feat(messages): attachment retention task

config/app_config.yml.SAMPLE

@@ -173,6 +173,9 @@ default: &defaults
   # default to allow automatically adding new articles on sync only when less than 200 articles in total
   #shared_supplier_article_sync_limit: 200
 
+  # number of days after which attachment files get deleted
+  #attachment_retention_days: 365
+
 development:
   <<: *defaults
 

config/schedule.rb

@@ -12,9 +12,10 @@
   rake 'multicoops:run TASK=foodsoft:import_and_assign_bank_transactions'
 end
 
-# Weekly taks
+# Weekly tasks
 every :sunday, at: '7:14 am' do
   rake 'multicoops:run TASK=foodsoft:create_upcoming_periodic_tasks'
+  rake 'multicoops:run TASKS=foodsoft:prune_old_attachments'
 end
 
 # Finish ended orders

lib/tasks/foodsoft.rake

@@ -1,6 +1,6 @@
 # put in here all foodsoft tasks
 # => :environment loads the environment an gives easy access to the application
-namespace :foodsoft do
+namespace :foodsoft do # rubocop:disable Metrics/BlockLength
   desc 'Finish ended orders'
   task finish_ended_orders: :environment do
     Order.finish_ended!
@@ -79,6 +79,19 @@ namespace :foodsoft do
       rake_say "#{ba.name}: imported #{importer.count}, assigned #{assign_count}"
     end
   end
+
+  desc 'Prune attachments older than maximum age'
+  task prune_old_attachments: :environment do
+    if FoodsoftConfig[:attachment_retention_days]
+      rake_say "Pruning attachments older than #{FoodsoftConfig[:attachment_retention_days]} days"
+      ActiveStorage::Attachment.where("created_at < ?", FoodsoftConfig[:attachment_retention_days].days.ago).each do |attachment|
+        rake_say attachment.inspect
+        attachment.purge_later
+      end
+    else
+      rake_say "Please configure your app_config.yml accordingly:\nattachment_retention_days: <number of days>"
+    end
+  end
 end
 
 # Helper