class ZoomUser < ApplicationRecord
  has_many :zoom_meetings, dependent: :nullify

  after_create :create_api_user, if: -> { api_id.nil? }
  before_destroy :abort_destroy

  scope :free, -> { where.not(id: ZoomMeeting.active.pluck(:zoom_user_id)) }

  def api_email
    self.class.api_email(self.id)
  end

  def create_api_user
    self.api_id = gateway.create_host(api_email)
    save
  end

  def delete_api_user
    gateway.delete_host(self.api_id)
    self.api_id = nil
    save
  end

  class << self
    def api_email(id)
      "host#{id}@directme"
    end
  end

  private

  def abort_destroy
    if api_id.present?
      errors.add(:base, "You can't destroy ZoomUser before explicitly deleting it through API.")
      throw(:abort)
    end
  end

  def gateway
    @gateway ||= ZoomGateway.new
  end
end