class Sensor

    def initialize(ip_address:, api_key:)
        # Set up our connection to the sensor so we can easily make requests to it later

    end

    def booking_has_presence(start_time, end_time)
        # Every x amount of time, check if presence is true
        Thread.new do
            ::Libuv::Reactor.new.run do |reactor|
                reactor.scheduler.at(start_time) do
                    reactor.scheduler.every('2m') do
                        this.has_presence()
                    end
                end
            end
        end

    def has_presence
        # Return true when detected and false when not
    end

    def current_booking(bookings)

    end

    def get_bookings
        # Get a list of bookings
    end

    # This function will be replaced by a scheduled call
    def start

        # Get our bookings
        bookings = get_bookings

        # Check what's on now
        booking = current_booking(bookings)

        # Just output if booking has usage for now
        puts
    end
end