defmodule ExWechat.Util do
  @moduledoc """
    some utils
  """


  @doc """
    parse response's body
  """
  def parse_resp({:ok, resp}), do: resp |> parse_resp
  def parse_resp(resp),        do: resp.body |> Poison.decode


  @doc """
    validate wechat's repsonse
  """
  def check_wechat_resp({:ok, %{"errcode" => 0}}),
    do: :ok
  def check_wechat_resp({:ok, %{"errcode" => _} = error}),
    do: {:error, error}
  def check_wechat_resp(msg),
    do: msg


  def content_type(:json), do: {"Content-Type", "application/json"}

  def now, do: Timex.Duration.now |> Timex.Duration.to_seconds
end