Change post owner (#7752)

* feat: #7749, allow array of keys for setObject

* feat: sortedSetRemoveBulk

* feat: test for bulk remove

* feat: #7083, ability to change post ownership

* feat: #7083, fix tid:<tid>:posters

* feat: #7083, front end

* fix: #7752, psql methods

* fix: add missing await

* fix: maybe psql

public/language/en-GB/topic.json

@@ -26,6 +26,7 @@
 	"purge": "Purge",
 	"restore": "Restore",
 	"move": "Move",
+	"change-owner": "Change Owner",
 	"fork": "Fork",
 	"link": "Link",
 	"share": "Share",
@@ -75,6 +76,7 @@
 	"thread_tools.move": "Move Topic",
 	"thread_tools.move-posts": "Move Posts",
 	"thread_tools.move_all": "Move All",
+	"thread_tools.change_owner": "Change Owner",
 	"thread_tools.select_category": "Select Category",
 	"thread_tools.fork": "Fork Topic",
 	"thread_tools.delete": "Delete Topic",
@@ -114,6 +116,7 @@
 	"delete_posts_instruction": "Click the posts you want to delete/purge",
 	"merge_topics_instruction": "Click the topics you want to merge",
 	"move_posts_instruction": "Click the posts you want to move",
+	"change_owner_instruction": "Click the posts you want to assign to another user",
 
 	"composer.title_placeholder": "Enter your topic title here...",
 	"composer.handle_placeholder": "Name",

public/src/client/topic/change-owner.js

@@ -0,0 +1,91 @@
+'use strict';
+
+
+define('forum/topic/change-owner', [
+	'components',
+	'postSelect',
+	'autocomplete',
+], function (components, postSelect, autocomplete) {
+	var ChangeOwner = {};
+
+	var modal;
+	var commit;
+	var toUid = 0;
+	ChangeOwner.init = function (postEl) {
+		if (modal) {
+			return;
+		}
+		app.parseAndTranslate('partials/change_owner_modal', {}, function (html) {
+			modal = html;
+
+			commit = modal.find('#change_owner_commit');
+
+			$('body').append(modal);
+
+			modal.find('.close,#change_owner_cancel').on('click', closeModal);
+			modal.find('#username').on('keyup', checkButtonEnable);
+			postSelect.init(onPostToggled, {
+				allowMainPostSelect: true,
+			});
+			showPostsSelected();
+
+			if (postEl) {
+				postSelect.togglePostSelection(postEl, onPostToggled);
+			}
+
+			commit.on('click', function () {
+				changeOwner();
+			});
+
+			autocomplete.user(modal.find('#username'), function (ev, ui) {
+				toUid = ui.item.user.uid;
+				checkButtonEnable();
+			});
+		});
+	};
+
+	function showPostsSelected() {
+		if (postSelect.pids.length) {
+			modal.find('#pids').translateHtml('[[topic:fork_pid_count, ' + postSelect.pids.length + ']]');
+		} else {
+			modal.find('#pids').translateHtml('[[topic:fork_no_pids]]');
+		}
+	}
+
+	function checkButtonEnable() {
+		if (toUid && modal.find('#username').length && modal.find('#username').val().length && postSelect.pids.length) {
+			commit.removeAttr('disabled');
+		} else {
+			commit.attr('disabled', true);
+		}
+	}
+
+	function onPostToggled() {
+		checkButtonEnable();
+		showPostsSelected();
+	}
+
+	function changeOwner() {
+		if (!toUid) {
+			return;
+		}
+		socket.emit('posts.changeOwner', { pids: postSelect.pids, toUid: toUid }, function (err) {
+			if (err) {
+				return app.alertError(err.message);
+			}
+			ajaxify.refresh();
+
+			closeModal();
+		});
+	}
+
+	function closeModal() {
+		if (modal) {
+			modal.remove();
+			modal = null;
+			postSelect.disable();
+		}
+	}
+
+	return ChangeOwner;
+});

public/src/client/topic/postTools.js

@@ -207,6 +207,13 @@ define('forum/topic/postTools', [
 			});
 		});
 
+		postContainer.on('click', '[component="post/change-owner"]', function () {
+			var btn = $(this);
+			require(['forum/topic/change-owner'], function (changeOwner) {
+				changeOwner.init(btn.parents('[data-pid]'));
+			});
+		});
+
 		postContainer.on('click', '[component="post/ban-ip"]', function () {
 			var ip = $(this).attr('data-ip');
 			socket.emit('blacklist.addRule', ip, function (err) {

public/src/modules/postSelect.js

@@ -7,9 +7,13 @@ define('postSelect', ['components'], function (components) {
 
 	PostSelect.pids = [];
 
