class QuizController < ApplicationController
   Results='quizresults/'
  def first_time
    if pa=params[:id]
	    session[:mcfile]=pa
    else
	    session[:mcfile]=nil
    end
    session[:displayed]=''
    session[:correct]=session[:wrong]=0
    session[:choices]=nil
    what_next
  end
  def filechoices?
    false
  end
  def start_choices
		quizfolder=get_quiz_dir
		session[:showpic]=nil
    if session[:mcfile]
      lines=get_page(quizfolder,
	      session[:mcfile],	get_question_no)
      lines.delete_if do |l|
	if l =~ /(JPG|JPEG|GIF|PNG)$/i
		session[:showpic]=l
	else
		false
	end
      end
      if lines.size > 2
	session[:displayed] = lines.shift
	session[:correct_answer]=lines.shift
	lines.insert(rand(lines.size+1),
		session[:correct_answer])
      else
	fn=Results+get_user+'.txt'
	begin
		st=IO.read(fn).split('~').last
		session[:displayed]=st.gsub(/,.*\n/,' </br>')
	rescue
		session[:displayed]=''
	end
	session[:mcfile]=nil
	session[:question_no]=0
	["correct #{get_correct}",
	"wrong #{get_wrong}"]
      end
    else
			quizfolder=get_quiz_dir
			get_textfile_list quizfolder
    end
  end
  def selected(str)
    if session[:mcfile]
      if str == get_correct_answer
	session[:correct] = get_correct+1
	logger.info "#{get_question_no+1}.correct: #{str}"
      else
	session[:wrong]=get_wrong+1
	logger.info "#{get_question_no+1}.wrong: #{str}"
	fn=Results+get_user+'.txt'
	begin
		open(fn, 'a') { |f| f.puts "#{get_displayed}: #{get_correct_answer}, not #{str}"}
	rescue
		logger.info "unable to write to #{fn}"
	end
      end
      session[:question_no]=get_question_no+1
    else
      session[:mcfile]=str
      session[:question_no]=0
      r=Results.chop
      Dir.mkdir(r) unless File.directory?(r)
      fn=Results+get_user+'.txt'
      begin
	      open(fn,'w'){} unless File.exist? fn
	      open(fn, 'a') { |f| f.puts "quiz #{session[:mcfile]} starts #{Time.now}~" }
      rescue
	      logger.info "unable to write to #{fn}"
      end
    end
    session[:start_choices]=nil
  end
	def extras
		if !session[:mcfile]
			@title='pick a quiz'
		else
			@title="question number #{get_question_no+1
			} of #{session[:mcfile]}"
		end
		@displayed=get_displayed
		@pic=session[:showpic]
  end
	def get_correct
		session[:correct] ||=0
   end
   def get_wrong
		session[:wrong] ||= 0
   end
   def designers
        'Co-Designer:<a href

="http://www.harshshridhar.wordpress.com/">Harshendu
            Shridhar</a>'
   end


end