Nanoc Refactor

nanoc.rb

require 'stringex'

usage       'create-post [options] title'
aliases     :create_post, :cp
summary     'create a new blog post'
description 'Creates new blog post with standard template.'

flag :h, :help,  'show help for this command' do |value, cmd|
  puts cmd.help
  exit 0
end

run do |opts, args, cmd|
  unless title = args.first
    puts cmd.help
    exit 0
  end

  options = {
    title: title,
    date: Time.now
  }

  post = Post.new(options)

  if post.create(Template.new(options))
    puts "Created post: #{post.path}"
    puts "URL: #{post.published_url}"
    exit 0
  else
    puts "Post already created: #{post.path}"
    exit 1
  end
end

class Template
  def initialize(options = {})
    @title = options.fetch(:title)
    @date  = options.fetch(:date)
  end

  def create
    <<TEMPLATE
    ---
    title: "#{title}"
    created_at: #{date}
    kind: article
    publish: false
    author: anonymous
    tags: [ 'foo', 'bar', 'baz' ]
    ---
    TEMPLATE
  end

  private

  attr_reader :title, :date
end

class Post
  def initialize(options = {})
    @title = options.fetch(:title)
    @date  = options.fetch(:date)
  end

  def path
    "./content/posts/#{date.strftime('%Y-%m-%d')}-#{title.to_url}.md"
  end

  def published_url
    "http://blog.arkency.com/#{date.year}/#{date.month}/#{title.to_url}"
  end

  def exists?
    File.exist?(path)
  end

  def create(template)
    if exists?
      false
    else
      File.open(path, 'w') { |f| f.write(template.create) }
      true
    end
  end

  private

  attr_reader :title, :date
end