diff --git a/src/api/topics.js b/src/api/topics.js
index cee48c87bf6e..bda48d59daae 100644
--- a/src/api/topics.js
+++ b/src/api/topics.js
@@ -4,6 +4,8 @@ const user = require('../user');
 const topics = require('../topics');
 const posts = require('../posts');
 const meta = require('../meta');
+const events = require('../events');
+const privileges = require('../privileges');
 
 const controllerHelpers = require('../controllers/helpers');
 const socketHelpers = require('../socket.io/helpers');
@@ -75,3 +77,84 @@ topicsAPI.reply = async function (caller, data) {
 
 	return postObj[0];
 };
+
+topicsAPI.delete = async function (caller, data) {
+	await doTopicAction('delete', 'event:topic_deleted', caller, {
+		tids: [data.tid],
+	});
+};
+
+topicsAPI.restore = async function (caller, data) {
+	await doTopicAction('restore', 'event:topic_restored', caller, {
+		tids: [data.tid],
+	});
+};
+
+topicsAPI.purge = async function (caller, data) {
+	await doTopicAction('purge', 'event:topic_purged', caller, {
+		tids: [data.tid],
+	});
+};
+
+topicsAPI.pin = async function (caller, data) {
+	await doTopicAction('pin', 'event:topic_pinned', caller, {
+		tids: [data.tid],
+	});
+};
+
+topicsAPI.unpin = async function (caller, data) {
+	await doTopicAction('unpin', 'event:topic_unpinned', caller, {
+		tids: [data.tid],
+	});
+};
+
+topicsAPI.lock = async function (caller, data) {
+	await doTopicAction('lock', 'event:topic_locked', caller, {
+		tids: [data.tid],
+	});
+};
+
+topicsAPI.unlock = async function (caller, data) {
+	await doTopicAction('unlock', 'event:topic_unlocked', caller, {
+		tids: [data.tid],
+	});
+};
+
+async function doTopicAction(action, event, caller, { tids }) {
+	if (!Array.isArray(tids)) {
+		throw new Error('[[error:invalid-tid]]');
+	}
+
+	const exists = (await Promise.all(tids.map(async tid => await topics.exists(tid)))).every(Boolean);
+	if (!exists) {
+		throw new Error('[[error:no-topic]]');
+	}
+
+	if (typeof topics.tools[action] !== 'function') {
+		return;
+	}
+
+	const uids = await user.getUidsFromSet('users:online', 0, -1);
+
+	await Promise.all(tids.map(async function (tid) {
+		const title = await topics.getTopicField(tid, 'title');
+		const data = await topics.tools[action](tid, caller.uid);
+		const notifyUids = await privileges.categories.filterUids('topics:read', data.cid, uids);
+		socketHelpers.emitToUids(event, data, notifyUids);
+		await logTopicAction(action, caller, tid, title);
+	}));
+}
+
+async function logTopicAction(action, req, tid, title) {
+	var actionsToLog = ['delete', 'restore', 'purge'];
+	if (!actionsToLog.includes(action)) {
+		return;
+	}
+	await events.log({
+		type: 'topic-' + action,
+		uid: req.uid,
+		ip: req.ip,
+		tid: tid,
+		title: String(title),
+	});
+}
diff --git a/src/controllers/write/topics.js b/src/controllers/write/topics.js
index 543fe3fd58b8..ff35ca62c268 100644
--- a/src/controllers/write/topics.js
+++ b/src/controllers/write/topics.js
@@ -2,12 +2,8 @@
 
 const api = require('../../api');
 const topics = require('../../topics');
-const user = require('../../user');
-const events = require('../../events');
-const privileges = require('../../privileges');
 
 const helpers = require('../helpers');
-const socketHelpers = require('../../socket.io/helpers');
 
 const Topics = module.exports;
 
@@ -26,51 +22,37 @@ Topics.reply = async (req, res) => {
 };
 
 Topics.delete = async (req, res) => {
-	await doTopicAction('delete', 'event:topic_deleted', req, {
-		tids: [req.params.tid],
-	});
+	await api.topics.delete(req, req.params);
 	helpers.formatApiResponse(200, res);
 };
 
 Topics.restore = async (req, res) => {
-	await doTopicAction('restore', 'event:topic_restored', req, {
-		tids: [req.params.tid],
-	});
+	await api.topics.restore(req, req.params);
 	helpers.formatApiResponse(200, res);
 };
 
 Topics.purge = async (req, res) => {
-	await doTopicAction('purge', 'event:topic_purged', req, {
-		tids: [req.params.tid],
-	});
+	await api.topics.purge(req, req.params);
 	helpers.formatApiResponse(200, res);
 };
 
