"""Fake objects to ease testing of cubicweb without a fully working environment

:organization: Logilab

:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.

:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr

:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses

"""

__docformat__ = "restructuredtext en"

from logilab.common.adbh import get_adv_func_helper

from indexer import get_indexer

from cubicweb.web.request import CubicWebRequestBase

from cubicweb.devtools import BASE_URL, BaseApptestConfiguration

class FakeConfig(dict, BaseApptestConfiguration):

    translations = {}

    apphome = None

    def __init__(self, appid='data', apphome=None, cubes=()):

        self.appid = appid

        self.apphome = apphome

        self._cubes = cubes

        self['auth-mode'] = 'cookie'

        self['uid'] = None

        self['base-url'] = BASE_URL

        self['rql-cache-size'] = 100

    def cubes(self, expand=False):

        return self._cubes

    def sources(self):

        return {}

class FakeVReg(dict):

    def __init__(self, schema=None, config=None):

        self.schema = schema

        self.config = config or FakeConfig()

        self.properties = {'ui.encoding': 'UTF8',

                           'ui.language': 'en',

                           }

        self.update({

            'controllers' : {'login': []},

            'views' : {},

            })

    def property_value(self, key):

        return self.properties[key]

    def etype_class(self, etype):

        class Entity(dict):

            e_schema = self.schema[etype]

            def __init__(self, session, eid, row=0, col=0):

                self.req = session

                self.eid = eid

                self.row, self.col = row, col

            def set_eid(self, eid):

                self.eid = self['eid'] = eid

        return Entity

class FakeRequest(CubicWebRequestBase):

    """test implementation of an cubicweb request object"""

    def __init__(self, *args, **kwargs):

        if not (args or 'vreg' in kwargs):

            kwargs['vreg'] = FakeVReg()

        kwargs['https'] = False

        self._url = kwargs.pop('url', 'view?rql=Blop&vid=blop')

        super(FakeRequest, self).__init__(*args, **kwargs)

        self._session_data = {}

        self._headers = {}

    def header_accept_language(self):

        """returns an ordered list of preferred languages"""

        return ('en',)

    def header_if_modified_since(self):

        return None

    def base_url(self):

        """return the root url of the instance"""

        return BASE_URL

    def relative_path(self, includeparams=True):

        """return the normalized path of the request (ie at least relative

        to the instance's root, but some other normalization may be needed

        so that the returned path may be used to compare to generated urls

        """

        if self._url.startswith(BASE_URL):

            url = self._url[len(BASE_URL):]

        else:

            url = self._url

        if includeparams:

            return url

        return url.split('?', 1)[0]

    def set_content_type(self, content_type, filename=None, encoding=None):

        """set output content type for this request. An optional filename

        may be given

        """

        pass

    def set_header(self, header, value):

        """set an output HTTP header"""

        pass

    def add_header(self, header, value):

        """set an output HTTP header"""

        pass

    def remove_header(self, header):

        """remove an output HTTP header"""

        pass

    def get_header(self, header, default=None):

        """return the value associated with the given input header,

        raise KeyError if the header is not set

        """

        return self._headers.get(header, default)

    def set_cookie(self, cookie, key, maxage=300):

        """set / update a cookie key

        by default, cookie will be available for the next 5 minutes

        """

        pass

    def remove_cookie(self, cookie, key):

        """remove a cookie by expiring it"""

        pass

    def validate_cache(self):

        pass

    # session compatibility (in some test are using this class to test server

    # side views...)

    def actual_session(self):

        """return the original parent session if any, else self"""

        return self

    def unsafe_execute(self, *args, **kwargs):

        """return the original parent session if any, else self"""

        kwargs.pop('propagate', None)

        return self.execute(*args, **kwargs)

# class FakeRequestNoCnx(FakeRequest):

#     def get_session_data(self, key, default=None, pop=False):

#         """return value associated to `key` in session data"""

#         if pop:

#             return self._session_data.pop(key, default)

#         else:

#             return self._session_data.get(key, default)

#     def set_session_data(self, key, value):

#         """set value associated to `key` in session data"""

#         self._session_data[key] = value

#     def del_session_data(self, key):

#         try:

#             del self._session_data[key]

#         except KeyError:

#             pass

class FakeUser(object):

    login = 'toto'

    eid = 0

    def in_groups(self, groups):

        return True

    def __init__(self, repo=None, user=None):

        self.repo = repo

        self.vreg = getattr(self.repo, 'vreg', FakeVReg())

        self.pool = FakePool()

        self.user = user or FakeUser()

        self.is_internal_session = False

        self.is_super_session = self.user.eid == -1

        self.transaction_data = {}

    def execute(self, *args):

        pass

    unsafe_execute = execute

    def commit(self, *args):

        self.transaction_data.clear()

    def close(self, *args):

        pass

    def system_sql(self, sql, args=None):

        pass

    def decorate_rset(self, rset, propagate=False):

        rset.vreg = self.vreg

        rset.req = self

        return rset

    def set_entity_cache(self, entity):

        pass

class FakeRepo(object):

    querier = None

    def __init__(self, schema, vreg=None, config=None):

        self.extids = {}

        self.eids = {}

        self._count = 0

        self.schema = schema

        self.vreg = vreg or FakeVReg()

        self.config = config or FakeConfig()

    def internal_session(self):

        return FakeSession(self)

    def extid2eid(self, source, extid, etype, session, insert=True,

                  recreate=False):

        try:

            return self.extids[extid]

        except KeyError:

            if not insert:

                return None

            self._count += 1

            eid = self._count

            entity = source.before_entity_insertion(session, extid, etype, eid)

            self.extids[extid] = eid

            self.eids[eid] = extid

            source.after_entity_insertion(session, extid, entity)

            return eid

    def eid2extid(self, source, eid, session=None):

        return self.eids[eid]

class FakeSource(object):

    dbhelper = get_adv_func_helper('sqlite')

    indexer = get_indexer('sqlite', 'UTF8')

    dbhelper.fti_uid_attr = indexer.uid_attr

    dbhelper.fti_table = indexer.table

    dbhelper.fti_restriction_sql = indexer.restriction_sql

    dbhelper.fti_need_distinct_query = indexer.need_distinct

    def __init__(self, uri):

        self.uri = uri

class FakePool(object):

    def source(self, uri):

        return FakeSource(uri)

# commented until proven to be useful

## from logging import getLogger

## from cubicweb import set_log_methods

## for cls in (FakeConfig, FakeVReg, FakeRequest, FakeSession, FakeRepo,

##             FakeSource, FakePool):

##     set_log_methods(cls, getLogger('fake'))