##################################################################
#
# (C) Copyright 2006-2007 ObjectRealms, LLC
# All Rights Reserved
#
# This file is part of iterate.
#
# iterate 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 2 of the License, or
# (at your option) any later version.
#
# iterate 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 CMFDeployment; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
##################################################################
"""
$Id: workflow.py 1824 2007-02-08 17:59:41Z hazmat $

Applies new checkout specific workflows to content that is checked out.

"""

from Acquisition import aq_base
from Products.CMFCore.utils import getToolByName
from Products.CMFPlacefulWorkflow.WorkflowPolicyConfig import WorkflowPolicyConfig
from Products.CMFPlacefulWorkflow.PlacefulWorkflowTool import WorkflowPolicyConfig_id
from plone.app.iterate.util import get_storage

USE_WORKFLOW = "checkout_workflow_policy"

policy_storage = "previous_wf_policy"

def handleCheckout( event ):
    # defer to setting
    properties = getToolByName(aq_base(event.object), 'portal_properties')
    enabled = properties.site_properties.getProperty('enable_checkout_workflow')
    if not enabled:
        return

    policy_id = properties.site_properties.getProperty('checkout_workflow_policy')
    
    existing_policy = getattr( aq_base( event.working_copy ), WorkflowPolicyConfig_id, None )
    storage = get_storage( event.relation )
    
    # set config for policy in and below 
    policy = WorkflowPolicyConfig( policy_id, policy_id)
    policy.coci_created = True
    
    if existing_policy is not None:
        storage[ policy_storage ] = policy

    # we setattr because we want the effect on non containerish objects
    setattr( event.working_copy, WorkflowPolicyConfig_id, policy )
    event.working_copy.notifyWorkflowCreated()
    event.working_copy.reindexObjectSecurity()

def handleCheckin( event ):
    policy = getattr( aq_base(event.object), WorkflowPolicyConfig_id, None )
    storage = get_storage( event.relation )
    previous_policy = storage.get( policy_storage )
    if previous_policy is None:
        if policy and not getattr(policy,'coci_created',False):  # only reset workflows we know.. could use are own storage
            return
        elif policy is None:
            return
        else:
            delattr( event.object, WorkflowPolicyConfig_id )
    else:
        setattr( event.object, WorkflowPolicyConfig_id, previous_policy)