module RSpec::Rails
  module Helper   
    include RSpec::Rails::App
        
    def create_helper name, content=nil
      file =  helper_file_name(name)
      unless File.exist?(file)    
        FileUtils.mkdir_p File.dirname(file)
        content ||= yield if block_given?
        File.open(file, 'w') do |f|  
          f.puts helper_content(name, content)
        end
      end
    end  

    def helper_content name, content=nil
      %Q{class #{name.to_s.camelize}Helper
  #{content}
end}        
    end

    def remove_helper name
      file = helper_file_name(name)
      FileUtils.rm_f(file) if File.exist?(file)
    end

    def remove_helpers *names
      names.each{|name| remove_helper name }
    end
    
    protected
    
    def helper_file_name name
      File.join(helper_dir, "#{name}_helper.rb")
    end        
    
  end
end