from rhodecode.lib.compat import json

from rhodecode.model.meta import Base, Session

from rhodecode.model.caching_query import FromCache

log = logging.getLogger(__name__)

#==============================================================================

# BASE CLASSES

#==============================================================================

class ModelSerializer(json.JSONEncoder):

    """

    Simple Serializer for JSON,

    usage::

        to make object customized for serialization implement a __json__

        method that will return a dict for serialization into json

    example::

        class Task(object):

                return dict(name=self.name,

                            value=self.value)

    """

    def default(self, obj):

        if hasattr(obj, '__json__'):

            return obj.__json__()

        else:

            return json.JSONEncoder.default(self, obj)

class BaseModel(object):

    """Base Model for all classess

    """

    @classmethod

    def _get_keys(cls):

        """return column names for this model """

        return class_mapper(cls).c.keys()

    def get_dict(self):

        """return dict with keys and values corresponding

        to this model data """

        d = {}

        for k in self._get_keys():

            d[k] = getattr(self, k)

        return d

    def get_appstruct(self):

        """return list with keys and values tupples corresponding

        to this model data """

        l = []

        for k in self._get_keys():

            l.append((k, getattr(self, k),))

        return l

    def populate_obj(self, populate_dict):

    @property

    def is_admin(self):

        return self.admin

    def __repr__(self):

        try:

            return "<%s('id:%s:%s')>" % (self.__class__.__name__,

                                             self.user_id, self.username)

        except:

            return self.__class__.__name__

    @classmethod

    def get_by_username(cls, username, case_insensitive=False):

        if case_insensitive:

            return Session.query(cls).filter(cls.username.ilike(username)).scalar()

        else:

            return Session.query(cls).filter(cls.username == username).scalar()

    @classmethod

    def get_by_api_key(cls, api_key):

        return cls.query().filter(cls.api_key == api_key).one()

    def update_lastlogin(self):