[NEW] REST API endpoint channels.setDefault

packages/rocketchat-api/server/v1/channels.js

@@ -747,6 +747,28 @@ RocketChat.API.v1.addRoute('channels.setCustomFields', { authRequired: true }, {
 	}
 });
 
+RocketChat.API.v1.addRoute('channels.setDefault', { authRequired: true }, {
+	post() {
+		if (typeof this.bodyParams.default === 'undefined') {
+			return RocketChat.API.v1.failure('The bodyParam "default" is required', 'error-channels-setdefault-is-same');
+		}
+
+		const findResult = findChannelByIdOrName({ params: this.requestParams() });
+
+		if (findResult.default === this.bodyParams.default) {
+			return RocketChat.API.v1.failure('The channel default setting is the same as what it would be changed to.', 'error-channels-setdefault-missing-default-param');
+		}
+
+		Meteor.runAsUser(this.userId, () => {
+			Meteor.call('saveRoomSettings', findResult._id, 'default', this.bodyParams.default.toString());
+		});
+
+		return RocketChat.API.v1.success({
+			channel: RocketChat.models.Rooms.findOneById(findResult._id, { fields: RocketChat.API.v1.defaultFieldsToExclude })
+		});
+	}
+});
+
 RocketChat.API.v1.addRoute('channels.setDescription', { authRequired: true }, {
 	post() {
 		if (!this.bodyParams.description || !this.bodyParams.description.trim()) {

packages/rocketchat-i18n/i18n/en.i18n.json

@@ -731,6 +731,8 @@
   "error-avatar-invalid-url": "Invalid avatar URL: __url__",
   "error-avatar-url-handling": "Error while handling avatar setting from a URL (__url__) for __username__",
   "error-cant-invite-for-direct-room": "Can't invite user to direct rooms",
+  "error-channels-setdefault-is-same": "The channel default setting is the same as what it would be changed to.",
+  "error-channels-setdefault-missing-default-param": "The bodyParam 'default' is required",
   "error-could-not-change-email": "Could not change email",
   "error-could-not-change-name": "Could not change name",
   "error-could-not-change-username": "Could not change username",

tests/end-to-end/api/02-channels.js

@@ -727,6 +727,27 @@ describe('[Channels]', function() {
 			.end(done);
 	});
 
+	it('/channels.setDefault', async(done) => {
+		const roomInfo = await getRoomInfo(channel._id);
+
+		request.post(api('channels.setDefault'))
+			.set(credentials)
+			.send({
+				roomId: channel._id,
+				default: true
+			})
+			.expect('Content-Type', 'application/json')
+			.expect(200)
+			.expect((res) => {
+				expect(res.body).to.have.property('success', true);
+				expect(res.body).to.have.nested.property('channel._id');
+				expect(res.body).to.have.nested.property('channel.name', `EDITED${ apiPublicChannelName }`);
+				expect(res.body).to.have.nested.property('channel.t', 'c');
+				expect(res.body).to.have.nested.property('channel.msgs', roomInfo.channel.msgs);
+			})
+			.end(done);
+	});
+
 	it('/channels.leave', async(done) => {
 		const roomInfo = await getRoomInfo(channel._id);