Products: carry the IMVU parent's image and categories

Revisions with an IMVU parent store its public info (image, category path, gender)
from IMVU's product API, looked up after registering and in a periodic pass.
Product views gain parent, image and categories; GET /products takes category and
limit. The website shows the image on cards and product pages.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

CLAUDE.md

@@ -26,4 +26,5 @@ T5DE's hub (see README.md and docs/design.md). Related repositories, usually che
   (`t5de-proxy...`).
 - On this VM, Bun and Node are portable installs in `%LOCALAPPDATA%\Programs\bun` and `...\nodejs` (not on PATH; no
   `bunx`: use `bun x`).
-- Calls to IMVU (`apps/api/src/imvu.ts`, its public user API) are rare and rate-limited: linking and age re-checks.
+- Calls to IMVU (`apps/api/src/imvu.ts`, its public API) are rare and rate-limited: linking, age re-checks, rooms,
+  and the IMVU products T5 products derive from (`parent_info`, looked up once per revision).

apps/api/src/app.ts

@@ -2,7 +2,7 @@
 // origin (Next.js rewrites /api to here), so session cookies are first-party; T5DE's proxy calls it with a bearer
 // token.
 import { Elysia, t } from "elysia";
-import { and, desc, eq, ilike, inArray, ne, or, sql, count, schema, type Database } from "@t5de/db";
+import { and, desc, eq, ilike, inArray, ne, or, sql, count, schema, type Database, type ParentInfo } from "@t5de/db";
 import type { Auth } from "./auth";
 import { AgeError, AgeService } from "./age";
 import { imvuAgeProvider, imvuResult } from "./age/imvu";
@@ -76,7 +76,7 @@ class Limiter {
 export function createApp({ db, auth, imvu, realtime: rt, age: ageService, rooms: roomsService, apiURL }: Deps) {
   const age = ageService ?? new AgeService(db, [imvuAgeProvider(imvu)]);
   const signer = new Signer(db, apiURL ?? "http://localhost:4101");
-  const products = new Products(db, signer);
+  const products = new Products(db, signer, imvu);
   const rooms = roomsService ?? new Rooms(db, imvu);
   const realtime =
     rt ??
@@ -178,10 +178,12 @@ export function createApp({ db, auth, imvu, realtime: rt, age: ageService, rooms
     }
   };
 
