shindan.rb

#!/usr/bin/env ruby
# -*- coding: utf-8 -*-
require 'net/http'
require 'uri'
Net::HTTP.version_1_2

class Shindan

  def initialize(arr)
    @arr = arr
  end

  def twitter_user?(usr)
    Net::HTTP.get_response(URI.parse("http://twitter.com/" + usr)).code == '200'
  end

  def result(usr)
    raise ArgumentError, 'user not found' unless twitter_user?(usr)
    @arr[usr.hash % @arr.size]
  end

end

exit 1 unless ARGV[0]
puts ARGV[0] + "さんの嫁は" + Shindan.new(['真田アサミ', '沢城みゆき', '氷上恭子', '林原めぐみ']).result(ARGV[0]) + "です．"