# Copyright 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.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library.  If not, see <http://www.gnu.org/licenses/>.

# T7644:
#   FRR 10.5 doesn't have ip protocols:
#   - connected
#   - kernel
#   - table
#
#   Remove them from
#   - system ip protocol
#   - system ipv6 protocol

from vyos.configtree import ConfigTree

bases = [
    ['system', 'ip', 'protocol'],
    ['system', 'ipv6', 'protocol'],
]
remove_ip_protocols = ['connected', 'kernel', 'table']

def migrate(config: ConfigTree) -> None:
    for base in bases:
        if not config.exists(base):
            continue

        # Iterate over all ip protocols to remove
        for protocol in remove_ip_protocols:
            if config.exists(base + [protocol]):
                config.delete(base + [protocol])