# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2009         Douglas S. Blank <doug.blank@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# $Id$
#

""" Implements a Db interface """

#------------------------------------------------------------------------
#
# Gramps Modules
#
#------------------------------------------------------------------------
import web
import gen
from gen.db import DbReadBase, DbWriteBase
from web.libdjango import DjangoInterface

# from ReportBase._CommandLineReport import run_report
# import djangodb
# db = djangodb.DjangoDb()
# run_report(db, "ancestor_report", off="txt", of="ar.txt", pid="I37")

class Cursor(object):
    def __init__(self, model, func):
        self.model = model
        self.func = func
    def __enter__(self):
        return self
    def __iter__(self):
        return self.__next__()
    def __next__(self):
        for item in self.model.all():
            yield (item.handle, self.func(item))
    def __exit__(self, *args, **kwargs):
        pass

class DjangoDb(DbReadBase, DbWriteBase):
    """
    A Gramps Database Backend. This replicates the grampsdb functions.
    """

    def __init__(self):
        DbReadBase.__init__(self)
        DbWriteBase.__init__(self)
        self.dji = DjangoInterface()
        self.readonly = False
        self.db_is_open = True
        self.name_formats = range(4)
        self.bookmarks = []
        self.family_bookmarks = []
        self.event_bookmarks = []
        self.place_bookmarks = []
        self.source_bookmarks = []
        self.repo_bookmarks = []
        self.media_bookmarks = []
        self.note_bookmarks = []

    def get_researcher(self):
        obj = gen.lib.Name()
        return obj

    def get_event_from_handle(self, handle):
        obj = gen.lib.Event()
        obj.unserialize(self.dji.get_event(self.dji.Event.get(handle=handle)))
        return obj

    def get_family_from_handle(self, handle):
        obj = gen.lib.Family()
        obj.unserialize(self.dji.get_family(self.dji.Family.get(handle=handle)))
        return obj

    def get_person_from_handle(self, handle):
        data = self.dji.get_person(self.dji.Person.select_related().get(handle=handle))
        obj = gen.lib.Person.create(data)
        return obj

    def get_place_from_handle(self, handle):
        try:
            dji_obj = self.dji.Place.get(handle=handle)
        except:
            dji_obj = None
        if dji_obj:
            tuple_obj = self.dji.get_place(dji_obj)
            if tuple_obj:
                obj = gen.lib.Place()
                obj.unserialize(tuple_obj)
                return obj
        return None

    def get_source_from_handle(self, handle):
        obj = gen.lib.Source()
        obj.unserialize(self.dji.get_source(self.dji.Source.get(handle=handle)))
        return obj

    def get_note_from_handle(self, handle):
        obj = gen.lib.Note()
        obj.unserialize(self.dji.get_note(self.dji.Note.get(handle=handle)))
        return obj

    def get_object_from_handle(self, handle):
        obj = gen.lib.MediaObject()
        obj.unserialize(self.dji.get_media(self.dji.Media.get(handle=handle)))
        return obj

    def get_person_handles(self):
        return [person.handle for person in self.dji.Person.all()]

    def get_default_person(self):
        return None

    def iter_person_handles(self):
        return (person.handle for person in self.dji.Person.all())

    def iter_families(self):
        return (self.get_family_from_handle(family.handle) 
                for family in self.dji.Family.all())

    def get_person_from_gramps_id(self, gramps_id):
        obj = gen.lib.Person()
        match_list = self.dji.Person.filter(gramps_id=gramps_id)
        if match_list.count() > 0:
            data = self.dji.get_person(
                match_list[0]
                )
            obj.unserialize(data)
            return obj
        else:
            return None

    def get_number_of_people(self):
        return self.dji.Person.count()

    def get_number_of_families(self):
        return self.dji.Family.count()

    def get_number_of_notes(self):
        return self.dji.Note.count()

    def get_number_of_sources(self):
        return self.dji.Source.count()

    def get_number_of_media_objects(self):
        return self.dji.Media.count()

    def get_number_of_repositories(self):
        return self.dji.Repository.count()

    def get_place_cursor(self):
        return Cursor(self.dji.Place, self.dji.get_place)

    def get_person_cursor(self):
        return Cursor(self.dji.Person, self.dji.get_person)

    def get_family_cursor(self):
        return Cursor(self.dji.Family, self.dji.get_family)

    def get_events_cursor(self):
        return Cursor(self.dji.Event, self.dji.get_event)

    def get_source_cursor(self):
        return Cursor(self.dji.Source, self.dji.get_source)

    def has_person_handle(self, handle):
        return self.dji.Person.filter(handle=handle).count() == 1

    def has_family_handle(self, handle):
        return self.dji.Family.filter(handle=handle).count() == 1

    def has_source_handle(self, handle):
        return self.dji.Source.filter(handle=handle).count() == 1

