perf(frontend): eliminate author profile waterfall — use thought.author directly

thoughts-frontend/app/page.tsx

@@ -5,9 +5,7 @@ import {
   getFriends,
   getMe,
   getTopFriends,
-  getUserProfile,
   Me,
-  User,
 } from "@/lib/api";
 import { PostThoughtForm } from "@/components/post-thought-form";
 import { Button } from "@/components/ui/button";
@@ -62,17 +60,6 @@ async function FeedPage({
   const { items: allThoughts, totalPages } = feedData!;
   const thoughtThreads = buildThoughtThreads(allThoughts);
 
-  const authors = [...new Set(allThoughts.map((t) => t.author.username))];
-  const userProfiles = await Promise.all(
-    authors.map((username) => getUserProfile(username, token).catch(() => null))
-  );
-
-  const authorDetails = new Map<string, { avatarUrl?: string | null }>(
-    userProfiles
-      .filter((u): u is User => !!u)
-      .map((user) => [user.username, { avatarUrl: user.avatarUrl }])
-  );
-
   const friends = (await getFriends(token)).users.map((user) => user.username);
   const topFriendsData = me
     ? await getTopFriends(me.username, token).catch(() => ({ topFriends: [] }))
@@ -111,7 +98,6 @@ async function FeedPage({
               <ThoughtThread
                 key={thought.id}
                 thought={thought}
-                authorDetails={authorDetails}
                 currentUser={me}
               />
             ))}

thoughts-frontend/app/search/page.tsx

@@ -1,6 +1,6 @@
 import type { Metadata } from "next";
 import { cookies } from "next/headers";
-import { getMe, search, lookupRemoteActor, User } from "@/lib/api";
+import { getMe, search, lookupRemoteActor } from "@/lib/api";
 
 export async function generateMetadata({
   searchParams,
@@ -51,13 +51,6 @@ export default async function SearchPage({ searchParams }: SearchPageProps) {
     token ? getMe(token).catch(() => null) : null,
   ]);
 
-  const authorDetails = new Map<string, { avatarUrl?: string | null }>();
-  if (results) {
-    results.users.forEach((user: User) => {
-      authorDetails.set(user.username, { avatarUrl: user.avatarUrl });
-    });
-  }
-
   return (
     <div className="container mx-auto max-w-2xl p-4 sm:p-6">
       <header className="my-6">
@@ -91,7 +84,6 @@ export default async function SearchPage({ searchParams }: SearchPageProps) {
             <TabsContent value="thoughts">
               <ThoughtList
                 thoughts={results.thoughts}
-                authorDetails={authorDetails}
                 currentUser={me}
               />
             </TabsContent>

thoughts-frontend/app/tags/[tagName]/page.tsx

@@ -1,7 +1,7 @@
 // app/tags/[tagName]/page.tsx
 import type { Metadata } from "next";
 import { cookies } from "next/headers";
-import { getThoughtsByTag, getUserProfile, getMe, Me, User } from "@/lib/api";
+import { getThoughtsByTag, getMe, Me } from "@/lib/api";
 
 export async function generateMetadata({
   params,
@@ -49,16 +49,6 @@ export default async function TagPage({ params }: TagPageProps) {
   const thoughtThreads = buildThoughtThreads(allThoughts);
   const me = meResult.status === "fulfilled" ? (meResult.value as Me) : null;
 
-  const authors = [...new Set(allThoughts.map((t) => t.author.username))];
-  const userProfiles = await Promise.all(
-    authors.map((username) => getUserProfile(username, token).catch(() => null))
-  );
-  const authorDetails = new Map<string, { avatarUrl?: string | null }>(
-    userProfiles
-      .filter((u): u is User => !!u)
-      .map((user) => [user.username, { avatarUrl: user.avatarUrl }])
-  );
-
   return (
     <div className="container mx-auto max-w-2xl p-4 sm:p-6">
       <header className="my-6">
@@ -72,7 +62,6 @@ export default async function TagPage({ params }: TagPageProps) {
           <ThoughtThread
             key={thought.id}
             thought={thought}
-            authorDetails={authorDetails}
             currentUser={me}
           />
         ))}

