My Jekyll Rake tasks

Rakefile

# frozen_string_literal: true

# Rake tasks for Jekyll
require 'rake/clean'
require 'stringex'

DEFAULT_TEXT = "Add first paragraph here \n\n\<\!--more--\>\n\nAdd more content here"
PAGES_DIR = 'pages'
POSTS_DIR = '_posts'
DRAFTS_DIR = '_drafts'
BUILD_DIR = '_site'

CLEAN.include BUILD_DIR

desc 'Build the site'
task :build do
  sh 'jekyll', 'build'
end

desc 'Start web server to preview site'
task :preview do
  sh 'jekyll', 'serve', '--watch', '--drafts', '--port', ENV.fetch('PORT', '4000')
end

# Hacking Rake for pretty args
# exit at the end of task so rake can not execute our args as task
# https://stackoverflow.com/a/36929059

desc 'Create a new draft, usage: rake draft "Title of draft"'
task :draft do
  _, title = ARGV
  title = title || 'New Draft'
  filepath = File.join(DRAFTS_DIR, "#{title.to_url}.md")
  build_file(filepath, title)
  exit
end

desc 'Create a new post, usage: rake post "Title of post"'
task :post do
  _, title = ARGV
  title = title || 'New Post'
  timestamp = Time.now.strftime('%Y-%m-%d')
  filepath = File.join(POSTS_DIR, "#{timestamp}-#{title.to_url}.md")
  build_file(filepath, title, timestamp: timestamp)
  exit
end

desc 'Create a new page, usage: rake page "Title of page"'
task :page do
  _, title = ARGV
  title = title || 'New Page'
  filepath = File.join(PAGES_DIR, "#{title.to_url}.md")
  build_file(filepath, title, page: true)
  exit
end

task default: :preview

def build_file(filepath, title, page: false, timestamp: false)
  open(filepath, 'w') do |f|
    f << "---\n"
    f << "layout: post\n" unless page
    f << "layout: page\n" if page
    f << "title: \"#{title}\"\n"
    f << "permalink: \"/#{title.to_url}\"\n" if page
    f << "date: #{timestamp || Time.now.strftime('%Y-%m-%d')}\n" unless page
    f << "comments: false\n" unless page
    f << "archive: false\n" unless page
    f << "categories: New-Post WIP\n" unless page
    f << "---\n"
    f << "\n"
    f << "#{DEFAULT_TEXT}\n"
  end
  puts "Created: #{filepath}"
end