# Copyright (C) 2006-2015 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/>.

"""Model for addresses."""

__all__ = [
    'Address',
    ]


from email.utils import formataddr
from mailman.database.model import Model
from mailman.interfaces.address import (
    AddressVerificationEvent, IAddress, IEmailValidator)
from mailman.utilities.datetime import now
from sqlalchemy import Column, DateTime, ForeignKey, Integer, Unicode
from sqlalchemy.orm import relationship, backref
from zope.component import getUtility
from zope.event import notify
from zope.interface import implementer



@implementer(IAddress)
class Address(Model):
    """See `IAddress`."""

    __tablename__ = 'address'

    id = Column(Integer, primary_key=True)
    email = Column(Unicode)
    _original = Column(Unicode)
    display_name = Column(Unicode)
    _verified_on = Column('verified_on', DateTime)
    registered_on = Column(DateTime)

    user_id = Column(Integer, ForeignKey('user.id'), index=True)

    preferences_id = Column(Integer, ForeignKey('preferences.id'), index=True)
    preferences = relationship(
        'Preferences', backref=backref('address', uselist=False))

    def __init__(self, email, display_name):
        super(Address, self).__init__()
        getUtility(IEmailValidator).validate(email)
        lower_case = email.lower()
        self.email = lower_case
        self.display_name = display_name
        self._original = (None if lower_case == email else email)
        self.registered_on = now()

    def __str__(self):
        addr = (self.email if self._original is None else self._original)
        return formataddr((self.display_name, addr))

    def __repr__(self):
        verified = ('verified' if self.verified_on else 'not verified')
        address_str = str(self)
        if self._original is None:
            return '<Address: {0} [{1}] at {2:#x}>'.format(
                address_str, verified, id(self))
        else:
            return '<Address: {0} [{1}] key: {2} at {3:#x}>'.format(
                address_str, verified, self.email, id(self))

    @property
    def verified_on(self):
        return self._verified_on

    @verified_on.setter
    def verified_on(self, timestamp):
        self._verified_on = timestamp
        notify(AddressVerificationEvent(self))

    @property
    def original_email(self):
        return (self.email if self._original is None else self._original)