Horoscopes

horoscopes.rb

# -*- coding: utf-8 -*-

require 'date'

module Horoscopes
  CONSTELLATIONS = [
    :capricorn,
    :aquarius,
    :pisces,
    :aries,
    :taurus,
    :gemini,
    :cancer,
    :leo,
    :virgo,
    :libra,
    :scorpius,
    :sagittarius,
  ]

  def self.astrology(date)
    i = date.strftime('%m%d').to_i
    return CONSTELLATIONS[ 0] if i <=  120
    return CONSTELLATIONS[ 1] if i <=  218
    return CONSTELLATIONS[ 2] if i <=  320
    return CONSTELLATIONS[ 3] if i <=  419
    return CONSTELLATIONS[ 4] if i <=  520
    return CONSTELLATIONS[ 5] if i <=  621
    return CONSTELLATIONS[ 6] if i <=  722
    return CONSTELLATIONS[ 7] if i <=  823
    return CONSTELLATIONS[ 8] if i <=  922
    return CONSTELLATIONS[ 9] if i <= 1023
    return CONSTELLATIONS[10] if i <= 1122
    return CONSTELLATIONS[11] if i <= 1221
    return CONSTELLATIONS[ 0] if i <= 1231
    raise 'must not happen'
  end

  def self.horoscopes(date = Date.today)
    CONSTELLATIONS.shuffle(random: Random.new(date.strftime('%Y%m%d').to_i))
  end
end

japanese = {
 capricorn:   'やぎ座',
 aquarius:    'みずがめ座',
 pisces:      'うお座',
 aries:       'おひつじ座',
 taurus:      'おうし座',
 gemini:      'ふたご座',
 cancer:      'かに座',
 leo:         'しし座',
 virgo:       'おとめ座',
 libra:       'てんびん座',
 scorpius:    'さそり座',
 sagittarius: 'いて座',
}

d = Date.today
h = Horoscopes.horoscopes
a = Horoscopes.astrology(d)

p h, d, a, japanese[a], h.find_index {|_| _ == a } + 1