fix: session management with splash screen

lib/main.dart

 import 'package:flutter/material.dart';
 import 'package:flutter/gestures.dart';
 import 'package:go_router/go_router.dart';
-import 'package:shared_preferences/shared_preferences.dart';
 
 import 'package:google_fonts/google_fonts.dart';
+import 'package:library_app/src/screens/list/list_screen.dart';
 import 'package:library_app/src/screens/profile_edit_screen.dart';
+import 'package:library_app/src/widgets/splash_screen.dart';
 import 'package:provider/provider.dart';
 import 'package:library_app/src/providers/auth_provider.dart';
 import 'package:library_app/src/providers/navigations_provider.dart';
 import 'package:library_app/src/providers/book_provider.dart';
 
 import 'package:library_app/src/screens/form_screen.dart';
-import 'package:library_app/src/screens/list/list_screen.dart';
-
-void main() async {
-  SharedPreferences prefs = await SharedPreferences.getInstance();
-  final isAuthenticated = prefs.getString('access_token') != null;
 
-  runApp(isAuthenticated ? const LibraryApp() : const LoginScreen());
+void main() {
+  runApp(const LibraryApp());
 }
 
-class LibraryApp extends StatefulWidget {
+class LibraryApp extends StatelessWidget {
   const LibraryApp({super.key});
 
-  @override
-  State<LibraryApp> createState() => _LibraryApp();
-}
-
-class _LibraryApp extends State<LibraryApp> {
   @override
   Widget build(BuildContext context) {
     const title = 'Library App';
@@ -36,19 +28,19 @@ class _LibraryApp extends State<LibraryApp> {
       routes: [
         GoRoute(
           path: '/',
-          builder: (context, state) => const ListScreen(),
+          builder: (context, state) => const SplashScreen(),
         ),
         GoRoute(
-          path: '/sign-up',
-          builder: (context, state) => const SignUpScreen(),
+          path: '/home',
+          builder: (context, state) => const ListScreen(),
         ),
         GoRoute(
-          path: '/reset-password',
-          builder: (context, state) => const ResetPasswordScreen(),
+          path: '/login',
+          builder: (context, state) => const LoginScreen(),
         ),
         GoRoute(
-          path: '/confirm-reset-password',
-          builder: (context, state) => const ConfirmResetPasswordScreen(),
+          path: '/sign-up',
+          builder: (context, state) => const SignUpScreen(),
         ),
         GoRoute(
           path: "/change-password",

lib/src/providers/auth_provider.dart

@@ -99,7 +99,7 @@ class AuthProvider with ChangeNotifier {
         await storeAccessToken(token);
 
         setInvalidUsernameOrPassword(false);
-
+        if (context.mounted) context.go("/");
         debugPrint("Login successful $token");
       } else if (response.statusCode == 400) {
         setInvalidUsernameOrPassword(true);
@@ -116,7 +116,7 @@ class AuthProvider with ChangeNotifier {
     }
   }
 
-  Future<void> signOut() async {
+  Future<void> signOut(BuildContext context) async {
     final token = await getAccessToken();
 
     try {
@@ -133,6 +133,7 @@ class AuthProvider with ChangeNotifier {
         SharedPreferences prefs = await SharedPreferences.getInstance();
         prefs.remove('access_token');
         resetAllState();
+        if (context.mounted) context.go("/");
       } else {
         debugPrint("Logout failed: ${response.statusCode} ${response.body}");
       }

lib/src/screens/form_screen.dart

@@ -86,7 +86,7 @@ class SignUpScreen extends StatelessWidget {
 
     return FormScreen(
       title: title,
-      backRoute: "/",
+      backRoute: "/login",
       body: const SignUpForm(),
     );
   }
@@ -116,7 +116,7 @@ class ResetPasswordScreen extends StatelessWidget {
 
     return FormScreen(
       title: title,
-      backRoute: "/",
+      backRoute: "/login",
       body: const ResetPasswordForm(),
     );
   }

lib/src/screens/list/list_screen.dart

@@ -15,9 +15,11 @@ class ListScreen extends StatefulWidget {
 class _ListScreen extends State<ListScreen> {
   @override
   void initState() {
+    Future.delayed(Duration.zero, () {
       if (context.mounted) {
         Provider.of<NavigationsProvider>(context, listen: false).navigate(0);
       }
+    });
     super.initState();
   }
 

lib/src/widgets/forms/login_form.dart

@@ -140,13 +140,6 @@ class _LoginForm extends State<LoginForm> {
                           onPressed: () => context.go("/sign-up"),
                         ),
                       ),
-                      SizedBox(
-                        width: double.infinity,
-                        child: TextButton(
-                          child: const Text("Forgot Password"),
-                          onPressed: () => context.go("/reset-password"),
-                        ),
-                      ),
                     ],
                   ),
                 ],

lib/src/widgets/forms/sign_up_form.dart

 import 'package:flutter/material.dart';
 import 'package:flutter_svg/flutter_svg.dart';
-import 'package:go_router/go_router.dart';
 import 'package:library_app/src/widgets/ui/button_custom.dart';
 import 'package:provider/provider.dart';
 
@@ -147,13 +146,6 @@ class _SignUpForm extends State<SignUpForm> {
                           child: const Text("Submit"),
                         ),
                       ),
-                      SizedBox(
-                        width: double.infinity,
-                        child: TextButton(
-                          child: const Text("Login"),
-                          onPressed: () => context.go("/"),
-                        ),
-                      ),
                     ],
                   ),
                 ],

lib/src/widgets/home.dart

@@ -17,9 +17,11 @@ class _HomePage extends State<HomePage> {
   @override
   void initState() {
     super.initState();
+    Future.delayed(Duration.zero, () {
       if (context.mounted) {
         Provider.of<AuthProvider>(context, listen: false).getUserDetail();
       }
+    });
   }
 
