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

"""

__docformat__ = "restructuredtext en"

from logilab.database import get_db_helper

from cubicweb.req import RequestSessionBase

from cubicweb.cwvreg import CubicWebVRegistry

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 FakeRequest(CubicWebRequestBase):

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

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

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

            kwargs['vreg'] = CubicWebVRegistry(FakeConfig(), initlog=False)

        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, raw=True):

        """set an output HTTP header"""

        self._headers[header] = value

    def add_header(self, header, value):

        """set an output HTTP header"""

        self._headers[header] = value # XXX

    def remove_header(self, header):

        """remove an output HTTP header"""

        self._headers.pop(header, None)

    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, expires=None):

        """set / update a cookie key

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

        """

        morsel = cookie[key]

        if maxage is not None:

            morsel['Max-Age'] = maxage

        if expires:

            morsel['expires'] = expires.strftime('%a, %d %b %Y %H:%M:%S %z')

        # make sure cookie is set on the correct path

        morsel['path'] = self.base_url_path()

        self.add_header('Set-Cookie', morsel.OutputString())

        self.add_header('Cookie', morsel.OutputString())

    def remove_cookie(self, cookie, key):

        self.remove_header('Set-Cookie')

        self.remove_header('Cookie')

    def validate_cache(self):

        pass

class FakeUser(object):

    login = 'toto'

    eid = 0

    def in_groups(self, groups):

        return True

class FakeSession(RequestSessionBase):

    read_security = write_security = True

    set_read_security = set_write_security = lambda *args, **kwargs: None

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

        self.repo = repo

        self.vreg = getattr(self.repo, 'vreg', CubicWebVRegistry(FakeConfig(), initlog=False))

        self.pool = FakePool()

        self.user = user or FakeUser()

        self.is_internal_session = False

        self.transaction_data = {}

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

        pass

    def commit(self, *args):

        self.transaction_data.clear()

    def close(self, *args):

        pass

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

        pass

    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.config = config or FakeConfig()

        self.vreg = vreg or CubicWebVRegistry(self.config, initlog=False)

        self.vreg.schema = schema

    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_db_helper('sqlite')

    def __init__(self, uri):

        self.uri = uri

class FakePool(object):

    def source(self, uri):

        return FakeSource(uri)