) {
                  model.isFavorite =
                      response['is_favorite'] == true ||
                      response['is_favorite'] == 1 ||
                      response['is_favorite'] == 'true' ||
                      response['is_favorite'] == '1';
                }
              }
              if (model.website == null ||
                  model.website!.isEmpty ||
                  model.website == "null") {
                String? web =
                    (response['website'] ??
                            response['merchant_website'] ??
                            response['website_url'] ??
                            response['url'] ??
                            response['merchant_url'])
                        ?.toString();
                if (web != null && web.trim().isNotEmpty && web != "null") {
                  model.website = web.trim();
                }
              }
              if ((model.offers == null || model.offers!.isEmpty) &&
                  (response.containsKey('offers') ||
                      response.containsKey('Offers'))) {
                model.offers = WalaPlusRetailerModel.parseOffersList(
                  response['offers'] ?? response['Offers'],
                );
              }
              if ((model.locations == null || model.locations!.isEmpty) &&
                  (response.containsKey('locations') ||
                      response.containsKey('Locations') ||
                      response.containsKey('location') ||
                      response.containsKey('Location'))) {
                model.locations = WalaPlusRetailerModel.parseLocationsList(
                  response['locations'] ??
                      response['Locations'] ??
                      response['location'] ??
                      response['Location'],
                );
              }
              if ((model.categories == null || model.categories!.isEmpty) &&
                  (response.containsKey('categories') ||
                      response.containsKey('Categories') ||
                      response.containsKey('category') ||
                      response.containsKey('Category'))) {
                dynamic catData =
                    response['categories'] ??
                    response['Categories'] ??
                    response['category'] ??
                    response['Category'];
                if (catData is List) {
                  model.categories =
                      catData
                          .map(
                            (c) =>
                                c is Map
                                    ? WalaPlusCategoryModel.fromJson(
                                      Map<String, dynamic>.from(c),
                                    )
                                    : WalaPlusCategoryModel(name: c.toString()),
                          )
                          .toList();
                } else if (catData is Map) {
                  model.categories = [
                    WalaPlusCategoryModel.fromJson(
                      Map<String, dynamic>.from(catData),
                    ),
                  ];
                } else if (catData is String && catData.trim().isNotEmpty) {
                  model.categories = [
                    WalaPlusCategoryModel(name: catData.trim()),
                  ];
                }
              }
            }
            debugPrint(
              "getWalaPlusRetailerById: parsed retailer '${model.name}', isFavorite: ${model.isFavorite}, offers: ${model.offers?.length ?? 0}, locations: ${model.locations?.length ?? 0}",
            );
            return model;
          }
        }
        return null;
      },
      url,
      postParams,
    );
  }

  String resolveUserReference({String? overrideUserReference}) {
    return _resolveUserReference(overrideUserReference: overrideUserReference);
  }

  String _resolveUserReference({String? overrideUserReference}) {
    if (overrideUserReference != null &&
        overrideUserReference.trim().isNotEmpty) {
      return overrideUserReference.trim();
    }

    // AppState().memberInformationList is never cleared on logout, so after logging out of an
    // employee session and logging back in as a dependent (without a full app restart) it can
    // still be sitting there from the previous session. Checking the CURRENT session type first
    // - rather than just whichever field happens to be non-empty - prevents a dependent session
    // from ever resolving to the previous employee's number.
    if (ApiConsts.isDependetLogin) {
      String? depRef = AppState().getUserName;
      if (depRef != null && depRef.trim().isNotEmpty) {
        return depRef.trim();
      }
      return "";
    }

    String? ref = AppState().memberInformationList?.eMPLOYEENUMBER?.toString();
    if (ref != null && ref.trim().isNotEmpty) {
      return ref.trim();
    }
    String? pUserName = AppState().getUserName;
    if (pUserName != null && pUserName.trim().isNotEmpty) {
      return pUserName.trim();
    }
    return "";
  }

  Future<Map<String, dynamic>?> redeemWalaPlusOffer({
    required String offerId,
    String? offerType,
    String? userReference,
    BuildContext? context,
  }) async {
    String url = ApiConsts.walaPlusOfferRedeem;
    String pUserName = _resolveUserName();
    String pUserReference = _resolveUserReference(
      overrideUserReference: userReference,
    );

    Map<String, dynamic> postParams = _getBaseWalaPlusParams();
    postParams["WP_User_Reference"] = pUserReference;
    postParams["WP_Offer_Id"] = offerId;
    postParams["WP_Offer_Type"] =
        (offerType != null && offerType.trim().isNotEmpty)
            ? offerType.trim()
            : "promo";
    postParams["UserName"] = pUserName;
    postParams["P_USER_NAME"] = pUserName;

    if (ApiConsts.isDependetLogin) {
      String pDepNationalId = _resolveDepNationalId();
      if (pDepNationalId.isNotEmpty) {
        postParams["P_DEP_NATIONAL_ID"] = pDepNationalId;
      }
      postParams["MemberType"] = 2;
    } else {
      postParams["P_DEP_NATIONAL_ID"] = "";
      postParams["MemberType"] = 1;
    }
    _cleanWalaPlusParams(postParams);

