#!/usr/bin/python

# Copyright (c) 2009, Purdue University
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"""Remove zone, view, dns server, dns server set tool for dnsmanagement"""


__copyright__ = 'Copyright (C) 2009, Purdue University'
__license__ = 'BSD'
__version__ = '0.5'


import os
import sys
import getpass

from optparse import OptionParser

from roster_user_tools import cli_common_lib
from roster_user_tools import roster_client_lib


def main(args):
  """Collects command line arguments.

  Inputs:
    args: list of arguments from the command line
  """
  parser = OptionParser()

  parser.add_option('-v', '--view', action='store', dest='view',
                    help='Modify a view.', default=None)
  parser.add_option('-z', '--zone', action='store', dest='zone',
                    help='Modify a zone.', default=None)
  parser.add_option('-s', '--server', action='store', dest='server',
                    help='XML RPC Server URL.', metavar='<server>',
                    default='https://localhost:8000')
  parser.add_option('-u', '--username', action='store', dest='username',
                    help='Run as a different username.', metavar='<username>',
                    default=unicode(getpass.getuser()))
  parser.add_option('-p', '--password', action='store', dest='password',
                    help='Password string, NOTE: It is insecure to use this '
                         'flag on the command line.', metavar='<password>',
                    default=None)
  parser.add_option('-c', '--cred-file', action='store', dest='credfile',
                    help='Location of credential file.', metavar='<cred-file>',
                    default=os.path.join(os.path.expanduser('~'), '.dnscred'))
  parser.add_option('-l', '--list', action='store_true', dest='list',
                    help='List only and make no changes.', default=False)
  parser.add_option('--cred-string', action='store', dest='credstring',
                    help='String of credential.', metavar='<cred-string>',
                    default=None)
  parser.add_option('-q', '--quiet', action='store_true', dest='quiet',
                    help='Suppress program output.', default=False)

  (globals()["options"], args) = parser.parse_args(args)

  cli_common_lib.CheckCredentials(options)

  if( options.zone ):
    cli_common_lib.DisallowFlags([u'view', u'cidr_block'], parser, options)
    core_return = roster_client_lib.RunFunction(
        u'RemoveZone', options.username, credfile=options.credfile,
        credstring=options.credstring, server_name=options.server,
        args=[options.zone], kwargs={'view_name': options.view})['core_return']
    if( not options.quiet and core_return ):
      view = options.view
      if( not options.view ):
        view = u'any'
      print 'REMOVED ZONE: zone_name: %s view_name: %s' % (
          options.zone, view)
    elif( not core_return ):
      cli_common_lib.DnsError('Zone "%s" does not exist.' % options.zone, 1)
  else:
    parser.print_help()
    cli_common_lib.DnsError('Must specify a flag.', 1)

if __name__ == "__main__":
  main(sys.argv[1:])
