module PrototypeClassGeneratorHelper
  def add_test_to_suite(class_file_name, class_name)
    sentinel        = '<!-- #end_of_test_list -->'
    test_suite_file = 'public/javascripts/test/unit/index.html'
    existing_match  = File.read(test_suite_file).match(Regexp.escape(class_file_name))
    log_message     = "entry for #{class_name} class in JS unit test suite"
    
    unless existing_match
      logger.create log_message
      gsub_file test_suite_file, /(#{Regexp.escape(sentinel)})/mi do |match|
        "<li><a href=\"#{class_file_name}_test.html\" target=\"test\">#{class_name} test</a></li>\n  #{match}"
      end
    else
      logger.found log_message
    end
  end
end
Rails::Generator::Commands::Create.send :include, PrototypeClassGeneratorHelper

class PrototypeClassGenerator < Rails::Generator::Base
  attr_accessor :class_name, :class_file_name
  
  def manifest
    @class_name      = ARGV[0].camelize
    @class_file_name = ARGV[0].underscore

    record do |m|
      # js class
      m.template "javascripts/class.js", "public/javascripts/#{class_file_name}.js"
    
      # create testing prerequisites
      m.directory "public/javascripts/test/lib"
      m.directory "public/javascripts/test/unit"
      
      m.file "javascripts/test/lib/test.css",        "public/javascripts/test/lib/test.css"
      m.file "javascripts/test/lib/unittest.js",     "public/javascripts/test/lib/unittest.js"
      m.file "javascripts/test/run_unit_tests.html", "public/javascripts/test/run_unit_tests.html"
      
      # test harness
      m.template "javascripts/test/unit/class_test.html", "public/javascripts/test/unit/#{class_file_name}_test.html"
      m.file     "javascripts/test/unit/index.html",      "public/javascripts/test/unit/index.html", :collision => :skip
      m.add_test_to_suite class_file_name, class_name
    end
  end
  
end