Add shared preferences and chats page

lib/chats.dart

@@ -0,0 +1,57 @@
+import 'package:flutter/material.dart';
+import 'package:matrix/matrix.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:zenith/zenith_client_provider.dart';
+
+class ChatsPage extends StatefulWidget {
+  const ChatsPage({super.key});
+
+  @override
+  State<ChatsPage> createState() => _ChatsPageState();
+}
+
+class _ChatsPageState extends State<ChatsPage> {
+  final serverController = TextEditingController();
+  final usernameController = TextEditingController();
+  final passwordController = TextEditingController();
+  late Client client;
+  bool roomsLoading = false;
+
+  @override
+  void initState() {
+    super.initState();
+    client = Provider.of<ZenithClientProvider>(context, listen: false).client;
+    client.onRoomState.stream.listen((event) {
+      print(event.type);
+    });
+  }
+
+  void sendMessage() {}
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
+        title: const Text("Zenith"),
+      ),
+      body: Padding(
+        padding: const EdgeInsets.all(16.0),
+        child: Center(
+          child: roomsLoading
+              ? const CircularProgressIndicator()
+              : Column(
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  children: [Text("${client.rooms.length} Rooms.")],
+                ),
+        ),
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: sendMessage,
+        tooltip: 'Send message',
+        child: const Icon(Icons.send),
+      ),
+    );
+  }
+}

lib/login.dart

@@ -1,5 +1,9 @@
 import 'package:flutter/material.dart';
 import 'package:matrix/matrix.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:zenith/chats.dart';
+import 'package:zenith/zenith_client_provider.dart';
 
 class LoginPage extends StatefulWidget {
   const LoginPage({super.key});
@@ -14,24 +18,20 @@ class _LoginPageState extends State<LoginPage> {
   final passwordController = TextEditingController();
 
   void connectMatrix() async {
-    debugPrint("Making the client...");
-    final client = Client("zenith");
-    client.onLoginStateChanged.stream.listen((event) {
-      debugPrint("LoginState=${event.toString()}");
-    });
+    final provider = Provider.of<ZenithClientProvider>(context, listen: false);
+    await provider.initialize(serverController.text, usernameController.text,
+        passwordController.text);
 
-    debugPrint("Checking the homeserver...");
-    await client.checkHomeserver(Uri.parse(serverController.text));
+    final prefs = await SharedPreferences.getInstance();
+    prefs.setString("homeserver", serverController.text);
+    prefs.setString("username", usernameController.text);
+    prefs.setString("password", passwordController.text);
 
-    debugPrint("Logging in...");
-    await client.login(LoginType.mLoginPassword,
-        identifier: AuthenticationUserIdentifier(user: usernameController.text),
-        password: passwordController.text);
-
-    for (var room in client.rooms) {
-      debugPrint(
-          "Room ID: ${room.id}, Room Name: ${room.getLocalizedDisplayname()}");
-    }
+    if (!mounted) return;
+    Navigator.pushAndRemoveUntil(
+        context,
+        MaterialPageRoute(builder: (context) => const ChatsPage()),
+        (route) => false);
   }
 
   @override

lib/main.dart

@@ -1,5 +1,10 @@
 import 'package:flutter/material.dart';
+import 'package:matrix/matrix.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:zenith/chats.dart';
 import 'package:zenith/login.dart';
+import 'package:provider/provider.dart';
+import 'package:zenith/zenith_client_provider.dart';
 
 void main() {
   runApp(const MyApp());
@@ -10,13 +15,16 @@ class MyApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'Zenith',
-      theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
-        useMaterial3: true,
+    return ChangeNotifierProvider(
+      create: (context) => ZenithClientProvider(),
+      child: MaterialApp(
+        title: 'Zenith',
+        theme: ThemeData(
+          colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+          useMaterial3: true,
+        ),
+        home: const MyHomePage(),
       ),
-      home: const MyHomePage(),
     );
   }
 }
@@ -29,13 +37,36 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
+  bool savedCreds = false;
+
+  void getCreds() async {
+    final prefs = await SharedPreferences.getInstance();
+    final homeserver = prefs.getString("homeserver");
+    final username = prefs.getString("username");
+    final password = prefs.getString("password");
+
+    if (homeserver == null || username == null || password == null) return;
+    setState(() {
+      savedCreds = true;
+    });
+
+    if (!mounted) return;
+    final provider = Provider.of<ZenithClientProvider>(context, listen: false);
+    await provider.initialize(homeserver, username, password);
+  }
+
   @override
   void initState() {
     super.initState();
+    getCreds();
   }
 
   @override
   Widget build(BuildContext context) {
-    return const LoginPage();
+    if (!savedCreds) {
+      return const LoginPage();
+    } else {
+      return const ChatsPage();
+    }
   }
 }

lib/zenith_client_provider.dart

@@ -0,0 +1,25 @@
+import 'package:flutter/material.dart';
+import 'package:matrix/matrix.dart';
+
+class ZenithClientProvider extends ChangeNotifier {
+  late Client _client;
+
+  Client get client => _client;
+
+  void setClient(Client newClient) {
+    _client = newClient;
+    notifyListeners();
+  }
+
+  Future<void> initialize(
+      String homeserver, String username, String password) async {
+    _client = Client("zenith");
+    print("Checking homeserver...");
+    await client.checkHomeserver(Uri.parse(homeserver));
+    print("Logging in...");
+    await client.login(LoginType.mLoginPassword,
+        identifier: AuthenticationUserIdentifier(user: username),
+        password: password);
+    notifyListeners();
+  }
+}