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# Copyright (C) 2024 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 zone <zone> interface <iface>
# To
    # set firewall zone <zone> interface name <iface>
    # or
    # set firewall zone <zone> interface vrf <vrf>


from vyos.configtree import ConfigTree

base = ['firewall', 'zone']

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

    for zone in config.list_nodes(base):
        if config.exists(base + [zone, 'interface']):
            for iface in config.return_values(base + [zone, 'interface']):
                config.set(base + [zone, 'interface', 'name'], value=iface, replace=False)