+  /** `latest`: the latest revision's parent and its info (the image and categories are the parent's). */
   const productView = (
     p: typeof schema.product.$inferSelect,
     creator?: string | null,
     creatorUsername?: string | null,
+    latest?: { parent: number | null; parentInfo: ParentInfo | null } | null,
   ) => ({
     id: p.id,
     name: p.name,
@@ -190,6 +192,9 @@ export function createApp({ db, auth, imvu, realtime: rt, age: ageService, rooms
     latest: p.latest,
     creator: creator ?? creatorUsername ?? "",
     creatorUsername: creatorUsername ?? "",
+    parent: latest?.parent ?? 0,
+    image: latest?.parentInfo?.image ?? null,
+    categories: latest?.parentInfo?.categories ?? [],
     createdAt: p.createdAt.toISOString(),
     updatedAt: p.updatedAt.toISOString(),
   });
@@ -616,10 +621,17 @@ export function createApp({ db, auth, imvu, realtime: rt, age: ageService, rooms
       "/products",
       async ({ person, query }) => {
         const adult = await personAdult(person);
-        const rows = await products.list({ q: query.q, creator: query.creator, adult });
+        const rows = await products.list({ ...query, adult });
-        return { products: rows.map((r) => productView(r.product, r.creator, r.creatorUsername)) };
+        return { products: rows.map((r) => productView(r.product, r.creator, r.creatorUsername, r)) };
+      },
+      {
+        query: t.Object({
+          q: t.Optional(t.String({ maxLength: 100 })),
+          creator: t.Optional(t.String({ maxLength: 64 })),
+          category: t.Optional(t.Numeric({ minimum: 1, maximum: 2_147_483_647, multipleOf: 1 })),
+          limit: t.Optional(t.Numeric({ minimum: 1, maximum: 200, multipleOf: 1 })),
+        }),
       },
-      { query: t.Object({ q: t.Optional(t.String({ maxLength: 100 })), creator: t.Optional(t.String({ maxLength: 64 })) }) },
     )
     .get(
       "/products/:id",
@@ -627,8 +639,9 @@ export function createApp({ db, auth, imvu, realtime: rt, age: ageService, rooms
         const adult = await personAdult(person);
         const p = await productCall(() => products.get(params.id, adult));
         const lib = person ? await products.inLibrary(person.id, params.id) : undefined;
+        const latest = p.revisions.find((r) => r.number === p.product.latest);
         return {
-          product: productView(p.product, p.creator, p.creatorUsername),
+          product: productView(p.product, p.creator, p.creatorUsername, latest),
           revisions: p.revisions.map((r) => ({
             number: r.number,
             rating: r.rating,
@@ -651,7 +664,7 @@ export function createApp({ db, auth, imvu, realtime: rt, age: ageService, rooms
       async ({ me, params, body }) => {
         const p = await productCall(() => products.update(me.id, params.id, body));
         await audited(me.id, "product.edit", p.id, { fields: Object.keys(body) });
-        return { product: productView(p) };
+        return { product: productView(p, undefined, undefined, await products.latestParent(p)) };
       },
       {
         signedIn: true,
@@ -704,7 +717,7 @@ export function createApp({ db, auth, imvu, realtime: rt, age: ageService, rooms
       "/library",
       async ({ me }) => ({
         library: (await products.library(me.id)).map((l) => ({
-          product: productView(l.product, l.creator),
+          product: productView(l.product, l.creator, undefined, l),
           stayOn: l.stayOn,
           addedAt: l.addedAt.toISOString(),
         })),

apps/api/src/imvu.ts

@@ -1,6 +1,6 @@
 // IMVU's public API: who an account is, its tagline (for linking) and whether it's age verified or has Access Pass;
-// and rooms (for the rooms list). The hub calls it rarely (linking, age checks, rooms T5DE users enter) and depends
+// rooms (for the rooms list); and products (the IMVU products T5 products derive from). The hub calls it rarely
-// on it for nothing else.
+// (linking, age checks, rooms T5DE users enter, uploads) and depends on it for nothing else.
 
 export type ImvuUser = {
   id: number;
@@ -25,6 +25,13 @@ export type ImvuRoom = {
   expired: boolean;
 };
 
+/** An IMVU product's public info, as T5 products derived from it show it. */
+export type ImvuProduct = {
+  image: string | null; // https, on *.imvu.com
+  categories: { id: number; name: string }[]; // outermost first, e.g. Clothing / Clothing for Female / Tops
+  gender: string; // "female", "male", or "" (either)
+};
+
 export class NoSuchImvuUser extends Error {
   constructor() {
     super("no such IMVU account");
@@ -65,6 +72,20 @@ export class ImvuClient {
     }
   }
 
+  /**
+   * An IMVU product's public info; null if IMVU shows no such product publicly (it answers 401 for some, such as
+   * Access Pass ones). Throws ImvuUnavailable if IMVU can't be reached.
+   */
+  async product(id: number): Promise<ImvuProduct | null> {
+    if (!Number.isSafeInteger(id) || id <= 0) return null;
+    try {
+      return parseProduct(await this.get(`/product/product-${id}`, [401, 403]), id);
+    } catch (e) {
+      if (e instanceof NoSuchImvuUser) return null;
+      throw e;
+    }
+  }
+
   private async wait() {
     const now = Date.now();
     const at = Math.max(now, this.next);
@@ -72,7 +93,8 @@ export class ImvuClient {
     if (at > now) await Bun.sleep(at - now);
   }
 
