Add in-app notifications for moderation actions/warnings (#30065)

app/models/admin/account_action.rb

@@ -52,7 +52,7 @@ class Admin::AccountAction
       process_reports!
     end
 
-    process_email!
+    process_notification!
     process_queue!
   end
 
@@ -158,8 +158,11 @@ class Admin::AccountAction
     queue_suspension_worker! if type == 'suspend'
   end
 
-  def process_email!
-    UserMailer.warning(target_account.user, warning).deliver_later! if warnable?
+  def process_notification!
+    return unless warnable?
+
+    UserMailer.warning(target_account.user, warning).deliver_later!
+    LocalNotificationWorker.perform_async(target_account.id, warning.id, 'AccountWarning', 'moderation_warning')
   end
 
   def warnable?

app/models/admin/status_batch_action.rb

@@ -65,7 +65,8 @@ class Admin::StatusBatchAction
       statuses.each { |status| Tombstone.find_or_create_by(uri: status.uri, account: status.account, by_moderator: true) } unless target_account.local?
     end
 
-    UserMailer.warning(target_account.user, @warning).deliver_later! if warnable?
+    process_notification!
+
     RemovalWorker.push_bulk(status_ids) { |status_id| [status_id, { 'preserve' => target_account.local?, 'immediate' => !target_account.local? }] }
   end
 
@@ -101,7 +102,7 @@ class Admin::StatusBatchAction
       text: text
     )
 
-    UserMailer.warning(target_account.user, @warning).deliver_later! if warnable?
+    process_notification!
   end
 
   def handle_report!
@@ -127,6 +128,13 @@ class Admin::StatusBatchAction
     !report.nil?
   end
 
+  def process_notification!
+    return unless warnable?
+
+    UserMailer.warning(target_account.user, @warning).deliver_later!
+    LocalNotificationWorker.perform_async(target_account.id, @warning.id, 'AccountWarning', 'moderation_warning')
+  end
+
   def warnable?
     send_email_notification && target_account.local?
   end

app/models/notification.rb

@@ -57,6 +57,9 @@ class Notification < ApplicationRecord
     severed_relationships: {
       filterable: false,
     }.freeze,
+    moderation_warning: {
+      filterable: false,
+    }.freeze,
     'admin.sign_up': {
       filterable: false,
     }.freeze,
@@ -90,6 +93,7 @@ class Notification < ApplicationRecord
     belongs_to :poll, inverse_of: false
     belongs_to :report, inverse_of: false
     belongs_to :account_relationship_severance_event, inverse_of: false
+    belongs_to :account_warning, inverse_of: false
   end
 
   validates :type, inclusion: { in: TYPES }
@@ -180,7 +184,7 @@ class Notification < ApplicationRecord
     return unless new_record?
 
     case activity_type
-    when 'Status', 'Follow', 'Favourite', 'FollowRequest', 'Poll', 'Report'
+    when 'Status', 'Follow', 'Favourite', 'FollowRequest', 'Poll', 'Report', 'AccountWarning'
       self.from_account_id = activity&.account_id
     when 'Mention'
       self.from_account_id = activity&.status&.account_id