# 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/>.

# T7664:
#   FRR 10.5 doesn't have ip protocols:
#   - connected
#   - kernel
#   - table
#
#   Remove them from
#   - vrf name VRF ip protocol
#   - vrf name VRF ipv6 protocol

from vyos.configtree import ConfigTree

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

base = ['vrf', 'name']

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

    for vrf in config.list_nodes(base):
        for subbase in subbases:
            protocol_base = base + [vrf] + subbase

            if not config.exists(protocol_base):
                continue

            for protocol in remove_ip_protocols:
                if config.exists(protocol_base + [protocol]):
                    config.delete(protocol_base + [protocol])