-	PostSelect.init = function (_onSelect) {
+	var allowMainPostSelect = false;
+
+	PostSelect.init = function (_onSelect, options) {
 		PostSelect.pids.length = 0;
 		onSelect = _onSelect;
+		options = options || {};
+		allowMainPostSelect = options.allowMainPostSelect || false;
 		$('#content').on('click', '[component="topic"] [component="post"]', onPostClicked);
 		disableClicksOnPosts();
 	};
@@ -30,7 +34,7 @@ define('postSelect', ['components'], function (components) {
 	PostSelect.togglePostSelection = function (post) {
 		var newPid = post.attr('data-pid');
 
-		if (parseInt(post.attr('data-index'), 10) === 0) {
+		if (!allowMainPostSelect && parseInt(post.attr('data-index'), 10) === 0) {
 			return;
 		}
 

src/database/mongo/hash.js

@@ -14,7 +14,14 @@ module.exports = function (db, module) {
 		}
 
 		const writeData = helpers.serializeData(data);
+		if (Array.isArray(key)) {
+			var bulk = db.collection('objects').initializeUnorderedBulkOp();
+			key.forEach(key => bulk.find({ _key: key }).upsert().updateOne({ $set: writeData }));
+			await bulk.execute();
+		} else {
 			await db.collection('objects').updateOne({ _key: key }, { $set: writeData }, { upsert: true, w: 1 });
+		}
+
 		cache.delObjectCache(key);
 	};
 

src/database/mongo/sorted/remove.js

@@ -49,4 +49,13 @@ module.exports = function (db, module) {
 
 		await db.collection('objects').deleteMany(query);
 	};
+
+	module.sortedSetRemoveBulk = async function (data) {
+		if (!Array.isArray(data) || !data.length) {
+			return;
+		}
+		var bulk = db.collection('objects').initializeUnorderedBulkOp();
+		data.forEach(item => bulk.find({ _key: item[0], value: String(item[1]) }).remove());
+		await bulk.execute();
+	};
 };

src/database/postgres/hash.js

@@ -14,7 +14,8 @@ module.exports = function (db, module) {
 
 		await module.transaction(async function (client) {
 			var query = client.query.bind(client);
-
+			const dataString = JSON.stringify(data);
+			async function setOne(key) {
 				await helpers.ensureLegacyObjectType(client, key, 'hash');
 				await query({
 					name: 'setObject',
@@ -23,8 +24,14 @@ INSERT INTO "legacy_hash" ("_key", "data")
 	VALUES ($1::TEXT, $2::TEXT::JSONB)
 	ON CONFLICT ("_key")
 	DO UPDATE SET "data" = "legacy_hash"."data" || $2::TEXT::JSONB`,
-				values: [key, JSON.stringify(data)],
+					values: [key, dataString],
 				});
+			}
+			if (Array.isArray(key)) {
+				await Promise.all(key.map(k => setOne(k)));
+			} else {
+				await setOne(key);
+			}
 		});
 	};
 
@@ -35,6 +42,8 @@ DO UPDATE SET "data" = "legacy_hash"."data" || $2::TEXT::JSONB`,
 
 		await module.transaction(async function (client) {
 			var query = client.query.bind(client);
+			const valueString = JSON.stringify(value);
+			async function setOne(key) {
 				await helpers.ensureLegacyObjectType(client, key, 'hash');
 				await query({
 					name: 'setObjectField',
@@ -43,8 +52,15 @@ INSERT INTO "legacy_hash" ("_key", "data")
 	VALUES ($1::TEXT, jsonb_build_object($2::TEXT, $3::TEXT::JSONB))
 	ON CONFLICT ("_key")
 	DO UPDATE SET "data" = jsonb_set("legacy_hash"."data", ARRAY[$2::TEXT], $3::TEXT::JSONB)`,
-				values: [key, field, JSON.stringify(value)],
+					values: [key, field, valueString],
 				});
+			}
+
+			if (Array.isArray(key)) {
+				await Promise.all(key.map(k => setOne(k)));
+			} else {
+				await setOne(key);
+			}
 		});
 	};
 

