Rakefile

require 'erb'
require 'json'

def _site
  File.join(Dir::pwd, "_site")
end

def _site_index_html
  File.join(_site, "index.html")
end

task :build do
  File.open("data.json", "r") do |f|
    @categories = JSON.parse(f.read)["categories"]
  end

  File.open("index.html.erb", "r") do |f|
    @template = f.read
  end

  p "Building template..."

  index_html = ERB.new(@template).result(binding)

  p "Making _site..."

  if FileTest::directory?(_site)
    FileUtils.rm_rf(_site, secure: true)
  end
  Dir::mkdir(_site)

  p "Writing index.html..."

  File.open(_site_index_html, "w") do |f|
    f.write(index_html)
  end

  p "Copying assets..."

  assets = File.join(Dir::pwd, "sample", "assets")
  FileUtils.cp_r(assets, File.join(_site, "assets"))

  p "Done!"
end

task :open do
  `open #{_site_index_html}`
end

task :deploy do
  system 'git checkout master'
  system 'rm -rf ./_site'
  system 'rake build'
  system 'rm -rf ../_site'
  system 'cp -r ./_site ../_site'
  system 'git checkout gh-pages'
  Dir[`pwd`[0..-2] + "/*"].each do |file|
    skip = ["CNAME", "sitemap", "Rakefile", "README"]
    skipping = false
    skip.each do |skip_file|
      skipping = true if skip_file.include? file
    end
    next if skipping
    begin
      FileUtils.rm_rf(file)
    rescue
      FileUtils.rm(file)
    end
  end
  system 'mv ../_site/* ./'
  system 'git status'
  msg = `git status`
  system 'git add .'
  system "git commit -m 'Sync gh-pages \n #{msg}'"
  system 'git push origin gh-pages'
  system 'git checkout master'
  system 'git checkout .'
  system 'rm -rf ../_site'
end