# Copyright (C) 2009-2014 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman 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 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman 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
# GNU Mailman.  If not, see <http://www.gnu.org/licenses/>.

"""Module stuff."""

from __future__ import absolute_import, print_function, unicode_literals

__metaclass__ = type
__all__ = [
    'AutoResponseRecord',
    'AutoResponseSet',
    ]


from sqlalchemy import Column, Date, ForeignKey, Integer
from sqlalchemy import desc
from sqlalchemy.orm import relationship
from zope.interface import implementer

from mailman.database.model import Model
from mailman.database.transaction import dbconnection
from mailman.database.types import Enum
from mailman.interfaces.autorespond import (
    IAutoResponseRecord, IAutoResponseSet, Response)
from mailman.utilities.datetime import today



@implementer(IAutoResponseRecord)
class AutoResponseRecord(Model):
    """See `IAutoResponseRecord`."""

    __tablename__ = 'autoresponserecord'

    id = Column(Integer, primary_key=True)

    address_id = Column(Integer, ForeignKey('address.id'), index=True)
    address = relationship('Address')

    mailing_list_id = Column(Integer, ForeignKey('mailinglist.id'), index=True)
    mailing_list = relationship('MailingList')

    response_type = Column(Enum(Response))
    date_sent = Column(Date)

    def __init__(self, mailing_list, address, response_type):
        self.mailing_list = mailing_list
        self.address = address
        self.response_type = response_type
        self.date_sent = today()



@implementer(IAutoResponseSet)
class AutoResponseSet:
    """See `IAutoResponseSet`."""

    def __init__(self, mailing_list):
        self._mailing_list = mailing_list

    @dbconnection
    def todays_count(self, store, address, response_type):
        """See `IAutoResponseSet`."""
        return store.query(AutoResponseRecord).filter_by(
            address=address,
            mailing_list=self._mailing_list,
            response_type=response_type,
            date_sent=today()).count()

    @dbconnection
    def response_sent(self, store, address, response_type):
        """See `IAutoResponseSet`."""
        response = AutoResponseRecord(
            self._mailing_list, address, response_type)
        store.add(response)

    @dbconnection
    def last_response(self, store, address, response_type):
        """See `IAutoResponseSet`."""
        results = store.query(AutoResponseRecord).filter_by(
            address=address,
            mailing_list=self._mailing_list,
            response_type=response_type
            ).order_by(desc(AutoResponseRecord.date_sent))
        return (None if results.count() == 0 else results.first())