get commenters from FB post.

gc.rb

require 'net/http'
require 'json'

post_id = ARGV[0]
access_token = ARGV[1]

uri = URI("https://graph.facebook.com/v2.2/#{post_id}/comments?limit=5000&access_token=#{access_token}")
body = Net::HTTP.get(uri)

data = JSON.parse(body)

commenters = data['data'].map { |d| d['from'] }

commenters.reject! { |c| !c['category'].nil? }

commenters.map! { |c| { fbid: c['id'], name: c['name'] } }

target = File.new('data.js', 'w')

target.write("var data = #{commenters.to_json} ;")

target.close

p 'ok'