import 'dart:convert';

import 'package:bot_toast/bot_toast.dart';
import 'package:dio/dio.dart';

import 'package:akuCommunity/constants/api.dart';

class NetUtil {
  Dio _dio;
  static final NetUtil _netUtil = NetUtil._internal();

  factory NetUtil() => _netUtil;

  NetUtil._internal() {
    BaseOptions options = BaseOptions(
      baseUrl: API.host,
      connectTimeout: API.networkTimeOut,
      receiveTimeout: API.networkTimeOut,
      sendTimeout: API.networkTimeOut,
      headers: {},
    );
    if (_dio == null) _dio = Dio(options);
  }

  Future<BaseModel> get(
    String path, {
    Map<String, dynamic> params,
  }) async {
    try {
      Response res = await _dio.get(path, queryParameters: params);
      return BaseModel.fromJson(res.data);
    } on DioError catch (e) {
      _parseErr(e);
    }
    return BaseModel.err();
  }

  _parseErr(DioError err) {
    _makeToast(String message) {
      BotToast.showText(text: '$message\_${err.response.statusCode}');
    }

    switch (err.type) {
      case DioErrorType.CONNECT_TIMEOUT:
      case DioErrorType.SEND_TIMEOUT:
      case DioErrorType.RECEIVE_TIMEOUT:
        _makeToast('连接超时');
        break;
      case DioErrorType.RESPONSE:
        _makeToast('服务器出错');
        break;
      case DioErrorType.CANCEL:
        break;
      case DioErrorType.DEFAULT:
        _makeToast('未知错误');
        break;
    }
  }
}

class BaseModel {
  int code;
  String message;
  dynamic data;
  BaseModel({
    this.code,
    this.message,
    this.data,
  });

  BaseModel.err({this.message = '未知错误', this.code = 0});

  factory BaseModel.fromMap(Map<String, dynamic> map) {
    if (map == null) return null;
    return BaseModel(
      code: map['code'] ?? 0,
      message: map['message'] ?? '',
      data: map['data'],
    );
  }

  factory BaseModel.fromJson(String source) =>
      BaseModel.fromMap(json.decode(source));
}