feat: #8427, daily downvote limits

install/data/defaults.json

@@ -70,6 +70,8 @@
     "reputation:disabled": 0,
     "downvote:disabled": 0,
     "disableSignatures": 0,
+    "downvotesPerDay": 10,
+    "downvotesPerUserPerDay": 3,
     "min:rep:downvote": 0,
     "min:rep:flag": 0,
     "min:rep:profile-picture": 0,

public/language/en-GB/admin/settings/reputation.json

@@ -5,6 +5,8 @@
 	"votes-are-public": "All Votes Are Public",
 	"thresholds": "Activity Thresholds",
 	"min-rep-downvote": "Minimum reputation to downvote posts",
+	"downvotes-per-day": "Downvotes per day (set to 0 for unlimited downvotes)",
+	"downvotes-per-user-per-day": "Downvotes per user per day (set to 0 for unlimited downvotes)",
 	"min-rep-flag": "Minimum reputation to flag posts",
 	"min-rep-website": "Minimum reputation to add \"Website\" to user profile",
 	"min-rep-aboutme": "Minimum reputation to add \"About me\" to user profile",

public/language/en-GB/error.json

@@ -165,6 +165,8 @@
 	"not-enough-reputation-min-rep-cover-picture": "You do not have enough reputation to add a cover picture",
 	"already-flagged": "You have already flagged this post",
 	"self-vote": "You cannot vote on your own post",
+	"too-many-downvotes-today": "You can only downvote %1 times a day",
+	"too-many-downvotes-today-user": "You can only downvote a user %1 times a day",
 
 	"reload-failed": "NodeBB encountered a problem while reloading: \"%1\". NodeBB will continue to serve the existing client-side assets, although you should undo what you did just prior to reloading.",
 

src/posts/votes.js

@@ -119,18 +119,17 @@ module.exports = function (Posts) {
 	}
 
 	async function unvote(pid, uid, command) {
-		const [owner, voteStatus, reputation] = await Promise.all([
+		const [owner, voteStatus] = await Promise.all([
 			Posts.getPostField(pid, 'uid'),
 			Posts.hasVoted(pid, uid),
-			user.getUserField(uid, 'reputation'),
 		]);
 
 		if (parseInt(uid, 10) === parseInt(owner, 10)) {
 			throw new Error('[[error:self-vote]]');
 		}
 
-		if (command === 'downvote' && reputation < meta.config['min:rep:downvote']) {
-			throw new Error('[[error:not-enough-reputation-to-downvote]]');
+		if (command === 'downvote') {
+			await checkDownvoteLimitation(pid, uid);
 		}
 
 		let hook;
@@ -159,6 +158,33 @@ module.exports = function (Posts) {
 		return await vote(voteStatus.upvoted ? 'downvote' : 'upvote', true, pid, uid);
 	}
 
+	async function checkDownvoteLimitation(pid, uid) {
+		const oneDay = 86400000;
+		const [reputation, targetUid, downvotedPids] = await Promise.all([
+			user.getUserField(uid, 'reputation'),
+			Posts.getPostField(pid, 'uid'),
+			db.getSortedSetRevRangeByScore(
+				'uid:' + uid + ':downvote', 0, -1, '+inf', Date.now() - oneDay
+			),
+		]);
+
+		if (reputation < meta.config['min:rep:downvote']) {
+			throw new Error('[[error:not-enough-reputation-to-downvote]]');
+		}
+
+		if (meta.config.downvotesPerDay && downvotedPids.length >= meta.config.downvotesPerDay) {
+			throw new Error('[[error:too-many-downvotes-today, ' + meta.config.downvotesPerDay + ']]');
+		}
+
+		if (meta.config.downvotesPerUserPerDay) {
+			const postData = await Posts.getPostsFields(downvotedPids, ['uid']);
+			const targetDownvotes = postData.filter(p => p.uid === targetUid).length;
+			if (targetDownvotes >= meta.config.downvotesPerUserPerDay) {
+				throw new Error('[[error:too-many-downvotes-today-user, ' + meta.config.downvotesPerUserPerDay + ']]');
+			}
+		}
+	}
+
 	async function vote(type, unvote, pid, uid) {
 		uid = parseInt(uid, 10);
 		if (uid <= 0) {