src/database/postgres/sorted/remove.js

@@ -69,4 +69,27 @@ DELETE FROM "legacy_zset"
 			values: [keys, min, max],
 		});
 	};
+
+	module.sortedSetRemoveBulk = async function (data) {
+		// const keys = [];
+		// const values = [];
+
+		// data.forEach(function (item) {
+		// 	keys.push(item[0]);
+		// 	values.push(item[1]);
+		// });
+
+		const promises = data.map(item => module.sortedSetRemove(item[0], item[1]));
+		await Promise.all(promises);
+
+		// TODO
+		// 		await query({
+		// 			name: 'sortedSetRemoveBulk',
+		// 			text: `
+		// DELETE FROM "legacy_zset"
+		// SELECT k, v
+		// FROM UNNEST($1::TEXT[], $2::TEXT[]) vs(k, v)`,
+		// 			values: [keys, values],
+		// 		});
+	};
 };

src/database/redis/hash.js

@@ -27,7 +27,14 @@ module.exports = function (redisClient, module) {
 		if (!Object.keys(data).length) {
 			return;
 		}
+		if (Array.isArray(key)) {
+			const batch = redisClient.batch();
+			key.forEach(k => batch.hmset(k, data));
+			await helpers.execBatch(batch);
+		} else {
 			await redisClient.async.hmset(key, data);
+		}
+
 		cache.delObjectCache(key);
 	};
 
@@ -35,7 +42,14 @@ module.exports = function (redisClient, module) {
 		if (!field) {
 			return;
 		}
+		if (Array.isArray(key)) {
+			const batch = redisClient.batch();
+			key.forEach(k => batch.hset(k, field, value));
+			await helpers.execBatch(batch);
+		} else {
 			await redisClient.async.hset(key, field, value);
+		}
+
 		cache.delObjectCache(key);
 	};
 

src/database/redis/sorted/remove.js

@@ -34,4 +34,13 @@ module.exports = function (redisClient, module) {
 		keys.forEach(k => batch.zremrangebyscore(k, min, max));
 		await helpers.execBatch(batch);
 	};
+
+	module.sortedSetRemoveBulk = async function (data) {
+		if (!Array.isArray(data) || !data.length) {
+			return;
+		}
+		const batch = redisClient.batch();
+		data.forEach(item => batch.zrem(item[0], item[1]));
+		await helpers.execBatch(batch);
+	};
 };

src/posts/user.js

@@ -4,7 +4,9 @@ var async = require('async');
 var validator = require('validator');
 var _ = require('lodash');
 