thoughts-frontend/app/thoughts/[thoughtId]/page.tsx

@@ -3,10 +3,8 @@ import { cookies } from "next/headers";
 import {
   getThoughtById,
   getThoughtThread,
-  getUserProfile,
   getMe,
   Me,
-  User,
   ThoughtThread as ThoughtThreadType,
 } from "@/lib/api";
 import { ThoughtThread } from "@/components/thought-thread";
@@ -52,14 +50,6 @@ export async function generateMetadata({
   };
 }
 
-function collectAuthors(thread: ThoughtThreadType): string[] {
-  const authors = new Set<string>([thread.author.username]);
-  for (const reply of thread.replies) {
-    collectAuthors(reply).forEach((author) => authors.add(author));
-  }
-  return Array.from(authors);
-}
-
 export default async function ThoughtPage({ params }: ThoughtPageProps) {
   const { thoughtId } = await params;
   const token = (await cookies()).get("auth_token")?.value ?? null;
@@ -76,20 +66,6 @@ export default async function ThoughtPage({ params }: ThoughtPageProps) {
   const thread = threadResult.value;
   const me = meResult.status === "fulfilled" ? (meResult.value as Me) : null;
 
-  // Fetch details for all authors in the thread efficiently
-  const authorUsernames = collectAuthors(thread);
-  const userProfiles = await Promise.all(
-    authorUsernames.map((username) =>
-      getUserProfile(username, token).catch(() => null)
-    )
-  );
-
-  const authorDetails = new Map<string, { avatarUrl?: string | null }>(
-    userProfiles
-      .filter((u): u is User => !!u)
-      .map((user) => [user.username, { avatarUrl: user.avatarUrl }])
-  );
-
   return (
     <div className="container mx-auto max-w-2xl p-4 sm:p-6">
       <header className="my-6">
@@ -98,7 +74,6 @@ export default async function ThoughtPage({ params }: ThoughtPageProps) {
       <main>
         <ThoughtThread
           thought={thread}
-          authorDetails={authorDetails}
           currentUser={me}
         />
       </main>

thoughts-frontend/app/users/[username]/page.tsx

@@ -126,9 +126,6 @@ export default async function ProfilePage({ params }: ProfilePageProps) {
   const fediverseHandle =
     user.local && apiDomain ? `@${user.username}@${apiDomain}` : null;
 
-  const authorDetails = new Map<string, { avatarUrl?: string | null }>();
-  authorDetails.set(user.username, { avatarUrl: user.avatarUrl });
-
   // Show who the profile owner follows (uses the already-fetched followingResult).
   const friends =
     followingResult.status === "fulfilled"
@@ -277,7 +274,6 @@ export default async function ProfilePage({ params }: ProfilePageProps) {
                 <ThoughtThread
                   key={thought.id}
                   thought={thought}
-                  authorDetails={authorDetails}
                   currentUser={me}
                 />
               ))}

thoughts-frontend/components/remote-user-profile.tsx

@@ -91,11 +91,6 @@ export function RemoteUserProfile({
 
   const isOwnProfile = me?.username === actor.handle;
 
-  const authorDetails = new Map<string, { avatarUrl?: string | null }>();
-  initialPosts.forEach((t) => {
-    authorDetails.set(t.author.username, { avatarUrl: actor.avatarUrl });
-  });
-
   return (
     <div>
       <div
@@ -220,7 +215,6 @@ export function RemoteUserProfile({
               {initialPosts.length > 0 ? (
                 <ThoughtList
                   thoughts={initialPosts}
-                  authorDetails={authorDetails}
                   currentUser={me}
                 />
               ) : (

