#!/usr/bin/ruby

require "net/http"
require "rss/2.0"

#
# Handle RSS
#
def read_rss
  content = ""
  http = Net::HTTP.new("news.google.co.jp")
  http.start {|http|
    http.request_get("/news?ned=us&output=rss") { |res|
      res.read_body { |str|
        content = content + str
      }
    }
  }
  return content
end

def parse_rss
  rss = nil
  begin
    rss = RSS::Parser::parse(read_rss)
  rescue RSS::InvalidRSSError
    rss = RSS::Parser::parse(read_rss, false)
  end
  return rss
end

def print_rss_images
  counter = 0
  rss = parse_rss
  rss.items.each { |item|
    desc = item.description
    if desc.include?("imgurl")
      desc.scan(/\&imgurl=(\S+)\s/) { |imgurl|
        puts "<a href=\"#{item.link}\">"
        puts "  <img src=\"http://#{imgurl}\" alt=\"#{item.title}\" width=\"80\" height=\"80\">"
        puts "</a>"
      }
    end

    if counter == 5
      puts "<br>"
      counter = 0
    else
      counter = counter + 1
    end
  }
end

#
# Handle HTML
#
def print_header
  puts "<center>"
  puts "<br>"
  puts "<h1>Google News by ImageBox</h1>"
  puts "<br>"
end

def print_footer
  puts "</center>"
end


print_header
print_rss_images
print_footer