#!/usr/bin/env ruby

require "digest/md5"

script_names = []
new_index = ""

IO.foreach("../public/index.html") do |line|
  if line =~ /<script.*src="(.*)"/
    script_names << $1
  else
    new_index << line
  end
end

new_js = ""
script_names.each do |script_name|
  compressor = IO.popen("java -jar yuicompressor-2.2.5.jar --type js", "w+")
  compressor.puts IO.read("../public/#{script_name}")
  compressor.close_write
  new_js += compressor.gets
  new_js += "\n\n"
end

digest = Digest::MD5.hexdigest(new_js)
filename = "../public/javascripts/#{digest}.js"
File.open(filename, "w") { |file| file.write(new_js) }
puts "Created #{filename}"

filename = "../public/index.html.minified"
File.open(filename, "w") do |file|
  minified_script_tag = "<script type=\"text/javascript\" src=\"javascripts/#{digest}.js\"></script>"
  file.write(new_index.gsub("<!-- minify here -->", minified_script_tag))
end
puts "Created #{filename}"