#!/usr/bin/env python3
# Copyright 2019 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

from __future__ import print_function

import sys

import dbus
import flimflam

flim = flimflam.FlimFlam(dbus.SystemBus())

if len(sys.argv) == 2 and sys.argv[1] == '--list':
    print('[%s]' % flim.ListDebugTags())
else:
    taglist = flim.GetDebugTags()
    if len(sys.argv) < 2:
        if taglist:
            print('[%s]' % taglist)
        else:
            print('No debug tags are enabled')
    else:
        if sys.argv[1].startswith('+'):
            newtaglist = taglist
            if newtaglist:
                newtaglist += sys.argv[1]
            else:
                newtaglist = sys.argv[1].lstrip('+')
        elif sys.argv[1].startswith('-'):
            curr_tagset = set(taglist.split('+'))
            tagset_to_remove = set(sys.argv[1].lstrip('-').split('+'))
            newtaglist = '+'.join(curr_tagset - tagset_to_remove)
        else:
            newtaglist = sys.argv[1]
        flim.SetDebugTags(newtaglist)
        print('tag list was [%s], now is [%s]' %
              (taglist, flim.GetDebugTags()))