-  private async get(path: string): Promise<unknown> {
+  /** GETs an IMVU API path; 404 (and the statuses in `missing`) throw NoSuchImvuUser. */
+  private async get(path: string, missing: number[] = []): Promise<unknown> {
     await this.wait();
     let response: Response;
     try {
@@ -83,7 +105,7 @@ export class ImvuClient {
     } catch (e) {
       throw new ImvuUnavailable(String(e));
     }
-    if (response.status === 404) throw new NoSuchImvuUser();
+    if (response.status === 404 || missing.includes(response.status)) throw new NoSuchImvuUser();
     if (!response.ok) throw new ImvuUnavailable(`IMVU answered ${response.status}`);
     return response.json();
   }
@@ -115,6 +137,36 @@ export function parseRoom(answer: unknown, instanceId: string): ImvuRoom | undef
   };
 }
 
+/** Whether an image address is one of IMVU's (https, on imvu.com or a subdomain). */
+export function imvuImage(v: unknown): string | null {
+  if (typeof v !== "string" || v.length > 1000) return null;
+  let url: URL;
+  try {
+    url = new URL(v.startsWith("//") ? "https:" + v : v);
+  } catch {
+    return null;
+  }
+  if (url.protocol !== "https:" || url.username || url.password || url.port) return null;
+  if (url.hostname !== "imvu.com" && !url.hostname.endsWith(".imvu.com")) return null;
+  return url.href;
+}
+
+export function parseProduct(answer: unknown, id: number): ImvuProduct | null {
+  const den = (answer as { denormalized?: Record<string, { data?: Record<string, unknown> }> })?.denormalized ?? {};
+  const entry = Object.entries(den).find(([key]) => key.endsWith(`/product/product-${id}`));
+  const d = entry?.[1].data;
+  if (!d) return null;
+  const path = Array.isArray(d.category_path) ? d.category_path : [];
+  const categories = path.slice(0, 10).flatMap((c: unknown) => {
+    const { id, name } = (c ?? {}) as { id?: unknown; name?: unknown };
+    const n = Number(id);
+    if (!Number.isSafeInteger(n) || n <= 0 || typeof name !== "string" || !name.trim()) return [];
+    return [{ id: n, name: name.trim().slice(0, 100) }];
+  });
+  const gender = d.gender === "female" || d.gender === "male" ? d.gender : "";
+  return { image: imvuImage(d.product_image), categories, gender };
+}
+
 // IMVU's "denormalized" answers: the user is the one /user/user-<id> entry.
 export function parse(answer: unknown): ImvuUser {
   const den = (answer as { denormalized?: Record<string, { data?: Record<string, unknown> }> })?.denormalized ?? {};

apps/api/src/index.ts

@@ -22,12 +22,16 @@ const webURL = env.WEB_URL ?? "http://localhost:4100";
 
 const { db } = await openDatabase(env.DATABASE_URL ?? "./data/db");
 const auth = createAuth(db, { apiURL, webURL, secret });
-const { app, age, rooms } = createApp({ db, auth, imvu: new ImvuClient(), apiURL });
+const { app, age, rooms, products } = createApp({ db, auth, imvu: new ImvuClient(), apiURL });
 app.listen({ port, hostname: env.HOST ?? "0.0.0.0" });
 
-// Age answers that can change (IMVU's) are checked again when they expire, a few at a time.
+// Age answers that can change (IMVU's) are checked again when they expire, a few at a time; revisions missing their
+// parent's info (IMVU was unavailable, or they predate it) get it, starting now.
+const parentInfo = () => products.fillParentInfo(20).catch((e) => console.error("parent info:", e));
+parentInfo();
 setInterval(() => {
   age.recheckDue(50).catch((e) => console.error("age re-checks:", e));
   rooms.recheckDue(20).catch((e) => console.error("room re-checks:", e));
+  parentInfo();
 }, 10 * 60 * 1000);
 console.log(`t5de-hub API on ${apiURL} (website ${webURL})`);

