Rakefile

# frozen_string_literal: true

require 'yaml'
require 'fileutils'

# Default archive year detection
def detect_year
  # Try to get year from index.md or use current year
  index_content = File.read('index.md', encoding: 'UTF-8') rescue nil
  if index_content
    # Look for date in the content
    date_match = index_content.match(/(\d{4})/)
    return date_match[1] if date_match
  end
  Time.now.year.to_s
end

# Default edition name
def detect_edition
  'devfest'
end

desc "Archive the current Jekyll build to assets/<year>/<edition>/"
task :archive, [:year, :edition] do |_t, args|
  args.with_defaults(year: detect_year, edition: detect_edition)

  year = args[:year]
  edition = args[:edition]
  archive_path = "assets/#{year}/#{edition}"
  build_path = '_site'

  puts "Archiving #{year}/#{edition}..."
  puts "=" * 50

  # Step 1: Build the Jekyll site
  puts "\n[1/5] Building Jekyll site..."
  system('bundle exec jekyll build --trace') || exit(1)

  # Step 2: Clean and create archive directory
  puts "\n[2/5] Preparing archive directory: #{archive_path}/"
  FileUtils.rm_rf(archive_path)
  FileUtils.mkdir_p(archive_path)

  # Step 3: Copy build files to archive
  puts "\n[3/5] Copying build files..."
  Dir.glob("#{build_path}/*").each do |file|
    target = "#{archive_path}/#{File.basename(file)}"
    if File.directory?(file)
      FileUtils.cp_r(file, target)
    else
      FileUtils.cp(file, target)
    end
  end

  # Step 4: Fix relative URLs in HTML files
  puts "\n[4/5] Fixing relative URLs..."
  fix_urls(archive_path, "/assets/#{year}/#{edition}/")

  # Step 5: Add to archives menu
  puts "\n[5/5] Adding to archives menu..."
  add_to_archives(year, edition)

  puts "\n" + "=" * 50
  puts "Archive complete: #{archive_path}/"
  puts "View at: http://localhost:4000/#{archive_path}/"
end

desc "Build and archive with current year (default edition: devfest)"
task :archive_current do
  Rake::Task[:archive].invoke(detect_year, detect_edition)
end

desc "List existing archives"
task :list_archives do
  puts "Existing archives:"
  puts "-" * 40

  archives_yml = YAML.load_file('_data/commons.yml') rescue nil
  archives_md = File.read('archives.md', encoding: 'UTF-8') rescue nil

  if archives_md
    archives_md.scan(/-\s*title:\s*(.+?)\n\s*url:\s*(.+?)\n/).each do |title, url|
      puts "  #{title.strip} => #{url.strip}"
    end
  end

  puts "\nArchive directories:"
  Dir.glob('assets/*').select { |f| File.directory?(f) && f.match?(/\d{4}/) }.each do |year_dir|
    year = File.basename(year_dir)
    Dir.glob("#{year_dir}/*").select { |f| File.directory?(f) }.each do |edition_dir|
      edition = File.basename(edition_dir)
      puts "  #{year}/#{edition}/"
    end
  end
end

# Helper method to fix URLs in HTML files
def fix_urls(archive_path, base_path)
  html_files = Dir.glob("#{archive_path}/**/*.html")
  css_files = Dir.glob("#{archive_path}/**/*.css")
  js_files = Dir.glob("#{archive_path}/**/*.js")

  all_files = html_files + css_files + js_files

  all_files.each do |file|
    content = File.read(file, encoding: 'UTF-8')
    original_content = content.dup

    # Fix absolute asset paths to be relative to the archive location
    # Pattern: href="/assets/..." or src="/assets/..."
    # Replace with: href="assets/..." (relative)

    # For href attributes
    content.gsub!(/href="\/assets\//, 'href="assets/')
    content.gsub!(/href='\/assets\//, "href='assets/")

    # For src attributes
    content.gsub!(/src="\/assets\//, 'src="assets/')
    content.gsub!(/src='\/assets\//, "src='assets/")

    # Fix root-relative links to site root (keep as absolute for navigation)
    # href="/" becomes href="/" (unchanged - points to current site)
    # href="/archives" becomes href="/archives" (unchanged)

    # Fix url() references in CSS
    content.gsub!(/url\("?\/(assets\/[^"\)]+)\)?/, 'url(\1)')
    content.gsub!(/url\('?\/(assets\/[^'\)]+)\)?/, "url('\1')")

    # Write back if changed
    if content != original_content
      File.write(file, content)
      puts "    Fixed URLs in: #{file.sub(archive_path + '/', '')}"
    end
  end
end

# Helper method to add archive entry to archives.md
def add_to_archives(year, edition)
  archives_file = 'archives.md'

  unless File.exist?(archives_file)
    puts "  WARNING: #{archives_file} not found, skipping menu update"
    return
  end

  content = File.read(archives_file, encoding: 'UTF-8')

  # Check if already exists
  archive_url = "/assets/#{year}/#{edition}/"
  if content.include?(archive_url)
    puts "  Archive entry already exists in #{archives_file}"
    return
  end

  # Format edition name for display
  display_name = edition == 'devfest' ? "DevFest #{year}" : "#{edition.capitalize} #{year}"

  # Find the archives section and add the new entry at the beginning
  new_entry = "  - title: #{display_name}\n    url: #{archive_url}"

  # Insert after "archives:" line
  if content =~ /(archives:\n)/
    content = content.sub($1, "#{$1}#{new_entry}\n")
    File.write(archives_file, content)
    puts "  Added archive entry: #{display_name}"
  else
    puts "  WARNING: Could not find 'archives:' section in #{archives_file}"
  end
end

desc "Show help for archive task"
task :archive_help do
  puts <<-HELP
Archive Task - Usage Guide
==========================

Archive current site (auto-detects year):
  rake archive

Archive with specific year and edition:
  rake archive[2025,devfest]
  rake archive[2024,devfestnoz]
  rake archive[2023,special]

List existing archives:
  rake list_archives

Examples:
---------
# Archive 2025 DevFest
  rake archive[2025,devfest]

# Archive with current year
  rake archive_current

Archive Structure:
------------------
The archive will be created at: assets/<year>/<edition>/

This preserves the complete built site including:
- index.html (homepage)
- All CSS, JS, and images
- Speaker pages
- Agenda

The archive is automatically added to the Archives page.
  HELP
end