#!/usr/bin/env python

###############################################################################
# (c) Copyright 2016 CERN                                                     #
#                                                                             #
# This software is distributed under the terms of the GNU General Public      #
# Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING".   #
#                                                                             #
# In applying this licence, CERN does not waive the privileges and immunities #
# granted to it by virtue of its status as an Intergovernmental Organization  #
# or submit itself to any jurisdiction.                                       #
###############################################################################
'''
Command line client that interfaces to the Installer class

:author: Stefan-Gabriel CHITIC
'''
from __future__ import print_function

import sys

from lbCVMFSTools.GenericClient import GenericClient, ClientException
from lbCVMFSTools.TaskHandlers.DevPackagesGC. \
    DevPackagesGC import DevPackagesGC
from lbCVMFSTools.TransactionHandlers.CVMFSTransactionHandler.\
    CVMFSTranscationHandler import CVMFSTransactionHandler
from lbCVMFSTools.TransactionHandlers.DefaultTransactionHandler.\
    DefaultTransactionHandler import DefaultTransactionHandler


class CVMFSDevGC(GenericClient, object):
    """ Main class for the tool """

    def __init__(self, prog, help):
        """ Common setup for both clients """
        super(CVMFSDevGC, self).__init__(prog=prog, help=help)
        self.parser.add_option('--siteroot',
                               dest="siteroot",
                               default='/cvmfs/lhcbdev.cern.ch/lib',
                               action="store",
                               help="The siteroot of packages to remove")
        self.parser.add_option('--repo',
                               dest="repo",
                               default=None,
                               action="store",
                               help="The path to the repo")

    def defineTaskHandler(self, args, opts):
        return DevPackagesGC(dry_run=opts.dry_run,
                             siteroot=opts.siteroot,
                             repo=opts.repo)

    def defineTransitionHandler(self, args, opts):
        return CVMFSTransactionHandler(args[0], dry_run=opts.dry_run)

    def configureClient(self, args, opts):
        if len(args) != 1:
            raise ClientException("Repo name needs to be provided")


def CVMFSDevGCManager(prog="CVMFSDevGC",
                      help="repo_name -  removes dev packages on CVMFS"):
    """
    Default caller for command line CVMFSDevChecker client
    :param configType: the configuration used
    :param prog: the name of the executable
    """
    sys.exit(CVMFSDevGC(prog=prog, help=help).main())

# Main just chooses the client and starts it
if __name__ == "__main__":
    CVMFSDevGCManager()

