class ChoicesController < RecognizeController
  def get_lines
		get_page(get_quiz_dir,
             session[:mcfile],	get_question_no)
  end
  def displaypic
    session[:pictures]
  end
  def get_question
    session[:question] || ''
  end
  def start_choices
    session[:pictures]=nil
    not_processed=true
		lines=[]
    while not_processed
      if session[:mcfile] && (lines= get_lines).size > 2
				lines.delete_if do |l|
					if l =~ /(JPG|JPEG|GIF|PNG)$/i
						session[:pictures]=l
					else
						false
					end
				end
				session[:question] = lines.shift
				session[:answer]=lines.shift
				lines.insert(rand(lines.size+1),
								session[:answer])
				lognewproblem(session[:question], session[:answer])
				not_processed=false
      else
				session[:mcfile]=nil
				session[:question_no]=0
				session[:question]=nil
				session[:answer]=session[:displayed]=nil
				lines=get_textfile_list get_quiz_dir
				#if there is only a single quiz file, use it
				if lines.size == 1
					session[:mcfile]=lines.shift
					teacherlog "working with #{session[:mcfile]}"
				else
					not_processed=false
				end
      end      
    end
    lines
  end
  def preprocessing str
		if get_textfile_list(get_quiz_dir).find_index str
      session[:mcfile]=str
			teacherlog "working with #{session[:mcfile]}"
			                                   end
  end

end