import 'dart:convert';

import 'package:animated_tree_view/animated_tree_view.dart';
import 'package:animated_tree_view/tree_view/tree_node.dart';
import 'package:get/get.dart';
import 'package:starwork_flutter/api/model/team/request/create_new_depart_request.dart';
import 'package:starwork_flutter/api/model/team/request/get_depart_list_request.dart';
import 'package:starwork_flutter/api/model/team/response/depart_list_reponse.dart';
import 'package:starwork_flutter/api/model/user/response/user_info_response.dart';
import 'package:starwork_flutter/api/service/team_api_service.dart';
import 'package:starwork_flutter/base/app_logger.dart';
import 'package:starwork_flutter/base/base_controller.dart';
import 'package:starwork_flutter/common/constant/cache_keys.dart';
import 'package:starwork_flutter/common/utils/shared_preferences_utils.dart';

class PersonnelManageController extends BaseController {
  final teamApi = Get.find<TeamApiService>();
  final Rx<TreeNode?> treeData = Rx<TreeNode?>(null);
  TreeViewController? treeViewController;
  var selectedDepartItem = DepartItem().obs; // 当前选中的组织
  var cacheUserInfo = UserInfoResponse().obs; // 缓存的登录用户信息
  final RxInt totalPersonCount = 0.obs;

  @override
  void onReady() {
    super.onReady();
    requestDepartList();
    getCacheUserInfo();
  }

  requestDepartList() async {
    var response = await teamApi.requestDepartList(
      request: GetDepartListRequest(departNo: ''),
    );
    if (response.isSuccess) {
      // 转换数据为树形结构
      final tree = _convertToTree(response.data!.departList ?? []);
      treeData.value = tree;

      treeData.refresh();
      // 统计总人数
      totalPersonCount.value = _calculateTotalPersonCount(response.data!.departList ?? []);

      treeViewController?.expandAllChildren(treeData.value ?? TreeNode.root());
    }
  }

  // 计算总人数
  int _calculateTotalPersonCount(List<DepartItem> departList) {
    int total = 0;
    for (final depart in departList) {
      total += depart.personNum ?? 0;
    }
    return total;
  }

  TreeNode _convertToTree(List<DepartItem> departList) {
    // 创建根节点
    final root = TreeNode.root();

    // 如果列表为空，直接返回根节点
    if (departList.isEmpty) {
      return root;
    }

    // 创建一个映射来存储所有部门节点，方便查找
    final Map<int, TreeNode> departNodeMap = {};

    // 先创建所有部门节点
    for (final depart in departList) {
      final node = TreeNode(
        key: depart.id.toString(),
        data: depart,
      );
      departNodeMap[depart.id!] = node;
    }

    // 建立部门间的父子关系
    for (final depart in departList) {
      final currentNode = departNodeMap[depart.id];
      if (currentNode == null) continue;

      // 建立部门间的父子关系
      if (depart.parentId == -1) {
        // 顶级部门添加到根节点下
        root.add(currentNode);
      } else {
        // 子部门添加到对应父部门下
        final parentNode = departNodeMap[depart.parentId];
        parentNode?.add(currentNode);
      }
    }

    // 将人员节点添加到对应的部门节点下（在所有部门结构建立完成后再添加）
    for (final depart in departList) {
      final currentNode = departNodeMap[depart.id];
      if (currentNode == null) continue;

      // 将该部门下的所有人员作为子节点添加
      if (depart.persons != null && depart.persons!.isNotEmpty) {
        // 对人员按某种规则排序（例如按姓名或ID）
        final sortedPersons = List<PersonItem>.from(depart.persons!);
        // 这里可以根据需要添加排序逻辑，例如按姓名排序：
        // sortedPersons.sort((a, b) => (a.personName ?? '').compareTo(b.personName ?? ''));

        for (final person in sortedPersons) {
          final personNode = TreeNode(
            key: 'person_${person.id}',
            data: person,
          );
          currentNode.add(personNode);
        }
      }
    }

    return root;
  }



  void getCacheUserInfo() async {
    String? cachedJson = await SharedPreferencesUtils.getString(CacheKeys.userAccountInfo);
    if (cachedJson != null) {
      try {
        Map<String, dynamic> jsonMap = jsonDecode(cachedJson);
        UserInfoResponse userInfoResponse = UserInfoResponse.fromJson(jsonMap);
        cacheUserInfo.value = userInfoResponse;
        cacheUserInfo.refresh();
      } catch (e) {
        AppLogger.error('JSON 解析错误: $e');
      }
    }
  }
}