# Copyright 2021-2024 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.
#
# 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 vyos.configtree import ConfigTree

base = ['protocols', 'rpki']

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

    if config.exists(base + ['cache']):
        preference = 1
        for cache in config.list_nodes(base + ['cache']):
            address_node = base + ['cache', cache, 'address']
            if config.exists(address_node):
                address = config.return_value(address_node)
                # We do not longer support the address leafNode, RPKI cache server
                # IP address is now used from the tagNode
                config.delete(address_node)
                # VyOS 1.2 had no per instance preference, setting new defaults
                config.set(base + ['cache', cache, 'preference'], value=preference)
                # Increase preference for the next caching peer - actually VyOS 1.2
                # supported only one but better save then sorry (T3253)
                preference += 1

                # T3293: If the RPKI cache name equals the configured address,
                # renaming is not possible, as rename expects the new path to not
                # exist.
                if not config.exists(base + ['cache', address]):
                    config.rename(base + ['cache', cache], address)