// transit_admin_service.dart — طبقة الاتصال بـ backend/Admin/transit (لوحة إدارة سيرو)
import '../functions/crud.dart';
import '../../constant/links.dart';
import 'transit_admin_models.dart';

class TransitApiResult<T> {
  final bool success;
  final T? data;
  final String message;
  TransitApiResult(this.success, this.data, this.message);
}

class TransitAdminService {
  static String get _base => '${AppLink.server}/Admin/transit';

  static String _errMsg(dynamic res) {
    if (res == 'no_internet') return 'تحقق من اتصالك بالإنترنت';
    if (res == 'token_expired') return 'انتهت الجلسة، حاول مجدداً';
    if (res is Map && res['message'] is String) return res['message'];
    return 'حدث خطأ، حاول مجدداً';
  }

  static Future<TransitApiResult<List<TransitOrgSummary>>> listOrgs({
    String? country,
    String? type,
    String? contractStatus,
    String? search,
  }) async {
    final payload = <String, dynamic>{};
    if (country != null && country.isNotEmpty) payload['country'] = country;
    if (type != null && type.isNotEmpty) payload['type'] = type;
    if (contractStatus != null && contractStatus.isNotEmpty) {
      payload['contract_status'] = contractStatus;
    }
    if (search != null && search.isNotEmpty) payload['search'] = search;

    final res = await CRUD().post(link: '$_base/org/list.php', payload: payload);

    if (res is Map && res['status'] == 'success' && res['message'] is Map) {
      final msg = res['message'] as Map;
      final list = (msg['orgs'] is List)
          ? (msg['orgs'] as List)
              .map((o) => TransitOrgSummary.fromJson(Map<String, dynamic>.from(o)))
              .toList()
          : <TransitOrgSummary>[];
      return TransitApiResult(true, list, 'ok');
    }
    return TransitApiResult(false, null, _errMsg(res));
  }

  static Future<TransitApiResult<TransitOrgDetails>> getOrgDetails(int orgId) async {
    final res = await CRUD().post(
      link: '$_base/org/details.php',
      payload: {'org_id': orgId.toString()},
    );
    if (res is Map && res['status'] == 'success' && res['message'] is Map) {
      return TransitApiResult(
          true, TransitOrgDetails.fromJson(Map<String, dynamic>.from(res['message'])), 'ok');
    }
    return TransitApiResult(false, null, _errMsg(res));
  }

  static Future<TransitApiResult<Map<String, dynamic>>> createOrg({
    required String type,
    required String country,
    required String city,
    required String nameAr,
    required String nameEn,
    required String adminName,
    required String adminPhone,
    String? contactPhone,
    String? contactEmail,
    String? website,
  }) async {
    final res = await CRUD().post(link: '$_base/org/create.php', payload: {
      'type': type,
      'country': country,
      'city': city,
      'name_ar': nameAr,
      'name_en': nameEn,
      'admin_name': adminName,
      'admin_phone': adminPhone,
      if (contactPhone != null) 'contact_phone': contactPhone,
      if (contactEmail != null) 'contact_email': contactEmail,
      if (website != null) 'website': website,
    });

    if (res is Map && res['status'] == 'success') {
      return TransitApiResult(true, Map<String, dynamic>.from(res['message'] ?? {}), 'ok');
    }
    return TransitApiResult(false, null, _errMsg(res));
  }

  // ── مشرفو المؤسسة ────────────────────────────────────────────

  static Future<TransitApiResult<List<Map<String, dynamic>>>> listOrgAdmins(
      int orgId) async {
    final res = await CRUD().post(
      link: '$_base/org/admins_list.php',
      payload: {'org_id': orgId.toString()},
    );
    if (res is Map && res['status'] == 'success' && res['message'] is Map) {
      final msg = res['message'] as Map;
      final list = (msg['admins'] is List)
          ? (msg['admins'] as List).map((a) => Map<String, dynamic>.from(a)).toList()
          : <Map<String, dynamic>>[];
      return TransitApiResult(true, list, 'ok');
    }
    return TransitApiResult(false, null, _errMsg(res));
  }

  static Future<TransitApiResult<void>> addOrgAdmin({
    required int orgId,
    required String name,
    required String phone,
    required String role,
  }) async {
    final res = await CRUD().post(link: '$_base/org/admin_add.php', payload: {
      'org_id': orgId.toString(),
      'name': name,
      'phone': phone,
      'role': role,
    });
    if (res is Map && res['status'] == 'success') return TransitApiResult(true, null, 'ok');
    return TransitApiResult(false, null, _errMsg(res));
  }

  static Future<TransitApiResult<void>> toggleOrgAdmin({
    required int adminId,
    required bool isActive,
  }) async {
    final res = await CRUD().post(link: '$_base/org/admin_toggle.php', payload: {
      'admin_id': adminId.toString(),
      'is_active': isActive ? '1' : '0',
    });
    if (res is Map && res['status'] == 'success') return TransitApiResult(true, null, 'ok');
    return TransitApiResult(false, null, _errMsg(res));
  }
}