together_mobile/lib/screens/welcome/welcome_screen.dart

import 'dart:async';

import 'package:flutter/material.dart';

import 'package:go_router/go_router.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';

import '/common/constants.dart';
import '/components/common_widgets.dart' show CommonElevatedButton;
import '/database/hive_database.dart';
import '/models/init_get_it.dart';
import '/models/token_model.dart';
import '/models/user_model.dart';
import '/request/signup_signin.dart';

class WelcomeScreen extends StatefulWidget {
  const WelcomeScreen({
    super.key,
    this.isLogout,
  });

  final String? isLogout;

  @override
  State<WelcomeScreen> createState() => _WelcomeScreenState();
}

class _WelcomeScreenState extends State<WelcomeScreen> {
  Future<int> _tryLoginUseToken() async {
    if (widget.isLogout != null) {
      return 200;
    }
    await getIt.get<Token>().init();
    if (getIt.get<Token>().token.isNotEmpty) {
      EasyLoading.showInfo('自动登录中...');
      try {
        Map<String, dynamic> res = await signinByToken();
        if (res['code'] == 10200) {
          await getIt.get<Token>().updateToken(res['token']);
          getIt.get<UserAccount>().init(res['data']);
          await HiveDatabase.init();
          return 10200;
        } else {
          getIt.get<Token>().clear();
          return 9999;
        }
      } catch (e) {
        return 500;
      }
    } else {
      return 200;
    }
  }

  @override
  void initState() {
    super.initState();
    _tryLoginUseToken().then((value) {
      if (value == 10200) {
        EasyLoading.showSuccess(
          '登录成功!',
          duration: const Duration(seconds: 3),
          dismissOnTap: true,
        );
        context.pushNamed('Chat');
      } else if (value == 9999) {
        EasyLoading.showInfo(
          '登录状态已过期，请重新登录!',
          duration: const Duration(seconds: 3),
          dismissOnTap: true,
        );
      } else if (value == 500) {
        EasyLoading.showError(
          '连接服务器失败，请稍后再试!',
          duration: const Duration(seconds: 3),
          dismissOnTap: true,
        );
      } else {
        EasyLoading.dismiss();
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
        child: Column(
          children: [
            const SizedBox(
              height: kDefaultPadding,
            ),
            Image.asset('assets/images/welcome_image.png'),
            CommonElevatedButton(
              onPressed: () => context.pushNamed('SignIn'),
              text: '登录',
            ),
            CommonElevatedButton(
              onPressed: () => context.pushNamed('SignUp'),
              text: '注册',
              color: kSecondaryColor,
            ),
          ],
        ),
      ),
    );
  }
}