# Copyright (C) 2024-2025 VyOS maintainers and contributors
#
# 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/>.

# From
#   set firewall global-options apply-to-bridged-traffic invalid-connections
# To
#   set firewall global-options apply-to-bridged-traffic accept-invalid ethernet-type <ethertype>

from vyos.configtree import ConfigTree

base = ['firewall', 'global-options', 'apply-to-bridged-traffic']

def migrate(config: ConfigTree) -> None:
    if not config.exists(base + ['invalid-connections']):
        # Nothing to do
        return

    ether_types = ['dhcp', 'arp', 'pppoe-discovery', 'pppoe', '802.1q', '802.1ad', 'wol']

    for ether_type in ether_types:
        config.set(base + ['accept-invalid', 'ethernet-type'], value=ether_type, replace=False)

    config.delete(base + ['invalid-connections'])