 Topics.pin = async (req, res) => {
-	await doTopicAction('pin', 'event:topic_pinned', req, {
-		tids: [req.params.tid],
-	});
+	await api.topics.pin(req, req.params);
 	helpers.formatApiResponse(200, res);
 };
 
 Topics.unpin = async (req, res) => {
-	await doTopicAction('unpin', 'event:topic_unpinned', req, {
-		tids: [req.params.tid],
-	});
+	await api.topics.unpin(req, req.params);
 	helpers.formatApiResponse(200, res);
 };
 
 Topics.lock = async (req, res) => {
-	await doTopicAction('lock', 'event:topic_locked', req, {
-		tids: [req.params.tid],
-	});
+	await api.topics.lock(req, req.params);
 	helpers.formatApiResponse(200, res);
 };
 
 Topics.unlock = async (req, res) => {
-	await doTopicAction('unlock', 'event:topic_unlocked', req, {
-		tids: [req.params.tid],
-	});
+	await api.topics.unlock(req, req.params);
 	helpers.formatApiResponse(200, res);
 };
 
@@ -98,37 +80,3 @@ Topics.deleteTags = async (req, res) => {
 	await topics.deleteTopicTags(req.params.tid);
 	helpers.formatApiResponse(200, res);
 };
-
-async function doTopicAction(action, event, socket, { tids }) {
-	if (!Array.isArray(tids)) {
-		throw new Error('[[error:invalid-tid]]');
-	}
-
-	if (typeof topics.tools[action] !== 'function') {
-		return;
-	}
-
-	const uids = await user.getUidsFromSet('users:online', 0, -1);
-
-	await Promise.all(tids.map(async function (tid) {
-		const title = await topics.getTopicField(tid, 'title');
-		const data = await topics.tools[action](tid, socket.uid);
-		const notifyUids = await privileges.categories.filterUids('topics:read', data.cid, uids);
-		socketHelpers.emitToUids(event, data, notifyUids);
-		await logTopicAction(action, socket, tid, title);
-	}));
-}
-
-async function logTopicAction(action, req, tid, title) {
-	var actionsToLog = ['delete', 'restore', 'purge'];
-	if (!actionsToLog.includes(action)) {
-		return;
-	}
-	await events.log({
-		type: 'topic-' + action,
-		uid: req.uid,
-		ip: req.ip,
-		tid: tid,
-		title: String(title),
-	});
-}
diff --git a/src/routes/write/topics.js b/src/routes/write/topics.js
index 17637e066c32..b46de2f36518 100644
--- a/src/routes/write/topics.js
+++ b/src/routes/write/topics.js
@@ -12,16 +12,16 @@ module.exports = function () {
 
 	setupApiRoute(router, 'post', '/', [...middlewares, middleware.checkRequired.bind(null, ['cid', 'title', 'content'])], controllers.write.topics.create);
 	setupApiRoute(router, 'post', '/:tid', [...middlewares, middleware.checkRequired.bind(null, ['content']), middleware.assert.topic], controllers.write.topics.reply);
-	setupApiRoute(router, 'delete', '/:tid', [...middlewares, middleware.assert.topic], controllers.write.topics.purge);
+	setupApiRoute(router, 'delete', '/:tid', [...middlewares], controllers.write.topics.purge);
 
-	setupApiRoute(router, 'put', '/:tid/state', [...middlewares, middleware.assert.topic], controllers.write.topics.restore);
-	setupApiRoute(router, 'delete', '/:tid/state', [...middlewares, middleware.assert.topic], controllers.write.topics.delete);
+	setupApiRoute(router, 'put', '/:tid/state', [...middlewares], controllers.write.topics.restore);
+	setupApiRoute(router, 'delete', '/:tid/state', [...middlewares], controllers.write.topics.delete);
 
-	setupApiRoute(router, 'put', '/:tid/pin', [...middlewares, middleware.assert.topic], controllers.write.topics.pin);
-	setupApiRoute(router, 'delete', '/:tid/pin', [...middlewares, middleware.assert.topic], controllers.write.topics.unpin);
+	setupApiRoute(router, 'put', '/:tid/pin', [...middlewares], controllers.write.topics.pin);
+	setupApiRoute(router, 'delete', '/:tid/pin', [...middlewares], controllers.write.topics.unpin);
 
