From d4883c1d32a143c5921279322bbbc2312bdf0b68 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lukas=20M=C3=BCllner?= <derkauzigekoala@gmail.com>
Date: Wed, 4 Mar 2026 10:48:24 +0100
Subject: [PATCH] feat(validation): record independent discovery votes during
 catalog adds

- Add vote tracking when users add an existing global car entry
- Guard against duplicate votes by checking user_id + hw_id first
- Keep new-discovery flow voting unchanged while extending repeated-add validation
- Align scanner business flow with TPB community verification model
---
 lib/screens/scan_tab.dart | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/lib/screens/scan_tab.dart b/lib/screens/scan_tab.dart
index f901ef4..b238a36 100644
--- a/lib/screens/scan_tab.dart
+++ b/lib/screens/scan_tab.dart
@@ -340,6 +340,7 @@ class ScanTabState extends State<ScanTab> {
 
         if (addConfirmed == true) {
           await _addToCollection(collection.id, hwId);
+          await _ensureValidationVote(hwId);
           if (!mounted) return false;
           showGlobalSnackBar('$hwId added to "${collection.name}"! 🎉');
         }
@@ -410,6 +411,23 @@ class ScanTabState extends State<ScanTab> {
       'user_id': supabase.auth.currentUser!.id,
     });
   }
+
+  Future<void> _ensureValidationVote(String hwId) async {
+    final userId = supabase.auth.currentUser!.id;
+    final existingVote = await supabase
+        .from('car_votes')
+        .select('id')
+        .eq('hw_id', hwId)
+        .eq('user_id', userId)
+        .maybeSingle();
+
+    if (existingVote != null) return;
+
+    await supabase.from('car_votes').insert({
+      'hw_id': hwId,
+      'user_id': userId,
+    });
+  }
 }
 
 class _FoundCarSheet extends StatelessWidget {