apps/api/src/products.ts

@@ -1,7 +1,23 @@
 // The product registry, catalogs and libraries (docs/products.md). The routes are in app.ts; this is what they do.
 import { createHash, timingSafeEqual } from "node:crypto";
-import { and, desc, eq, ilike, inArray, ne, or, sql, schema, type Database, type FileEntry } from "@t5de/db";
+import {
+  and,
+  desc,
+  eq,
+  gt,
+  ilike,
+  inArray,
+  isNull,
+  ne,
+  or,
+  sql,
+  schema,
+  type Database,
+  type FileEntry,
+  type ParentInfo,
+} from "@t5de/db";
 import { cleanHTML, maxDescription } from "./html";
+import type { ImvuClient } from "./imvu";
 import type { Signer } from "./keys";
 
 const { catalog, product, productRevision, hosting, library, user } = schema;
@@ -55,10 +71,17 @@ export function checkFiles(files: unknown): FileEntry[] | undefined {
 const sameFiles = (a: FileEntry[], b: FileEntry[]) =>
   a.length === b.length && a.every((f, i) => f.name === b[i]!.name && f.sha256 === b[i]!.sha256 && f.size === b[i]!.size);
 
+// A parent's info another revision looked up lately is reused rather than asking IMVU again.
+const parentInfoFresh = 7 * 24 * 60 * 60 * 1000;
+
+/** Each product's latest revision (joined on product.latest, for lists). */
+const latestJoin = and(eq(productRevision.productId, product.id), eq(productRevision.number, product.latest));
+
 export class Products {
   constructor(
     private readonly db: Database,
     private readonly signer: Signer,
+    private readonly imvu?: ImvuClient,
   ) {}
 
   // ---- catalogs ----
@@ -164,7 +187,7 @@ export class Products {
     const notes = (typeof body.notes === "string" ? body.notes.trim() : "").slice(0, 2000);
     const personId = claims.sub;
 
-    return this.db.transaction(async (tx) => {
+    const made = await this.db.transaction(async (tx) => {
       let p: Product;
       if (typeof claims.product === "string") {
         const [found] = await tx.select().from(product).where(eq(product.id, claims.product)).for("update");
@@ -209,6 +232,62 @@ export class Products {
       await tx.insert(hosting).values({ catalogId: c.id, productId: p.id, number });
       return { product: p.id, revision: number };
     });
+    // The parent's image and categories: best effort, without holding up the upload (fillParentInfo retries).
+    if (parent > 0) this.lookUpParent(made.product, made.revision, parent).catch(() => {});
+    return made;
+  }
+
+  // ---- parents (the IMVU products revisions derive from) ----
+
+  /** Looks up and stores a revision's parent info. Throws if IMVU can't be reached (the info stays null). */
+  async lookUpParent(productId: string, number: number, parent: number): Promise<ParentInfo | undefined> {
+    if (!this.imvu || parent <= 0) return undefined;
+    const since = new Date(Date.now() - parentInfoFresh).toISOString();
+    const [known] = await this.db
+      .select({ info: productRevision.parentInfo })
+      .from(productRevision)
+      .where(
+        and(
+          eq(productRevision.parent, parent),
+          sql`(${productRevision.parentInfo}->>'checkedAt')::timestamptz > ${since}::timestamptz`,
+        ),
+      )
+      .limit(1);
+    let info = known?.info ?? undefined;
+    if (!info) {
+      const p = await this.imvu.product(parent);
+      info = {
+        found: p !== null,
+        image: p?.image ?? null,
+        categories: p?.categories ?? [],
+        gender: p?.gender ?? "",
+        checkedAt: new Date().toISOString(),
+      };
+    }
+    await this.db
+      .update(productRevision)
+      .set({ parentInfo: info })
+      .where(and(eq(productRevision.productId, productId), eq(productRevision.number, number)));
+    return info;
+  }
+
+  /** Looks up parent info for revisions that have a parent and no info yet, a few at a time. */
+  async fillParentInfo(limit = 20): Promise<number> {
+    const due = await this.db
+      .select({ productId: productRevision.productId, number: productRevision.number, parent: productRevision.parent })
+      .from(productRevision)
+      .where(and(gt(productRevision.parent, 0), isNull(productRevision.parentInfo)))
+      .orderBy(desc(productRevision.createdAt))
+      .limit(limit);
+    let n = 0;
+    for (const r of due) {
+      try {
+        if (await this.lookUpParent(r.productId, r.number, r.parent)) n++;
+      } catch {
+        // IMVU unavailable: try again next time.
+      }
+    }
+    return n;
   }
 
