From d3a62c13f6b4716a3a3c971175b5553e2f095b50 Mon Sep 17 00:00:00 2001
From: buttercat1791 <mjjurkoic@gmail.com>
Date: Thu, 5 Jun 2025 08:45:13 -0500
Subject: [PATCH] Add a `getParent` abstraction to `SveltePublicationTree`

---
 .../publications/svelte_publication_tree.svelte.ts        | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/lib/components/publications/svelte_publication_tree.svelte.ts b/src/lib/components/publications/svelte_publication_tree.svelte.ts
index b956fd7..eb8e65f 100644
--- a/src/lib/components/publications/svelte_publication_tree.svelte.ts
+++ b/src/lib/components/publications/svelte_publication_tree.svelte.ts
@@ -28,6 +28,14 @@ export class SveltePublicationTree {
     return this.#publicationTree.getHierarchy(address);
   }
 
+  async getParent(address: string): Promise<NDKEvent | null> {
+    const hierarchy = await this.getHierarchy(address);
+
+    // The last element in the hierarchy is the event with the given address, so the parent is the
+    // second to last element.
+    return hierarchy.at(-2) ?? null;
+  }
+
   setBookmark(address: string) {
     this.#publicationTree.setBookmark(address);
   }