thoughts-frontend/components/thought-card.tsx

@@ -7,11 +7,11 @@ import {
   CardHeader,
 } from "@/components/ui/card";
 import { UserAvatar } from "./user-avatar";
-import { deleteThought, Me, Thought } from "@/lib/api";
+import { Me, Thought } from "@/lib/api";
+import { deleteThought } from "@/app/actions/thoughts";
 import { format, formatDistanceToNow } from "date-fns";
 import { useAuth } from "@/hooks/use-auth";
 import { useState } from "react";
-import { useRouter } from "next/navigation";
 import { toast } from "sonner";
 import {
   DropdownMenu,
@@ -42,25 +42,19 @@ import { cn } from "@/lib/utils";
 
 interface ThoughtCardProps {
   thought: Thought;
-  author: {
-    username: string;
-    displayName?: string | null;
-    avatarUrl?: string | null;
-  };
   currentUser: Me | null;
   isReply?: boolean;
 }
 
 export function ThoughtCard({
   thought,
-  author,
   currentUser,
   isReply = false,
 }: ThoughtCardProps) {
+  const { author } = thought;
   const [isAlertOpen, setIsAlertOpen] = useState(false);
   const [isReplyOpen, setIsReplyOpen] = useState(false);
   const { token } = useAuth();
-  const router = useRouter();
   const timeAgo = formatDistanceToNow(new Date(thought.createdAt), {
     addSuffix: true,
   });
@@ -68,11 +62,9 @@ export function ThoughtCard({
   const isAuthor = currentUser?.username === thought.author.username;
 
   const handleDelete = async () => {
-    if (!token) return;
     try {
-      await deleteThought(thought.id, token);
+      await deleteThought(thought.id);
       toast.success("Thought deleted successfully.");
-      router.refresh();
     } catch (error) {
       console.error("Failed to delete thought:", error);
       toast.error("Failed to delete thought.");

thoughts-frontend/components/thought-list.tsx

@@ -4,15 +4,10 @@ import { Card, CardContent } from "./ui/card";
 
 interface ThoughtListProps {
   thoughts: Thought[];
-  authorDetails: Map<string, { avatarUrl?: string | null }>;
   currentUser: Me | null;
 }
 
-export function ThoughtList({
-  thoughts,
-  authorDetails,
-  currentUser,
-}: ThoughtListProps) {
+export function ThoughtList({ thoughts, currentUser }: ThoughtListProps) {
   if (thoughts.length === 0) {
     return (
       <p className="text-center text-muted-foreground pt-8">
@@ -25,21 +20,13 @@ export function ThoughtList({
     <Card>
       <CardContent className="divide-y p-0">
         <div className="space-y-6 p-4">
-          {thoughts.map((thought) => {
-            const author = {
-              username: thought.author.username,
-              displayName: thought.author.displayName,
-              ...authorDetails.get(thought.author.username),
-            };
-            return (
+          {thoughts.map((thought) => (
             <ThoughtCard
               key={thought.id}
               thought={thought}
-                author={author}
               currentUser={currentUser}
             />
-            );
-          })}
+          ))}
         </div>
       </CardContent>
     </Card>

thoughts-frontend/components/thought-thread.tsx

@@ -3,29 +3,19 @@ import { ThoughtCard } from "./thought-card";
 
 interface ThoughtThreadProps {
   thought: ThoughtThreadType;
-  authorDetails: Map<string, { avatarUrl?: string | null }>;
   currentUser: Me | null;
   isReply?: boolean;
 }
 
 export function ThoughtThread({
   thought,
-  authorDetails,
   currentUser,
   isReply = false,
 }: ThoughtThreadProps) {
-  const author = {
-    username: thought.author.username,
-    displayName: thought.author.displayName,
-    avatarUrl: thought.author.avatarUrl, // API-provided avatar (from DB COALESCE)
-    ...authorDetails.get(thought.author.username), // override for local users
-  };
-
   return (
     <div id={`thought-thread-${thought.id}`} className="flex flex-col gap-0">
       <ThoughtCard
         thought={thought}
-        author={author}
         currentUser={currentUser}
         isReply={isReply}
       />
@@ -39,7 +29,6 @@ export function ThoughtThread({
             <ThoughtThread
               key={reply.id}
               thought={reply}
-              authorDetails={authorDetails}
               currentUser={currentUser}
               isReply={true}
             />