   // ---- products ----
@@ -220,19 +299,41 @@ export class Products {
     return p;
   }
 
-  /** Products, newest first; adult ones only if adult. */
+  /**
-  async list(opts: { q?: string; creator?: string; adult: boolean; limit?: number }) {
+   * Products, newest first; adult ones only if adult. `category`: only those whose latest revision's parent is in
+   * that IMVU category (anywhere in its path). Each comes with its latest revision's parent and parent info.
+   */
+  async list(opts: { q?: string; creator?: string; category?: number; adult: boolean; limit?: number }) {
     const conds = [ne(product.latest, 0)];
     if (!opts.adult) conds.push(eq(product.rating, "general"));
     if (opts.q) conds.push(ilike(product.name, `%${opts.q.replace(/[%_\\]/g, (c) => "\\" + c)}%`));
     if (opts.creator) conds.push(eq(user.username, opts.creator.toLowerCase()));
+    if (opts.category !== undefined)
+      conds.push(sql`${productRevision.parentInfo}->'categories' @> ${JSON.stringify([{ id: opts.category }])}::jsonb`);
+    const limit = Math.max(1, Math.min(Math.trunc(opts.limit ?? 60) || 60, 200));
     return this.db
-      .select({ product, creator: user.displayUsername, creatorUsername: user.username })
+      .select({
+        product,
+        creator: user.displayUsername,
+        creatorUsername: user.username,
+        parent: productRevision.parent,
+        parentInfo: productRevision.parentInfo,
+      })
       .from(product)
       .innerJoin(user, eq(user.id, product.creatorId))
+      .leftJoin(productRevision, latestJoin)
       .where(and(...conds))
       .orderBy(desc(product.createdAt))
-      .limit(Math.min(opts.limit ?? 60, 200));
+      .limit(limit);
+  }
+
+  /** A product's latest revision's parent and parent info (for views of one product). */
+  async latestParent(p: Product) {
+    const [r] = await this.db
+      .select({ parent: productRevision.parent, parentInfo: productRevision.parentInfo })
+      .from(productRevision)
+      .where(and(eq(productRevision.productId, p.id), eq(productRevision.number, p.latest)));
+    return r;
   }
 
   async get(id: string, adult: boolean) {
@@ -294,10 +395,18 @@ export class Products {
 
   async library(personId: string) {
     return this.db
-      .select({ product, stayOn: library.stayOn, addedAt: library.addedAt, creator: user.displayUsername })
+      .select({
+        product,
+        stayOn: library.stayOn,
+        addedAt: library.addedAt,
+        creator: user.displayUsername,
+        parent: productRevision.parent,
+        parentInfo: productRevision.parentInfo,
+      })
       .from(library)
       .innerJoin(product, eq(product.id, library.productId))
       .innerJoin(user, eq(user.id, product.creatorId))
+      .leftJoin(productRevision, latestJoin)
       .where(eq(library.userId, personId))
       .orderBy(desc(library.addedAt));
   }

apps/api/test/products.test.ts

@@ -4,13 +4,23 @@ import { createLocalJWKSet, jwtVerify } from "jose";
 import { openDatabase, type Database } from "@t5de/db";
 import { createApp } from "../src/app";
 import { createAuth } from "../src/auth";
-import { ImvuClient, type ImvuUser } from "../src/imvu";
+import { ImvuClient, imvuImage, parseProduct, type ImvuUser } from "../src/imvu";
 
