Add trending statuses (#17431)

* Add trending statuses

* Fix dangling items with stale scores in localized sets

* Various fixes and improvements

- Change approve_all/reject_all to approve_accounts/reject_accounts
- Change Trends::Query methods to not mutate the original query
- Change Trends::Query#skip to offset
- Change follow recommendations to be refreshed in a transaction

* Add tests for trending statuses filtering behaviour

* Fix not applying filtering scope in controller

app/models/account.rb

@@ -40,13 +40,15 @@
 #  also_known_as                 :string           is an Array
 #  silenced_at                   :datetime
 #  suspended_at                  :datetime
-#  trust_level                   :integer
 #  hide_collections              :boolean
 #  avatar_storage_schema_version :integer
 #  header_storage_schema_version :integer
 #  devices_url                   :string
 #  suspension_origin             :integer
 #  sensitized_at                 :datetime
+#  trendable                     :boolean
+#  reviewed_at                   :datetime
+#  requested_review_at           :datetime
 #
 
 class Account < ApplicationRecord
@@ -56,6 +58,7 @@ class Account < ApplicationRecord
     remote_url
     salmon_url
     hub_url
+    trust_level
   )
 
   USERNAME_RE   = /[a-z0-9_]+([a-z0-9_\.-]+[a-z0-9_]+)?/i
@@ -74,11 +77,6 @@ class Account < ApplicationRecord
   include DomainMaterializable
   include AccountMerging
 
-  TRUST_LEVELS = {
-    untrusted: 0,
-    trusted: 1,
-  }.freeze
-
   enum protocol: [:ostatus, :activitypub]
   enum suspension_origin: [:local, :remote], _prefix: true
 
@@ -202,10 +200,6 @@ class Account < ApplicationRecord
     last_webfingered_at.nil? || last_webfingered_at <= 1.day.ago
   end
 
-  def trust_level
-    self[:trust_level] || 0
-  end
-
   def refresh!
     ResolveAccountService.new.call(acct) unless local?
   end
@@ -388,6 +382,22 @@ class Account < ApplicationRecord
     @synchronization_uri_prefix ||= "#{uri[URL_PREFIX_RE]}/"
   end
 
+  def requires_review?
+    reviewed_at.nil?
+  end
+
+  def reviewed?
+    reviewed_at.present?
+  end
+
+  def requested_review?
+    requested_review_at.present?
+  end
+
+  def requires_review_notification?
+    requires_review? && !requested_review?
+  end
+
   class Field < ActiveModelSerializers::Model
     attributes :name, :value, :verified_at, :account