Add link_preview setting

app/models/account.rb

@@ -323,6 +323,13 @@ class Account < ApplicationRecord
     user&.setting_translatable_private || (settings.present? && settings['translatable_private']) || false
   end
 
+  def link_preview?
+    return user.setting_link_preview if local? && user.present?
+    return settings['link_preview'] if settings.present? && settings.key?('link_preview')
+
+    true
+  end
+
   def public_statuses_count
     hide_statuses_count? ? 0 : statuses_count
   end
@@ -389,6 +396,7 @@ class Account < ApplicationRecord
       'hide_following_count' => hide_following_count?,
       'hide_followers_count' => hide_followers_count?,
       'translatable_private' => translatable_private?,
+      'link_preview' => link_preview?,
     }
     if Setting.enable_block_emoji_reaction_settings
       config = config.merge({

app/models/concerns/has_user_settings.rb

@@ -103,6 +103,10 @@ module HasUserSettings
     settings['translatable_private']
   end
 
+  def setting_link_preview
+    settings['link_preview']
+  end
+
   def setting_hide_statuses_count
     settings['hide_statuses_count']
   end

app/models/user_settings.rb

@@ -13,6 +13,7 @@ class UserSettings
   setting :noindex, default: -> { ::Setting.noindex }
   setting :noai, default: true
   setting :translatable_private, default: false
+  setting :link_preview, default: true
   setting :bio_markdown, default: false
   setting :discoverable_local, default: false
   setting :hide_statuses_count, default: false