From a961b2438674b147ebcfdf50ef3a0a0b1eca12e7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vi=CC=81ctor=20Falco=CC=81n?= <victoor89@gmail.com>
Date: Tue, 30 Dec 2025 07:44:11 +0100
Subject: [PATCH] recover idempotent transaction sync

---
 .../Sync/TransactionSyncController.php            | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/app/Http/Controllers/Sync/TransactionSyncController.php b/app/Http/Controllers/Sync/TransactionSyncController.php
index 537f585b..60e484b3 100644
--- a/app/Http/Controllers/Sync/TransactionSyncController.php
+++ b/app/Http/Controllers/Sync/TransactionSyncController.php
@@ -42,6 +42,21 @@ class TransactionSyncController extends Controller
             'user_id' => $request->user()->id,
         ]);
 
+        // If ID is provided, check if transaction already exists (idempotent create)
+        if (isset($data['id'])) {
+            $existing = Transaction::query()
+                ->where('id', $data['id'])
+                ->where('user_id', $request->user()->id)
+                ->first();
+
+            if ($existing) {
+                // Transaction already exists, return it as success (idempotent)
+                return response()->json([
+                    'data' => $existing->load('labels:id,name,color'),
+                ], 200);
+            }
+        }
+
         // If ID is provided, use it; otherwise Laravel will generate UUID v7
         if (isset($data['id'])) {
             $transaction->id = $data['id'];