module Templates
  class TemplatesController < ApplicationController
    unloadable

    def index
      render :json => collect_templates
    end

    def mtime
      render :text => last_modify
    end

  protected

    def collect_templates

      app_templates = { :mtime => last_modify }

      Dir.new("#{Rails.root}/app/controllers").entries.each do |controller_file_name|

        if controller_file_name =~ /_controller/
          controller_name = controller_file_name.camelize.gsub('.rb', '')

          controller = controller_name.constantize
          templates_hash = {}

          unless controller.templates_options.nil?

            if controller.templates_options[:layout]
              templates_hash[:layout] = render_to_string(:file => "layouts/#{controller.controller_name}", :layout => false)
            end

            if controller.templates_options[:partials].count > 0

              templates_hash[:partials] = {}

              controller.templates_options[:partials].each do |partial|
                templates_hash[:partials][partial] = render_to_string(:file => "#{controller.controller_name}/_#{partial}", :layout => false)
              end
            end

          end

          if not controller.templates_list.nil? and controller.templates_list.count > 0

            templates_hash[:templates] = {}

            controller.templates_list.each do |template|
              templates_hash[:templates][template] = render_to_string(:file => "#{controller.controller_name}/#{template}", :layout => false)
            end
          end

          app_templates[controller.controller_name] = templates_hash unless templates_hash.empty?
        end
      end

      app_templates
    end

    def last_modify
      # Watched files (and dirs) list
      watched_files = %w[
        app/views
        app/helpers
        config/locales
        config/routes.rb
      ].map { |f| [Rails.root, f].join('/') }

      stat_flags = if RUBY_PLATFORM =~ /darwin/
        # Mac OS X
        '-f %m'
      else
        # Linux (it may work on Windows, but in fact I'm really don't care about this crap)
        '--format=%Y'
      end
      `stat #{stat_flags} $(ls -t $(find #{ watched_files.join(' ') } -type f) | head -n 1)`.strip
    end

  end
end