class Jekyll::Commands::New

def self.create_blank_site(path)
  Dir.chdir(path) do
    FileUtils.mkdir(%w(_layouts _posts _drafts))
    FileUtils.touch("index.html")
  end
end

def self.create_sample_files(path)
  FileUtils.cp_r site_template + '/.', path
  FileUtils.rm File.expand_path(scaffold_path, path)
end

def self.init_with_program(prog)
  prog.command(:new) do |c|
    c.syntax 'new PATH'
    c.description 'Creates a new Jekyll site scaffold in PATH'
    c.option 'force', '--force', 'Force creation even if PATH already exists'
    c.option 'blank', '--blank', 'Creates scaffolding but with empty files'
    c.action do |args, options|
      Jekyll::Commands::New.process(args, options)
    end
  end
end

def self.initialized_post_name
  "_posts/#{Time.now.strftime('%Y-%m-%d')}-welcome-to-jekyll.markdown"
end

def self.preserve_source_location?(path, options)
  !options["force"] && !Dir["#{path}/**/*"].empty?
end

def self.process(args, options = {})
  raise ArgumentError.new('You must specify a path.') if args.empty?
  new_blog_path = File.expand_path(args.join(" "), Dir.pwd)
  FileUtils.mkdir_p new_blog_path
  if preserve_source_location?(new_blog_path, options)
    Jekyll.logger.abort_with "Conflict:", "#{new_blog_path} exists and is not empty."
  end
  if options["blank"]
    create_blank_site new_blog_path
  else
    create_sample_files new_blog_path
    File.open(File.expand_path(initialized_post_name, new_blog_path), "w") do |f|
      f.write(scaffold_post_content)
    end
  end
  puts "New jekyll site installed in #{new_blog_path}."
end

def self.scaffold_path
  "_posts/0000-00-00-welcome-to-jekyll.markdown.erb"
end

def self.scaffold_post_content
  ERB.new(File.read(File.expand_path(scaffold_path, site_template))).result
end

def self.site_template
  File.expand_path("../../site_template", File.dirname(__FILE__))
end