    debugPrint("redeemWalaPlusOffer calling $url with params: $postParams");

    return await ApiClient().postJsonForObject(
      (response) {
        if (response != null) {
          debugPrint("redeemWalaPlusOffer response: $response");
          dynamic val =
              response['WalaPlus_OfferRedeem'] ??
              response['walaPlus_OfferRedeem'] ??
              response['WalaPlusOfferRedeem'] ??
              response['result'];
          if (val is String) {
            try {
              val = json.decode(val);
            } catch (e) {
              debugPrint("Error decoding WalaPlus_OfferRedeem: $e");
            }
          }
          if (val is Map<String, dynamic>) {
            return val;
          } else if (val is Map) {
            return Map<String, dynamic>.from(val);
          }
        }
        return null;
      },
      url,
      postParams,
    );
  }

  Future<GenericResponseModel?> addWalaPlusFavorite({
    Object? retailerId,
    List<String>? retailerIds,
    BuildContext? context,
    String? mobileNumber,
    String? userReference,
  }) async {
    String url = ApiConsts.walaPlusFavoritesAdd;
    String pUserName = _resolveUserName();
    String pMobileNumber = _resolveMobileNumber(overrideMobile: mobileNumber);
    String pUserReference = _resolveUserReference(
      overrideUserReference: userReference,
    );

    List<String> ids = [];
    if (retailerIds != null && retailerIds.isNotEmpty) {
      ids.addAll(retailerIds);
    } else if (retailerId != null) {
      if (retailerId is List) {
        ids.addAll(retailerId.map((e) => e.toString()));
      } else {
        ids.add(retailerId.toString());
      }
    }

    Map<String, dynamic> postParams = _getBaseWalaPlusParams();
    postParams["P_USER_NAME"] = pUserName;
    postParams["UserName"] = pUserName;
    if (pMobileNumber.isNotEmpty) {
      postParams["MobileNumber"] = pMobileNumber;
    }
    if (pUserReference.isNotEmpty) {
      postParams["WP_User_Reference"] = pUserReference;
    }
    postParams["WP_Retailer_Ids"] = ids;

    if (context != null) {
      postParams["LanguageID"] = AppState().getLanguageID(context);
    }

    if (ApiConsts.isDependetLogin) {
      String pDepNationalId = _resolveDepNationalId();
      if (pDepNationalId.isNotEmpty) {
        postParams["P_DEP_NATIONAL_ID"] = pDepNationalId;
      }
      postParams["MemberType"] = 2;
    } else {
      postParams["MemberType"] = 1;
    }

    _cleanWalaPlusParams(postParams);

    debugPrint("addWalaPlusFavorite calling $url with params: $postParams");

    return await ApiClient().postJsonForObject(
      (response) {
        if (response != null) {
          debugPrint("addWalaPlusFavorite response: $response");
          return GenericResponseModel.fromJson(response);
        }
        return null;
      },
      url,
      postParams,
    );
  }

  Future<GenericResponseModel?> removeWalaPlusFavorite({
    Object? retailerId,
    List<String>? retailerIds,
    BuildContext? context,
    String? mobileNumber,
    String? userReference,
  }) async {
    String url = ApiConsts.walaPlusFavoritesRemove;
    String pUserName = _resolveUserName();
    String pMobileNumber = _resolveMobileNumber(overrideMobile: mobileNumber);
    String pUserReference = _resolveUserReference(
      overrideUserReference: userReference,
    );

    List<String> ids = [];
    if (retailerIds != null && retailerIds.isNotEmpty) {
      ids.addAll(retailerIds);
    } else if (retailerId != null) {
      if (retailerId is List) {
        ids.addAll(retailerId.map((e) => e.toString()));
      } else {
        ids.add(retailerId.toString());
      }
    }

    Map<String, dynamic> postParams = _getBaseWalaPlusParams();
    postParams["P_USER_NAME"] = pUserName;
    postParams["UserName"] = pUserName;
    if (pMobileNumber.isNotEmpty) {
      postParams["MobileNumber"] = pMobileNumber;
    }
    if (pUserReference.isNotEmpty) {
      postParams["WP_User_Reference"] = pUserReference;
    }
    postParams["WP_Retailer_Ids"] = ids;

    if (context != null) {
      postParams["LanguageID"] = AppState().getLanguageID(context);
    }

    if (ApiConsts.isDependetLogin) {
      String pDepNationalId = _resolveDepNationalId();
      if (pDepNationalId.isNotEmpty) {
        postParams["P_DEP_NATIONAL_ID"] = pDepNationalId;
      }
      postParams["MemberType"] = 2;
    } else {
      postParams["MemberType"] = 1;
    }

    _cleanWalaPlusParams(postParams);

    debugPrint("removeWalaPlusFavorite calling $url with params: $postParams");

    return await ApiClient().postJsonForObject(
      (response) {
        if (response != null) {
          debugPrint("removeWalaPlusFavorite response: $response");
          return GenericResponseModel.fromJson(response);
        }
        return null;
      },
      url,
      postParams,
    );
  }
}