From 3ec80c7aec4c95c64c4cafb511610eab5fa31b1e Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Sat, 28 Sep 2019 01:33:16 +0200
Subject: [PATCH] Fix preview card image not being re-fetched even if link is
 re-posted (#11981)

Fix #11956
---
 app/models/preview_card.rb              | 4 ++++
 app/services/fetch_link_card_service.rb | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/app/models/preview_card.rb b/app/models/preview_card.rb
index 9d6c1938a0..4e89fbf851 100644
--- a/app/models/preview_card.rb
+++ b/app/models/preview_card.rb
@@ -47,6 +47,10 @@ class PreviewCard < ApplicationRecord
 
   before_save :extract_dimensions, if: :link?
 
+  def missing_image?
+    width.present? && height.present? && image_file_name.blank?
+  end
+
   def save_with_optional_image!
     save!
   rescue ActiveRecord::RecordInvalid
diff --git a/app/services/fetch_link_card_service.rb b/app/services/fetch_link_card_service.rb
index 4e75c370fa..ac5503d466 100644
--- a/app/services/fetch_link_card_service.rb
+++ b/app/services/fetch_link_card_service.rb
@@ -22,7 +22,7 @@ class FetchLinkCardService < BaseService
     RedisLock.acquire(lock_options) do |lock|
       if lock.acquired?
         @card = PreviewCard.find_by(url: @url)
-        process_url if @card.nil? || @card.updated_at <= 2.weeks.ago
+        process_url if @card.nil? || @card.updated_at <= 2.weeks.ago || @card.missing_image?
       else
         raise Mastodon::RaceConditionError
       end