shoten url earthquake.gem plugin

bitly.rb

# earthquake.gem plugin
# shorten url using bit.ly

Earthquake.init do
  _ = config[:bitly] ||= {}
  _[:username] ||= ''
  _[:api_key] ||= ''
  _[:domain] ||= 'j.mp'
  _[:only_long_tweet] ||= false
  
  input_filter do |text|
    if text =~ /^:(update|reply)/ && (!_[:only_long_tweet] || text.size > 140)
      text.gsub(URI.regexp(['http','https'])) do |url|
        query = "domain=#{_[:domain]}&longUrl=#{URI.encode(url)}&login=#{_[:username]}&apiKey=#{_[:api_key]}"
        result = JSON.parse(Net::HTTP.get("api.bit.ly", "/v3/shorten?#{query}"))
        if result['status_code'] == 200
          result['data']['url'] 
        else
          url
        end
      end
    else
      text
    end
  end
end

output filter would be a nice addition