#!/usr/bin/env python2

# THIS FILE IS PART OF THE CYLC SUITE ENGINE.
# Copyright (C) 2008-2018 NIWA & British Crown (Met Office) & Contributors.
#
# 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 3 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

"""cylc [control] remove [OPTIONS] ARGS

Remove one or more tasks (cylc remove REG TASKID), or all tasks with a
given cycle point (cylc remove REG *.POINT) from a running suite.

Tasks will spawn successors first if they have not done so already.
"""

import sys
if '--use-ssh' in sys.argv[1:]:
    sys.argv.remove('--use-ssh')
    from cylc.remote import remrun
    if remrun():
        sys.exit(0)

import cylc.flags
from cylc.prompt import prompt
from cylc.option_parsers import CylcOptionParser as COP
from cylc.network.httpclient import SuiteRuntimeServiceClient


def main():
    parser = COP(
        __doc__, comms=True, multitask=True,
        argdoc=[
            ("REG", "Suite name"),
            ('TASKID [...]', 'Task identifiers')])

    parser.add_option(
        "--no-spawn",
        help="Do not spawn successors before removal.",
        action="store_true", default=False, dest="no_spawn")

    options, args = parser.parse_args()

    suite = args.pop(0)
    prompt('remove task(s) %s in %s' % (args, suite), options.force)
    pclient = SuiteRuntimeServiceClient(
        suite, options.owner, options.host, options.port,
        options.comms_timeout, my_uuid=options.set_uuid,
        print_uuid=options.print_uuid)
    items = parser.parse_multitask_compat(options, args)
    pclient.put_command('remove_tasks', items=items,
                        spawn=(not options.no_spawn))


if __name__ == "__main__":
    try:
        main()
    except Exception as exc:
        if cylc.flags.debug:
            raise
        sys.exit(str(exc))
