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

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:talk/network/NetworkConfig.dart';

import '../common/func.dart';
import '../dialog/agreement_dialog.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((newData) {
      String code = newData['code'];
      if (code.isNotEmpty) {
        switch (code) {
          case "login":
            Navigator.pushReplacementNamed(context, "/HomePage");
            break;

          default:
            Navigator.pushReplacementNamed(context, "/HomePage");
            break;
        }
      }
    });
    getIsFirst();
  }

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

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

    final String token = prefs.getString('token') ?? "";

    if (token != "") {
      _viewmodel.login("", "", 0, token);
    } else {
      Navigator.pushReplacementNamed(context, "/HomePage");
    }
    setIsFirst();
  }

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

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

  @override
  Widget build(BuildContext context) {
    return Image(
      width: MediaQuery.of(context).size.width,
      height: MediaQuery.of(context).size.height,
      fit: BoxFit.cover,
      image: const AssetImage('assets/images/img_start.png'),
    );
  }
}