bit.ly url shorter

bit_ly.rb

require 'rubygems'
require 'net/http'
Net::HTTP.version_1_2
require 'json'

class BitLy
  def initialize(params={})
    @base_query = "version=2.0.1&login=#{params[:id]}&apiKey=#{params[:api_key]}"
  end

  def get_short_url(url)
    query = "/shorten?" + @base_query + "&longUrl=#{url}"
    short_url = ""
    begin
      short_url = call_bit_api(query)[url]["shortUrl"]
    rescue
      short_url = nil
    end
    return short_url
  end

  def get_short_urls(urls)
    query =  "/shorten?" + @base_query + "&" + urls.map {|url| "longUrl=#{url}"}.join('&')
    urls = []
    begin
      urls = call_bit_api(query)
    rescue
      urls = nil
    end
    return urls
  end

  private

  def call_bit_api(query)
    result = JSON.parse(Net::HTTP.get("api.bit.ly", query))
    return result["results"]    
  end
end