 const webURL = "http://web.test";
 const apiURL = "http://api.test";
 const accounts = new Map<number, ImvuUser>();
+// IMVU products by ID, as IMVU's API answers them ("down": IMVU can't be reached for it).
+const imvuProducts = new Map<number, Record<string, unknown> | "down">();
 const fakeIMVU: typeof fetch = (async (input: RequestInfo | URL) => {
   const url = new URL(String(input));
+  const pm = url.pathname.match(/^\/product\/product-(\d+)$/);
+  if (pm) {
+    const pid = Number(pm[1]);
+    const data = imvuProducts.get(pid);
+    if (data === "down") throw new Error("connection refused");
+    if (!data) return Response.json({ status: "failure", error: "NODE-001" }, { status: 404 });
+    return Response.json({ status: "success", denormalized: { [`https://api.imvu.com/product/product-${pid}`]: { data } } });
+  }
   const u = [...accounts.values()].find(
     (u) => url.pathname === `/user/user-${u.id}` || url.searchParams.get("username")?.toLowerCase() === u.username.toLowerCase(),
   );
@@ -25,11 +35,12 @@ let db: Database;
 let close: () => Promise<void>;
 let base: string;
 let stop: () => void;
+let hub: ReturnType<typeof createApp>;
 
 beforeAll(async () => {
   ({ db, close } = await openDatabase("memory"));
   const auth = createAuth(db, { apiURL, webURL, secret: "test-secret-test-secret-test-secret-1234", rateLimit: false });
-  const hub = createApp({ db, auth, imvu: new ImvuClient("http://imvu.test", fakeIMVU), apiURL });
+  hub = createApp({ db, auth, imvu: new ImvuClient("http://imvu.test", fakeIMVU), apiURL });
   hub.app.listen({ port: 0, hostname: "127.0.0.1" });
   const server = hub.app.server as unknown as { port: number; stop: () => void };
   stop = () => server.stop();
@@ -74,6 +85,9 @@ async function person(name: string, imvu?: { id: number; ageVerified: boolean })
   return p;
 }
 
+// Set by the first test for the next: the admin and an approved catalog.
+let shared: { admin: Person; catalogID: string; auth: Record<string, string> };
+
 const file = (name: string, n: number) => ({ name, sha256: n.toString(16).padStart(64, "0"), size: 100 * n });
 
