module JamRuby
  class RsvpRequest < ActiveRecord::Base

    belongs_to :user, :class_name => "JamRuby::User"
    belongs_to :rsvp_slot, :class_name => "JamRuby::RsvpSlot"

    validates :message, length: {maximum: 1000}, no_profanity: true
    validates :chosen, :inclusion => {:in => [nil, true, false]}
    validates :canceled, :inclusion => {:in => [nil, true, false]}
    validates :rsvp_slot, presence: true

    def self.requests_by_session(session, user = nil)
      query = RsvpRequest
                .includes(:user)
                .joins(
                  %Q{
                    INNER join
                      rsvp_slots rs
                    ON
                      rsvp_requests.rsvp_slot_id = rs.id
                  }
                )
                .where(
                  %Q{
                    rs.music_session_id = '#{session.id}'
                  }
                )

      query = query.where("rsvp_requests.user_id = '#{user.id}'") unless user.nil?
      return query
    end

    # XXX we need to validate that only one RsvpRequest.chosen = true for a given RsvpSlot
    # in other words, you can have many requests to a slot, but only 0 or 1 rsvp_request.chosen = true)
  end

end