import os
import sys
import time
import urllib
import traceback
from Globals import InitializeClass
from Globals import DTMLFile
from ExtensionClass import Base
from ZODB.POSException import ConflictError
from zExceptions import NotFound
from AccessControl import ClassSecurityInfo
from AccessControl.Permissions import manage_zcatalog_entries as ManageZCatalogEntries
from Acquisition import aq_base, aq_parent, aq_inner
from Products.ZCatalog.ZCatalog import ZCatalog
from Products.ZCatalog.Catalog import Catalog
from Products.ZCatalog.CatalogBrains import AbstractCatalogBrain
from Products import CMFCore
from Products.CMFCore.utils import UniqueObject
from Products.CMFCore.utils import getToolByName
from Products.Archetypes.config import UID_CATALOG
from Products.Archetypes.config import TOOL_NAME
from Products.Archetypes.debug import log
from Products.Archetypes.interfaces.referenceengine import IUIDCatalog
from Products.Archetypes.utils import getRelURL

_catalog_dtml = os.path.join(os.path.dirname(CMFCore.__file__), 'dtml')

def manage_addUIDCatalog(self, id, title,
                         vocab_id=None, # Deprecated
                         REQUEST=None):
    """Add the UID Catalog
    """
    id = str(id)
    title = str(title)
    c = UIDCatalog(id, title, vocab_id, self)
    self._setObject(id, c)

    if REQUEST is not None:
        return self.manage_main(self, REQUEST,update_menu=1)


class PluggableCatalog(Catalog):
    # Catalog overrides
    # smarter brains, squirrely traversal

    security = ClassSecurityInfo()
    # XXX FIXME more security

    def useBrains(self, brains):
        """Tricky brains overrides, we need to use our own class here
        with annotation support
        """
        class plugbrains(self.BASE_CLASS, brains):
            pass

        schema = self.schema
        scopy = schema.copy()

        scopy['data_record_id_']=len(schema.keys())
        scopy['data_record_score_']=len(schema.keys())+1
        scopy['data_record_normalized_score_']=len(schema.keys())+2

        plugbrains.__record_schema__ = scopy

        self._v_brains = brains
        self._v_result_class = plugbrains

InitializeClass(PluggableCatalog)

class UIDCatalogBrains(AbstractCatalogBrain):
    """fried my little brains"""

    security = ClassSecurityInfo()

    def getObject(self, REQUEST=None):
        """
        Used to resolve UIDs into real objects. This also must be
        annotation aware. The protocol is:
        We have the path to an object. We get this object. If its
        UID is not the UID in the brains then we need to pull it
        from the reference annotation and return that object

        Thus annotation objects store the path to the source object
        """
        obj = None
        try:
            path = self.getPath()
            try:
                portal = getToolByName(self, 'portal_url').getPortalObject()
                obj = portal.unrestrictedTraverse(self.getPath())
                obj = aq_inner( obj )
            except (ConflictError, KeyboardInterrupt):
                raise
            except: #NotFound # XXX bare exception
                pass

            if obj is None:
                if REQUEST is None:
                    REQUEST = self.REQUEST
                obj = self.aq_parent.resolve_url(self.getPath(), REQUEST)

            return obj
        except (ConflictError, KeyboardInterrupt):
            raise
        except:
            log('UIDCatalogBrains getObject raised an error:\n %s' %
                '\n'.join(traceback.format_exception(*sys.exc_info())))
            pass

InitializeClass(UIDCatalogBrains)

class IndexableObjectWrapper(object):
    """Wwrapper for object indexing
    """
    def __init__(self, obj):
        self._obj = obj

    def __getattr__(self, name):
        return getattr(self._obj, name)

    def Title(self):
        # TODO: dumb try to make sure UID catalog doesn't fail if Title can't be
        # converted to an ascii string
        # Title is used for sorting only, maybe we could replace it by a better
        # version
        title = self._obj.Title()
        try:
            return str(title)
        except UnicodeDecodeError:
            return self._obj.getId()

