From 7096fe03d02f3702577bd52be085bbdea7266f17 Mon Sep 17 00:00:00 2001
From: devin ivy <devinivy@gmail.com>
Date: Fri, 11 Oct 2024 14:16:23 -0400
Subject: [PATCH] Appview: temp fix for bad pinned post values (#2875)

appview: temp fix for bad pinned post values
---
 .../bsky/src/api/app/bsky/feed/getAuthorFeed.ts | 13 +++++++------
 packages/bsky/src/util/uris.ts                  | 17 ++++++++++++++++-
 packages/bsky/src/views/index.ts                |  6 +++---
 3 files changed, 26 insertions(+), 10 deletions(-)

diff --git a/packages/bsky/src/api/app/bsky/feed/getAuthorFeed.ts b/packages/bsky/src/api/app/bsky/feed/getAuthorFeed.ts
index ea353bb0625..d58500c07c4 100644
--- a/packages/bsky/src/api/app/bsky/feed/getAuthorFeed.ts
+++ b/packages/bsky/src/api/app/bsky/feed/getAuthorFeed.ts
@@ -14,7 +14,7 @@ import {
 import { Views } from '../../../../views'
 import { DataPlaneClient } from '../../../../data-plane'
 import { parseString } from '../../../../hydration/util'
-import { uriToDid } from '../../../../util/uris'
+import { safePinnedPost, uriToDid } from '../../../../util/uris'
 import { Actor } from '../../../../hydration/actor'
 import { FeedItem, Post } from '../../../../hydration/feed'
 import { FeedType } from '../../../../proto/bsky_pb'
@@ -81,12 +81,13 @@ export const skeleton = async (inputs: {
     return { actor, filter: params.filter, items: [] }
   }
 
+  const pinnedPost = safePinnedPost(actor.profile?.pinnedPost)
   const isFirstPageRequest = !params.cursor
   const shouldInsertPinnedPost =
     isFirstPageRequest &&
     params.includePins &&
-    !!actor.profile?.pinnedPost &&
-    uriToDid(actor.profile.pinnedPost.uri) === actor.did
+    pinnedPost &&
+    uriToDid(pinnedPost.uri) === actor.did
 
   const res = await ctx.dataplane.getAuthorFeed({
     actorDid: did,
@@ -102,11 +103,11 @@ export const skeleton = async (inputs: {
       : undefined,
   }))
 
-  if (shouldInsertPinnedPost && actor.profile?.pinnedPost) {
+  if (shouldInsertPinnedPost && pinnedPost) {
     const pinnedItem = {
       post: {
-        uri: actor.profile.pinnedPost.uri,
-        cid: actor.profile.pinnedPost.cid,
+        uri: pinnedPost.uri,
+        cid: pinnedPost.cid,
       },
       authorPinned: true,
     }
diff --git a/packages/bsky/src/util/uris.ts b/packages/bsky/src/util/uris.ts
index 2884f65df54..fca731e098d 100644
--- a/packages/bsky/src/util/uris.ts
+++ b/packages/bsky/src/util/uris.ts
@@ -1,6 +1,9 @@
-import assert from 'node:assert'
 import { AtUri } from '@atproto/syntax'
 import { ids } from '../lexicon/lexicons'
+import {
+  validateMain as validateStrongRef,
+  Main as StrongRef,
+} from '../lexicon/types/com/atproto/repo/strongRef'
 
 /**
  * Convert a post URI to a threadgate URI. If the URI is not a valid
@@ -29,3 +32,15 @@ export function postUriToPostgateUri(postUri: string) {
 export function uriToDid(uri: string) {
   return new AtUri(uri).hostname
 }
+
+// @TODO temp fix for proliferation of invalid pinned post values
+export function safePinnedPost(value: unknown) {
+  if (!value) {
+    return
+  }
+  const validated = validateStrongRef(value)
+  if (!validated.success) {
+    return
+  }
+  return validated.value as StrongRef
+}
diff --git a/packages/bsky/src/views/index.ts b/packages/bsky/src/views/index.ts
index 248e343a37f..69983870756 100644
--- a/packages/bsky/src/views/index.ts
+++ b/packages/bsky/src/views/index.ts
@@ -35,7 +35,7 @@ import {
   VideoUriBuilder,
   parsePostgate,
 } from './util'
-import { uriToDid as creatorFromUri } from '../util/uris'
+import { uriToDid as creatorFromUri, safePinnedPost } from '../util/uris'
 import { isListRule } from '../lexicon/types/app/bsky/feed/threadgate'
 import { isSelfLabels } from '../lexicon/types/com/atproto/label/defs'
 import {
@@ -170,7 +170,7 @@ export class Views {
       joinedViaStarterPack: actor.profile?.joinedViaStarterPack
         ? this.starterPackBasic(actor.profile.joinedViaStarterPack.uri, state)
         : undefined,
-      pinnedPost: actor.profile?.pinnedPost,
+      pinnedPost: safePinnedPost(actor.profile?.pinnedPost),
     }
   }
 
@@ -1143,7 +1143,7 @@ export class Views {
     if (!state.ctx?.viewer || state.ctx.viewer !== authorDid) return
     const actor = state.actors?.get(authorDid)
     if (!actor) return
-    const pinnedPost = actor.profile?.pinnedPost
+    const pinnedPost = safePinnedPost(actor.profile?.pinnedPost)
     if (!pinnedPost) return undefined
     return pinnedPost.uri === uri
   }