feat: internal page links and mentions (#604)

* Work on mentions

* fix: properly parse page slug

* fix editor suggestion bugs

* mentions must start with whitespace

* add icon to page mention render

* feat: backlinks - WIP

* UI - WIP

* permissions check
* use FTS for page suggestion

* cleanup

* WIP

* page title fallback

* feat: handle internal link paste

* link styling

* WIP

* Switch back to LIKE operator for search suggestion

* WIP
* scope to workspaceId
* still create link for pages not found

* select necessary columns

* cleanups

apps/server/src/common/helpers/prosemirror/utils.ts

@@ -0,0 +1,58 @@
+import { Node } from '@tiptap/pm/model';
+import { jsonToNode } from '../../../collaboration/collaboration.util';
+
+export interface MentionNode {
+  id: string;
+  label: string;
+  entityType: 'user' | 'page';
+  entityId: string;
+  creatorId: string;
+}
+
+export function extractMentions(prosemirrorJson: any) {
+  const mentionList: MentionNode[] = [];
+  const doc = jsonToNode(prosemirrorJson);
+
+  doc.descendants((node: Node) => {
+    if (node.type.name === 'mention') {
+      if (
+        node.attrs.id &&
+        !mentionList.some((mention) => mention.id === node.attrs.id)
+      ) {
+        mentionList.push({
+          id: node.attrs.id,
+          label: node.attrs.label,
+          entityType: node.attrs.entityType,
+          entityId: node.attrs.entityId,
+          creatorId: node.attrs.creatorId,
+        });
+      }
+    }
+  });
+  return mentionList;
+}
+
+export function extractUserMentions(mentionList: MentionNode[]): MentionNode[] {
+  const userList = [];
+  for (const mention of mentionList) {
+    if (mention.entityType === 'user') {
+      userList.push(mention);
+    }
+  }
+  return userList as MentionNode[];
+}
+
+export function extractPageMentions(mentionList: MentionNode[]): MentionNode[] {
+  const pageMentionList = [];
+  for (const mention of mentionList) {
+    if (
+      mention.entityType === 'page' &&
+      !pageMentionList.some(
+        (pageMention) => pageMention.entityId === mention.entityId,
+      )
+    ) {
+      pageMentionList.push(mention);
+    }
+  }
+  return pageMentionList as MentionNode[];
+}