VitalApp/lib/pages/splash/view.dart

import 'dart:async';

import 'package:fis_common/logger/logger.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:vitalapp/architecture/app_parameters.dart';
import 'package:vitalapp/rpc.dart';
import 'package:vitalapp/store/store.dart';
import 'controller.dart';

class SplashPage extends GetView<SplashController> {
  const SplashPage({super.key});

  @override
  Widget build(BuildContext context) {
    return const ImageAnimation();
  }
}

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

  @override
  State<ImageAnimation> createState() => _ImageAnimationState();
}

class _ImageAnimationState extends State<ImageAnimation>
    with SingleTickerProviderStateMixin {
  late final SplashController _controller;
  late AnimationController _animationController;
  late Animation<double> _animation;
  int _callServerTimes = 0;

  ///是否本地工作站（若为True，则需等待Server启动后再结束Splash Page）
  bool _isLocalStation = false;
  // 定义Timer，用于轮询
  Timer? _serverCheckTimer;

  @override
  void initState() {
    super.initState();
    _isLocalStation = AppParameters.data.isLocalStation;
    if (_isLocalStation) {
      _serverCheckTimer = Timer.periodic(
          Duration(seconds: 1), (Timer t) => checkForConnected());
    }
    _controller = Get.find<SplashController>();
    final animationCompleter = Completer<void>();
    Future.wait([
      _controller.loadData(),
      animationCompleter.future,
    ]).then((_) {
      if (_isLocalStation) {
        return;
      }

      _nextPage();
    });

    // 创建动画控制器
    _animationController = AnimationController(
      duration: const Duration(milliseconds: 4200),
      vsync: this,
    );

    // 创建动画
    _animation = Tween<double>(begin: 0, end: 1).animate(_animationController);

    // 启动动画
    _animationController.forward();

    _animationController.addStatusListener((status) {
      if (status == AnimationStatus.completed) {
        // 动画结束
        animationCompleter.complete();
      }
    });
  }

  @override
  void dispose() {
    // 销毁动画控制器
    _animationController.dispose();
    // 确保timer被释放
    _serverCheckTimer?.cancel();
    super.dispose();
  }

  void checkForConnected() async {
    // 这里替换成你的接口调用逻辑
    bool isCallSuccess = await callServer();

    if (isCallSuccess) {
      logger.i('call server success,times:${_callServerTimes}');
      // 如果接口调用成功，取消timer并且跳转到登录页面
      _serverCheckTimer?.cancel();
      _nextPage();
    }
  }

  Future<bool> callServer() async {
    try {
      await rpc.vinnoServer.echoAsync();
      return true;
    } catch (e) {
      _callServerTimes++;
      logger.i('call server times:${_callServerTimes}');
      if (kDebugMode) {
        print('call server times:${_callServerTimes}');
      }
    }
    return false;
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Theme.of(context).primaryColor,
      body: Center(
        child: AnimatedBuilder(
          animation: _animation,
          builder: (BuildContext context, Widget? child) {
            return Opacity(
              opacity: _animation.value,
              child: Container(
                alignment: Alignment.center,
                height: 200,
                child: Image.asset(
                  'assets/images/logo.png',
                  fit: BoxFit.fitHeight,
                ),
              ),
            );
          },
        ),
      ),
    );
  }

  void _nextPage() {
    /// 重启判断是否是web端并且无token
    if (!kIsWeb || Store.user.token == null) {
      _controller.onRouteTo();
    }

    /// web端 并且有token
    if (kIsWeb && Store.user.token != null) {
      Get.offAllNamed("/");
    }
  }
}