import 'dart:async';
import 'dart:io';

import 'package:device_info_plus/device_info_plus.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:shared_preferences/shared_preferences.dart';

import '../common/Global.dart';
import '../common/func.dart';
import '../dialog/agreement_dialog.dart';
import '../network/NetworkConfig.dart';
import 'login/login_model.dart';

class StartPage extends StatefulWidget {
  const StartPage({super.key});

  @override
  State<StartPage> createState() => _StartPageState();
}

class _StartPageState extends State<StartPage> {
  late StreamSubscription subscription;
  final LoginModel _viewModel = LoginModel();

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    subscription = _viewModel.streamController.stream.listen((event) {
      String code = event['code'];
      if (code.isNotEmpty) {
        switch (code) {
          case "getAppConfig":
            getIsFirst();
            break;
          case "loginToToken":
            Navigator.pushReplacementNamed(context, "/HomePage");
            break;
          case "loginError":
            NetworkConfig.token = "";
            Navigator.pushReplacementNamed(context, "/HomePage");
            break;
        }
      }
    });

    getDeviceInfo();
    _viewModel.getAppConfig();
  }

  ///获取设备号
  Future<void> getDeviceInfo() async {
    DeviceInfoPlugin deviceInfo = DeviceInfoPlugin();

    if (Platform.isIOS) {
      IosDeviceInfo iosInfo = await deviceInfo.iosInfo;
      NetworkConfig.deviceID = "${iosInfo.identifierForVendor}";
    } else {
      dynamic infoData = await Global.method.invokeMethod("getInfo");
      Map<String, dynamic> headersMap = Map<String, dynamic>.from(infoData);
      NetworkConfig.deviceID = headersMap["deviceID"];
      print("deviceID==${NetworkConfig.deviceID}");
    }
  }

  ///判断是否首次进入
  getIsFirst() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    bool isFirst = prefs.getBool("IsFirst") ?? true;
    if (isFirst) {
      FunctionUtil.popDialog2(context, AgreementDialog(
        onTap: (index) {
          if (index == 0) {
            _loadData();
          } else {
            SystemNavigator.pop();
            exit(0);
          }
        },
      ));
    } else {
      _loadData();
    }
  }

  Future<void> _loadData() async {
    // 获取token
    final SharedPreferences prefs = await SharedPreferences.getInstance();

    final String token = prefs.getString('token') ?? "";
    NetworkConfig.token = token;
    print("NetworkConfig.token==${NetworkConfig.token}");
    if (token != "") {
      _viewModel.loginToToken();
    } else {
      Navigator.pushReplacementNamed(context, "/HomePage");
    }
    setIsFirst();
  }

  setIsFirst() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    prefs.setBool("IsFirst", false);
  }

  @override
  void dispose() {
    // TODO: implement dispose
    subscription.cancel();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final size = MediaQuery.of(context).size;
    return Scaffold(
      backgroundColor: Color(0xFF17181A),
      body: Image(
        width: size.width,
        height: size.height,
        fit: BoxFit.cover,
        image: AssetImage('assets/images/img_start.png'),
      ),
    );
  }
}