## $Id: export.py 9262 2012-10-01 06:36:33Z henrik $
##
## Copyright (C) 2012 Uli Fouquet & Henrik Bettermann
## 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 2 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, write to the Free Software
## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##
"""Exporters for access codes and access code batches.
"""
import grok
from zope.securitypolicy.interfaces import IPrincipalRoleManager
from waeup.kofa.interfaces import ICSVExporter
from waeup.kofa.interfaces import MessageFactory as _
from waeup.kofa.utils.batching import ExporterBase
from waeup.kofa.utils.helpers import iface_names
from waeup.kofa.accesscodes.interfaces import IAccessCode, IAccessCodeBatch

class AccessCodeBatchExporter(grok.GlobalUtility, ExporterBase):
    """Exporter for accesscodebatches.
    """
    grok.implements(ICSVExporter)
    grok.name('accesscodebatches')

    #: Fieldnames considered by this exporter
    fields = tuple(sorted(iface_names(IAccessCodeBatch))) + ('batch_id',)

    #: The title under which this exporter will be displayed
    title = _(u'AccessCodeBatches')

    def mangle_value(self, value, name, context=None):
        if name == 'batch_id' and context is not None:
            value = u'%s-%s' % (getattr(context, 'prefix', None),
                getattr(context, 'num', None))
        return super(
            AccessCodeBatchExporter, self).mangle_value(
            value, name, context=context)

    def export_all(self, site, filepath=None):
        """Export accesscode batches into filepath as CSV data.

        If `filepath` is ``None``, a raw string with CSV data is returned.
        """
        writer, outfile = self.get_csv_writer(filepath)
        accesscodebatches = site.get('accesscodes', {})
        for batch in accesscodebatches.values():
            self.write_item(batch, writer)
        return self.close_outfile(filepath, outfile)

class AccessCodeExporter(grok.GlobalUtility, ExporterBase):
    """Exporter for courses.
    """
    grok.implements(ICSVExporter)
    grok.name('accesscodes')

    #: Fieldnames considered by this exporter
    fields = tuple(sorted(iface_names(IAccessCode)))

    #: The title under which this exporter will be displayed
    title = _(u'AccessCodes')

    def mangle_value(self, value, name, context=None):
        if name == 'random_num' and value is not None:
            # Append hash '#' to numbers to circumvent
            # unwanted excel automatic
            value = str('%s#' % value)
        return super(
            AccessCodeExporter, self).mangle_value(
            value, name, context=context)

    def export_all(self, site, filepath=None):
        """Export accesscodes into filepath as CSV data.

        If `filepath` is ``None``, a raw string with CSV data is returned.
        """
        writer, outfile = self.get_csv_writer(filepath)
        accesscodebatches = site.get('accesscodes', {})
        for batch in accesscodebatches.values():
            for ac in batch.values():
                self.write_item(ac, writer)
        return self.close_outfile(filepath, outfile)