From 25b426235b9f5af2a937db86279595aca4af6444 Mon Sep 17 00:00:00 2001
From: Morgan Pretty <morgan.t.pretty@gmail.com>
Date: Thu, 3 Apr 2025 08:48:07 +1100
Subject: [PATCH] Fixed a potential deadlock which could occur when typing

---
 .../Conversations/Input View/InputView.swift  | 36 +++++++++++--------
 1 file changed, 21 insertions(+), 15 deletions(-)

diff --git a/Session/Conversations/Input View/InputView.swift b/Session/Conversations/Input View/InputView.swift
index 23af8758c..76cfbc77b 100644
--- a/Session/Conversations/Input View/InputView.swift	
+++ b/Session/Conversations/Input View/InputView.swift	
@@ -303,22 +303,28 @@ final class InputView: UIView, InputViewButtonDelegate, InputTextViewDelegate, M
         // Suggest that the user enable link previews if they haven't already and we haven't
         // told them about link previews yet
         let text = inputTextView.text!
-        let areLinkPreviewsEnabled: Bool = dependencies[singleton: .storage, key: .areLinkPreviewsEnabled]
-        
-        if
-            !LinkPreview.allPreviewUrls(forMessageBodyText: text).isEmpty &&
-            !areLinkPreviewsEnabled &&
-            !dependencies[defaults: .standard, key: .hasSeenLinkPreviewSuggestion]
-        {
-            delegate?.showLinkPreviewSuggestionModal()
-            dependencies[defaults: .standard, key: .hasSeenLinkPreviewSuggestion] = true
-            return
+        DispatchQueue.global(qos: .userInitiated).async { [weak self, dependencies] in
+            let areLinkPreviewsEnabled: Bool = dependencies[singleton: .storage, key: .areLinkPreviewsEnabled]
+            
+            if
+                !LinkPreview.allPreviewUrls(forMessageBodyText: text).isEmpty &&
+                !areLinkPreviewsEnabled &&
+                !dependencies[defaults: .standard, key: .hasSeenLinkPreviewSuggestion]
+            {
+                DispatchQueue.main.async {
+                    self?.delegate?.showLinkPreviewSuggestionModal()
+                }
+                dependencies[defaults: .standard, key: .hasSeenLinkPreviewSuggestion] = true
+                return
+            }
+            // Check that link previews are enabled
+            guard areLinkPreviewsEnabled else { return }
+            
+            // Proceed
+            DispatchQueue.main.async {
+                self?.autoGenerateLinkPreview()
+            }
         }
-        // Check that link previews are enabled
-        guard areLinkPreviewsEnabled else { return }
-        
-        // Proceed
-        autoGenerateLinkPreview()
     }
 
     func autoGenerateLinkPreview() {