#!/usr/bin/env python3

# Change smp_affinity to smp-affinity

import sys

from vyos.configtree import ConfigTree

if (len(sys.argv) < 1):
    print("Must specify file name!")
    sys.exit(1)

file_name = sys.argv[1]

with open(file_name, 'r') as f:
    config_file = f.read()

config = ConfigTree(config_file)

update_required = False

intf_types = config.list_nodes(["interfaces"])

for intf_type in intf_types:
    intf_type_path = ["interfaces", intf_type]
    intfs = config.list_nodes(intf_type_path)

    for intf in intfs:
        intf_path = intf_type_path + [intf]
        if not config.exists(intf_path + ["smp_affinity"]):
            # Nothing to do.
            continue
        else:
            # Rename the node.
            old_smp_affinity_path = intf_path + ["smp_affinity"]
            config.rename(old_smp_affinity_path, "smp-affinity")
            update_required = True

if update_required:
    try:
        with open(file_name, 'w') as f:
            f.write(config.to_string())
    except OSError as e:
        print("failed to save the modified config: {}".format(e))
        sys.exit(1)