282 lines
7.9 KiB
Dart
282 lines
7.9 KiB
Dart
import 'dart:convert';
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import 'dart:math';
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import 'package:ef/base/getx/getx.dart';
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import 'package:ef/ef.dart';
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import 'package:flutter/services.dart';
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import 'package:json_annotation/json_annotation.dart';
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import 'package:vbvs_app/controller/setting/language/language_controller.dart';
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import 'package:vbvs_app/language/AppLanguage.dart';
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part 'city.g.dart';
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@JsonSerializable()
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class CityModel {
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int? id; // 城市id
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String? value; // 显示值（国家/省份/城市名称）
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String? label; // 标签（通常与value相同）
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String? country; // 国家名称
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String? province; // 省份名称
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String? city; // 城市名称
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String? UTC; // 时区
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List<CityModel>? children;
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@JsonKey(ignore: true)
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String? keyword = "";
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@JsonKey(ignore: true)
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Color? color = Color(0xFFFFFFFF);
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CityModel({
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this.id,
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this.value,
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this.label,
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this.country,
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this.province,
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this.city,
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this.UTC,
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this.children,
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});
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// 从JSON反序列化时的异常处理
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factory CityModel.fromJson(Map<String, dynamic> json) {
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try {
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return _$CityModelFromJson(json);
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} catch (e) {
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print('Error parsing CityModel: $e');
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return CityModel(); // 返回空的CityModel
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}
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}
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// 序列化为JSON时的异常处理
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Map<String, dynamic> toJson() => _$CityModelToJson(this);
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// 获取显示名称（根据层级显示）
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String get displayName {
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if (city != null && city!.isNotEmpty) {
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// 三级：国家-省份-城市
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return '${country ?? ''}-${province ?? ''}-${city ?? value ?? ''}';
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} else if (province != null && province!.isNotEmpty) {
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// 二级：国家-省份
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return '${country ?? ''}-${province ?? value ?? ''}';
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} else {
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// 一级：国家
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return country ?? value ?? '';
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}
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}
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}
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class CityModelController extends GetControllerEx<CityModel> {
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List<CityModel> cityList = [];
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LanguageController languageController = Get.find();
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RxInt tmp = 1.obs;
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RxBool isLoading = false.obs;
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List<String>? searchResults = []; // 新增：搜索结果列表
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CityModelController() {
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attr = GetModel(CityModel()).obs;
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}
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// 加载城市数据并赋值给cityList
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Future<void> loadAndSetCityData() async {
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try {
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isLoading.value = true;
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ef.log("开始加载城市数据...");
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final data = await _loadCityData();
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cityList = data;
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ef.log("城市数据加载完成，共${cityList.length}个国家");
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if (cityList.isNotEmpty) {
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// 打印前几个国家用于调试
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for (var i = 0; i < min(3, cityList.length); i++) {
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final country = cityList[i];
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ef.log(
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"国家: ${country.value}, 省份数量: ${country.children?.length ?? 0}");
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}
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}
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update();
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} catch (e) {
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ef.log("加载城市数据失败：$e");
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} finally {
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isLoading.value = false;
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}
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}
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// 内部加载方法
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Future<List<CityModel>> _loadCityData() async {
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try {
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// 获取当前语言代码
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String currentLanguageCode = AppLanguage().getCurrentLanguageCode();
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// 根据当前语言代码构建文件名
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final String fileName = 'assets/city/city_$currentLanguageCode.json';
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// 读取对应语言的JSON文件
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final String jsonString = await rootBundle.loadString(fileName);
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// 解析JSON数据并转换为 CityModel 列表
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final List<dynamic> jsonList = jsonDecode(jsonString);
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// 将 Map 转换为 CityModel
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return jsonList.map((json) => CityModel.fromJson(json)).toList();
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} catch (e) {
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ef.log("_loadCityData 失败：$e");
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return [];
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}
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}
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// 根据ID查找城市（支持国家、省份、城市所有层级）
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CityModel? findCityById(String id) {
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if (cityList.isEmpty) {
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ef.log("cityList为空，无法查找城市，请先调用 loadAndSetCityData()");
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return null;
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}
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final int? targetId = int.tryParse(id);
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if (targetId == null) {
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ef.log("ID格式错误：$id");
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return null;
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}
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ef.log("开始查找ID为 $targetId 的城市数据...");
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// 遍历三级结构
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for (var country in cityList) {
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// 检查国家
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if (country.id == targetId) {
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ef.log("找到匹配的国家: ${country.value}");
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return CityModel(
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id: country.id,
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value: country.value,
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label: country.label,
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country: country.value,
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province: null,
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city: null,
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UTC: country.UTC,
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);
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}
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// 检查省份
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for (var province in country.children ?? []) {
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if (province.id == targetId) {
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ef.log("找到匹配的省份: ${province.value}, 国家: ${country.value}");
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return CityModel(
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id: province.id,
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value: province.value,
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label: province.label,
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country: country.value,
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province: province.value,
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city: null,
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UTC: province.UTC,
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);
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}
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// 检查城市
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for (var city in province.children ?? []) {
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if (city.id == targetId) {
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ef.log(
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"找到匹配的城市: ${city.value}, 省份: ${province.value}, 国家: ${country.value}");
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return CityModel(
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id: city.id,
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value: city.value,
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label: city.label,
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country: country.value,
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province: province.value,
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city: city.value,
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UTC: city.UTC,
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);
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}
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}
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}
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}
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ef.log("未找到ID为 $targetId 的城市数据");
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return null;
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}
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// 根据名称查找城市
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CityModel? findCityByName(
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String countryName, String provinceName, String cityName) {
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if (cityList.isEmpty) {
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ef.log("cityList为空，无法查找城市");
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return null;
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}
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for (var country in cityList) {
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if (country.value == countryName) {
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for (var province in country.children ?? []) {
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if (province.value == provinceName) {
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for (var city in province.children ?? []) {
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if (city.value == cityName) {
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return city;
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}
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}
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}
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}
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}
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}
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return null;
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}
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// 检查是否已加载数据
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bool get isDataLoaded => cityList.isNotEmpty;
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void searchCities(String keyword) {
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model.keyword = keyword;
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searchResults?.clear();
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if (keyword.isEmpty) {
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return;
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}
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final keywordLower = keyword.toLowerCase();
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// 遍历所有城市数据
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for (var country in cityList) {
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final countryName = country.value ?? country.country ?? '';
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for (var province in country.children ?? []) {
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final provinceName = province.value ?? province.province ?? '';
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for (var city in province.children ?? []) {
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final cityName = city.value ?? city.city ?? '';
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final displayName = '$countryName-$provinceName-$cityName';
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// 模糊匹配
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if (countryName.toLowerCase().contains(keywordLower) ||
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provinceName.toLowerCase().contains(keywordLower) ||
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cityName.toLowerCase().contains(keywordLower) ||
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displayName.toLowerCase().contains(keywordLower)) {
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searchResults?.add(displayName);
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}
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}
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}
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}
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}
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// 根据显示名称获取对应的 CityModel
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CityModel? getCityByDisplayName(String displayName) {
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final parts = displayName.split('-');
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if (parts.length != 3) return null;
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final countryName = parts[0];
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final provinceName = parts[1];
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final cityName = parts[2];
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for (var country in cityList) {
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if ((country.value ?? country.country ?? '') == countryName) {
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for (var province in country.children ?? []) {
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if ((province.value ?? province.province ?? '') == provinceName) {
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for (var city in province.children ?? []) {
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if ((city.value ?? city.city ?? '') == cityName) {
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return city;
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}
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}
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}
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}
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}
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}
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return null;
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}
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}
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