wechat_pay

defmodule WechatPay.Helper do
  @moduledoc false

  alias WechatPay.API.Client

  @doc """
  Fetch the Sandbox API Key

  where the `apikey` and `mch_id` is the **production** values.

  ## Example

  ```elixir
  iex> WechatPay.Helper.get_sandbox_signkey("wx8888888888888888", "1900000109")
  ...> {:ok, "the-key"}
  ```
  """
  @spec get_sandbox_signkey(
          String.t(),
          String.t()
        ) :: {:ok, String.t()} | {:error, WechatPay.Error.t() | HTTPoison.Error.t()}
  def get_sandbox_signkey(apikey, mch_id) do
    case Client.get_sandbox_signkey(apikey, mch_id) do
      {:ok, %{sandbox_signkey: signkey}} ->
        {:ok, signkey}

      err ->
        err
    end
  end
end