helper.ex

defmodule Wework.Helper do
  
  def parameterize(string) do
    string
    |> String.downcase
    |> String.replace(~r/[^\w-]+/, "-")
    |> String.replace(~r/-{2,}/, "-")
    |> String.trim("-")
  end

  @default_length 4

  def random_base32(length \\ @default_length) do
    random_bytes(length)
    |> Base.encode32(case: :lower)
    |> String.slice(0..length - 1)
  end

  defp random_bytes(n \\ @default_length) do
    :crypto.strong_rand_bytes(n)
  end
end