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lib/utils/random_id.ex
defmodule Pixie.Utils.RandomId do
@id_length 32
@alphabet ~w|
a b c d e f g h i j k l m n o p q r s t u v w x y z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
0 1 2 3 4 5 6 7 8 9
|
def generate, do: generate @id_length
def generate id_length do
generate_random_string "", id_length
end
defp generate_random_string string, 0 do
string
end
defp generate_random_string string, remaining do
string = string <> generate_random_character
generate_random_string string, remaining - 1
end
defp generate_random_character do
alphabet = @alphabet
pos = :crypto.rand_uniform(0, Enum.count(alphabet))
Enum.at alphabet, pos
end
end