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Add logout button

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This commit is contained in:
Reimar 2024-08-21 12:49:38 +02:00
parent eef47f6ee4
commit 8e42e54c98
Signed by: Reimar
GPG Key ID: 93549FA07F0AE268
4 changed files with 112 additions and 45 deletions
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28
Mobile/lib/api.dart
View File

@ -1,4 +1,5 @@
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:http/http.dart' as http;
import 'dart:convert';
@ -51,3 +52,30 @@ Future<String?> request(BuildContext context, ApiService service, String method,
return response.body;
}
Future<bool> isLoggedIn(BuildContext context) async {
final messenger = ScaffoldMessenger.of(context);
final prefs = await SharedPreferences.getInstance();
final token = prefs.getString('token');
if (token == null) return false;
try {
String base64 = token.split('.')[1];
base64 += List.filled(4 - base64.length % 4, '=').join();
final payload = jsonDecode(String.fromCharCodes(base64Decode(base64)));
if (payload['exp'] < DateTime.now().millisecondsSinceEpoch / 1000) {
messenger.showSnackBar(const SnackBar(content: Text('Token expired, please sign in again')));
prefs.remove('token');
return false;
}
} catch (e) {
messenger.showSnackBar(const SnackBar(content: Text('Invalid token, please sign in again')));
prefs.remove('token');
return false;
}
return true;
}

6
Mobile/lib/login.dart
View File

@ -52,11 +52,11 @@ class _LoginPageState extends State<LoginPage> {
const Text('Password'),
TextField(controller: passwordInput, obscureText: true, enableSuggestions: false, autocorrect: false),
const SizedBox(height: 30),
ElevatedButton(onPressed: _login, child: const Text('Log ind')),
ElevatedButton(onPressed: _login, child: const Text('Login')),
const SizedBox(height: 10),
TextButton(
child: const Text('Registrer konto'),
onPressed: () => Navigator.pushReplacement(context, MaterialPageRoute(builder: (context) => const RegisterPage(title: 'Registrer'))),
child: const Text('Register account'),
onPressed: () => Navigator.pushReplacement(context, MaterialPageRoute(builder: (context) => const RegisterPage(title: 'Register'))),
)
]
)

75
Mobile/lib/main.dart
View File

@ -1,8 +1,10 @@
import 'package:flutter/material.dart';
import 'package:flutter_map/flutter_map.dart';
import "package:latlong2/latlong.dart";
import 'package:latlong2/latlong.dart';
import 'package:mobile/register.dart';
import "login.dart";
import 'package:shared_preferences/shared_preferences.dart';
import 'login.dart';
import 'api.dart' as api;
void main() {
runApp(const MyApp());
@ -33,7 +35,9 @@ class MyHomePage extends StatefulWidget {
}
class _MyHomePageState extends State<MyHomePage> {
final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
int _selectedIndex = 0;
bool _isLoggedIn = false;
void _onItemTapped(int index) {
setState(() {
@ -41,9 +45,40 @@ class _MyHomePageState extends State<MyHomePage> {
});
}
void _logout() async {
final prefs = await SharedPreferences.getInstance();
prefs.remove('token');
setState(() => _isLoggedIn = false);
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('Successfully logged out')));
Navigator.pop(context);
}
}
Future<void> _postNavigationCallback(dynamic _) async {
final isLoggedIn = await api.isLoggedIn(context);
setState(() => _isLoggedIn = isLoggedIn);
// Close sidebar
if (mounted && _scaffoldKey.currentState?.isDrawerOpen == true) {
Navigator.pop(context);
}
}
@override
void didChangeDependencies() {
super.didChangeDependencies();
api.isLoggedIn(context)
.then((value) => setState(() => _isLoggedIn = value));
}
@override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
title: Text(widget.title),
@ -61,13 +96,11 @@ class _MyHomePageState extends State<MyHomePage> {
),
floatingActionButton: Row(
mainAxisAlignment: MainAxisAlignment.end,
children: [
children: _isLoggedIn ? [] : [
FloatingActionButton(
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => const LoginPage(title: "Login")));
Navigator.push(context, MaterialPageRoute(builder: (context) => const LoginPage(title: "Login")))
.then(_postNavigationCallback);
},
tooltip: 'Login',
child: const Icon(Icons.login),
@ -125,6 +158,15 @@ class _MyHomePageState extends State<MyHomePage> {
thickness: 2,
indent: 40,
),
...(
_isLoggedIn ? [
ListTile(
title: const Text('Log out'),
leading: const Icon(Icons.logout),
selected: false,
onTap: _logout,
)
] : [
ListTile(
title: const Text('Register'),
leading: const Icon(Icons.add_box_outlined),
@ -133,11 +175,8 @@ class _MyHomePageState extends State<MyHomePage> {
// Update the state of the app
_onItemTapped(3);
// Then close the drawer
Navigator.push(
context,
MaterialPageRoute(
builder: (context) =>
const RegisterPage(title: "Register")));
Navigator.push(context, MaterialPageRoute(builder: (context) => const RegisterPage(title: 'Register')))
.then(_postNavigationCallback);
},
),
ListTile(
@ -148,13 +187,13 @@ class _MyHomePageState extends State<MyHomePage> {
// Update the state of the app
_onItemTapped(4);
// Then close the drawer
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => const LoginPage(title: "Login")));
Navigator.push(context, MaterialPageRoute(builder: (context) => const LoginPage(title: 'Login')))
.then(_postNavigationCallback);
},
),
],
)
]
)
]
),
);
}

8
Mobile/lib/register.dart
View File

@ -44,7 +44,7 @@ class _RegisterPageState extends State<RegisterPage> {
child: Column(
children: [
const SizedBox(height: 80),
const Text('Brugernavn'),
const Text('Username'),
TextField(controller: usernameInput),
const SizedBox(height: 30),
const Text('Email'),
@ -53,11 +53,11 @@ class _RegisterPageState extends State<RegisterPage> {
const Text('Password'),
TextField(controller: passwordInput, obscureText: true, enableSuggestions: false, autocorrect: false),
const SizedBox(height: 30),
ElevatedButton(onPressed: _register, child: const Text('Registrer')),
ElevatedButton(onPressed: _register, child: const Text('Register')),
const SizedBox(height: 10),
TextButton(
child: const Text('Log ind'),
onPressed: () => Navigator.pushReplacement(context, MaterialPageRoute(builder: (context) => const LoginPage(title: 'Log ind')))
child: const Text('Login'),
onPressed: () => Navigator.pushReplacement(context, MaterialPageRoute(builder: (context) => const LoginPage(title: 'Login')))
),
]
)