imascg.rb

# -*- encoding: utf-8 -*-

require 'nkf'

class Idol
  attr_reader :name

  def initialize(name)
    @name = NKF::nkf('-wxZ4', name) # zenkaku to hankaku
    @nicknames = {}
    insert_nicknames({
      'しぶりん'   => '渋谷凛',
      'うずりん'   => '島村卯月',
      'ニート'     => '双葉杏',
      'さっちゃん' => '輿水幸子'
    })
  end

  def insert_nickname(nickname, name)
    @nicknames[NKF::nkf('-wxZ4', nickname)] = name
  end

  def insert_nicknames(d)
    d.map do |k,v|
      insert_nickname(k,v)
    end
  end

  def request_name
    @nicknames[split_rarity] ? @nicknames[split_rarity] : split_rarity
  end

  def plus?
    /[+]$/ =~ @name
  end

  def split_plus
    plus? ? @name[0...-1] : @name
  end

  def split_rarity
    split_plus.match(/(\W+)\w*/)[1]
  end

  def rarity
    rarity = 
      case split_plus.match(/\W+(\w*)/)[1]
      when 'SR'; 'SR'
      when 'R'; 'R'
      when 'N'; 'N'
      else 'U' #unknown or nothing
      end
    plus? ? rarity + '+' : rarity
  end

end



idol = Idol.new('しぶりんＲ＋')
p idol.request_name, idol.rarity

idol = Idol.new('しぶりんR+')
p idol.request_name, idol.rarity

idol = Idol.new('ニートR+')
p idol.request_name, idol.rarity

idol = Idol.new('ﾆｰﾄR+')
p idol.request_name, idol.rarity

idol = Idol.new('さっちゃんSR')
p idol.request_name, idol.rarity

idol = Idol.new('[ﾋﾟｭｱﾊﾞﾚﾝﾀｲﾝ]渋谷凛+')
p idol.request_name, idol.rarity