Crappy LFM taste-o-meter

snippit.rb

def get_lfm_artist_gids(a_user)
  response = Net::HTTP.get_response("ws.audioscrobbler.com", "/2.0/?method=user.gettopartists&user=#{get_user(a_user)}&limit=1&api_key=#{$api_key}&format=json")
  jresponse = JSON.parse(response.body)
  puts jresponse.inspect
  page = 1
  gids = []
  until page > jresponse['topartists']['@attr']['totalPages'].to_i do
    response = Net::HTTP.get_response("ws.audioscrobbler.com", "/2.0/?method=user.gettopartists&user=#{get_user(a_user)}&limit=1000&page=#{page}&api_key=#{$api_key}&format=json")
    jresponse = JSON.parse(response.body)
    jresponse['topartists']['artist'].each do |artist|
      gids << { :gid => artist['mbid'] , :name => artist['name']}
    end
    page = page + 1
  end
  gids
end

def do_compare_gids(a_user,another_user)
   a_user_gids = get_lfm_artist_gids(a_user)
   another_user_gids = get_lfm_artist_gids(another_user)
   max = a_user_gids.count < another_user_gids.count ? a_user_gids.count : another_user_gids.count
   result = a_user_gids & another_user_gids
   "#{a_user} and #{another_user} are #{"%3.2f" % (result.count.to_f * 100 / max) }% compatible.\n" +
   "Top artists: #{result[0..4].map{|a| "#{a[:name]}"}.join(', ')}"
end