https://github.com/guardian/frontend/issues/1535

opengraph cache bust

require 'rubygems'
require 'trollop'
require 'json'
require 'cgi'
require 'rest_client'
require 'time'

CONF = Trollop::options do
    opt :since, "Seconds elapsed between now and the publication date", :type => :int, :required => true, :short => "-s"
end

class ContentApi 
    def initialize
        @host = 'http://content.guardianapis.com/search?format=json&page-size=50'
    end
    def recently_published(since = 60) # seconds
        JSON.parse(RestClient.get(@host).body)['response']['results'].select { |result|
            (Time.now.gmtime - Time.parse(result['webPublicationDate']).gmtime).to_i < since
        }
    end 
end

class OpenGraph
    def initialize
        @host = 'https://developers.facebook.com/tools/debug/og/object'
    end
    def ping(resource)
        RestClient.get(@host, { :params => { :q => CGI::escape(resource) }})
    end 
end

# ----

ContentApi.new.recently_published(CONF.since).each { |item|
    puts item.to_json
    puts OpenGraph.new.ping(item['webUrl']).body
}