reshare_path_length.rb

#!/usr/bin/env ruby
require './config/environment'

def path_length(post, length=0)
  if post.is_a?(Reshare)
    path_length(post.root, length+1)
  else
    length
  end
end

sum = 0.0
count = 0.0
max = 0.0

Reshare.all.each do |post|
  length = path_length(post)
  sum += length
  count += 1
  max = length > max ? length : max
end

puts "path length for #{count} reshares: average: #{sum/count}, max: #{max}"