only enqueue next most important scan

app/jobs/domain/fa/job/base.rb

@@ -210,7 +210,7 @@ class Domain::Fa::Job::Base < Scraper::JobBase
       if creator = post.creator
         creator.state_ok!
         creator.save!
-        enqueue_user_scan(creator)
+        enqueue_user_scan(creator, at_most_one_scan: true)
       end
     end
 
@@ -233,8 +233,8 @@ class Domain::Fa::Job::Base < Scraper::JobBase
     ListingPageScanStats.new(new_posts:, all_posts:)
   end
 
-  sig { params(user: Domain::User::FaUser).void }
-  def enqueue_user_scan(user)
+  sig { params(user: Domain::User::FaUser, at_most_one_scan: T::Boolean).void }
+  def enqueue_user_scan(user, at_most_one_scan:)
     logger.tagged(make_arg_tag(user)) do
       args =
         if user.persisted?
@@ -260,18 +260,19 @@ class Domain::Fa::Job::Base < Scraper::JobBase
       end
 
       # don't enqueue any other jobs if the user page hasn't been scanned yet
-      return unless user.scanned_page_at?
+      return if at_most_one_scan && user.page_scan.due?
 
-      if user.gallery_scan.due? &&
-           defer_job(Domain::Fa::Job::UserGalleryJob, args)
+      if user.favs_scan.due? && defer_job(Domain::Fa::Job::FavsJob, args)
         logger.info(
           format_tags(
-            "enqueue user gallery job",
-            make_tag("last gallery scan", user.gallery_scan.ago_in_words),
+            "enqueue user favs job",
+            make_tag("last favs scan", user.favs_scan.ago_in_words),
           ),
         )
       end
 
+      return if at_most_one_scan && user.favs_scan.due?
+
       if user.follows_scan.due? &&
            defer_job(Domain::Fa::Job::UserFollowsJob, args)
         logger.info(
@@ -282,11 +283,14 @@ class Domain::Fa::Job::Base < Scraper::JobBase
         )
       end
 
-      if user.favs_scan.due? && defer_job(Domain::Fa::Job::FavsJob, args)
+      return if at_most_one_scan && user.follows_scan.due?
+
+      if user.gallery_scan.due? &&
+           defer_job(Domain::Fa::Job::UserGalleryJob, args)
         logger.info(
           format_tags(
-            "enqueue user favs job",
-            make_tag("last favs scan", user.favs_scan.ago_in_words),
+            "enqueue user gallery job",
+            make_tag("last gallery scan", user.gallery_scan.ago_in_words),
           ),
         )
       end
@@ -483,7 +487,7 @@ class Domain::Fa::Job::Base < Scraper::JobBase
                 Domain::User::FaUser.create!(url_name:) do |user|
                   user.name ||= url_name
                 end
-            enqueue_user_scan(user)
+            enqueue_user_scan(user, at_most_one_scan: true)
           when FoundLink::FaPost
             fa_id = link.fa_id
             post =

app/jobs/domain/fa/job/scan_post_job.rb

@@ -28,7 +28,7 @@ class Domain::Fa::Job::ScanPostJob < Domain::Fa::Job::Base
 
     if creator = post.creator
       logger.push_tags(make_arg_tag(creator))
-      enqueue_user_scan(creator)
+      enqueue_user_scan(creator, at_most_one_scan: true)
     end
 
     if first_log_entry&.status_code == 200

app/jobs/domain/fa/job/user_page_job.rb

@@ -29,7 +29,7 @@ class Domain::Fa::Job::UserPageJob < Domain::Fa::Job::Base
       check_skip_followed_by_users_scan(user, user_page)
     end
 
-    enqueue_user_scan(user)
+    enqueue_user_scan(user, at_most_one_scan: false)
     logger.info "completed page scan"
   ensure
     user.save! if user