更新城市选择

lib/common/pojo/city.dart

@@ -0,0 +1,281 @@
+import 'dart:convert';
+import 'dart:math';
+
+import 'package:ef/base/getx/getx.dart';
+import 'package:ef/ef.dart';
+import 'package:flutter/services.dart';
+import 'package:json_annotation/json_annotation.dart';
+import 'package:vbvs_app/controller/setting/language/language_controller.dart';
+import 'package:vbvs_app/language/AppLanguage.dart';
+part 'city.g.dart';
+
+@JsonSerializable()
+class CityModel {
+  int? id; // 城市id
+  String? value; // 显示值（国家/省份/城市名称）
+  String? label; // 标签（通常与value相同）
+  String? country; // 国家名称
+  String? province; // 省份名称
+  String? city; // 城市名称
+  String? UTC; // 时区
+  List<CityModel>? children;
+
+  @JsonKey(ignore: true)
+  String? keyword = "";
+  @JsonKey(ignore: true)
+  Color? color = Color(0xFFFFFFFF);
+
+  CityModel({
+    this.id,
+    this.value,
+    this.label,
+    this.country,
+    this.province,
+    this.city,
+    this.UTC,
+    this.children,
+  });
+
+  // 从JSON反序列化时的异常处理
+  factory CityModel.fromJson(Map<String, dynamic> json) {
+    try {
+      return _$CityModelFromJson(json);
+    } catch (e) {
+      print('Error parsing CityModel: $e');
+      return CityModel(); // 返回空的CityModel
+    }
+  }
+
+  // 序列化为JSON时的异常处理
+  Map<String, dynamic> toJson() => _$CityModelToJson(this);
+
+  // 获取显示名称（根据层级显示）
+  String get displayName {
+    if (city != null && city!.isNotEmpty) {
+      // 三级：国家-省份-城市
+      return '${country ?? ''}-${province ?? ''}-${city ?? value ?? ''}';
+    } else if (province != null && province!.isNotEmpty) {
+      // 二级：国家-省份
+      return '${country ?? ''}-${province ?? value ?? ''}';
+    } else {
+      // 一级：国家
+      return country ?? value ?? '';
+    }
+  }
+}
+
+class CityModelController extends GetControllerEx<CityModel> {
+  List<CityModel> cityList = [];
+  LanguageController languageController = Get.find();
+  RxInt tmp = 1.obs;
+  RxBool isLoading = false.obs;
+  List<String>? searchResults = []; // 新增：搜索结果列表
+
+  CityModelController() {
+    attr = GetModel(CityModel()).obs;
+  }
+
+  // 加载城市数据并赋值给cityList
+  Future<void> loadAndSetCityData() async {
+    try {
+      isLoading.value = true;
+      ef.log("开始加载城市数据...");
+
+      final data = await _loadCityData();
+      cityList = data;
+
+      ef.log("城市数据加载完成，共${cityList.length}个国家");
+      if (cityList.isNotEmpty) {
+        // 打印前几个国家用于调试
+        for (var i = 0; i < min(3, cityList.length); i++) {
+          final country = cityList[i];
+          ef.log(
+              "国家: ${country.value}, 省份数量: ${country.children?.length ?? 0}");
+        }
+      }
+
+      update();
+    } catch (e) {
+      ef.log("加载城市数据失败：$e");
+    } finally {
+      isLoading.value = false;
+    }
+  }
+
+  // 内部加载方法
+  Future<List<CityModel>> _loadCityData() async {
+    try {
+      // 获取当前语言代码
+      String currentLanguageCode = AppLanguage().getCurrentLanguageCode();
+
+      // 根据当前语言代码构建文件名
+      final String fileName = 'assets/city/city_$currentLanguageCode.json';
+
+      // 读取对应语言的JSON文件
+      final String jsonString = await rootBundle.loadString(fileName);
+
+      // 解析JSON数据并转换为 CityModel 列表
+      final List<dynamic> jsonList = jsonDecode(jsonString);
+
+      // 将 Map 转换为 CityModel
+      return jsonList.map((json) => CityModel.fromJson(json)).toList();
+    } catch (e) {
+      ef.log("_loadCityData 失败：$e");
+      return [];
+    }
+  }
+
+  // 根据ID查找城市（支持国家、省份、城市所有层级）
+  CityModel? findCityById(String id) {
+    if (cityList.isEmpty) {
+      ef.log("cityList为空，无法查找城市，请先调用 loadAndSetCityData()");
+      return null;
+    }
+
+    final int? targetId = int.tryParse(id);
+    if (targetId == null) {
+      ef.log("ID格式错误：$id");
+      return null;
+    }
+
+    ef.log("开始查找ID为 $targetId 的城市数据...");
+
+    // 遍历三级结构
+    for (var country in cityList) {
+      // 检查国家
+      if (country.id == targetId) {
+        ef.log("找到匹配的国家: ${country.value}");
+        return CityModel(
+          id: country.id,
+          value: country.value,
+          label: country.label,
+          country: country.value,
+          province: null,
+          city: null,
+          UTC: country.UTC,
+        );
+      }
+
+      // 检查省份
+      for (var province in country.children ?? []) {
+        if (province.id == targetId) {
+          ef.log("找到匹配的省份: ${province.value}, 国家: ${country.value}");
+          return CityModel(
