event_mailer_preview.rb

class EventsMailerPreview
  EVENT_TYPES.each do |event_type|
    CM_CONTACT_STATES.keys.each do |cm_contact_state|
      create_contact_state_method(event_type, cm_contact_state)
      create_existing_contact_method(event_type, cm_contact_state)
    end
  end

  private

  def create_contact_state_method(event_type, cm_contact_state)
    define_method("#{cm_contact_state}_contact_#{event_type}".to_sym) do
      contact = send("update_#{event_type}_contact_state", cm_contact_state)
      NewContactMailer.notifier(contact.id)
    end
  end

  def create_existing_contact_method(event_type, cm_contact_state)
    define_method("#{cm_contact_state}_#{event_type}_existing".to_sym) do
      contact = send("update_#{event_type}_contact_state", cm_contact_state, true)
      NewContactMailer.notifier(contact.id)
    end
  end
end

  def self.create_contact_state_method(event_type, cm_contact_state)
    define_method("#{cm_contact_state}_contact_#{event_type}".to_sym) do
      contact = send("update_#{event_type}_contact_state", cm_contact_state)
      NewContactMailer.notifier(contact.id)
    end
  end

  def self.create_existing_contact_method(event_type, cm_contact_state)
    define_method("#{cm_contact_state}_#{event_type}_existing".to_sym) do
      contact = send("update_#{event_type}_contact_state", cm_contact_state, true)
      NewContactMailer.notifier(contact.id)
    end
  end

  EVENT_TYPES.each do |event_type|
    CM_CONTACT_STATES.keys.each do |cm_contact_state|
      self.create_contact_state_method(event_type, cm_contact_state)
      self.create_existing_contact_method(event_type, cm_contact_state)
    end
  end