From cf876140056606f1416e2175d2bf9aafb6542932 Mon Sep 17 00:00:00 2001
From: SomnusVeritas <sites@skup.in>
Date: Fri, 20 Oct 2023 19:17:08 +0200
Subject: [PATCH] Autologin implemented

---
 lib/main.dart               |  3 +--
 lib/pages/splash_page.dart  | 33 ++++++++++++++++++++++++++-
 lib/services/db_helper.dart | 45 +++++++++++++++++++++++++++++--------
 3 files changed, 69 insertions(+), 12 deletions(-)

diff --git a/lib/main.dart b/lib/main.dart
index 87e433b..458b2b6 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,10 +1,9 @@
 import 'package:flutter/material.dart';
 import 'package:maggs_victory_voyage/services/db_helper.dart';
-
-import 'pages/login_page.dart';
 import 'pages/splash_page.dart';
 
 void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
   await DbHelper.init();
   runApp(const Application());
 }
diff --git a/lib/pages/splash_page.dart b/lib/pages/splash_page.dart
index 69769fe..fdad83a 100644
--- a/lib/pages/splash_page.dart
+++ b/lib/pages/splash_page.dart
@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:maggs_victory_voyage/services/db_helper.dart';
 
 import 'login_page.dart';
 
@@ -10,8 +11,38 @@ class SplashPage extends StatefulWidget {
 }
 
 class _SplashPageState extends State<SplashPage> {
+  late final Future<bool> loginFuture;
+
+  @override
+  void initState() {
+    super.initState();
+    loginFuture = DbHelper.autoLogin();
+    DbHelper.authEventStream.listen((event) => setState(() {}));
+  }
+
   @override
   Widget build(BuildContext context) {
-    return const LoginPage();
+    return Scaffold(
+      body: FutureBuilder(
+        future: loginFuture,
+        builder: (context, snapshot) {
+          if (snapshot.hasData) {
+            if (DbHelper.currentUser == null) {
+              return const LoginPage();
+            }
+            return const Column(
+              children: [
+                Text('Logged in!'),
+                TextButton(
+                  onPressed: DbHelper.logout,
+                  child: Text('Log out'),
+                ),
+              ],
+            );
+          }
+          return const Center(child: CircularProgressIndicator());
+        },
+      ),
+    );
   }
 }
diff --git a/lib/services/db_helper.dart b/lib/services/db_helper.dart
index 70cccd5..cab2fec 100644
--- a/lib/services/db_helper.dart
+++ b/lib/services/db_helper.dart
@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:supabase_flutter/supabase_flutter.dart';
 
@@ -7,6 +8,11 @@ class DbHelper {
 
   static final _supabase = Supabase.instance.client;
 
+  static User? get currentUser => _supabase.auth.currentUser;
+
+  static Stream<AuthState> get authEventStream =>
+      _supabase.auth.onAuthStateChange;
+
   static Future<void> init() async {
     await Supabase.initialize(
       url: 'https://vhmrtvhcmvylhrhblyjb.supabase.co',
@@ -17,22 +23,43 @@ class DbHelper {
 
   static void login(String username) async {
     final prefs = await _prefs;
-    final String? savedUsername = prefs.getString('username');
 
-    if (savedUsername == null) {
+    try {
+      await _supabase.auth.signInWithPassword(
+        email: '$username@skup.in',
+        password: 'password',
+      );
+      await prefs.setString('username', username);
+    } on AuthException catch (e) {
+      await _supabase.auth.signUp(
+          email: '$username@skup.in',
+          password: 'password',
+          data: {'username': username});
       await prefs.setString('username', username);
-      // TODO create new account
-    } else if (savedUsername == username) {
-      // TODO log into database
-    } else {
-      // TODO wrong username
     }
   }
 
+  static Future<bool> autoLogin() async {
+    final prefs = await _prefs;
+    final String? username = prefs.getString('username');
+    if (username == null) return false;
+    try {
+      await _supabase.auth.signInWithPassword(
+        email: '$username@skup.in',
+        password: 'password',
+      );
+      return true;
+    } on AuthException catch (e) {
+      if (kDebugMode) {
+        print('Could\'t automaticall log in.\n${e.message}');
+      }
+    }
+    return false;
+  }
+
   static void logout() async {
     final prefs = await _prefs;
     bool success = await prefs.remove('username');
-
-    //TODO log out on database
+    _supabase.auth.signOut();
   }
 }