+            id: province.id,
+            value: province.value,
+            label: province.label,
+            country: country.value,
+            province: province.value,
+            city: null,
+            UTC: province.UTC,
+          );
+        }
+
+        // 检查城市
+        for (var city in province.children ?? []) {
+          if (city.id == targetId) {
+            ef.log(
+                "找到匹配的城市: ${city.value}, 省份: ${province.value}, 国家: ${country.value}");
+            return CityModel(
+              id: city.id,
+              value: city.value,
+              label: city.label,
+              country: country.value,
+              province: province.value,
+              city: city.value,
+              UTC: city.UTC,
+            );
+          }
+        }
+      }
+    }
+
+    ef.log("未找到ID为 $targetId 的城市数据");
+    return null;
+  }
+
+  // 根据名称查找城市
+  CityModel? findCityByName(
+      String countryName, String provinceName, String cityName) {
+    if (cityList.isEmpty) {
+      ef.log("cityList为空，无法查找城市");
+      return null;
+    }
+
+    for (var country in cityList) {
+      if (country.value == countryName) {
+        for (var province in country.children ?? []) {
+          if (province.value == provinceName) {
+            for (var city in province.children ?? []) {
+              if (city.value == cityName) {
+                return city;
+              }
+            }
+          }
+        }
+      }
+    }
+    return null;
+  }
+
+  // 检查是否已加载数据
+  bool get isDataLoaded => cityList.isNotEmpty;
+
+  void searchCities(String keyword) {
+    model.keyword = keyword;
+    searchResults?.clear();
+
+    if (keyword.isEmpty) {
+      return;
+    }
+
+    final keywordLower = keyword.toLowerCase();
+
+    // 遍历所有城市数据
+    for (var country in cityList) {
+      final countryName = country.value ?? country.country ?? '';
+
+      for (var province in country.children ?? []) {
+        final provinceName = province.value ?? province.province ?? '';
+
+        for (var city in province.children ?? []) {
+          final cityName = city.value ?? city.city ?? '';
+          final displayName = '$countryName-$provinceName-$cityName';
+
+          // 模糊匹配
+          if (countryName.toLowerCase().contains(keywordLower) ||
+              provinceName.toLowerCase().contains(keywordLower) ||
+              cityName.toLowerCase().contains(keywordLower) ||
+              displayName.toLowerCase().contains(keywordLower)) {
+            searchResults?.add(displayName);
+          }
+        }
+      }
+    }
+  }
+
+  // 根据显示名称获取对应的 CityModel
+  CityModel? getCityByDisplayName(String displayName) {
+    final parts = displayName.split('-');
+    if (parts.length != 3) return null;
+
+    final countryName = parts[0];
+    final provinceName = parts[1];
+    final cityName = parts[2];
+
+    for (var country in cityList) {
+      if ((country.value ?? country.country ?? '') == countryName) {
+        for (var province in country.children ?? []) {
+          if ((province.value ?? province.province ?? '') == provinceName) {
+            for (var city in province.children ?? []) {
+              if ((city.value ?? city.city ?? '') == cityName) {
+                return city;
+              }
+            }
+          }
+        }
+      }
+    }
+    return null;
+  }
+}

lib/common/pojo/city.g.dart

@@ -0,0 +1,31 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'city.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+CityModel _$CityModelFromJson(Map<String, dynamic> json) => CityModel(
+      id: (json['id'] as num?)?.toInt(),
+      value: json['value'] as String?,
+      label: json['label'] as String?,
+      country: json['country'] as String?,
+      province: json['province'] as String?,
+      city: json['city'] as String?,
+      UTC: json['UTC'] as String?,
+      children: (json['children'] as List<dynamic>?)
+          ?.map((e) => CityModel.fromJson(e as Map<String, dynamic>))
+          .toList(),
+    );
+
+Map<String, dynamic> _$CityModelToJson(CityModel instance) => <String, dynamic>{
+      'id': instance.id,
+      'value': instance.value,
+      'label': instance.label,
+      'country': instance.country,
+      'province': instance.province,
+      'city': instance.city,
+      'UTC': instance.UTC,
+      'children': instance.children,
+    };