From 4be632759ba3762f92d42368ebb0aecdf01bce84 Mon Sep 17 00:00:00 2001
From: "Leon.Schmidt" <leonmauricewill15@gmail.com>
Date: Tue, 11 Aug 2026 19:00:51 +0200
Subject: [PATCH] FIX - isolate custom app JSON payload

---
 sky_phone/source/client/custom_apps.lua |  3 ++-
 tests/custom_app_compat_client.lua      | 10 ++++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/sky_phone/source/client/custom_apps.lua b/sky_phone/source/client/custom_apps.lua
index 87b4222..ea0ed2c 100644
--- a/sky_phone/source/client/custom_apps.lua
+++ b/sky_phone/source/client/custom_apps.lua
@@ -280,7 +280,8 @@ local function normalize_json_payload(payload, maximum_bytes)
         return nil, "payload_too_large"
     end
 
-    return json.decode(encoded)
+    local decoded = json.decode(encoded)
+    return decoded
 end
 
 local function validate_optional_text(value, error_code, maximum_length)
diff --git a/tests/custom_app_compat_client.lua b/tests/custom_app_compat_client.lua
index 558184d..09353b2 100644
--- a/tests/custom_app_compat_client.lua
+++ b/tests/custom_app_compat_client.lua
@@ -24,10 +24,16 @@ Config = {
 }
 
 json = {
-    decode = function()
+    decode = function(encoded)
+        if encoded == "null" then
+            return nil, 5
+        end
         return {}
     end,
-    encode = function()
+    encode = function(value)
+        if value == nil then
+            return "null"
+        end
         return "{}"
     end,
 }