require 'rake'
require 'tempfile'

# PAKER  = "./custom_rhino.jar"
# CMD    = "java -jar %s -c %s >> %s"
PAKER  = "./yuicompressor-2.2.5.jar"
CMD    = "java -jar %s --type css --charset UTF-8 < %s > %s"


TARGETS = {
  # Use array syntax ["file1", "file2", "file3"] to compress these 3 files into one
  ["base.css",
  "public.css",
  "header.css",
  "nhoods.css",
  "layout.css",
  "users.css",
  "userpane.css",
  "statuspane.css",
  "forms.css",
  "messaging.css",
  "search.css",
  "frame.css",
  "help.css",
  "footer.css",
  "../includes/libs/modalbox/modalbox.css",
  "tooltips.css",
  "progressmeter.css",
  "login.css",
  "dating.css",
  "dashboard.css",
  "entertainers.css"] => "_global.css",

  ["base.css",
  "header.css",
  "layout.css",
  "footer.css",
  "nhoods.css",
  "myaccount.css",
  "public.css",
  "forms.css",
  "progressmeter.css",
  "entertainers.css",
  "help.css",
  "adminui.css"] => "_admin.css",

  ["base.css",
  "header.css",
  "footer.css",
  "nhoods.css",
  "start.css"] => "_start.css",

  ["base.css",
  "header.css",
  "layout.css",
  "forms.css",
  "footer.css",
  "login.css"] => "_login.css"

}

task :default => [:compress]

desc 'Clean all the compressed files'
task :clean do
  TARGETS.each do |tgt, output|
    puts "Cleaning up old #{output}"
    FileUtils.rm_f(output)
  end
end

desc 'Compress all CSS into one file'

task :compress => :clean do
  TARGETS.each do |tgt, output|
    temp = Tempfile.new('js-compressing')
    puts "Preparing to compress #{unfold_object(tgt).join(", \n\t")} into #{output}..."
    print "Processing #{heap_size(unfold_object(tgt))}"
    unfold_object(tgt).each do |input|
      print "."
      system("cat #{input} >> #{temp.path}")
    end
    system(CMD % [PAKER, temp.path, output])
    puts "done. Result: #{heap_size([output])}\n\n"
  end
end

def unfold_object(obj)
  if obj.is_a? Array
    obj
  elsif obj.is_a? String and obj !~ /\*/
    [obj]
  else
    Dir[obj]
  end
end

def heap_size(arr)
#  `du -ch #{arr.join(" ")}` =~ /^(.+?)total$/
  $1.strip
end