class TestController < ApplicationController

  def zip
    homeworks_attach_path = []
    homework_id = params[:homework_id]
    bid = Bid.find_by_id(homework_id)

    bid.homeworks.each do |homeattach|
      homeattach.attachments.each do |attach|
        length = attach.storage_path.length
        homeworks_attach_path << attach.diskfile.to_s.slice((length+1)..-1)
      end
    end
    @paths = homeworks_attach_path
    zipfile = ziping homeworks_attach_path
    send_file zipfile, :filename => bid.name,
                        :type => detect_content_type(zipfile)
    rescue Errno::ENOENT => e
      logger.error "[Errno::ENOENT] ===> #{e}"

  end

  def courselist
    @courses = Project.course_entities
  end

  def ziping files_path
    ic = Iconv.new('GBK//IGNORE', 'UTF-8//IGNORE')
    folder = "#{Rails.root}/files"
    input_filename = files_path
    zipfile_name = "#{Rails.root}/tmp/archiveZip/archive_#{Time.now.to_i}.zip"
    
    Dir.mkdir(File.dirname(zipfile_name)) unless File.exist?(File.dirname(zipfile_name))
    Zip::File.open(zipfile_name, Zip::File::CREATE) do |zipfile|
      input_filename.each do |filename|
        zipfile.add(ic.iconv(filename_to_real(File.basename(filename))), folder + '/' + filename)
      end
      zipfile.get_output_stream("ReadMe"){ |os|
        os.write "Homeworks"
      }
    end
    zipfile_name
  end

  def detect_content_type(name)
    content_type = Redmine::MimeType.of(name)
    content_type.to_s
  end
  
  def filename_to_real name
    attach = Attachment.find_by_disk_filename(name)
    attach.filename
  end


end