# Copyright 2024 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
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# T6409: Remove unused 'backend bk-example parameters' node

from vyos.configtree import ConfigTree

base = ['load-balancing', 'reverse-proxy', 'backend']

def migrate(config: ConfigTree) -> None:
    if not config.exists(base):
        # Nothing to do
        return

    # we need to run this for every configured network
    for backend in config.list_nodes(base):
        param_node = base + [backend, 'parameters']
        if config.exists(param_node):
            config.delete(param_node)