-	setupApiRoute(router, 'put', '/:tid/lock', [...middlewares, middleware.assert.topic], controllers.write.topics.lock);
-	setupApiRoute(router, 'delete', '/:tid/lock', [...middlewares, middleware.assert.topic], controllers.write.topics.unlock);
+	setupApiRoute(router, 'put', '/:tid/lock', [...middlewares], controllers.write.topics.lock);
+	setupApiRoute(router, 'delete', '/:tid/lock', [...middlewares], controllers.write.topics.unlock);
 
 	setupApiRoute(router, 'put', '/:tid/follow', [...middlewares, middleware.assert.topic], controllers.write.topics.follow);
 	setupApiRoute(router, 'delete', '/:tid/follow', [...middlewares, middleware.assert.topic], controllers.write.topics.unfollow);
diff --git a/src/socket.io/topics/tools.js b/src/socket.io/topics/tools.js
index 3e7a3a2e0950..f4181a5d45c0 100644
--- a/src/socket.io/topics/tools.js
+++ b/src/socket.io/topics/tools.js
@@ -1,11 +1,9 @@
 'use strict';
 
-const user = require('../../user');
+const api = require('../../api');
 const topics = require('../../topics');
-const events = require('../../events');
 const privileges = require('../../privileges');
 const plugins = require('../../plugins');
-const socketHelpers = require('../helpers');
 const sockets = require('..');
 
 module.exports = function (SocketTopics) {
@@ -36,77 +34,39 @@ module.exports = function (SocketTopics) {
 
 	SocketTopics.delete = async function (socket, data) {
 		sockets.warnDeprecated(socket, 'DELETE /api/v3/topics/state');
-		await SocketTopics.doTopicAction('delete', 'event:topic_deleted', socket, data);
+		await api.topics.delete(socket, data);
 	};
 
 	SocketTopics.restore = async function (socket, data) {
 		sockets.warnDeprecated(socket, 'PUT /api/v3/topics/state');
-		await SocketTopics.doTopicAction('restore', 'event:topic_restored', socket, data);
+		await api.topics.restore(socket, data);
 	};
 
 	SocketTopics.purge = async function (socket, data) {
 		sockets.warnDeprecated(socket, 'DELETE /api/v3/topics');
-		await SocketTopics.doTopicAction('purge', 'event:topic_purged', socket, data);
+		await api.topics.purge(socket, data);
 	};
 
 	SocketTopics.lock = async function (socket, data) {
 		sockets.warnDeprecated(socket, 'PUT /api/v3/topics/lock');
-		await SocketTopics.doTopicAction('lock', 'event:topic_locked', socket, data);
+		await api.topics.lock(socket, data);
 	};
 
 	SocketTopics.unlock = async function (socket, data) {
 		sockets.warnDeprecated(socket, 'DELETE /api/v3/topics/lock');
-		await SocketTopics.doTopicAction('unlock', 'event:topic_unlocked', socket, data);
+		await api.topics.unlock(socket, data);
 	};
 
 	SocketTopics.pin = async function (socket, data) {
 		sockets.warnDeprecated(socket, 'PUT /api/v3/topics/pin');
-		await SocketTopics.doTopicAction('pin', 'event:topic_pinned', socket, data);
+		await api.topics.pin(socket, data);
 	};
 
 	SocketTopics.unpin = async function (socket, data) {
 		sockets.warnDeprecated(socket, 'DELETE /api/v3/topics/pin');
-		await SocketTopics.doTopicAction('unpin', 'event:topic_unpinned', socket, data);
+		await api.topics.unpin(socket, data);
 	};
 
-	SocketTopics.doTopicAction = async function (action, event, socket, data) {
-		if (!socket.uid) {
-			throw new Error('[[error:no-privileges]]');
-		}
-
-		if (!data || !Array.isArray(data.tids)) {
-			throw new Error('[[error:invalid-tid]]');
-		}
-
-		if (typeof topics.tools[action] !== 'function') {
-			return;
-		}
-
-		const uids = await user.getUidsFromSet('users:online', 0, -1);
-
-		await Promise.all(data.tids.map(async function (tid) {
-			const title = await topics.getTopicField(tid, 'title');
-			const data = await topics.tools[action](tid, socket.uid);
-			const notifyUids = await privileges.categories.filterUids('topics:read', data.cid, uids);
-			socketHelpers.emitToUids(event, data, notifyUids);
-			await logTopicAction(action, socket, tid, title);
-		}));
-	};
-
-	async function logTopicAction(action, socket, tid, title) {
-		var actionsToLog = ['delete', 'restore', 'purge'];
-		if (!actionsToLog.includes(action)) {
-			return;
-		}
-		await events.log({
-			type: 'topic-' + action,
-			uid: socket.uid,
-			ip: socket.ip,
-			tid: tid,
-			title: String(title),
-		});
-	}
-
 	SocketTopics.orderPinnedTopics = async function (socket, data) {
 		if (!Array.isArray(data)) {
 			throw new Error('[[error:invalid-data]]');