+const db = require('../database');
 var user = require('../user');
+const topics = require('../topics');
 var groups = require('../groups');
 var meta = require('../meta');
 var plugins = require('../plugins');
@@ -121,4 +123,115 @@ module.exports = function (Posts) {
 		const cids = await Posts.getCidsByPids(pids);
 		return await user.isModerator(uid, cids);
 	};
+
+	Posts.changeOwner = async function (pids, toUid) {
+		const exists = user.exists(toUid);
+		if (!exists) {
+			throw new Error('[[error:no-user]]');
+		}
+		const postData = await Posts.getPostsFields(pids, ['pid', 'tid', 'uid', 'timestamp', 'upvotes', 'downvotes']);
+		pids = postData.filter(p => p.pid && p.uid !== parseInt(toUid, 10))
+			.map(p => p.pid);
+
+		const cids = await Posts.getCidsByPids(pids);
+
+		const bulkRemove = [];
+		const bulkAdd = [];
+		let repChange = 0;
+		const postsByUser = {};
+		postData.forEach((post, i) => {
+			post.cid = cids[i];
+			repChange += post.votes;
+			bulkRemove.push(['uid:' + post.uid + ':posts', post.pid]);
+			bulkRemove.push(['cid:' + post.cid + ':uid:' + post.uid + ':pids', post.pid]);
+			bulkRemove.push(['cid:' + post.cid + ':uid:' + post.uid + ':pids:votes', post.pid]);
+
+			bulkAdd.push(['uid:' + toUid + ':posts', post.timestamp, post.pid]);
+			bulkAdd.push(['cid:' + post.cid + ':uid:' + toUid + ':pids', post.timestamp, post.pid]);
+			if (post.votes > 0) {
+				bulkAdd.push(['cid:' + post.cid + ':uid:' + toUid + ':pids:votes', post.votes, post.pid]);
+			}
+			postsByUser[post.uid] = postsByUser[post.uid] || [];
+			postsByUser[post.uid].push(post);
+		});
+
+		await Promise.all([
+			db.setObjectField(pids.map(pid => 'post:' + pid), 'uid', toUid),
+			db.sortedSetRemoveBulk(bulkRemove),
+			db.sortedSetAddBulk(bulkAdd),
+			user.incrementUserPostCountBy(toUid, pids.length),
+			updateReputation(toUid, repChange),
+			handleMainPidOwnerChange(postData, toUid),
+			reduceCounters(postsByUser),
+			updateTopicPosters(postData, toUid),
+		]);
+	};
+
+	async function reduceCounters(postsByUser) {
+		await async.eachOfSeries(postsByUser, async function (posts, uid) {
+			const repChange = posts.reduce((acc, val) => acc + val.votes, 0);
+			await Promise.all([
+				user.incrementUserPostCountBy(uid, -posts.length),
+				updateReputation(uid, -repChange),
+			]);
+		});
+	}
+
+	async function updateTopicPosters(postData, toUid) {
+		const postsByTopic = _.groupBy(postData, p => parseInt(p.tid, 10));
+		await async.eachOf(postsByTopic, async function (posts, tid) {
+			const postsByUser = _.groupBy(posts, p => parseInt(p.uid, 10));
+			await db.sortedSetIncrBy('tid:' + tid + ':posters', posts.length, toUid);
+			await async.eachOf(postsByUser, async function (posts, uid) {
+				await db.sortedSetIncrBy('tid:' + tid + ':posters', -posts.length, uid);
+			});
+		});
+	}
+
+	async function updateReputation(uid, change) {
+		if (!change) {
+			return;
+		}
+		const newReputation = await user.incrementUserFieldBy(uid, 'reputation', change);
+		await db.sortedSetAdd('users:reputation', newReputation, uid);
+	}
+
+	async function handleMainPidOwnerChange(postData, toUid) {
+		const tids = _.uniq(postData.map(p => p.tid));
+		const topicData = await topics.getTopicsFields(tids, ['mainPid', 'timestamp']);
+		const tidToTopic = _.zipObject(tids, topicData);
+
+		const mainPosts = postData.filter(p => p.pid === tidToTopic[p.tid].mainPid);
+		if (!mainPosts.length) {
+			return;
+		}
+
+		const bulkAdd = [];
+		const bulkRemove = [];
+		const postsByUser = {};
+		mainPosts.forEach((post) => {
+			bulkRemove.push(['cid:' + post.cid + ':uid:' + post.uid + ':tids', post.tid]);
+			bulkRemove.push(['uid:' + post.uid + ':topics', post.tid]);
+
+			bulkAdd.push(['cid:' + post.cid + ':uid:' + toUid + ':tids', tidToTopic[post.tid].timestamp, post.tid]);
+			bulkAdd.push(['uid:' + toUid + ':topics', tidToTopic[post.tid].timestamp, post.tid]);
+			postsByUser[post.uid] = postsByUser[post.uid] || [];
+			postsByUser[post.uid].push(post);
+		});
+
+		await Promise.all([
+			db.setObjectField(mainPosts.map(p => 'topic:' + p.tid), 'uid', toUid),
+			db.sortedSetRemoveBulk(bulkRemove),
+			db.sortedSetAddBulk(bulkAdd),
+			user.incrementUserFieldBy(toUid, 'topiccount', mainPosts.length),
+			reduceTopicCounts(postsByUser),
+		]);
+	}
+
+	async function reduceTopicCounts(postsByUser) {
+		await async.eachSeries(Object.keys(postsByUser), async function (uid) {
+			const posts = postsByUser[uid];
+			await user.incrementUserFieldBy(uid, 'topiccount', -posts.length);
+		});
+	}
 };

src/socket.io/posts/tools.js

@@ -248,4 +248,16 @@ module.exports = function (SocketPosts) {
 			},
 		}, callback);
 	}
+
+	SocketPosts.changeOwner = async function (socket, data) {
+		if (!data || !Array.isArray(data.pids) || !data.toUid) {
+			throw new Error('[[error:invalid-data]]');
+		}
+		const isAdminOrGlobalMod = user.isAdminOrGlobalMod(socket.uid);
+		if (!isAdminOrGlobalMod) {
+			throw new Error('[[error:no-privileges]]');
+		}
+
+		await posts.changeOwner(data.pids, data.toUid);
+	};
 };

test/database/hash.js

@@ -25,6 +25,14 @@ describe('Hash methods', function () {
 			});
 		});
 
