caesar-cipher for the odin project

caesar-cipher.rb

require "pry-byebug"

def caesar_cipher(string_text, num)
  content_split = string_text.downcase.split("")

  content_ascii = []
  content_split.each do |target|
    target.each_byte { |char| content_ascii << char }
  end

  ascii_plus = []
  content_ascii.each do |target|
    if target == 32 || target == 33
      ascii_plus << target
    else
      if target + num > 122
        target = target + num
        min = target - 123
        target = 97 + min
        ascii_plus << target
      else
        ascii_plus << target + num
      end
    end
  end
  whole_array = ascii_plus.map { |c| c.chr }
  whole_string = whole_array.join("")
  whole_string[0] = whole_string[0].upcase
  whole_string
end

puts caesar_cipher("What a string!", 5)