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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# App ratings collection implementation
from util import *
from atomutil import *
from sys import debug
# Convert an app id to an app ratings id
def ratingsid(id):
return ("ratings", car(id), "app.ratings")
# Put an app ratings into the ratings db
def put(id, ratings, user, cache, db, apps):
debug('ratings.py::put::id', id)
debug('ratings.py::put::ratings', ratings)
# Get the requested app
app = apps.get(id)
if isNull(app):
debug('ratings.py::put', 'app not found', id)
return False
# Check user
if user.get(()) != 'admin':
debug('ratings.py::put', 'not admin', user.get(()))
return False
# Update app ratings in the ratings db
ratingsentry = mkentry(title(app), car(id), author(app), now(), content(ratings))
debug('ratings.py::put::ratingsentry', ratingsentry)
return cache.put(ratingsid(id), ratingsentry)
# Patch an app ratings in the ratings db
def patch(id, ratings, user, cache, db, apps):
debug('ratings.py::patch::id', id)
debug('ratings.py::patch::ratings', ratings)
# Get the requested app
app = apps.get(id)
if isNull(app):
debug('ratings.py::patch', 'app not found', id)
return False
# Get old and new ratings
orating = cadr(assoc("'old", content(ratings)))
nrating = cadr(assoc("'new", content(ratings)))
# Configure patch script
script = """
(define author "{0}")
(define updated "{1}")
(define orating {2})
(define nrating {3})
(define (patch id e)
(define (rating x e)
(define a (tree-select-assoc (list x) e))
(if (null? a) (list x "0") (car a))
)
(define cratings (list (rating 'rating1 e) (rating 'rating2 e) (rating 'rating3 e) (rating 'rating4 e)))
(define (calcrating v i)
(define nv (+ v (if (= i orating) (- 1) (if (= i nrating) 1 0))))
(if (< nv 0) 0 nv)
)
(define (calcratings r i)
(if (null? r)
r
(cons (list (car (car r)) (calcrating (cadr (car r)) i)) (calcratings (cdr r) (+ 1 i)))
)
)
(define nratings (calcratings cratings 1))
(define neg (+ 1 (+ (* (cadr (assoc 'rating1 nratings)) 2) (cadr (assoc 'rating2 nratings)))))
(define pos (+ 1 (+ (* (cadr (assoc 'rating4 nratings)) 2) (cadr (assoc 'rating3 nratings)))))
(define arating (* 4 (/ (- (/ (+ pos 1.9208) (+ pos neg)) (/ (* 1.96 (sqrt (+ (/ (* pos neg) (+ pos neg)) 0.9604))) (+ pos neg))) (+ 1 (/ 3.8416 (+ pos neg))))))
(list (list 'entry (list 'title (cadr id)) (list 'id (cadr id)) (list 'author author) (list 'updated updated) (list 'content (cons 'ratings (cons (list 'rating arating) nratings)))))
)
""".format(author(app), now(), orating, nrating)
# Update app ratings in the ratings db
ratingsentry = mkentry(title(app), car(id), author(app), now(), ("'patch", script))
debug('ratings.py::put::ratingsentry', ratingsentry)
return cache.patch(ratingsid(id), ratingsentry)
# Get app ratings from the ratings db
def get(id, user, cache, db, apps):
debug('ratings.py::get::id', id)
# Return the top ratings
if isNull(id):
topentries = db.get((("'regex", '("ratings" .* "app.ratings")'), ("'rank", "(regexp_matches(value, '(.*\(rating )([^\)]+)(\).*)'))[2]::float"), ("'limit", 25)))
flatentries = tuple(map(lambda v: car(v), () if isNull(topentries) else topentries))
def sortkey(e):
return cadr(assoc("'rating", assoc("'ratings", assoc("'content", e))))
sortedentries = tuple(sorted(flatentries, key = sortkey, reverse = True))[0:25]
topratings = ((("'feed", ("'title", "Ratings"), ("'id", 'ratings')) + sortedentries),)
debug('ratings.py::get::topratings', topratings)
return topratings
# Get the requested app
app = apps.get(id)
if isNull(app):
debug('ratings.py::get', 'app not found', id)
# Return default ratings
return mkentry(car(id), car(id), user.get(()), now(), ())
# Get the requested ratings
ratings = cache.get(ratingsid(id))
if isNull(ratings):
debug('ratings.py::get', 'ratings not found', id)
# Return default ratings
return mkentry(title(app), car(id), author(app), now(), ())
# Return the ratings
ratingsentry = mkentry(title(app), car(id), author(app), updated(ratings), content(ratings))
debug('ratings.py::get::ratings', ratingsentry)
return ratingsentry
# Delete an app ratings from the ratings db
def delete(id, user, cache, db, apps):
debug('ratings.py::delete::id', id)
# Get the requested app
app = apps.get(id)
if isNull(app):
debug('ratings.py::delete', 'app not found', id)
return False
# Check user
if user.get(()) != 'admin':
debug('ratings.py::delete', 'not admin', user.get(()))
return False
# Delete the composite
return cache.delete(ratingsid(id))
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