# that it returns an Array is an implementation detail
# that you have to build it in order to return it is also an implementation detail
def itinerary(user)
	itinerary = []

	user.bookings.each do |b|
		b.air_itineraries.each do |i|
			i.air_legs.each do |l|
				l.booked_flights.each do |f|
					itinerary << {
						:start_datetime => f.departure_timestamp.to_time,
						:type           => 'flight',
						:object         => f
					}
				end
			end
		end

		hotels_itinerary(b.booked_hotels, itinerary) # should be possible to do it nicer
		cars_itinerary(b.booked_cars, itinerary) # same
	end #end @user.bookings.each

	itinerary.sort_by { |e| e[:start_datetime] }
end

def hotels_itinerary(hotels, itinerary=[])
	itinerary.concat hotels.map do |h|
		{
			:start_datetime => h.checkin.to_time,
			:type           => 'hotel',
			:object         => h
		}
	end
end

def cars_itinerary(cars, itinerary=[])
	itinerary.concat cars.map do |c|
		{
			:start_datetime => c.pickup_timestamp.to_time,
			:type           => 'car',
			:object         => c
		}
	end
end