#!/usr/bin/python2
# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2015 Lenovo
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import optparse
import os
import signal
import sys

try:
    signal.signal(signal.SIGPIPE, signal.SIG_DFL)
except AttributeError:
    pass
path = os.path.dirname(os.path.realpath(__file__))
path = os.path.realpath(os.path.join(path, '..', 'lib', 'python'))
if path.startswith('/opt'):
    sys.path.append(path)

import confluent.client as client

argparser = optparse.OptionParser()
argparser.add_option('-b', '--bios', dest='biosmode',
                     action='store_true', default=False,
                     help='Request BIOS style boot (rather than UEFI)')
argparser.add_option('-u', '--uefi', dest='uefimode',
                     action='store_true', default=False,
                     help='Request UEFI style boot (rather than BIOS)')
argparser.add_option('-p', '--persist', dest='persist', action='store_true',
                     default=False,
                     help='Request the boot device be persistent rather than '
                          'one time')
argparser.add_option('-m', '--maxnodes', type='int',
                     help='Specify a maximum number of '
                          'nodes to boot, '
                          'prompting if over the threshold')                        

(options, args) = argparser.parse_args()

try:
    noderange = args[0]
except IndexError:
    sys.stderr.write(
        'Usage: {0} <noderange> [default|cd|network|setup|hd]\n'.format(
            sys.argv[0]))
    sys.exit(1)
client.check_globbing(noderange)
bootdev = None
if len(sys.argv) > 2:
    bootdev = sys.argv[2]
    if bootdev in ('net', 'pxe'):
        bootdev = 'network'
session = client.Command()
exitcode = 0
if options.biosmode:
    bootmode = 'bios'
else:
    bootmode = 'uefi'

errnodes = set([])
session.stop_if_noderange_over(noderange, options.maxnodes)
rc = session.simple_noderange_command(noderange, '/boot/nextdevice', bootdev,
                                     bootmode=bootmode,
                                     persistent=options.persist,
                                     errnodes=errnodes)
if errnodes:
    noderange = noderange + ',-(' + ','.join(errnodes) + ')'
rc |= session.simple_noderange_command(noderange, '/power/state', 'boot')
sys.exit(rc)