   @override

lib/src/widgets/loans/admin_loan_list.dart

@@ -27,9 +27,11 @@ class _AdminLoanList extends State<AdminLoanList> {
 
   @override
   void initState() {
+    Future.delayed(Duration.zero, () {
       if (context.mounted) {
         Provider.of<AuthProvider>(context, listen: false).getLoans(type);
       }
+    });
     super.initState();
   }
 

lib/src/widgets/loans/loan_list.dart

@@ -17,9 +17,11 @@ class LoanList extends StatefulWidget {
 class _LoanList extends State<LoanList> {
   @override
   void initState() {
+    Future.delayed(Duration.zero, () {
       if (context.mounted) {
         Provider.of<AuthProvider>(context, listen: false).getMemberLoan();
       }
+    });
     super.initState();
   }
 

lib/src/widgets/profile.dart

@@ -16,11 +16,13 @@ class _Profile extends State<Profile> {
   @override
   void initState() {
     super.initState();
+    Future.delayed(Duration.zero, () {
       if (context.mounted) {
         if (Provider.of<AuthProvider>(context, listen: false).user == null) {
           Provider.of<AuthProvider>(context, listen: false).getUserDetail();
         }
       }
+    });
   }
 
   @override
@@ -97,7 +99,7 @@ class _Profile extends State<Profile> {
                     OutlinedButton(
                       child: const Text("Log Out"),
                       onPressed: () {
-                        authProvider.signOut();
+                        authProvider.signOut(context);
                       },
                     ),
                   ],

lib/src/widgets/splash_screen.dart

+import "package:flutter/material.dart";
+import "package:go_router/go_router.dart";
+import "package:provider/provider.dart";
+import 'package:flutter_svg/flutter_svg.dart';
+
+import "package:library_app/src/providers/auth_provider.dart";
+
+class SplashScreen extends StatefulWidget {
+  const SplashScreen({super.key});
+
+  @override
+  State<SplashScreen> createState() => _SplashScreen();
+}
+
+class _SplashScreen extends State<SplashScreen> {
+  @override
+  void initState() {
+    super.initState();
+    isAutheticated();
+  }
+
+  void isAutheticated() async {
+    final token = await Provider.of<AuthProvider>(context, listen: false)
+        .getAccessToken();
+
+    if (token != null) {
+      Future.delayed(const Duration(milliseconds: 1500), () {
+        if (context.mounted) context.go("/home");
+      });
+    } else {
+      Future.delayed(const Duration(milliseconds: 1500), () {
+        if (context.mounted) context.go("/login");
+      });
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final screenSize = MediaQuery.of(context).size;
+
+    return Scaffold(
+      body: Center(
+          child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          SvgPicture.asset(
+            "assets/images/splash_image.svg",
+            semanticsLabel: "Splash Screen",
+            height: screenSize.height * 0.3,
+          ),
+          const SizedBox(
+            height: 40.0,
+          ),
+          const SizedBox(
+            width: 30.0,
+            height: 30.0,
+            child: CircularProgressIndicator(),
+          ),
+        ],
+      )),
+    );
+  }
+}

pubspec.lock

@@ -164,18 +164,18 @@ packages:
     dependency: transitive
     description:
       name: leak_tracker
-      sha256: "3f87a60e8c63aecc975dda1ceedbc8f24de75f09e4856ea27daf8958f2f0ce05"
+      sha256: "7f0df31977cb2c0b88585095d168e689669a2cc9b97c309665e3386f3e9d341a"
       url: "https://pub.dev"
     source: hosted
-    version: "10.0.5"
+    version: "10.0.4"
   leak_tracker_flutter_testing:
     dependency: transitive
     description:
       name: leak_tracker_flutter_testing
-      sha256: "932549fb305594d82d7183ecd9fa93463e9914e1b67cacc34bc40906594a1806"
+      sha256: "06e98f569d004c1315b991ded39924b21af84cf14cc94791b8aea337d25b57f8"
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.5"
+    version: "3.0.3"
   leak_tracker_testing:
     dependency: transitive
     description:
@@ -212,18 +212,18 @@ packages:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: f7142bb1154231d7ea5f96bc7bde4bda2a0945d2806bb11670e30b850d56bdec
+      sha256: "0e0a020085b65b6083975e499759762399b4475f766c21668c4ecca34ea74e5a"
       url: "https://pub.dev"
     source: hosted
-    version: "0.11.1"
+    version: "0.8.0"
   meta:
     dependency: transitive
     description:
       name: meta
-      sha256: bdb68674043280c3428e9ec998512fb681678676b3c54e773629ffe74419f8c7
+      sha256: "7687075e408b093f36e6bbf6c91878cc0d4cd10f409506f7bc996f68220b9136"
       url: "https://pub.dev"
     source: hosted
-    version: "1.15.0"
+    version: "1.12.0"
   nested:
     dependency: transitive
     description:
@@ -433,10 +433,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: "5b8a98dafc4d5c4c9c72d8b31ab2b23fc13422348d2997120294d3bac86b4ddb"
+      sha256: "9955ae474176f7ac8ee4e989dadfb411a58c30415bcfb648fa04b2b8a03afa7f"
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.2"
+    version: "0.7.0"
   typed_data:
     dependency: transitive
     description:
@@ -481,10 +481,10 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: f652077d0bdf60abe4c1f6377448e8655008eef28f128bc023f7b5e8dfeb48fc
+      sha256: "3923c89304b715fb1eb6423f017651664a03bf5f4b29983627c4da791f74a4ec"
       url: "https://pub.dev"
     source: hosted
-    version: "14.2.4"
+    version: "14.2.1"
   web:
     dependency: transitive
     description: