raffle.rb

#!/usr/bin/env ruby
# 735839035697074176
raise "Needs a tweet id" unless tweet_id = ARGV[0]

require "twitter"
require "pry"

while Time.now < Time.new(2016, 05, 26, 16, 44) do
  sleep 1
end

twitter = Twitter::REST::Client.new do |config|
  config.consumer_key = "xxx"
  config.consumer_secret = "xxx"
  config.access_token = "xxx"
  config.access_token_secret = "xxx"
end

retweeters = twitter.retweeters_of(tweet_id)
winner = retweeters.sample

puts "Winner:"
puts "\t#{winner.name} (@#{winner.screen_name})"
puts "Runner ups:"
(retweeters - winner).each do |runner|
  puts "\t#{runner.name} (@#{runner.screen_name})"
end