mailchimp-random-winner.rb

# This script will pick a random winner from your MailChimp audience.  Useful for giveaways!
# Just set the Audience ID, API_KEY, and Datacenter with the correct information for your mailing list
require 'rubygems'
require 'net/http'
require 'json'

AUDIENCE_ID = "YYYYYYYY"
API_KEY = "XXXXXXX"
DATACENTER = "us4"
BASE_URL = "https://" + DATACENTER + ".api.mailchimp.com/export/1.0/list/"


def getAudience
  emails = []
  
  # This is the REST URL that will be hit.  Change the jql query if you want to adjust the query used here
  uri = URI(BASE_URL + '?id=' + AUDIENCE_ID + "&apikey=" + API_KEY) 

  Net::HTTP.start(uri.hostname, uri.port, :use_ssl => uri.scheme == 'https') do |http|
	request = Net::HTTP::Get.new(uri)

	response = http.request request
	# If the response was good, then grab the data
	if response.code =~ /20[0-9]{1}/
		body = response.body
		
		body.each_line do |line|
			#email = line.s
			ind = line.index('"', 2)
			email = line[2..ind-1]
			# puts email
			emails.append(email)
			
		end
		puts "Loaded #{emails.length()} emails."
	else
	 raise StandardError, "Unsuccessful response code " + response.code + " for issue " + issue
	end
  end
  return emails
end

def getRandomEntry(emailArray)
	length = emailArray.length()
	winnerPos = Random.rand(length)
	winner = emailArray[winnerPos]
	puts "Winner:" + winner
end

def main ()
	emails = getAudience
	getRandomEntry(emails)
end

main