Rakefile

# Require jekyll to compile the site.
require "jekyll"
require 'time'

ENV["JEKYLL_ENV"] = 'production'


# Github pages publishing.
namespace :site do
  #
  # Because we are using 3rd party plugins for jekyll to manage the asset pipeline
  # and suchlike we are unable to just branch the code, we have to process the site
  # localy before pushing it to the branch to publish.
  #
  # We built this little rake task to help make that a little bit eaiser.
  #

  # Usaage:
  # bundle exec rake site:publish
  desc "Publish site to master"
  task :publish do
    # Compile the Jekyll site using the config.
    Jekyll::Site.new(Jekyll.configuration({
      "source"      => ".",
      "destination" => "_site",
      "config" => "_config.yml"
    })).process

    # Get the origin to which we are going to push the site.
    origin = `git config --get remote.origin.url`

    # Make a temporary directory for the build before production release.
    # This will be torn down once the task is complete.
    Dir.mktmpdir do |tmp|
      # Copy accross our compiled _site directory.
      cp_r "_site/.", tmp

      # Switch in to the tmp dir.
      Dir.chdir tmp

      # Prepare all the content in the repo for deployment.
      system "git init" # Init the repo.
      system "git add . && git commit -m 'Site updated at #{Time.now.utc}'" # Add and commit all the files.

      # Add the origin remote for the parent repo to the tmp folder.
      system "git remote add origin #{origin}"

      # Push the files to the gh-pages branch, forcing an overwrite.
      system "git push origin master:refs/heads/master --force"
    end

    # Done.
  end

  desc 'create a new draft post'
  task :post do
    title = ENV['TITLE']
    slug = "#{Date.today}-#{title.downcase.gsub(/[^\w]+/, '-')}"

    file = File.join(
        File.dirname(__FILE__),
        '_posts',
        slug + '.md'
    )

    File.open(file, "w") do |f|
        f << <<-EOS.gsub(/^       /, '')
        ---
        layout: post
        title: #{title}
        date: #{Time.now.strftime('%Y-%m-%d %H:%M')}
        published: false
        categories:
        ---

        EOS
    end

    system ("#{ENV['EDITOR']} #{file}")
  end
end

task default: ["site:publish"]