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require 'kramdown'
require 'fileutils'
require 'date'
require 'rss'
require 'find'
require 'yaml'
# Load configuration
config = YAML.load_file('_config.yml')
site_url = config['site_url']
site_name = config['site_name']
author_name = config['author_name']
posts_dir = config['directories']['posts']
pages_dir = config['directories']['pages']
public_dir = config['directories']['public']
output_dir = config['directories']['output']
posts_output_dir = config['directories']['posts_output']
pages_output_dir = config['directories']['pages_output']
header_file = config['files']['header']
footer_file = config['files']['footer']
root_index_file = config['files']['root_index']
posts_index_file = config['files']['posts_index']
rss_file = config['files']['rss']
post_count = config['misc']['post_count']
# 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, post_count, 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.first(post_count).each { |post| index_content << "<li><span>#{post[:date]}</span><a href='/#{posts_dir}/#{post[:link]}'>#{post[:title]}</a></li>\n" }
index_content << "</ul>\n<p><a href='/#{posts_dir}'>View all posts →</a></p>\n" + footer_content
File.write("#{output_dir}/index.html", index_content)
end
# Create the full posts list page
def generate_full_posts_list(posts, header_content, footer_content, posts_index_file, output_dir, posts_dir)
posts_index_content = File.read(posts_index_file)
posts_title = extract_title_from_md(posts_index_content.lines)
posts_html = Kramdown::Document.new(posts_index_content).to_html
header = replace_title_placeholder(header_content, posts_title)
list_content = header + posts_html + "<ul class=\"posts\">\n"
posts.each { |post| list_content << "<li><span>#{post[:date]}</span><a href='/#{posts_dir}/#{post[:link]}'>#{post[:title]}</a></li>\n" }
list_content << "</ul>\n" + footer_content
File.write("#{output_dir}/posts/index.html", list_content)
end
# Generate the RSS 2.0 feed
def generate_rss(posts, rss_file, author_name, site_name, site_url, posts_dir)
rss = RSS::Maker.make("2.0") do |maker|
maker.channel.author = author_name
maker.channel.updated = Time.now.to_s
maker.channel.title = "#{site_name} RSS Feed"
maker.channel.description = "The official RSS Feed for #{site_url}"
maker.channel.link = site_url
posts.each do |post|
date = Date.parse(post[:date].to_s).to_time + 12*60*60 # Force time to midday
item_link = "#{site_url}/#{posts_dir}/#{post[:link]}"
item_title = post[:title]
item_content = post[:content]
maker.items.new_item do |item|
item.link = item_link
item.title = item_title
item.updated = date.to_s
item.pubDate = date.rfc822
item.description = item_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, post_count, output_dir, posts_dir)
generate_full_posts_list(posts, header_content, footer_content, posts_index_file, output_dir, posts_dir)
FileUtils.cp_r(public_dir, output_dir)
generate_rss(posts, rss_file, author_name, site_name, site_url, posts_dir)
puts "Blog built successfully in '#{output_dir}' folder. Have a great day!"
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