From 6140f850e1995b79b846fe3d632beac5358533cd Mon Sep 17 00:00:00 2001
From: Michael <heluecht@pirati.ca>
Date: Thu, 29 Sep 2022 13:48:10 +0000
Subject: [PATCH] Detect the thread parent id if it is missing

---
 src/Protocol/ActivityPub/Processor.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/Protocol/ActivityPub/Processor.php b/src/Protocol/ActivityPub/Processor.php
index ad4d627213..cadf982139 100644
--- a/src/Protocol/ActivityPub/Processor.php
+++ b/src/Protocol/ActivityPub/Processor.php
@@ -980,6 +980,13 @@ class Processor
 				continue;
 			}
 
+			if (($receiver != 0) && empty($item['parent-uri-id']) && !empty($item['thr-parent-id'])) {
+				$parent = Post::selectFirst(['parent-uri-id'], ['uri-id' => $item['thr-parent-id'], 'uid' => [0, $receiver]]);
+				if (!empty($parent['parent-uri-id'])) {
+					$item['parent-uri-id'] = $parent['parent-uri-id'];
+				}
+			}
+
 			$item['uid'] = $receiver;
 
 			$type = $activity['reception_type'][$receiver] ?? Receiver::TARGET_UNKNOWN;