List Calendars in Nextcloud Calendar

import caldav

import base64

# You can import any PyPi package.

# See here for more info: https://www.windmill.dev/docs/advanced/dependencies_in_python

# you can use typed resources by doing a type alias to dict

nextcloud = dict

def main(NextcloudResource: nextcloud, userId: str, useAppApiAuth: bool = False):

    if useAppApiAuth:

        headers = {

            "AA-VERSION": "2.3.0",

            "EX-APP-ID": "flow",

            "EX-APP-VERSION": "1.0.0",

            "AUTHORIZATION-APP-API": base64.b64encode(

              f"{userId}:{NextcloudResource['password']}".encode('utf-8')).decode('utf-8'),

          }

    else:

        headers = {}

    with caldav.DAVClient(

        url=NextcloudResource['baseUrl'] + '/remote.php/dav/calendars/'+userId+'/',

        username=userId,

        password=NextcloudResource['password'],

        headers=headers,

    ) as client:

        my_principal = client.principal()

        return my_principal.calendars()