#!/usr/bin/env ruby

# This script generates a RSS for The Dilbert Blog with full entries,
# as opposed to summaries.

# Enable using gems I've installed, on Dreamhost
# http://nateclark.com/articles/2006/10/20/dreamhost-your-own-packages-and-gems
ENV['GEM_PATH'] = "/usr/lib/ruby/gems/1.8:/home/henrik/.gems"

require "rubygems"
require "feedalizer"

URL   = "http://dilbertblog.typepad.com/the_dilbert_blog/"
CACHE_FILE = "dilbert.cache"
CACHE_LIFE  = 30  # minutes

def uncached?
  !File.exist?(CACHE_FILE) ||
  (Time.now - File.mtime(CACHE_FILE))/60 > CACHE_LIFE
end

print "Content-Type: text/xml\n\n"

feedalize(URL) do
  feed.title = "The Dilbert Blog: Full Entries" 
  feed.description = "Dilbert humor, business absurdity, the meaning of life. And full entries."
  feed.about = URL

  scrape_items("//div.entry") do |rss_item, html_entry|
    header = html_entry.at('.entry-header')
    rss_item.link  = header.at('a').attributes['href']
    rss_item.date  = Time.parse(html_entry.at('.post-footers').inner_text)
    rss_item.title = header.inner_text
    rss_item.description = html_entry.at('.entry-body').inner_html
  end

  File.open(CACHE_FILE, 'w') {|f| f.write output }  # cache output
end if uncached?

print File.read(CACHE_FILE)