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#              C E D A R
#          S O L U T I O N S       "Software done right."
#           S O F T W A R E
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# Copyright (c) 2007,2010 Kenneth J. Pronovici.
# All rights reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License,
# Version 2, as published by the Free Software Foundation.
#
# 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.
#
# Copies of the GNU General Public License are available from
# the Free Software Foundation website, http://www.gnu.org/.
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# Author   : Kenneth J. Pronovici <pronovic@ieee.org>
# Language : Python 2 (>= 2.7)
# Project  : Cedar Backup, release 2
# Purpose  : Implements the standard 'initialize' action.
#
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# Module documentation
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"""
Implements the standard 'initialize' action.
@sort: executeInitialize
@author: Kenneth J. Pronovici <pronovic@ieee.org>
"""


########################################################################
# Imported modules
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# System modules
import logging

# Cedar Backup modules
from CedarBackup2.actions.util import initializeMediaState


########################################################################
# Module-wide constants and variables
########################################################################

logger = logging.getLogger("CedarBackup2.log.actions.initialize")


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# Public functions
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###############################
# executeInitialize() function
###############################

def executeInitialize(configPath, options, config):
   """
   Executes the initialize action.

   The initialize action initializes the media currently in the writer
   device so that Cedar Backup can recognize it later.  This is an optional
   step; it's only required if checkMedia is set on the store configuration.

   @param configPath: Path to configuration file on disk.
   @type configPath: String representing a path on disk.

   @param options: Program command-line options.
   @type options: Options object.

   @param config: Program configuration.
   @type config: Config object.
   """
   logger.debug("Executing the 'initialize' action.")
   if config.options is None or config.store is None:
      raise ValueError("Store configuration is not properly filled in.")
   initializeMediaState(config)
   logger.info("Executed the 'initialize' action successfully.")

