class ConvertReleasableNotesToCollection < ActiveRecord::DataMigration
  RELEASABLE_TYPES = [
    TalentRelease, 
    AppearanceRelease, 
    LocationRelease, 
    AcquiredMediaRelease, 
    MaterialRelease, 
    MusicRelease,
  ]

  def up
    RELEASABLE_TYPES.each { |type| convert_notes_to_collection_for(type) }
    say "Done."
  end

  private

  def convert_notes_to_collection_for(releasable_type)
    say "Converting #{releasable_type}#notes to collection..."

    releasable_type.where.not(notes_old: nil).find_each do |releasable|
      content = releasable[:notes_old]
      user = releasable.project.account.users.order(:created_at).first
      Note.create(content: content, user: user, notable: releasable)
    end
  end

  class Note < ActiveRecord::Base
    belongs_to :user
    belongs_to :notable, polymorphic: true
  end
end