Much base work started

app/models/concerns/processable.rb

@@ -0,0 +1,26 @@
+module Processable
+  extend ActiveSupport::Concern
+
+  included do
+    scope :processing_pending, -> { where("video_metadata->>'duration' IS NULL") }
+  end
+
+  def processed?
+    duration.present?
+  end
+
+  def processing_pending?
+    !processed? && processing_errors.blank?
+  end
+
+  def mark_processing_failed!(error_message)
+    self.processing_errors = [error_message]
+    save!
+  end
+
+  def retry_processing!
+    self.processing_errors = []
+    save!
+    # VideoProcessorJob.perform_later(id) - will be implemented later
+  end
+end