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require 'kramdown'
require 'fileutils'
require 'date'
require 'rss'
require 'find'
# Configuration all the things!
site_url = 'https://wruby.btxx.org'
site_name = 'wruby'
author_name = 'Bradley Taunt'
posts_dir = 'posts'
pages_dir = 'pages'
public_dir = 'public'
output_dir = 'build'
posts_output_dir = "#{output_dir}/posts"
pages_output_dir = "#{output_dir}/"
header_file = 'header.html'
footer_file = 'footer.html'
root_index_file = 'index.md'
rss_file = "#{output_dir}/index.atom"
# Make sure output directories exist
[posts_output_dir, pages_output_dir].each { |dir| FileUtils.mkdir_p(dir) }
# Read the footer content
footer_content = File.read(footer_file)
# Replace the title meta tag in the header.html
def replace_title_placeholder(header_content, title)
header_content.gsub('<title>{{TITLE}}</title>', "<title>#{title}</title>")
end
# Grab the title from each markdown file
def extract_title_from_md(lines)
first_line = lines.first
first_line&.start_with?('# ') ? first_line[2..-1].strip : 'Blog Index'
end
# Convert markdown files
def process_markdown_files(input_directory, output_directory, header_content, footer_content)
items = []
Find.find(input_directory) do |path|
next unless path =~ /\.md\z/
md_content = File.read(path)
lines = md_content.lines
title = extract_title_from_md(lines)
date = Date.parse(lines[2]&.strip || '') rescue Date.today
html_content = Kramdown::Document.new(md_content).to_html
relative_path = path.sub(input_directory + '/', '').sub('.md', '')
item_dir = File.join(output_directory, relative_path)
output_file = "#{item_dir}/index.html"
FileUtils.mkdir_p(item_dir)
header = replace_title_placeholder(header_content, title)
File.write(output_file, header + html_content + footer_content)
items << { title: title, date: date, link: relative_path + '/', content: html_content }
end
items
end
# Create the root index file
def generate_index(posts, header_content, footer_content, root_index_file, output_dir, posts_dir)
root_index_content = File.read(root_index_file)
root_title = extract_title_from_md(root_index_content.lines)
root_html = Kramdown::Document.new(root_index_content).to_html
header = replace_title_placeholder(header_content, root_title)
index_content = header + root_html + "<ul class=\"posts\">\n"
posts.each { |post| index_content << "<li><span>#{post[:date]}</span><a href='/#{posts_dir}/#{post[:link]}'>#{post[:title]}</a></li>\n" }
index_content << "</ul>\n" + footer_content
File.write("#{output_dir}/index.html", index_content)
end
# Generate the RSS feed
def generate_rss(posts, rss_file, author_name, site_name, site_url)
rss = RSS::Maker.make("atom") do |maker|
maker.channel.author = author_name
maker.channel.updated = Time.now.to_s
maker.channel.about = site_url
maker.channel.title = "#{site_name} RSS Feed"
posts.each do |post|
maker.items.new_item do |item|
item.link = "#{site_url}/#{posts_dir}/#{post[:link]}"
item.title = post[:title]
item.updated = post[:date].to_s
item.content.type = 'html'
item.content.content = post[:content]
end
end
end
File.write(rss_file, rss)
end
# Process header, posts, pages, etc.
header_content = File.read(header_file)
posts = process_markdown_files(posts_dir, posts_output_dir, header_content, footer_content).sort_by { |post| -post[:date].to_time.to_i }
pages = process_markdown_files(pages_dir, pages_output_dir, header_content, footer_content)
generate_index(posts, header_content, footer_content, root_index_file, output_dir, posts_dir)
FileUtils.cp_r(public_dir, output_dir)
generate_rss(posts, rss_file, author_name, site_name, site_url)
puts "Blog built successfully in '#{output_dir}' folder. Have a great day!"
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