18F/identity-dashboard

class Banner < ApplicationRecord
  validates :message, presence: true
  validates :end_date, 
    comparison: { greater_than: :start_date, message: 'must be after start date' }, 
    if: :start_date?, 
    allow_blank: true

  def started?
    start_date ? start_time < Time.zone.now : true
  end

  def ended?
    end_date && end_time < Time.zone.now
  end

  def active?
    started? && !ended?
  end

  def start_time
    start_date&.beginning_of_day || created_at.beginning_of_day
  end

  def end_time
    end_date.end_of_day
  end
end