import Planka upstream

planka/server/utils/mentions.js

@@ -0,0 +1,20 @@
+/*!
+ * Copyright (c) 2024 PLANKA Software GmbH
+ * Licensed under the Fair Use License: https://github.com/plankanban/planka/blob/master/LICENSE.md
+ */
+
+const MENTION_ID_REGEX = /@\[.*?\]\((.*?)\)/g;
+const MENTION_USERNAME_REGEX = /@\[(.*?)\]\(.*?\)/g;
+
+const extractMentionIds = (text) => {
+  const matches = [...text.matchAll(MENTION_ID_REGEX)];
+  return matches.map((match) => match[1]);
+};
+
+const mentionMarkupToText = (markup) =>
+  markup.replace(MENTION_USERNAME_REGEX, (_, username) => `@${username}`);
+
+module.exports = {
+  extractMentionIds,
+  mentionMarkupToText,
+};