18F/confidential-survey

require 'securerandom'

class SurveyToken < ActiveRecord::Base
  def self.generate(survey_id)
    rec = create(survey_id: survey_id, token: SecureRandom.urlsafe_base64)
    rec.token
  end

  def self.valid?(survey_id, token)
    return false if token.blank?
    return true if Rails.env.development? && token == 'debug'
    where(survey_id: survey_id, token: token).exists?
  end

  def self.revoke(survey_id, token)
    t = where(survey_id: survey_id, token: token).first
    t.destroy unless t.nil?
  end

  def self.revoke_all_for_survey(survey_id)
    delete_all(survey_id: survey_id)
  end

  def to_s
    token
  end
end