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wechat_pay

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WechatPay API wrapper in Elixir

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wechat_pay lib wechat_pay utils nonce_str.ex
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lib/wechat_pay/utils/nonce_str.ex 

defmodule WechatPay.Utils.NonceStr do

  @moduledoc """

  Module to generate nonce string value

  """



  @doc """

  Generate a 32 length nonce string



  ## Example



  ```elixir

  iex> WechatPay.Utils.NonceStr.generate()

  ...> "dzhGXJ8zotL1LYkqnjnDSX9Cw0S2vV0"

  ```

  """

  @spec generate() :: String.t()

  def generate do

    length = 31



    length

    |> :crypto.strong_rand_bytes()

    |> Base.url_encode64()

    |> binary_part(0, length)

  end

end