lovelive_quiz.rb

#!/usr/bin/env ruby

require "json"
require "open-uri"

class LoveLiveQuiz
  API_URL = 'https://lovelive-quiz-api.herokuapp.com/quiz'

  def initialize
    fetch
  end

  def type
    @quiz['type']
  end

  def format_quiz
    __send__ :"format_quiz_#{type}"
  end

  def print_quiz
    STDOUT.print format_quiz
  end

  def format_answer
    '答え: ' + __send__(:"format_answer_#{type}")
  end

  def print_answer
    STDOUT.print format_answer
  end

  private

  def format_quiz_choice
    choices = @quiz['choices'].map {|c| c['text']}.map.with_index {|t, i| "#{i + 1}. #{t}"}.join ', '
    "#{@quiz['body']}\n#{choices}"
  end

  def format_quiz_ranking
    members = @quiz['choices'].map {|c| c['name'] }.join ', '
    "#{@quiz['body']}\n#{members}"
  end

  def format_answer_choice
    index = @quiz['choices'].index {|c| c['correct'] }
    "#{index + 1}. #{@quiz['choices'][index]['text']}"
  end

  def format_answer_ranking
    @quiz['choices'].sort_by {|c| c['rank'] }.map {|c| c['name'] }.join ', '
  end

  def fetch
    @quiz = JSON.parse open(API_URL).read
    @quiz['choices'].sort_by! { rand } if type == 'ranking'
  end
end

quiz = LoveLiveQuiz.new

(1..5).to_a.reverse.each do |i|
  system "clear"
  quiz.print_quiz
  puts
  puts "[#{i}]"
  sleep 1
end

system "clear"
quiz.print_quiz
puts
quiz.print_answer
puts