Create links to users profile in chat messages

website/server/libs/highlightMentions.js

@@ -0,0 +1,22 @@
+import {model as User} from '../models/user';
+
+const mentionRegex = new RegExp('\\B@[-\\w]+', 'g');
+
+export async function highlightMentions (text) {
+  const mentions = text.match(mentionRegex);
+  if (mentions !== null && mentions.length <= 5) {
+    const usernames = mentions.map((mention) => {
+      return mention.substr(1);
+    });
+    let members = await User
+      .find({'auth.local.username': {$in: usernames}, 'flags.verifiedUsername': true})
+      .select(['auth.local.username', '_id'])
+      .lean()
+      .exec();
+    members.forEach((member) => {
+      const username = member.auth.local.username;
+      text = text.replace(new RegExp(`@${username}\\b`, 'g'), `[@${username}](https://habitica.com/members/${member._id})`);
+    });
+  }
+  return text;
+}