defmodule App.UploadManager.Behavior do

  @doc """
  Check if file exists
  """
  @callback exists?(String.t) :: :ok | {:error, String.t}

  @doc """
  Save file
  """
  @callback save!(String.t, String.t, Map) :: :ok | {:error, String.t}

  @doc """
  Delete file
  """
  @callback delete!(String.t) :: :ok | {:error, String.t}

  @doc """
  Return URL to file
  """
  @callback url(String.t) :: String.t

end