syncrow-app/lib/features/splash/view/splash_view.dart

import 'package:flutter/material.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:syncrow_app/features/auth/model/token.dart';
import 'package:syncrow_app/generated/assets.dart';
import 'package:syncrow_app/navigation/routing_constants.dart';

class SplashView extends StatelessWidget {
  const SplashView({super.key});

  @override
  Widget build(BuildContext context) {
    return FutureBuilder(
      future: getTokenAndValidate(context),
      builder: (context, snapshot) {
        if (snapshot.hasData) {
          if (snapshot.data ?? false) {
            Future.delayed(const Duration(seconds: 1), () {
              Navigator.pushReplacementNamed(context, Routes.homeRoute);
            });
          } else {
            Future.delayed(const Duration(seconds: 1), () {
              Navigator.pushReplacementNamed(context, Routes.authLogin);
            });
          }
        }
        return Scaffold(
          body: Stack(
            alignment: Alignment.center,
            children: [
              Container(
                width: MediaQuery.sizeOf(context).width,
                height: MediaQuery.sizeOf(context).height,
                decoration: const BoxDecoration(
                  image: DecorationImage(
                    image: AssetImage(
                      Assets.imagesBackground,
                    ),
                    fit: BoxFit.cover,
                  ),
                ),
              ),
              Container(
                width: MediaQuery.sizeOf(context).width,
                height: MediaQuery.sizeOf(context).height,
                decoration: const BoxDecoration(
                  image: DecorationImage(
                    image: AssetImage(Assets.imagesVector),
                    fit: BoxFit.cover,
                    opacity: 0.9,
                  ),
                ),
              ),
              SvgPicture.asset(
                Assets.imagesLogo,
                width: 240,
              )
            ],
          ),
        );
      },
    );
  }

  Future<bool> getTokenAndValidate(BuildContext context) async {
    return await const FlutterSecureStorage()
        .read(key: Token.loginAccessTokenKey)
        .then((value) {
      if (value == null) {
        return false;
      }
      print("Decoding token Started");
      var tokenData = Token.decodeToken(value ?? "");
      print("checking token data");

      if (tokenData.containsKey('exp')) {
        var exp = tokenData['exp'] ?? 0;
        var currentTime = DateTime.now().millisecondsSinceEpoch ~/ 1000;
        print('time: $currentTime exp: $exp');
        return currentTime < exp;
      } else {
        return false;
      }
    });
  }
}