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fix: #12880, refactored ap controller.list to use buildTopicsSortedSet, moved out poor man's intersect to internal method

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This commit is contained in:
Julian Lam
2024-10-29 11:40:51 -04:00
parent 4fc0ee9b76
commit 05c8ee9f02
1 changed files with 16 additions and 20 deletions
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36
src/controllers/activitypub/topics.js
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@@ -20,6 +20,17 @@ const validSorts = [
'recently_replied', 'recently_created', 'most_posts', 'most_votes', 'most_views',
];
async function getTids(data) {
// Poor man's intersect used instead of getSortedSetIntersect because the zsets are huge
const sets = await categories.buildTopicsSortedSet(data);
const mainSet = sets.shift();
let tids = await db.getSortedSetRevRange(mainSet, 0, 499);
let intersection = await Promise.all(sets.map(async set => db.isSortedSetMembers(set, tids)));
intersection = intersection.reduce((memo, cur) => memo.map((show, idx) => show && cur[idx]));
tids = tids.filter((_, idx) => intersection[idx]);
return tids.slice(data.start, data.stop + 1);
}
controller.list = async function (req, res) {
if (!req.uid) {
return helpers.redirect(res, '/recent?cid=-1', false);
@@ -30,14 +41,6 @@ controller.list = async function (req, res) {
const start = Math.max(0, (page - 1) * topicsPerPage);
const stop = start + topicsPerPage - 1;
const sortToSet = {
recently_replied: `cid:-1:tids`,
recently_created: `cid:-1:tids:create`,
most_posts: `cid:-1:tids:posts`,
most_votes: `cid:-1:tids:votes`,
most_views: `cid:-1:tids:views`,
};
const [userPrivileges, tagData, userSettings, rssToken] = await Promise.all([
privileges.categories.get('-1', req.uid),
helpers.getSelectedTag(req.query.tag),
@@ -45,16 +48,8 @@ controller.list = async function (req, res) {
user.auth.getFeedToken(req.uid),
]);
const sort = validSorts.includes(req.query.sort) ? req.query.sort : userSettings.categoryTopicSort;
let tids = await db.getSortedSetRevRange(sortToSet[sort], 0, 499);
const isMembers = await db.isSortedSetMembers(`uid:${req.uid}:inbox`, tids);
tids = tids.filter((tid, idx) => isMembers[idx]);
const count = tids.length;
tids = tids.slice(start, stop + 1);
const targetUid = await user.getUidByUserslug(req.query.author);
const data = await categories.getCategoryById({
const cidQuery = {
uid: req.uid,
cid: '-1',
start: start,
@@ -64,12 +59,13 @@ controller.list = async function (req, res) {
query: req.query,
tag: req.query.tag,
targetUid: targetUid,
});
};
const data = await categories.getCategoryById(cidQuery);
data.name = '[[activitypub:world.name]]';
delete data.children;
data.topicCount = count;
const tids = await getTids(cidQuery);
data.topicCount = tids.length;
data.topics = await topics.getTopicsByTids(tids, { uid: req.uid });
topics.calculateTopicIndices(data.topics, start);