_marker=[]

class UIDResolver(Base):

    security = ClassSecurityInfo()
    # XXX FIXME more security

    def resolve_url(self, path, REQUEST):
        """Strip path prefix during resolution, This interacts with
        the default brains.getObject model and allows and fakes the
        ZCatalog protocol for traversal
        """
        parts = path.split('/')
        # XXX REF_PREFIX is undefined
        #if parts[-1].find(REF_PREFIX) == 0:
        #    path = '/'.join(parts[:-1])

        portal_object = self.portal_url.getPortalObject()

        try:
            return portal_object.unrestrictedTraverse(path)
        except (KeyError, AttributeError, NotFound):
            # ObjectManager may raise a KeyError when the object isn't there
            return None

    def catalog_object(self, obj, uid=None, **kwargs):
        """Use the relative path from the portal root as uid

        Ordinary the catalog is using the path from root towards object but we
        want only a relative path from the portal root

        Note: This method could be optimized by improving the calculation of the
              relative path like storing the portal root physical path in a
              _v_ var.
        """
        portal_path_len = getattr(aq_base(self), '_v_portal_path_len', None)

        if not portal_path_len:
            # cache the lenght of the portal path in a _v_ var
            urlTool = getToolByName(self, 'portal_url')
            portal_path = urlTool.getPortalObject().getPhysicalPath()
            portal_path_len = len(portal_path)
            self._v_portal_path_len = portal_path_len

        relpath = obj.getPhysicalPath()[portal_path_len:]
        uid = '/'.join(relpath)
        __traceback_info__ = (repr(obj), uid)
        ZCatalog.catalog_object(self, obj, uid, **kwargs)

InitializeClass(UIDResolver)

class UIDBaseCatalog(PluggableCatalog):
    BASE_CLASS = UIDCatalogBrains


class UIDCatalog(UniqueObject, UIDResolver, ZCatalog):
    """Unique id catalog
    """

    id = UID_CATALOG
    security = ClassSecurityInfo()
    __implements__ = IUIDCatalog

    manage_catalogFind = DTMLFile('catalogFind', _catalog_dtml)

    manage_options = ZCatalog.manage_options + \
        ({'label': 'Rebuild catalog',
         'action': 'manage_rebuildCatalog',}, )


    def __init__(self, id, title='', vocab_id=None, container=None):
        """We hook up the brains now"""
        ZCatalog.__init__(self, id, title, vocab_id, container)
        self._catalog = UIDBaseCatalog()

    security.declareProtected(ManageZCatalogEntries, 'catalog_object')
    def catalog_object(self, object, uid, idxs=[],
                       update_metadata=1, pghandler=None):
        w = IndexableObjectWrapper(object)
        try:
            # pghandler argument got added in Zope 2.8
            ZCatalog.catalog_object(self, w, uid, idxs,
                                    update_metadata, pghandler=pghandler)
        except TypeError:
            try:
                # update_metadata argument got added somewhere into
                # the Zope 2.6 line (?)
                ZCatalog.catalog_object(self, w, uid, idxs, update_metadata)
            except TypeError:
                ZCatalog.catalog_object(self, w, uid, idxs)

    def _catalogObject(self, obj, path):
        """Catalog the object. The object will be cataloged with the absolute
           path in case we don't pass the relative url.
        """ 
        url = getRelURL(self, obj.getPhysicalPath()) 
        self.catalog_object(obj, url) 

    security.declareProtected(CMFCore.permissions.ManagePortal, 'manage_rebuildCatalog')
    def manage_rebuildCatalog(self, REQUEST=None, RESPONSE=None):
        """
        """
        elapse = time.time()
        c_elapse = time.clock()

        atool   = getToolByName(self, TOOL_NAME)
        obj     = aq_parent(self)
        path    = '/'.join(obj.getPhysicalPath())
        if not REQUEST:
            REQUEST = self.REQUEST

        # build a list of archetype meta types
        mt = tuple([typ['meta_type'] for typ in atool.listRegisteredTypes()])

        # clear the catalog
        self.manage_catalogClear()

        # find and catalog objects
        self.ZopeFindAndApply(obj,
                              obj_metatypes=mt,
                              search_sub=1,
                              REQUEST=REQUEST,
                              apply_func=self._catalogObject,
                              apply_path=path)

        elapse = time.time() - elapse
        c_elapse = time.clock() - c_elapse

        if RESPONSE:
            RESPONSE.redirect(
            REQUEST.URL1 +
            '/manage_catalogView?manage_tabs_message=' +
            urllib.quote('Catalog Rebuilded\n'
                         'Total time: %s\n'
                         'Total CPU time: %s'
                         % (`elapse`, `c_elapse`))
            )

