From 7f365d6ce53ad97905e9bcff2b22166153b5a264 Mon Sep 17 00:00:00 2001
From: zsolt <zsolt.abdai@gmail.com>
Date: Thu, 13 Aug 2026 01:16:55 +0200
Subject: [PATCH] Require Google server client ID for sign-in

---
 lib/data.dart                 |  4 ++++
 lib/google_calendar_page.dart | 17 +++++++++++++++--
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/lib/data.dart b/lib/data.dart
index 696455d..033043f 100644
--- a/lib/data.dart
+++ b/lib/data.dart
@@ -9,6 +9,10 @@ const everyonePersonId = '_everyone';
 const defaultJarvisApiUrl = 'https://api-test.a-web.hu';
 const legacyJarvisApiUrl = 'http://80.211.202.74';
 const appVersionLabel = 'v1.0.0+1';
+const googleCalendarServerClientId = String.fromEnvironment(
+  'GOOGLE_SERVER_CLIENT_ID',
+  defaultValue: '',
+);
 
 const avatarPresets = [
   AvatarPreset('boy', 'Fi\u00fa', '\u{1f9d2}'),
diff --git a/lib/google_calendar_page.dart b/lib/google_calendar_page.dart
index 90a1edf..c3222cc 100644
--- a/lib/google_calendar_page.dart
+++ b/lib/google_calendar_page.dart
@@ -49,7 +49,7 @@ class _AccountsPageState extends State<AccountsPage> {
     });
 
     try {
-      await googleSignIn.initialize();
+      await _ensureGoogleInitialized();
       initialized = true;
       final lightweight = googleSignIn.attemptLightweightAuthentication();
       final account = lightweight == null ? null : await lightweight;
@@ -100,7 +100,7 @@ class _AccountsPageState extends State<AccountsPage> {
 
     try {
       if (!initialized) {
-        await googleSignIn.initialize();
+        await _ensureGoogleInitialized();
         initialized = true;
       }
       final account = await googleSignIn.authenticate(scopeHint: calendarScopes);
@@ -115,6 +115,19 @@ class _AccountsPageState extends State<AccountsPage> {
     }
   }
 
+  Future<void> _ensureGoogleInitialized() async {
+    if (googleCalendarServerClientId.isEmpty) {
+      throw Exception(
+        'Hi\u00e1nyzik a Google server client ID. Add meg buildel\u00e9skor: '
+        '--dart-define=GOOGLE_SERVER_CLIENT_ID=<Web application OAuth client ID>',
+      );
+    }
+
+    await googleSignIn.initialize(
+      serverClientId: googleCalendarServerClientId,
+    );
+  }
+
   Future<void> _loadGoogleCalendars({bool promptIfNecessary = true}) async {
     setState(() {
       loadingCalendars = true;