class Wikipedia
	require 'net/http'
	require 'rubygems'
	require 'hpricot'
	WikipediaFolder='wikipedia/'
	def is_today(t)
		n=Time.now
#		logger.info "filet #{t} nowis #{n}"
		(n.year==t.year) and (n.yday==t.yday)
	end

	def page(search_word)
		wd=WikipediaFolder.chop
		Dir.mkdir(wd) unless File.directory?(wd)
		wfile=WikipediaFolder+
			search_word.downcase+'.html'
		if !File.exist?(wfile) ||
			!is_today(File.mtime(wfile))
			search_word[0]=search_word[0,1].upcase
			#wikipedia likes the first char large
#			logger.info "downloading wikipage"
			begin
				pg=Net::HTTP.get('en.wikipedia.org','/wiki/'+ search_word)
#				logger.info "downloaded page for #{search_word}: #{pg}"
				p=Hpricot(pg)
				bc=p.search('#bodyContent')
				open(wfile,'w') {|f| f.puts bc }
#				logger.info "#{search_word} page downloaded"
			rescue Exception
				pg="unable to download: #{$!}... "
				if File.exist?(wfile)
					open(wfile,'r') {|f| pg+=f.read }
#					logger.info "no access, using stored #{search_word}"
				end
			end
		else
#			logger.info "wikicache for #{search_word} is current"
			open(wfile,'r') {|f| pg=f.read }
		end
		pg
	end
end