Calculate how spammy your Twitter followers are

Bot Score

# Author: @benjaminjackson

require 'rubygems'
require 'uri'
require 'net/http'
require 'json'

SCREEN_NAME = 'benjaminjackson'

class Float
    def round_decimal
       (self * 100).round.to_f / 100 
    end
end

class BotScore
    def initialize
        @ids = []
        @follower_counts = []
    end

    def run
        slice_number = 0        
        cursor = -1
        
        while cursor != 0
            # Grab the authorized user's followers
            uri = URI.parse("http://api.twitter.com/1/followers/ids.json?screen_name=#{SCREEN_NAME}&cursor=#{cursor}")
            response = Net::HTTP.get_response(uri)
            response_dict = JSON::parse(response.body)
            @ids += response_dict["ids"]
            cursor = response_dict["next_cursor"].to_i
        end

        # Get user details in batches of 100, the largest that Twitter will allow
        @ids.each_slice(100) do |slice|
            puts "checking #{slice_number +=1} of #{@ids.length/100 + 1} pages"
            uri = URI.parse("http://api.twitter.com/1/users/lookup.json")
            response = Net::HTTP.post_form(uri, { 'user_id' => slice.join(',') })
            users = JSON::parse(response.body)
            @follower_counts += users.map { |u| u['followers_count'].to_i }
        end

        # Run the numbers (from http://bit.ly/PsQBIC)
        sorted = @follower_counts.sort
        length = @follower_counts.length
        median = length % 2 == 1 ? sorted[length/2] : (sorted[length/2 - 1] + sorted[length/2]).to_f / 2
        percent = @follower_counts.reject { |count| count > 2 }.length / @follower_counts.length.to_f * 100

        puts "Your followers have a median of #{median} followers themselves"
        puts "#{percent.round_decimal}% of your followers have 2 or less followers"
      
    end
end

bot_score = BotScore.new
bot_score.run