src/views/admin/settings/reputation.tpl

@@ -32,7 +32,10 @@
 	<div class="col-sm-2 col-xs-12 settings-header">[[admin/settings/reputation:thresholds]]</div>
 	<div class="col-sm-10 col-xs-12">
 		<form>
-			<strong>[[admin/settings/reputation:min-rep-downvote]]</strong><br /> <input type="text" class="form-control" placeholder="0" data-field="min:rep:downvote"><br />
+			<strong>[[admin/settings/reputation:min-rep-downvote]]</strong><br /> <input type="text" class="form-control" placeholder="0"
+			data-field="min:rep:downvote"><br />
+			<strong>[[admin/settings/reputation:downvotes-per-day]]</strong><br /> <input type="text" class="form-control" placeholder="10" data-field="downvotesPerDay"><br />
+			<strong>[[admin/settings/reputation:downvotes-per-user-per-day]]</strong><br /> <input type="text" class="form-control" placeholder="3" data-field="downvotesPerUserPerDay"><br />
 			<strong>[[admin/settings/reputation:min-rep-flag]]</strong><br /> <input type="text" class="form-control" placeholder="0" data-field="min:rep:flag"><br />
 			<strong>[[admin/settings/reputation:min-rep-website]]</strong><br /> <input type="text" class="form-control" placeholder="0" data-field="min:rep:website"><br />
 			<strong>[[admin/settings/reputation:min-rep-aboutme]]</strong><br /> <input type="text" class="form-control" placeholder="0" data-field="min:rep:aboutme"><br />

test/posts.js

@@ -242,6 +242,42 @@ describe('Post\'s', function () {
 				});
 			});
 		});
+
+		it('should prevent downvoting more than total daily limit', async () => {
+			const oldValue = meta.config.downvotesPerDay;
+			meta.config.downvotesPerDay = 1;
+			let err;
+			const p1 = await topics.reply({
+				uid: voteeUid,
+				tid: topicData.tid,
+				content: 'raw content',
+			});
+			try {
+				await socketPosts.downvote({ uid: voterUid }, { pid: p1.pid, room_id: 'topic_1' });
+			} catch (_err) {
+				err = _err;
+			}
+			assert.equal(err.message, '[[error:too-many-downvotes-today, 1]]');
+			meta.config.downvotesPerDay = oldValue;
+		});
+
+		it('should prevent downvoting target user more than total daily limit', async () => {
+			const oldValue = meta.config.downvotesPerUserPerDay;
+			meta.config.downvotesPerUserPerDay = 1;
+			let err;
+			const p1 = await topics.reply({
+				uid: voteeUid,
+				tid: topicData.tid,
+				content: 'raw content',
+			});
+			try {
+				await socketPosts.downvote({ uid: voterUid }, { pid: p1.pid, room_id: 'topic_1' });
+			} catch (_err) {
+				err = _err;
+			}
+			assert.equal(err.message, '[[error:too-many-downvotes-today-user, 1]]');
+			meta.config.downvotesPerUserPerDay = oldValue;
+		});
 	});
 
 	describe('bookmarking', function () {
@@ -910,7 +946,7 @@ describe('Post\'s', function () {
 		it('should get pid index', function (done) {
 			socketPosts.getPidIndex({ uid: voterUid }, { pid: pid, tid: topicData.tid, topicPostSort: 'oldest_to_newest' }, function (err, index) {
 				assert.ifError(err);
-				assert.equal(index, 2);
+				assert.equal(index, 4);
 				done();
 			});
 		});