require 'bundler'

Bundler.require

# https://stackoverflow.com/a/71994319

require 'uri'

def URI.escape(url)

url

end

set :markdown_engine, :redcarpet

set :markdown, layout_engine: :erb,

fenced_code_blocks: true,

lax_html_blocks: true,

with_toc_data: true

activate :syntax

activate :blog do |blog|

blog.prefix = "blog"

end

activate :directory_indexes

set :images_dir, 'images'

page "/docs/*", :layout => "docs"

page "/blog/*", :layout => :blog

configure :build do

activate :minify_css

end

helpers do

def body_for(resource)

html = resource.render layout: nil

Nokogiri::HTML::DocumentFragment.parse html

end

def javascript_include_tag(name, options = {})

options.merge!(onload: Opal::Sprockets.load_asset(name) + ";console.log('loaded #{name}')")

super(sprockets_path(name + ".js") || name, options)

end

def stylesheet_link_tag(name, options = {})

super(sprockets_path(name + ".css") || name, options)

end

def sprockets_path(name)

assets_path = Dir["#{__dir__}/source/assets/.*.json"].first

assets = File.exist?(assets_path) ? JSON.parse(File.read(assets_path)) : {}

asset = assets.dig("assets", name)

asset ? "/assets/#{asset}" : nil

end

def table_of_contents(resource)

body = body_for resource

content = []

in_list = false

headings = body.css('h2,h3')

headings.each_with_index do |h, idx|

subheading = h.name == 'h3'

if subheading and !in_list

in_list = true

content << %Q{\n<ul class="subchapter">}

elsif !subheading and in_list

in_list = false

content << "\n</ul>"

elsif subheading

in_list = true

end

li_class = subheading ? 'toc-list-subchapter' : 'toc-list-chapter'

content << %Q{\n<li class="#{li_class}">}

content << content_tag(:a, h.text, href: '#' + h[:id].to_s)

unless headings[idx + 1] && headings[idx + 1].name == 'h3'

content << '</li>'

end

end

content << "\n</ul></li>" if in_list

%Q{<ul class="nav opal-sidebar">#{content.join}</ul>}

end

end

ignore '*.sass'

ignore '*.scss'

activate(:external_pipeline,

name: :sprockets,

command: "bin/build-sprockets #{'--watch' unless build?}",

source: "assets/",

)