#!/usr/bin/env python
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# ola_rdm_discover.py
# Copyright (C) 2010 Simon Newton

'''Show the UIDs for a universe.'''

from __future__ import print_function
import getopt
import textwrap
import sys
from ola.ClientWrapper import ClientWrapper

__author__ = 'nomis52@gmail.com (Simon Newton)'


def Usage():
  print(textwrap.dedent("""\
  Usage: ola_rdm_discover.py --universe <universe> [--full]

  Fetch the UID list for a universe.

    -h, --help                Display this help message and exit.
    -f, --full                Full RDM Discovery for this universe.
    -i, --incremental         Incremental RDM Discovery for this universe.
    -u, --universe <universe> Universe number."""))


def main():
  try:
      opts, args = getopt.getopt(sys.argv[1:], 'fjiu:',
                                 ['help', 'full', 'incremental', 'universe='])
  except getopt.GetoptError as err:
    print(str(err))
    Usage()
    sys.exit(2)

  universe = None
  full_discovery = False
  incremental_discovery = False

  for o, a in opts:
    if o in ('-h', '--help'):
      Usage()
      sys.exit()
    elif o in ('-f', '--full'):
      full_discovery = True
    elif o in ('-i', '--incremental'):
      incremental_discovery = True
    elif o in ('-u', '--universe'):
      universe = int(a)

  if universe is None:
    Usage()
    sys.exit()

  if incremental_discovery and full_discovery:
    print('Only one of --incremental or --full can be specified')
    sys.exit()

  wrapper = ClientWrapper()
  client = wrapper.Client()

  def show_uids(state, uids):
    if state.Succeeded():
      for uid in uids:
        print(str(uid))
    else:
      print('Error: %s' % state.message, file=sys.stderr)
    wrapper.Stop()

  if full_discovery:
    client.RunRDMDiscovery(universe, True, show_uids)
  elif incremental_discovery:
    client.RunRDMDiscovery(universe, False, show_uids)
  else:
    client.FetchUIDList(universe, show_uids)
  wrapper.Run()


if __name__ == '__main__':
  main()
