Revert "fix: use categories.getTopicIds instead of duplicating existing logic to get world tids"

This reverts commit 7bf411383e.

src/controllers/activitypub/topics.js

@@ -2,6 +2,7 @@
 
 const nconf = require('nconf');
 
+const db = require('../../database');
 const user = require('../../user');
 const topics = require('../../topics');
 
@@ -29,6 +30,14 @@ 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),
@@ -36,8 +45,16 @@ 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 cidQuery = {
+
+	const data = await categories.getCategoryById({
 		uid: req.uid,
 		cid: '-1',
 		start: start,
@@ -47,14 +64,12 @@ 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;
 
-	const tids = await categories.getTopicIds(cidQuery);
-	data.topicCount = tids.length;
+	data.topicCount = count;
 	data.topics = await topics.getTopicsByTids(tids, { uid: req.uid });
 	topics.calculateTopicIndices(data.topics, start);