task - SE api / interesting questions for user

gistfile1.rb

module StackExchangeAPI
  require 'net/http'
  require 'json'
  require 'csv'

  DOMAIN = 'http://api.stackexchange.com/'
  PARAMS = {site: 'stackoverflow'}

  class << self
    def get_user_info(id)
      path = "users/#{id}"
      uri = URI(DOMAIN+path)
      uri.query = URI.encode_www_form(PARAMS)
      response = Net::HTTP.get(uri)
      JSON.parse(response)['items'].first
    end

    def get_tags_for_user(id)
      path = "users/#{id}/tags"
      uri = URI(DOMAIN+path)
      uri.query = URI.encode_www_form(PARAMS)
      response = Net::HTTP.get(uri)
      JSON.parse(response)['items']
    end

    def get_questions_by_tags(tags)
      path = "search"
      uri = URI(DOMAIN+path)
      uri.query = PARAMS.merge({tagged:tags.join(";")}).map {|k,v| "#{k}=#{v}"}.join("&")
      response = Net::HTTP.get(uri)
      JSON.parse(response)['items']
    end

    def get_users_ids_by_username(username)
      response = Net::HTTP.get(URI("http://data.stackexchange.com/stackoverflow/csv/126464?Name="+username.gsub(" ","+")))
      parsed_response = CSV.parse(response)
      parsed_response.shift
      parsed_response.flatten!
      raise "User not found" if parsed_response.empty?
      if parsed_response.size > 1
        id = nil
        until parsed_response.include?(id)
          p "Specify one of ids (Not one user with this username):"
          p parsed_response.join(", ")
          id = gets.chomp
        end
      else
        id = parsed_response.first
      end
      return id
    end
  end
end

p "Enter User name"
username = gets.chomp
id = StackExchangeAPI.get_users_ids_by_username(username)
tags = StackExchangeAPI.get_tags_for_user(id).map{|item| item['name'] }
questions = StackExchangeAPI.get_questions_by_tags(tags)
p "Interesting questions for user:"
questions.each do |q|
  p "#{q['title']} [#{q['link']}]"
end