class Fugit::Duration

def deflate(options={})
  id = inflate
  h = id.h.dup
  s = h.delete(:sec) || 0
  keys = INFLA_KEYS
  mon = options[:month]
  yea = options[:year]
  keys = keys.dup if mon || yea
  if mon
    mon = 30 if mon == true
    mon = "#{mon}d" if mon.is_a?(Integer)
    keys.unshift([ :mon, { s: Fugit::Duration.parse(mon).to_sec } ])
  end
  if yea
    yea = 365 if yea == true
    yea = "#{yea}d" if yea.is_a?(Integer)
    keys.unshift([ :yea, { s: Fugit::Duration.parse(yea).to_sec } ])
  end
  keys[0..-2].each do |k, v|
    vs = v[:s]; next if s < vs
    h[k] = (h[k] || 0) + s.to_i / vs
    s = s % vs
  end
  h[:sec] = s.is_a?(Integer) ? s : s.round(SECOND_ROUND)
  self.class.allocate.init(@original, {}, h)
end