    def has_repository_handle(self, handle):
        return self.dji.Repository.filter(handle=handle).count() == 1

    def has_note_handle(self, handle):
        return self.dji.Note.filter(handle=handle).count() == 1

    def has_place_handle(self, handle):
        return self.dji.Place.filter(handle=handle).count() == 1

    def get_raw_person_data(self, handle):
        return self.dji.get_person(self.dji.Person.get(handle=handle))

    def get_raw_family_data(self, handle):
        return self.dji.get_family(self.dji.Family.get(handle=handle))

    def get_raw_source_data(self, handle):
        return self.dji.get_source(self.dji.Source.get(handle=handle))

    def get_raw_repository_data(self, handle):
        return self.dji.get_repository(self.dji.Repository.get(handle=handle))

    def get_raw_note_data(self, handle):
        return self.dji.get_note(self.dji.Note.get(handle=handle))

    def get_raw_place_data(self, handle):
        return self.dji.get_place(self.dji.Place.get(handle=handle))

    def add_person(self, person, trans, set_gid=True):
        pass
        # if self.step == 0:
        #     if not person.handle:
        #         person.handle = Utils.create_id()
        #     if not person.gramps_id:
        #         person.gramps_id = self.find_next_person_gramps_id()
        #     self.lookup[person.gramps_id] = person.handle
        #     if self.dji.Person.filter(handle=person.handle).count() == 0:
        #         print "add_person:", person.handle
        #         self.dji.add_person(person.serialize())
        # else:
        #     print "update_person:", person.handle
        #     person.handle = self.lookup[person.gramps_id]
        #     self.dji.add_person_detail(person.serialize())

    def add_family(self, family, trans, set_gid=True):
        pass
        # if self.step == 0:
        #     if not family.handle:
        #         family.handle = Utils.create_id()
        #     if not family.gramps_id:
        #         family.gramps_id = self.find_next_family_gramps_id()
        #     self.lookup[family.gramps_id] = family.handle
        #     if self.dji.Family.filter(handle=family.handle).count() == 0:
        #         print "add_family:", family.handle
        #         self.dji.add_family(family.serialize())
        # else:
        #     family.handle = self.lookup[family.gramps_id]
        #     self.dji.add_family_detail(family.serialize())

    def add_source(self, source, trans, set_gid=True):
        pass
        #print "add_source:", source.handle
        #if not source.handle:
        #    source.handle = Utils.create_id()
        #    self.dji.add_source(source.serialize())
        #self.dji.add_source_detail(source.serialize())

    def add_repository(self, repository, trans, set_gid=True):
        pass
        #print "add_repository:", repository.handle
        #if not repository.handle:
        #    repository.handle = Utils.create_id()
        #    self.dji.add_repository(repository.serialize())
        #self.dji.add_repository_detail(repository.serialize())

    def add_note(self, note, trans, set_gid=True):
        pass
        #print "add_note:", note.handle
        #if not note.handle:
        #    note.handle = Utils.create_id()
        #    self.dji.add_note(note.serialize())
        #self.dji.add_note_detail(note.serialize())

    def add_place(self, place, trans, set_gid=True):
        #print "add_place:", place.handle
        pass

    def add_event(self, event, trans, set_gid=True):
        pass
        #print "add_event:", event.handle
        #if not event.handle:
        #    event.handle = Utils.create_id()
        #    self.dji.add_event(event.serialize())
        #self.dji.add_event_detail(event.serialize())

    def commit_person(self, person, trans, change_time=None):
        pass
        #print "commit_person:", person.handle
        #self.add_person(person, trans)

    def commit_family(self, family, trans, change_time=None):
        pass
        #print "commit_family:", family.handle
        #self.add_family(family, trans)

    def commit_source(self, source, trans, change_time=None):
        pass
        #print "commit_source:", source.handle
        #self.add_source(source, change_time)

    def commit_repository(self, repository, trans, change_time=None):
        pass
        #print "commit_repository:", repository.handle
        #self.add_repository(repository, change_time)

    def commit_note(self, note, trans, change_time=None):
        pass
        #print "commit_note:", note.handle
        #self.add_note(note, change_time)

    def commit_place(self, place, trans, change_time=None):
        pass
        #print "commit_place:", place.handle
        #if self.dji.Place.filter(handle=place.handle).count() == 0:
        #    self.dji.add_place(place.serialize())
        #self.dji.add_place_detail(place.serialize())

    def commit_event(self, event, change_time=None):
        pass
        #print "commit_event:", event.handle
        #self.add_event(event, change_time)

    # def find_family_from_handle(self, handle, trans):
    #     obj = gen.lib.Family()
    #     results = self.dji.Family.filter(handle=handle)
    #     if results.count() == 0:
    #         obj.handle = handle
    #         new = True
    #     else:
    #         data = self.dji.get_family(results[0])
    #         obj.unserialize(data)
    #         new = False
    #     return obj, new