# coding=utf-8
"""
"""
from __future__ import absolute_import

from sqlalchemy.schema import Column, ForeignKey
from sqlalchemy.orm import relationship
from sqlalchemy.ext.declarative import declared_attr

from flask import g
from whoosh.fields import STORED

from .base import SYSTEM, SEARCHABLE
from .subjects import User

class OwnedMixin(object):

  __indexation_args__ = {
    'index_to': (('creator', ('creator',)),
                 ('creator_name', (('creator_name', STORED),)),
                 ('owner', ('owner',)),
                 ('owner_name', (('owner_name', STORED),)),
      ),
    }

  def __init__(self, *args, **kwargs):
    if hasattr(g, 'user'):
      if not self.creator and not g.user.is_anonymous():
        self.creator = g.user
      if not self.owner and not g.user.is_anonymous():
        self.owner = g.user

  @declared_attr
  def creator_id(cls):
    return Column(ForeignKey(User.id), info=SYSTEM)

  @declared_attr
  def creator(cls):
    pj = "User.id == %s.creator_id" % cls.__name__
    return relationship(User, primaryjoin=pj, lazy='joined', uselist=False,
                        info=SYSTEM|SEARCHABLE)

  @property
  def creator_name(self):
    return unicode(self.creator) if self.creator else u''

  @declared_attr
  def owner_id(cls):
    return Column(ForeignKey(User.id), info=SYSTEM)

  @declared_attr
  def owner(cls):
    pj = "User.id == %s.owner_id" % cls.__name__
    return relationship(User, primaryjoin=pj, lazy='joined', uselist=False,
                        info=SYSTEM|SEARCHABLE)

  @property
  def owner_name(self):
    return unicode(self.owner) if self.owner else u''
