# This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.
import base64
import typing
from urllib.parse import quote, urlencode
def _generate_uri(
hotp,
type_name: str,
account_name: str,
issuer: typing.Optional[str],
extra_parameters,
) -> str:
parameters = [
("digits", hotp._length),
("secret", base64.b32encode(hotp._key)),
("algorithm", hotp._algorithm.name.upper()),
]
if issuer is not None:
parameters.append(("issuer", issuer))
parameters.extend(extra_parameters)
uriparts = {
"type": type_name,
"label": (
"%s:%s" % (quote(issuer), quote(account_name))
if issuer
else quote(account_name)
),
"parameters": urlencode(parameters),
}
return "otpauth://{type}/{label}?{parameters}".format(**uriparts)