require_relative 'question.rb'


current_path = File.dirname(__FILE__)
file_name = current_path + '/questions.xml'

file = File.new(file_name, 'r:utf-8')
questions = Questions.read_question_xml(file)
file.close

right_answers_counter = 0

puts "\nВикторина v2.1\n"
sleep(1)

questions.each do |question_data|
  question = Questions.new(question_data)
  question.ask_question
  right_answers_counter += question.check_answer
end

puts "\nУ Вас #{right_answers_counter} правильных ответов"


require 'rexml/document'

class Questions

  def self.read_question_xml(xml_file)
    doc = REXML::Document.new(xml_file)

    questions = []

    doc.elements.each('questions/question') do |questions_element|

      question_data = {time: "#{questions_element.attributes['seconds'].to_f}"}

      variants = []

      questions_element.elements.each do |question_element|
        case question_element.name
        when 'text' then question_data[:text] = question_element.text
        when 'variants'
          question_element.elements.each_with_index do |variant, index|
            variants << variant.text
            question_data[:right_answer_index] = index + 1 if variant.attributes['right']
          end
          question_data[:variants] = variants
        end
      end

      questions << question_data

    end
    return questions
  end


  def initialize(question_data)
    @question_data = question_data
  end


  def ask_question
    @time_for_question = @question_data[:time].to_f

    puts "\nВремя на ответ: #{@time_for_question} сек."
    puts '3'
    sleep(1)
    puts '2'
    sleep(1)
    puts '1'
    sleep(1)

    @start_time = Time.now

    puts @question_data[:text]

    @question_data[:variants].each_with_index do |variant, index|
      puts "#{index+1}. #{variant}"
    end

    take_user_input

    @end_time = Time.now
  end


  def take_user_input
    @user_input = STDIN.gets.chomp
  end


  def check_answer
    if @user_input == @question_data[:right_answer_index].to_s
      if @time_for_question >= @end_time - @start_time
        puts 'Верно!'
        return 1
      else
        puts 'Вы не уложились в отведенное для ответа время.'
        return 0
      end
    else
      puts 'Неправильный ответ!'
      return 0
    end
  end

end