#!python
# -*- coding: utf-8 -*-
# ***********************************************************************
# ******************  CANADIAN ASTRONOMY DATA CENTRE  *******************
# *************  CENTRE CANADIEN DE DONNÉES ASTRONOMIQUES  **************
#
# (c) 2015.                            (c) 2015.
#  Government of Canada                 Gouvernement du Canada
#  National Research Council            Conseil national de recherches
#  Ottawa, Canada, K1A 0R6              Ottawa, Canada, K1A 0R6
#  All rights reserved                  Tous droits réservés
#
#  NRC disclaims any warranties,        Le CNRC dénie toute garantie
#  expressed, implied, or               énoncée, implicite ou légale,
#  statutory, of any kind with          de quelque nature que ce
#  respect to the software,             soit, concernant le logiciel,
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#  any warranty of merchantability      toute garantie de valeur
#  or fitness for a particular          marchande ou de pertinence
#  purpose. NRC shall not be            pour un usage particulier.
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#  damages, whether direct or           être tenu responsable de tout
#  indirect, special or general,        dommage, direct ou indirect,
#  consequential or incidental,         particulier ou général,
#  arising from the use of the          accessoire ou fortuit, résultant
#  software.  Neither the name          de l'utilisation du logiciel. Ni
#  of the National Research             le nom du Conseil National de
#  Council of Canada nor the            Recherches du Canada ni les noms
#  names of its contributors may        de ses  participants ne peuvent
#  be used to endorse or promote        être utilisés pour approuver ou
#  products derived from this           promouvoir les produits dérivés
#  software without specific prior      de ce logiciel sans autorisation
#  written permission.                  préalable et particulière
#                                       par écrit.
#
#  This file is part of the             Ce fichier fait partie du projet
#  OpenCADC project.                    OpenCADC.
#
#  OpenCADC is free software:           OpenCADC est un logiciel libre ;
#  you can redistribute it and/or       vous pouvez le redistribuer ou le
#  modify it under the terms of         modifier suivant les termes de
#  the GNU Affero General Public        la “GNU Affero General Public
#  License as published by the          License” telle que publiée
#  Free Software Foundation,            par la Free Software Foundation
#  either version 3 of the              : soit la version 3 de cette
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#  OpenCADC is distributed in the       OpenCADC est distribué
#  hope that it will be useful,         dans l’espoir qu’il vous
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#  warranty of MERCHANTABILITY          implicite de COMMERCIALISABILITÉ
#  or FITNESS FOR A PARTICULAR          ni d’ADÉQUATION À UN OBJECTIF
#  PURPOSE.  See the GNU Affero         PARTICULIER. Consultez la Licence
#  General Public License for           Générale Publique GNU Affero
#  more details.                        pour plus de détails.
#
#  You should have received             Vous devriez avoir reçu une
#  a copy of the GNU Affero             copie de la Licence Générale
#  General Public License along         Publique GNU Affero avec
#  with OpenCADC.  If not, see          OpenCADC ; si ce n’est
#  <http://www.gnu.org/licenses/>.      pas le cas, consultez :
#                                       <http://www.gnu.org/licenses/>.
#
# ***********************************************************************

"""Given an x509 cert determine if a user is a member of at least one
of a list of groups"""

from canfar.groups.client import GroupsClient
from canfar.common.parser import BaseParser
import sys
from canfar.groups.exceptions import GroupExistsException, UserNotFoundException
from canfar.groups.group import Group
from canfar.groups.identity import Identity
from canfar.groups.user import User
from canfar.__version__ import version

description = "Create a group"

if __name__ == '__main__':

    # Parse the command line
    parser = BaseParser(description=description,version=version)
    parser.add_argument('groupname', type=str, help="Group name to create.")
    parser.add_argument('--pi_username', type=str,
                        help="PI username to create.")

    args = parser.parse_args()
    log_level = parser.get_log_level(args)
    groupname = args.groupname
    pi_username = args.pi_username
    certfile = args.certfile
    anonymous=args.anonymous
    host=args.host

    # Create a groups client and check for membership
    try:
        c = GroupsClient(certfile=certfile, anonymous=anonymous,
                         log_level=log_level, host=host)
        logger = c.logger

        group = Group(groupname, User(Identity(c.current_user_dn, 'X500')))
        if pi_username:
            current_user = User(Identity(pi_username, 'HTTP'))
            group.add_user_member(current_user)
            group.add_user_admin(current_user)
        c.create_group(group)
        sys.exit(0)
    except ValueError as ve:
        print str(ve)
        sys.exit(-1)
    except UserNotFoundException:
        logger.error("Unable to PUT new group. User '%s' not found." % \
                         c.get_current_user_dn())
        sys.exit(-1)
    except GroupExistsException:
        logger.info("Unable to PUT new group. Group '%s' already exists." % \
                        format(groupname))

        # If a user was given for an existing group,
        # add user as an admin user
        if pi_username:
            group = c.get_group(groupname)
            current_user = User(Identity(pi_username, 'HTTP'))

            # The set of user_admins contains the distinguishedName of the
            # users.
            # The user is a uid and we can't map between the two. Add the user
            # to the set and the server will sort out that they are dups.
            group.user_admins.add(current_user)
            try:
                c.update_group(group)
                sys.exit(0)
            except UserNotFoundException:
                logger.error("Unable to update existing group. " + \
                                 "User admin '%s' not found." % \
                                 current_user.user_id)
        else:
            sys.exit(-1)
