diff options
Diffstat (limited to 'sca-cpp/trunk/hosting/server/reviews.py')
| -rw-r--r-- | sca-cpp/trunk/hosting/server/reviews.py | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/sca-cpp/trunk/hosting/server/reviews.py b/sca-cpp/trunk/hosting/server/reviews.py new file mode 100644 index 0000000000..3c175d8a0f --- /dev/null +++ b/sca-cpp/trunk/hosting/server/reviews.py @@ -0,0 +1,156 @@ +# 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 reviews collection implementation +from util import * +from atomutil import * +from sys import debug + +# Convert a particular user id to a reviews id +def reviewsid(user): + return ("reviews", user.get(()), "user.reviews") + +# Get user reviews from the cache +def getreviews(id, cache): + debug('reviews.py::getreviews::id', id) + val = cache.get(id) + if isNil(val): + return () + reviews = cdddr(car(val)) + if not isNil(reviews) and isList(car(cadr(car(reviews)))): + # Expand list of entries + ereviews = tuple(map(lambda e: cons("'entry", e), cadr(car(reviews)))) + debug('reviews.py::getreviews::ereviews', ereviews) + return ereviews + + debug('reviews.py::getreviews::reviews', reviews) + return reviews + +# Get a review from a user's reviews +def getreview(id, reviews): + if isNil(reviews): + return None + if car(id) == entryid(reviews): + return (car(reviews),) + return getreview(id, cdr(reviews)) + +# Get reviews from the user's reviews +def get(id, user, cache, apps, ratings): + debug('reviews.py::get::id', id) + if isNil(id): + reviews = ((("'feed", ("'title", "Your Reviews"), ("'id", user.get(()))) + getreviews(reviewsid(user), cache)),) + debug('reviews.py::get::reviews', reviews) + return reviews + + # Get the requested app + app = apps.get(id) + if isNil(app): + debug('reviews.py::get', 'app not found', id) + return False + + # Get the review + review = getreview(id, getreviews(reviewsid(user), cache)) + if isNil(review): + debug('reviews.py::get', 'review not found', id) + + # Return a default empty review + return mkentry(car(id), car(id), user.get(()), now(), ()) + + debug('reviews.py::get::review', review) + return review + +# Patch an app ratings +def patchratings(id, user, ratings, oreview, nreview): + patch = ("'patch", ("'old", "0" if isNil(oreview) else cadr(content(oreview))), ("'new", "0" if isNil(nreview) else cadr(content(nreview)))) + patchentry = mkentry(car(id), car(id), user.get(()), now(), patch); + debug('reviews.py::patchratings::patchentry', patchentry) + return ratings.patch(id, patchentry) + +# Put reviews into the cache +def putreviews(id, reviews, cache): + debug('reviews.py::putreviews::id', id) + debug('reviews.py::putreviews::reviews', reviews) + val = ((("'feed", ("'title", "Your Reviews"), ("'id", cadr(id))) + reviews),) + return cache.put(id, val) + +# Put a review into a user's reviews +def putreview(id, review, reviews): + if isNil(reviews): + return review + if car(id) == entryid(reviews): + return cons(car(review), cdr(reviews)) + return cons(car(reviews), putreview(id, review, cdr(reviews))) + +# Put a review into the user's reviews +def put(id, review, user, cache, apps, ratings): + debug('reviews.py::put::id', id) + debug('reviews.py::put::review', review) + + # Get the requested app + app = apps.get(id) + if isNil(app): + debug('reviews.py::put', 'app not found', id) + return False + + reviewentry = mkentry(title(review), car(id), user.get(()), now(), content(review)) + debug('reviews.py::put::reviewentry', reviewentry) + + # Get old review + reviews = getreviews(reviewsid(user), cache) + oreview = getreview(id, reviews) + + # Update the user's reviews record + nreviews = putreview(id, reviewentry, reviews) + putreviews(reviewsid(user), nreviews, cache) + + # Update the app's ratings + return patchratings(id, user, ratings, oreview, review) + +# Delete a review from a reviews record +def deletereview(id, reviews): + if isNil(reviews): + return () + if car(id) == entryid(reviews): + return cdr(reviews) + return cons(car(reviews), deletereview(id, cdr(reviews))) + +# Delete reviews from the user's reviews record +def delete(id, user, cache, apps, ratings): + debug('reviews.py::delete::id', id) + if isNil(id): + return cache.delete(reviewsid(user)) + + # Get the requested app + app = apps.get(id) + if isNil(app): + debug('reviews.py::delete', 'app not found', id) + return False + + # Get the review + reviews = getreviews(reviewsid(user), cache) + review = getreview(id, reviews) + if isNil(review): + debug('reviews.py::delete', 'review not found', id) + return False + + # Update the user's reviews record + nreviews = deletereview(id, reviews) + putreviews(reviewsid(user), nreviews, cache) + + # Update the app's ratings + return patchratings(id, user, ratings, review, None) + |