+		it('should set two objects to same data', async function () {
+			const data = { foo: 'baz', test: '1' };
+			await db.setObject(['multiObject1', 'multiObject2'], data);
+			const result = await db.getObjects(['multiObject1', 'multiObject2']);
+			assert.deepStrictEqual(result[0], data);
+			assert.deepStrictEqual(result[1], data);
+		});
+
 		it('should do nothing if key is falsy', function (done) {
 			db.setObject('', { foo: 1, derp: 2 }, function (err) {
 				assert.ifError(err);
@@ -82,6 +90,14 @@ describe('Hash methods', function () {
 			});
 		});
 
+		it('should set two objects fields to same data', async function () {
+			const data = { foo: 'baz', test: '1' };
+			await db.setObjectField(['multiObject1', 'multiObject2'], 'myField', '2');
+			const result = await db.getObjects(['multiObject1', 'multiObject2']);
+			assert.deepStrictEqual(result[0].myField, '2');
+			assert.deepStrictEqual(result[1].myField, '2');
+		});
+
 		it('should work for field names with "." in them', function (done) {
 			db.setObjectField('dotObject2', 'my.dot.field', 'foo2', function (err) {
 				assert.ifError(err);

test/database/sorted.js

@@ -978,6 +978,21 @@ describe('Sorted Set methods', function () {
 				});
 			});
 		});
+
+		it('should do a bulk remove', async function () {
+			await db.sortedSetAddBulk([
+				['bulkRemove1', 1, 'value1'],
+				['bulkRemove1', 2, 'value2'],
+				['bulkRemove2', 3, 'value2'],
+			]);
+			await db.sortedSetRemoveBulk([
+				['bulkRemove1', 'value1'],
+				['bulkRemove1', 'value2'],
+				['bulkRemove2', 'value2'],
+			]);
+			const members = await db.getSortedSetsMembers(['bulkRemove1', 'bulkRemove2']);
+			assert.deepStrictEqual(members, [[], []]);
+		});
 	});
 
 	describe('sortedSetsRemove()', function () {

test/posts.js

@@ -73,6 +73,36 @@ describe('Post\'s', function () {
 		});
 	});
 
+	it('should change owner of post and topic properly', async function () {
+		const oldUid = await user.create({ username: 'olduser' });
+		const newUid = await user.create({ username: 'newuser' });
+		const postResult = await topics.post({ uid: oldUid, cid: cid, title: 'change owner', content: 'original post' });
+		const postData = await topics.reply({ uid: oldUid, tid: postResult.topicData.tid, content: 'firstReply' });
+		const pid1 = postResult.postData.pid;
+		const pid2 = postData.pid;
+
+		assert.deepStrictEqual(await db.sortedSetScores('tid:' + postResult.topicData.tid + ':posters', [oldUid, newUid]), [2, null]);
+
+		await posts.changeOwner([pid1, pid2], newUid);
+
+		assert.deepStrictEqual(await db.sortedSetScores('tid:' + postResult.topicData.tid + ':posters', [oldUid, newUid]), [0, 2]);
+
+		assert.deepStrictEqual(await posts.isOwner([pid1, pid2], oldUid), [false, false]);
+		assert.deepStrictEqual(await posts.isOwner([pid1, pid2], newUid), [true, true]);
+
+		assert.strictEqual(await user.getUserField(oldUid, 'postcount'), 0);
+		assert.strictEqual(await user.getUserField(newUid, 'postcount'), 2);
+
+		assert.strictEqual(await user.getUserField(oldUid, 'topiccount'), 0);
+		assert.strictEqual(await user.getUserField(newUid, 'topiccount'), 1);
+
+		assert.strictEqual(await db.sortedSetScore('users:postcount', oldUid), 0);
+		assert.strictEqual(await db.sortedSetScore('users:postcount', newUid), 2);
+
+		assert.strictEqual(await topics.isOwner(postResult.topicData.tid, oldUid), false);
+		assert.strictEqual(await topics.isOwner(postResult.topicData.tid, newUid), true);
+	});
+
 	it('should return falsy if post does not exist', function (done) {
 		posts.getPostData(9999, function (err, postData) {
 			assert.ifError(err);