# Copyright 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/>.

# T6011: rpki: known-hosts-file is no longer supported bxy FRR CLI,
#        remove VyOS CLI node

from vyos.configtree import ConfigTree
from vyos.pki import OPENSSH_KEY_BEGIN
from vyos.pki import OPENSSH_KEY_END
from vyos.utils.file import read_file

base = ['protocols', 'rpki']

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

    if config.exists(base + ['cache']):
        for cache in config.list_nodes(base + ['cache']):
            ssh_node = base + ['cache', cache, 'ssh']
            if config.exists(ssh_node + ['known-hosts-file']):
                config.delete(ssh_node + ['known-hosts-file'])

            if config.exists(base + ['cache', cache, 'ssh']):
                private_key_node = base + ['cache', cache, 'ssh', 'private-key-file']
                private_key_file = config.return_value(private_key_node)
                private_key = read_file(private_key_file).replace(OPENSSH_KEY_BEGIN, '').replace(OPENSSH_KEY_END, '').replace('\n','')

                public_key_node = base + ['cache', cache, 'ssh', 'public-key-file']
                public_key_file = config.return_value(public_key_node)
                public_key = read_file(public_key_file).split()

                config.set(['pki', 'openssh', f'rpki-{cache}', 'private', 'key'], value=private_key)
                config.set(['pki', 'openssh', f'rpki-{cache}', 'public', 'key'], value=public_key[1])
                config.set(['pki', 'openssh', f'rpki-{cache}', 'public', 'type'], value=public_key[0])
                config.set_tag(['pki', 'openssh'])
                config.set(ssh_node + ['key'], value=f'rpki-{cache}')

                config.delete(private_key_node)
                config.delete(public_key_node)