#!/usr/bin/env python

# THIS FILE IS PART OF THE CYLC SUITE ENGINE.
# Copyright (C) 2008-2017 NIWA
#
# 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 [info] version

Print the cylc version invoked at the command line.

Note that "cylc -v,--version" just prints the version string from the main
command interface, whereas this is a proper cylc command that can take the
standard --host and --user options, etc.

For the cylc version of running a suite daemon see
  "cylc get-suite-version"."""

import sys
import os
from cylc.remote import remrun
if remrun().execute():
    sys.exit(0)

import cylc.flags
from cylc.option_parsers import CylcOptionParser as COP
from cylc.cfgspec.globalcfg import GLOBAL_CFG
from cylc.version import CYLC_VERSION


def main():
    parser = COP(__doc__, argdoc=[])
    parser.add_option(
        "--long",
        help="Print the path to the current cylc version",
        action="store_true", dest="long_version", default=False)
    (options, args) = parser.parse_args()
    if options.long_version:
        print "%s (%s)" % (CYLC_VERSION, os.environ["CYLC_DIR"])
    else:
        print CYLC_VERSION


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