empty_queue.rb

class EmptyQueue
  def initialize(company)
    @company = company
  end

  def reasons
    [
      {
        no_accounts: -> { company.accounts.none? },
        no_approved_content: -> { company.approved_contents.none? },
      },
      {
        no_contents_with_accounts: -> { company.contents_with_accounts.none? },
      },
      {
        no_categories: -> { company.categories.none? },
        no_timeslots: -> { company.schedules.none? },
      },
      {
        no_scheduled_content_accounts: -> { company.scheduled_content_accounts.none? },
        no_scheduled_content_categories: -> { company.scheduled_content_categories.none? },
      },
      {
        all_content_use_once_and_used: -> { company.used_all_use_once_content? },
      },
    ].lazy.
      map { |level_reasons| level_reasons.select { |k,v| v.call }.keys }.
      detect(&:any?) || []
  end

  private

  attr_reader :company
end