From 40bd7a4282b2a1ed2da00a94115be4be4711cfd6 Mon Sep 17 00:00:00 2001
From: nightpool <nightpool@cybre.space>
Date: Sat, 15 Jun 2019 11:46:08 -0400
Subject: [PATCH] don't send spammy mentions

---
 app/lib/activitypub/activity.rb | 7 ++++++-
 app/models/status.rb            | 8 ++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/app/lib/activitypub/activity.rb b/app/lib/activitypub/activity.rb
index 54b175613..e82af3ce6 100644
--- a/app/lib/activitypub/activity.rb
+++ b/app/lib/activitypub/activity.rb
@@ -90,7 +90,7 @@ class ActivityPub::Activity
     crawl_links(status)
 
     notify_about_reblog(status) if reblog_of_local_account?(status)
-    notify_about_mentions(status)
+    notify_about_mentions(status) unless spammy_mentions?(status)
 
     # Only continue if the status is supposed to have arrived in real-time.
     # Note that if @options[:override_timestamps] isn't set, the status
@@ -105,6 +105,11 @@ class ActivityPub::Activity
     status.reblog? && status.reblog.account.local?
   end
 
+  def spammy_mentions?(status)
+    status.has_non_mention_links? &&
+    @account.followers.local.count == 0
+  end
+
   def notify_about_reblog(status)
     NotifyService.new.call(status.reblog.account, status)
   end
diff --git a/app/models/status.rb b/app/models/status.rb
index 8d31fd382..3fee5b6f4 100644
--- a/app/models/status.rb
+++ b/app/models/status.rb
@@ -431,6 +431,14 @@ class Status < ApplicationRecord
     end
   end
 
+  def has_non_mention_links?
+    if local?
+      text.match? %r{https?://\w}
+    else
+      Nokogiri::HTML.fragment(text).css('a:not(.mention)').present?
+    end
+  end
+
   private
 
   def update_status_stat!(attrs)