Autocreating heroku app

helper.rb

require 'fileutils'

class Helper

  attr_accessor :dir, :temp_dir
  attr_reader :template_path, :original_dir

  def initialize(dir = nil)
    @template_path = File.expand_path('../../app_template', __FILE__)
    @original_dir = FileUtils.pwd
    @dir = dir
  end

  def create_proxies(count = 1)
    puts "creating #{count} proxies"

    apps = Array.new count
    apps.map do
      create_proxy
    end
    cd_to original_dir

    apps
  end

  def create_proxy
    create_directory
    copy_template

    cd_to temp_dir

    initialize_git_and_commit_app
    app_url = create_heroku_app
    push_application
    rename_dir app_url

    app_url
  end

  def create_directory
    @temp_dir = File.join(dir, generate_dir_name)
    while Dir.exists?(temp_dir)
      @temp_dir = File.join(dir, generate_dir_name)
    end
    FileUtils.mkdir_p(temp_dir)
    puts "created #{temp_dir} directory"
  end

  def copy_template
    FileUtils.cp_r(template_path + '/.', temp_dir)
    puts "template copied"
  end

  def cd_to(path)
    FileUtils.cd path
    puts "cd to #{path}"
  end

  def initialize_git_and_commit_app
    `git init`
    `git add .`
    `git commit -m 'Init commit'`
    puts "git initialized"
  end

  def create_heroku_app
    out = `heroku create`.match(/http:\/\/(.+)\/ \|/)[1]
    puts "heroku app #{out} created"
    out
  end

  def push_application
    `git push heroku master`
    puts "app pushed to heroku"
  end

  def rename_dir(new_name)
    new_name = (temp_dir.split('/')[0..-2] << new_name).join('/')
    FileUtils.mv(temp_dir, new_name)
    puts "directory renamed. Full path: #{new_name}"
  end

  private

  def generate_dir_name
    (0..9).map { ('a'..'z').to_a[rand(26)] }.join
  end

end