#!python

# THIS FILE IS PART OF THE CYLC SUITE ENGINE.
# Copyright (C) 2008-2019 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 TASK_GLOB), 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)

from cylc.option_parsers import CylcOptionParser as COP
from cylc.network.client import SuiteRuntimeClient
from cylc.terminal import prompt, cli_function


@cli_function
def main():
    parser = COP(
        __doc__, comms=True, multitask=True,
        argdoc=[
            ("REG", "Suite name"),
            ('TASK_GLOB [...]', 'Task matching patterns')])

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

    options, (suite, *task_globs) = parser.parse_args()

    prompt('remove task(s) %s in %s' % (task_globs, suite), options.force)
    pclient = SuiteRuntimeClient(
        suite, options.owner, options.host, options.port,
        options.comms_timeout)
    pclient(
        'remove_tasks',
        {'task_globs': task_globs, 'spawn': (not options.no_spawn)}
    )


if __name__ == "__main__":
    main()
