Rakefile

require 'html-proofer'
require 'image_optim'
require 'English'

LIBS_DIR = '_libs'
BUILD_DIR = '_build'
NPM = `which npm`.chomp
WGET = `which wget`.chomp
JAMPACK = './node_modules/.bin/jampack'
JEKYLL_ENV = ENV['JEKYLL_ENV'] || 'development'

desc 'Jekyll build'
task :jekyll_build do
  puts '--> Jekyll build'
  system "rm -rf #{BUILD_DIR}"
  config = File.exist?("_config_#{JEKYLL_ENV}.yml") ? ",_config_#{JEKYLL_ENV}.yml" : nil

  system "jekyll build -d #{BUILD_DIR} --config _config.yml#{config}" || exit(1)

  if JEKYLL_ENV == 'production'
    system "jekyll build -d #{BUILD_DIR} --config _config.yml#{config}" || exit(1)
    puts '--> Run jampack'
    system "#{JAMPACK} #{BUILD_DIR}" || exit(1)
  end
end

desc 'npm install'
task :npm_install do
  puts '--> Grab front-end packages with npm'
  system "#{NPM} install"
end

desc 'Minify all html'
task :minify_html do
  puts '--> Minifying html'
  system "find #{BUILD_DIR} -type f -name '*.html' " \
    "| xargs -I '%' -P 4 -n 1 node_modules/.bin/html-minifier " \
    '--collapse-whitespace --remove-comments --remove-optional-tags ' \
    '--remove-redundant-attributes --remove-script-type-attributes ' \
    '--remove-tag-whitespace --use-short-doctype --minify-css true ' \
    "--conservativeCollapse --minify-js true '%' -o '%'"
end

desc 'Gzip'
task :gzip, [:ext] => [:gzip_all] do |_t, args|
  puts "--> GZipping '#{args.ext}'"
  system "find #{BUILD_DIR} -type f -name '*.#{args.ext}' -print0 | " \
         "xargs -0 -I % -P 4 -n 1 sh -c 'gzip -9 < % > %.gz'"
end

desc 'GZip All'
task :gzip_all do
  Rake::Task[:gzip].execute('html')
  Rake::Task[:gzip].execute('css')
  Rake::Task[:gzip].execute('js')
end

desc 'Test for 404s'
task :check_html do
  puts '--> Check for broken links'
  HTMLProofer.check_directory(
    BUILD_DIR,
    {
      ext: '.html',
      parallel: { in_processes: 4 },
      url_ignore: ['#', '/twitter.com/', '/disqus.com/'],
      validate_html: false,
      disable_external: true
    }
  ).run
end

desc 'Fix files permissions'
task :fix_files_permissions do
  puts '--> Fix files permissions'
  system "find #{BUILD_DIR} -type f | xargs -n 1 -P 4 chmod 644"
  system "find #{BUILD_DIR} -type d | xargs -n 1 -P 4 chmod 755"
end

desc 'Full build task'
task :build do
  puts '--> Start build'
  Rake::Task['npm_install'].invoke
  Rake::Task['jekyll_build'].invoke
  Rake::Task['minify_html'].invoke
  Rake::Task['gzip_all'].invoke
  Rake::Task['fix_files_permissions'].invoke
  Rake::Task['check_html'].invoke
  puts '--> End'
end

desc 'Clean activities CSV'
task :clean_activites_csv do
  ACTIVITIES = './_data/activities/'

  # Clean whitespaces
  system "find #{ACTIVITIES} -type f -name '*.csv' | \
          xargs -n 1 -P 4 sed -i -e 's/^[ \t]*//' -e 's/[ \t]*$//'"

  # Clean last blank line
  system "find #{ACTIVITIES} -type f -name '*.csv' | \
          xargs -n 1 -P 4 sed -i '/^ *$/d'"

  # Clean useless line
  system "find #{ACTIVITIES} -type f -name '*.csv' | \
          xargs -n 1 -P 4 sed -i '/Activities by bdossantos/d'"
end