dating_touchme_app/lib/controller/discover/visitor_controller.dart

// controllers/visitor_controller.dart
import 'package:easy_refresh/easy_refresh.dart';
import 'package:get/get.dart';
import '../../model/home/marriage_data.dart';
import '../../network/user_api.dart';

class VisitorController extends GetxController {
  // 访客列表
  var visitors = <MarriageData>[].obs;

  // Refresh controllers
  final EasyRefreshController refreshController = EasyRefreshController(
    controlFinishRefresh: true,
    controlFinishLoad: true,
  );

  // 分页参数
  var currentPage = 1.obs;
  final int pageSize = 15;
  var hasMore = true.obs;
  var isLoading = false.obs;
  late final UserApi _userApi;

  @override
  void onInit() {
    super.onInit();
    _userApi = Get.find<UserApi>();
    loadInitialData();
  }

  // 加载初始数据
  void loadInitialData() async {
    isLoading.value = true;
    final result = await _fetchVisitorData(pageNum: currentPage.value);
    visitors.assignAll(result['records']);
    isLoading.value = false;

    final int current = result['current'] ?? 1;
    final int total = result['pages'] ?? 1;
    hasMore.value = current < total;
  }

  // 下拉刷新
  void onRefresh() async {
    hasMore.value = true;

    final result = await _fetchVisitorData(pageNum: currentPage.value);

    visitors.clear();
    visitors.addAll(result['records']);

    final int current = result['current'] ?? 1;
    final int total = result['pages'] ?? 1;
    hasMore.value = current < total;
    refreshController.finishRefresh();
    refreshController.resetFooter();
  }

  // 上拉加载更多
  void onLoadMore() async {
    print('onLoadMore');
    if (!hasMore.value) {
      return;
    }
    final result = await _fetchVisitorData(pageNum: currentPage.value + 1);
    currentPage.value++;
    final int current = result['current'] as int;
    final int total = result['pages'] as int;
    hasMore.value = current < total;
    visitors.addAll(result['records']);
    if (hasMore.value) {
      refreshController.finishLoad(IndicatorResult.success);
    } else {
      refreshController.finishLoad(IndicatorResult.noMore);
    }
  }

  // 删除访客
  void deleteVisitor(String visitorId) {
    // visitors.removeWhere((visitor) => visitor.id == visitorId);
    Get.snackbar('成功', '已删除访客记录');
  }

  // 获取今日访客数量
  int get todayVisitorsCount {
    return visitors.length;
  }

  // 获取在线访客数量
  int get onlineVisitorsCount {
    return visitors.length;
  }

  Future<Map<String, dynamic>> _fetchVisitorData({required int pageNum}) async {
    try {
      print('_fetchVisitorData - pageNum: $pageNum, pageSize: $pageSize');
      // 调用API获取数据
      var response = await _userApi.getVisitorList(
        pageNum: pageNum,
        pageSize: pageSize,
      );

      if (response.data.isSuccess) {
        final paginatedData = response.data.data;

        // 检查data是否为空
        if (paginatedData == null) {
          return {
            'records': <MarriageData>[],
            'current': pageNum,
            'pages': 1,
            'total': 0,
            'size': pageSize,
          };
        }

        // data 是 PaginatedResponse<dynamic>，直接使用其属性
        // records 中的每个项是 dynamic，需要转换为 MarriageData
        final records = paginatedData.records
            .map((item) => MarriageData.fromJson(item as Map<String, dynamic>))
            .toList();
        return {
          'records': records,
          'current': paginatedData.current,
          'pages': paginatedData.pages,
          'total': paginatedData.total,
          'size': paginatedData.size,
        };
      } else {
        // 响应失败，抛出异常
        throw Exception(response.data.message);
      }
    } catch (e) {
      // 向上抛出异常，让调用方处理
      rethrow;
    }
  }

  @override
  void onClose() {
    refreshController.dispose();
    super.onClose();
  }
}