feat: closes #11812, add unread public rooms into digest

public/language/en-GB/email.json

@@ -30,6 +30,8 @@
 	"reset.notify.text1": "We are notifying you that on %1, your password was changed successfully.",
 	"reset.notify.text2": "If you did not authorise this, please notify an administrator immediately.",
 
+	"digest.unread-rooms": "Unread rooms",
+	"digest.room-name-unreadcount": "%1 (%2 unread)",
 	"digest.latest_topics": "Latest topics from %1",
 	"digest.top-topics": "Top topics from %1",
 	"digest.popular-topics": "Popular topics from %1",

src/user/digest.js

@@ -8,6 +8,7 @@ const batch = require('../batch');
 const meta = require('../meta');
 const user = require('./index');
 const topics = require('../topics');
+const messaging = require('../messaging');
 const plugins = require('../plugins');
 const emailer = require('../emailer');
 const utils = require('../utils');
@@ -94,13 +95,16 @@ Digest.send = async function (data) {
 			return;
 		}
 		await Promise.all(userData.map(async (userObj) => {
-			const [notifications, topics] = await Promise.all([
+			const [publicRooms, notifications, topics] = await Promise.all([
+				getUnreadPublicRooms(userObj.uid),
 				user.notifications.getUnreadInterval(userObj.uid, data.interval),
 				getTermTopics(data.interval, userObj.uid),
 			]);
 			const unreadNotifs = notifications.filter(Boolean);
-			// If there are no notifications and no new topics, don't bother sending a digest
+			// If there are no notifications and no new topics and no unread chats, don't bother sending a digest
-			if (!unreadNotifs.length && !topics.top.length && !topics.popular.length && !topics.recent.length) {
+			if (!unreadNotifs.length &&
+				!topics.top.length && !topics.popular.length && !topics.recent.length &&
+				!publicRooms.length) {
 				return;
 			}
 
@@ -120,6 +124,7 @@ Digest.send = async function (data) {
 				username: userObj.username,
 				userslug: userObj.userslug,
 				notifications: unreadNotifs,
+				publicRooms: publicRooms,
 				recent: topics.recent,
 				topTopics: topics.top,
 				popularTopics: topics.popular,
@@ -212,3 +217,8 @@ async function getTermTopics(term, uid) {
 	});
 	return { top, popular, recent };
 }
+
+async function getUnreadPublicRooms(uid) {
+	const publicRooms = await messaging.getPublicRooms(uid, uid);
+	return publicRooms.filter(r => r && r.unread);
+}

src/views/emails/digest.tpl

@@ -43,6 +43,26 @@
 					</td>
 				</tr>
 				{{{ end }}}
+				{{{ if publicRooms.length }}}
+				<tr>
+					<td style="padding: 0px 40px; font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol; font-size: 15px; line-height: 20px; color: #555555;">
+						<h1 style="margin: 16px 0 24px 0; font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol; font-size: 18px; line-height: 21px; color: #aaaaaa; font-weight: normal;">[[email:digest.unread-rooms]]</h1>
+						<ul style="margin: 0; padding: 0;">
+							{{{ each publicRooms }}}
+							<li style="text-decoration: none; list-style-type: none; padding-bottom: 0.5em;">
+								<table role="presentation" cellspacing="0" cellpadding="0" border="0" width="100%">
+									<tr>
+										<td style="padding: 16px; font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol; line-height: 16px; color: #333333;">
+											<p style="margin: 0;"><a style="text-decoration:none !important; text-decoration:none; color: #333333;" href="{url}/chats/{./roomId}"># [[email:digest.room-name-unreadcount, {./roomName}, {./unreadCountText}]]</a></p>
+										</td>
+									</tr>
+								</table>
+							</li>
+							{{{ end }}}
+						</ul>
+					</td>
+				</tr>
+				{{{ end }}}
 				{{{ if topTopics.length }}}
 				<tr>
 					<td style="padding: 0px 40px; font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol; font-size: 15px; line-height: 20px; color: #555555;">