fix navbar matching when using global back button

lib/components/login/login.dart

@@ -113,18 +113,29 @@ class _LoginPanelContentState extends State<LoginPanelContent> {
   final _usernameController = TextEditingController();
   final _passwordController = TextEditingController();
 
+  bool _loggingIn = false;
+
   void login() async {
     final username = _usernameController.text;
     final password = _passwordController.text;
 
     final auth = context.read<AuthService>();
 
+    setState(() {
+      _loggingIn = true;
+    });
     try {
       auth.login(username, password);
       print('Login successful');
+      setState(() {
+        _loggingIn = false;
+      });
     } catch (e) {
       // Handle error
       print('Login failed: $e');
+      setState(() {
+        _loggingIn = false;
+      });
       ScaffoldMessenger.of(
         context,
       ).showSnackBar(SnackBar(content: Text('Login failed')));
@@ -133,6 +144,15 @@ class _LoginPanelContentState extends State<LoginPanelContent> {
 
   @override
   Widget build(BuildContext context) {
+    Widget loginButtonContent = Text("Login");
+    if (_loggingIn) {
+      loginButtonContent = Padding(
+        padding: const EdgeInsets.all(8.0),
+        child: CircularProgressIndicator(),
+      );
+    } else {
+      loginButtonContent = Text("Login");
+    }
     return Column(
       mainAxisAlignment: MainAxisAlignment.center,
       mainAxisSize: MainAxisSize.min,
@@ -164,7 +184,7 @@ class _LoginPanelContentState extends State<LoginPanelContent> {
           mainAxisAlignment: MainAxisAlignment.center,
           spacing: 10,
           children: [
-            FilledButton(onPressed: login, child: Text("Login")),
+            FilledButton(onPressed: login, child: loginButtonContent),
             ElevatedButton(
               onPressed: widget.registerCb,
               child: Text("Register"),

lib/components/pages/newEntry.dart

@@ -0,0 +1,10 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:mileograph_flutter/services/dataService.dart';
+
+class NewEntryPage extends StatelessWidget {
+  Widget build(BuildContext context) {
+    final data = context.watch<DataService>();
+    return Center(child: Text("New Entry Page"));
+  }
+}

lib/components/pages/trips.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:mileograph_flutter/services/dataService.dart';
+
+class TripsPage extends StatelessWidget {
+  Widget build(BuildContext context) {
+    final data = context.watch<DataService>();
+    return ListView.builder(
+      itemCount: data.legs.length,
+      itemBuilder: (context, index) {
+        final leg = data.legs[index];
+        return Card(
+          margin: EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+          child: Padding(
+            padding: EdgeInsets.all(16),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  '${leg.start} → ${leg.end}',
+                  style: TextStyle(fontSize: 16),
+                ),
+                Text('Mileage: ${leg.mileage.toStringAsFixed(2)} km'),
+                Text('Headcode: ${leg.headcode}'),
+                Text('Begin: ${leg.beginTime}'),
+              ],
+            ),
+          ),
+        );
+      },
+    );
+  }
+}

lib/main.dart

@@ -1,7 +1,9 @@
 import 'package:flutter/material.dart';
 import 'package:dynamic_color/dynamic_color.dart';
 import 'package:mileograph_flutter/components/pages/calculator.dart';
+import 'package:mileograph_flutter/components/pages/newEntry.dart';
 import 'package:mileograph_flutter/components/pages/traction.dart';
+import 'package:mileograph_flutter/components/pages/trips.dart';
 import 'package:provider/provider.dart';
 
 import 'package:mileograph_flutter/components/pages/legs.dart';
@@ -85,8 +87,14 @@ class MyApp extends StatelessWidget {
           routes: [
             GoRoute(path: '/', builder: (_, __) => const Dashboard()),
             GoRoute(path: '/calculator', builder: (_, __) => CalculatorPage()),
+            GoRoute(
+              path: '/calculator/details',
+              builder: (_, __) => CalculatorPage(),
+            ),
             GoRoute(path: '/legs', builder: (_, __) => LegsPage()),
             GoRoute(path: '/traction', builder: (_, __) => TractionPage()),
+            GoRoute(path: '/trips', builder: (_, __) => TripsPage()),
+            GoRoute(path: '/add', builder: (_, __) => NewEntryPage()),
           ],
         ),
         GoRoute(path: '/login', builder: (_, __) => const LoginScreen()),
@@ -146,15 +154,29 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  int pageIndex = 0;
   final List<String> contentPages = [
     "/",
     "/calculator",
     "/legs",
     "/traction",
-    "/",
+    "/trips",
   ];
 
+  int _getIndexFromLocation(String location) {
+    int newIndex = contentPages.indexWhere((path) => location == path);
+    if (newIndex < 0) {
+      return 0;
+    }
+    return newIndex;
+  }
+
+  void _onItemTapped(int index, int currentIndex) {
+    if (index < 0 || index >= contentPages.length || index == currentIndex)
+      return;
+    context.push(contentPages[index]);
+    _getIndexFromLocation(contentPages[index]);
+  }
+
   bool loggedIn = false;
   bool _fetched = false;
 
@@ -184,7 +206,8 @@ class _MyHomePageState extends State<MyHomePage> {
   @override
   Widget build(BuildContext context) {
     Widget currentPage;
-
+    final location = GoRouterState.of(context).uri.toString();
+    final pageIndex = _getIndexFromLocation(location);
     final data = context.watch<DataService>();
     final auth = context.read<AuthService>();
 
@@ -232,10 +255,7 @@ class _MyHomePageState extends State<MyHomePage> {
       bottomNavigationBar: NavigationBar(
         selectedIndex: pageIndex,
         onDestinationSelected: (int index) {
-          setState(() {
-            pageIndex = index;
-            context.push(contentPages[index]);
-          });
+          _onItemTapped(index, pageIndex);
         },
         destinations: [
           NavigationDestination(icon: Icon(Icons.home), label: "Home"),
@@ -247,7 +267,7 @@ class _MyHomePageState extends State<MyHomePage> {
       ),
       body: currentPage,
       floatingActionButton: FloatingActionButton(
-        onPressed: null,
+        onPressed: () => {context.push("/add")},
         tooltip: 'New Entry',
         child: const Icon(Icons.add),
       ), // This trailing comma makes auto-formatting nicer for build methods.