feat: add room mentions and clickable room/relay refs

src/app/editor/RoomReferenceNodeView.ts

@@ -0,0 +1,28 @@
+import type {NodeViewRendererProps} from "@tiptap/core"
+import {deriveRoom} from "@app/core/state"
+
+export const RoomReferenceNodeView = ({node}: NodeViewRendererProps) => {
+  const dom = document.createElement("span")
+  const url = typeof node.attrs.url === "string" ? node.attrs.url : ""
+  const h = typeof node.attrs.h === "string" ? node.attrs.h : ""
+  const room = deriveRoom(url, h)
+
+  dom.classList.add("tiptap-object")
+
+  const unsubRoom = room.subscribe($room => {
+    dom.textContent = `~${$room.name || h}`
+  })
+
+  return {
+    dom,
+    destroy: () => {
+      unsubRoom()
+    },
+    selectNode() {
+      dom.classList.add("tiptap-active")
+    },
+    deselectNode() {
+      dom.classList.remove("tiptap-active")
+    },
+  }
+}