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# Copyright (C) 2012-2014 Aleksey Lim
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
from sugar_network import db, model
from sugar_network.toolkit.router import ACL
from sugar_network.toolkit.coroutine import this
class Post(db.Resource):
@db.indexed_property(db.Reference, prefix='C', acl=ACL.CREATE | ACL.READ)
def context(self, value):
return value
@db.indexed_property(db.Reference, prefix='A', default='',
acl=ACL.CREATE | ACL.READ)
def topic(self, value):
return value
@db.indexed_property(db.Enum, prefix='T', items=model.POST_TYPES)
def type(self, value):
return value
@db.indexed_property(db.Localized, slot=1, prefix='N', full_text=True,
acl=ACL.CREATE | ACL.READ)
def title(self, value):
return value
@db.indexed_property(db.Localized, prefix='M', full_text=True,
acl=ACL.CREATE | ACL.READ)
def message(self, value):
return value
@db.indexed_property(db.Reference, prefix='R', default='')
def solution(self, value):
return value
@db.indexed_property(db.Enum, prefix='V', items=range(5), default=0,
acl=ACL.CREATE | ACL.READ)
def vote(self, value):
return value
@vote.setter
def vote(self, value):
if value:
self._update_rating(value, +1)
return value
@db.indexed_property(db.Aggregated, prefix='D', full_text=True,
subtype=db.Localized())
def comments(self, value):
return value
@db.stored_property(db.Blob, mime_type='image/png',
default='assets/missing-logo.png')
def preview(self, value):
return value
@db.stored_property(db.Aggregated, subtype=db.Blob(),
acl=ACL.READ | ACL.INSERT | ACL.REMOVE | ACL.AUTHOR)
def attachments(self, value):
if value:
value['name'] = self['title']
return value
@db.indexed_property(db.Numeric, slot=2, default=0,
acl=ACL.READ | ACL.LOCAL)
def downloads(self, value):
return value
@db.indexed_property(model.Rating, slot=3, acl=ACL.READ | ACL.LOCAL)
def rating(self, value):
return value
def updated(self):
if self.posts.get('state') == 'deleted':
self._update_rating(self['vote'], -1)
db.Resource.updated(self)
@staticmethod
def rating_regen():
def calc_rating(**kwargs):
rating = [0, 0]
alldocs, __ = this.volume['post'].find(not_vote=0, **kwargs)
for post in alldocs:
rating[0] += 1
rating[1] += post['vote']
return rating
alldocs, __ = this.volume['context'].find()
for context in alldocs:
rating = calc_rating(topic='', context=context.guid)
this.volume['context'].update(context.guid, {'rating': rating})
alldocs, __ = this.volume['post'].find(topic='')
for topic in alldocs:
rating = calc_rating(topic=topic.guid)
this.volume['post'].update(topic.guid, {'rating': rating})
def _update_rating(self, vote, shift):
if self['topic']:
resource = this.volume['post']
guid = self['topic']
else:
resource = this.volume['context']
guid = self['context']
orig = resource[guid]['rating']
resource.update(guid, {
'rating': [orig[0] + shift, orig[1] + shift * vote],
})
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