Rakefile

def system!(cmd)
  raise "Command #{cmd} failed" unless system(cmd)
end

task :build do
  system!('rm -rf _site')
  system!('bundle exec jekyll build')
end

task :serve do
  system!("bundle exec jekyll serve --watch --drafts")
end

task :dev_watch do
  system!('bundle exec jekyll build --watch -d ../wisecash/public/help')
end

# reduce size of images using imageoptim
# https://imageoptim.com/command-line.html
# there are other solutions, but this is not intrusive and works nicely
task :optimize do
  app = "/Applications/ImageOptim.app/Contents/MacOS/ImageOptim"
  system! "#{app} _assets/images/*.*"
end

# I could not find how to automatically build the slug based on the title.
# Even using "slug" in the front-matter did not work. This works, though.
task :auto_slug do
  require 'yaml'
  require 'jekyll/utils'
  require 'active_support/inflector'
  Dir.chdir('_posts') do
    Dir['*.md'].each do |filename|
      content = IO.read(filename)
      config = YAML.load(content)
      # avoid "amp" to end up in the slug
      title = config['title'].titleize
      config['title'] = title
      title = title.gsub("&", "and")
      slug = Jekyll::Utils.slugify(title)

      new_filename = "2000-01-01-#{slug}.md"
      if new_filename != filename
        puts "Renaming #{filename} to #{new_filename}..."
        #system!("git mv #{filename} #{new_filename}")
      end

      # previous attempt, keeping this in case it's useful later
      content.gsub!(/^\-{3}.*^\-{3}$/m, config.to_yaml + "---")
      IO.write(filename, content)
    end
  end
end