import 'package:dio/dio.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'dart:convert';
import 'dart:async';

import '../pages/login/network_settings.dart';

class DioConfig {
  static String baseURL = 'http://192.168.4.61:8085/xcjgwms'; //域名
  static const timeout = 20000; //超时时间

  // 更新 baseURL 中的 IP 地址
  static Future<void> updateBaseURL() async {
    final settings = await SettingService.getNetworkSettings();
    String? ip = settings['ip'];
    String? port = settings['port'].toString();
    String? url = settings['url'];

    if (ip != null && ip.isNotEmpty) {
      baseURL = 'http://$ip:$port/$url';  // 动态更新 baseURL
      DioRequest dioRequest = DioRequest.getInstance();
      dioRequest.updateBaseUrl(baseURL);
    }
  }
}

class DioRequest {
  late Dio dio;
  static DioRequest? _instance;

  /// 构造函数
  DioRequest._internal() {
    dio = Dio();
    dio.options = BaseOptions(
        baseUrl: DioConfig.baseURL,
        connectTimeout: Duration(milliseconds: DioConfig.timeout),
        sendTimeout: Duration(milliseconds: DioConfig.timeout),
        receiveTimeout: Duration(milliseconds: DioConfig.timeout),
        contentType: 'application/json; charset=utf-8',
        headers: {});
    /// 请求拦截器 and 响应拦截机 and 错误处理
    dio.interceptors.add(InterceptorsWrapper(onRequest: (options, handler) {
      print("\n================== 请求数据 ==========================");
      print("url = ${options.uri.toString()}");
      print("headers = ${options.headers}");
      print("data = ${options.data}");
      return handler.next(options);
    }, onResponse: (response, handler) {
      print("\n================== 响应数据 ==========================");
      print("statusCode = ${response.statusCode}");
      print("data = ${response.data}");
      print("data = ${response.data['code']}");
      print("\n");
      if (response.data['code'] == 403) {
        Get.snackbar('Error', 'Access denied. Please login again.');
        Future.delayed(Duration(seconds: 2), () {
          Get.offNamed('/login');
        },);
      }
      handler.next(response);
    }, onError: (DioError e, handler) {
      print("\n================== 错误响应数据 ======================");
      print("type = ${e.type}");
      print("message = ${e.message}");
      print("\n");
      Get.snackbar('响应错误', '请检查网络连接或联系管理员');
      return handler.next(e);
    }));
  }
  // 获取单例实例
  static DioRequest getInstance() {
    return _instance ??= DioRequest._internal();
  }
  // 动态设置新的 baseURL（IP 地址）
  void updateBaseUrl(String newBaseUrl) {
    dio.options.baseUrl = newBaseUrl;
  }

}