+
+ @spec fetch_integer_param(map(), String.t(), integer() | nil) :: integer() | nil
+ def fetch_integer_param(params, name, default \\ nil) do
+ params
+ |> Map.get(name, default)
+ |> param_to_integer(default)
+ end
+
+ defp param_to_integer(val, _) when is_integer(val), do: val
+
+ defp param_to_integer(val, default) when is_binary(val) do
+ case Integer.parse(val) do
+ {res, _} -> res
+ _ -> default
+ end
+ end
+
+ defp param_to_integer(_, default), do: default