Module: Dubs::Token

Defined in:
lib/dubs/token.rb

Constant Summary collapse

HEX_CHARS = 
("0".."9").to_a + ("a".."f").to_a
ALPHA_CHARS = 
("a".."z").to_a + ("0".."9").to_a

Class Method Summary collapse

Class Method Details

.generate(type: :numeric, length: 4, token_case: :lower, seed: nil) ⇒ Object 



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# File 'lib/dubs/token.rb', line 12

def generate(type: :numeric, length: 4, token_case: :lower, seed: nil)
  return "" if type.to_sym == :none || length <= 0

  raw = case type.to_sym
  when :hex
    if seed
      seeded_chars(HEX_CHARS, length, seed)
    else
      SecureRandom.hex(length)[0, length]
    end
  when :numeric
    if seed
      seeded_numeric(length, seed)
    else
      SecureRandom.random_number(10**length).to_s.rjust(length, "0")
    end
  when :alpha
    if seed
      seeded_chars(ALPHA_CHARS, length, seed)
    else
      Array.new(length) { ALPHA_CHARS.sample }.join
    end
  else
    raise Error, "Unknown token type: #{type}. Use :hex, :numeric, :alpha, or :none"
  end

  token_case.to_sym == :upper ? raw.upcase : raw.downcase
end