 test("catalogs register uploads; products have revisions, info and libraries", async () => {
@@ -92,6 +106,7 @@ test("catalogs register uploads; products have revisions, info and libraries", a
   expect(reg.status).toBe(201);
   const catalogID = reg.json.catalog.id as string;
   const auth = { Authorization: `Catalog ${catalogID}:${reg.json.key}` };
+  shared = { admin, catalogID, auth };
   expect(reg.json.catalog.url).toBe("http://localhost:4102");
   expect((await call(undefined, "GET", "/api/v1/catalogs")).json.catalogs).toHaveLength(0);
   expect((await call(maker, "POST", "/api/v1/products/upload", { catalog: catalogID })).status).toBe(404);
@@ -171,3 +186,87 @@ test("catalogs register uploads; products have revisions, info and libraries", a
   expect((await call(kid, "DELETE", `/api/v1/library/${id}`)).status).toBe(204);
   expect((await call(kid, "GET", "/api/v1/library")).json.library).toEqual([]);
 });
+
+test("IMVU product info: parsing and image addresses", () => {
+  expect(imvuImage("https://userimages-akm.imvu.com/productdata/a.png")).toBe("https://userimages-akm.imvu.com/productdata/a.png");
+  expect(imvuImage("//userimages-akm.imvu.com/a.png")).toBe("https://userimages-akm.imvu.com/a.png");
+  for (const bad of ["http://userimages-akm.imvu.com/a.png", "https://imvu.com.evil.test/a.png", "https://evilimvu.com/a.png", "https://[email protected]/a.png", "javascript:alert(1)", 5, null])
+    expect(imvuImage(bad)).toBeNull();
+  const answer = {
+    denormalized: {
+      "https://api.imvu.com/product/product-9": {
+        data: { product_image: "https://x.imvu.com/i.png", gender: "female", category_path: [{ id: 106, name: "Clothing" }, { id: "x", name: "Bad" }, { id: 716, name: " Coats & Jackets " }] },
+      },
+    },
+  };
+  expect(parseProduct(answer, 9)).toEqual({
+    image: "https://x.imvu.com/i.png",
+    categories: [{ id: 106, name: "Clothing" }, { id: 716, name: "Coats & Jackets" }],
+    gender: "female",
+  });
+  expect(parseProduct(answer, 10)).toBeNull();
+});
+
+test("derived products carry their IMVU parent's image and categories", async () => {
+  const { catalogID, auth } = shared;
+  const dresser = await person("dresser", { id: 601, ageVerified: false });
+  const coat = {
+    product_id: 7001,
+    product_name: "Coat",
+    rating: "GA",
+    product_image: "https://userimages-akm.imvu.com/productdata/coat.png",
+    gender: "female",
+    category_path: [
+      { id: 106, name: "Clothing" },
+      { id: 40, name: "Clothing for Female" },
+      { id: 128, name: "Tops" },
+      { id: 716, name: "Coats & Jackets" },
+    ],
+  };
+  imvuProducts.set(7001, coat);
+  imvuProducts.set(7002, { ...coat, product_image: "https://elsewhere.test/hat.png", category_path: [{ id: 75, name: "Hair" }] });
+  imvuProducts.set(7003, "down");
+  const upload = async (name: string, parent: number) => {
+    const token = (await call(dresser, "POST", "/api/v1/products/upload", { catalog: catalogID })).json.token;
+    const r = await call(undefined, "POST", "/api/v1/catalog/revisions", { uploadToken: token, files: [file("index.xml", parent || 9)], rating: "general", parent, name, notes: "" }, auth);
+    expect(r.status).toBe(201);
+    return r.json.product as string;
+  };
+  const coatID = await upload("Dresser Coat", 7001);
+  const hatID = await upload("Dresser Hat", 7002);
+  const downID = await upload("Dresser Down", 7003);
+  const plainID = await upload("Dresser Plain", 0);
+  const missingID = await upload("Dresser Missing", 7999);
+
+  const page = async (id: string) => (await call(undefined, "GET", `/api/v1/products/${id}`)).json.product;
+  // Looked up in the background after registering.
+  for (let i = 0; i < 100 && (await page(coatID)).image === null; i++) await Bun.sleep(20);
+  expect(await page(coatID)).toMatchObject({ parent: 7001, image: coat.product_image, categories: coat.category_path });
+  for (let i = 0; i < 100 && (await page(hatID)).categories.length === 0; i++) await Bun.sleep(20);
+  expect(await page(hatID)).toMatchObject({ parent: 7002, image: null, categories: [{ id: 75, name: "Hair" }] });
+  expect(await page(plainID)).toMatchObject({ parent: 0, image: null, categories: [] });
+  expect(await page(downID)).toMatchObject({ parent: 7003, image: null, categories: [] });
+
+  // Lists carry the same fields; category filters by any ID in the path.
+  const list = async (qs: string) => (await call(undefined, "GET", `/api/v1/products?creator=dresser${qs}`)).json.products;
+  const names = async (qs: string) => (await list(qs)).map((p: any) => p.name).sort();
+  expect((await list("")).find((p: any) => p.id === coatID)).toMatchObject({ parent: 7001, image: coat.product_image, categories: coat.category_path });
+  expect(await names("&category=128")).toEqual(["Dresser Coat"]);
+  expect(await names("&category=106")).toEqual(["Dresser Coat"]);
+  expect(await names("&category=75")).toEqual(["Dresser Hat"]);
+  expect(await names("&category=1")).toEqual([]);
+  expect(await names("&limit=2")).toHaveLength(2);
+  expect((await call(undefined, "GET", "/api/v1/products?limit=201")).status).toBe(400);
+  expect((await call(undefined, "GET", "/api/v1/products?category=x")).status).toBe(400);
+
+  // IMVU was down for one: the periodic pass fills it in once IMVU answers; one IMVU doesn't have stays empty.
+  imvuProducts.set(7003, { ...coat, category_path: [{ id: 3114, name: "Body" }] });
+  await hub.products.fillParentInfo(50);
+  expect(await page(downID)).toMatchObject({ image: coat.product_image, categories: [{ id: 3114, name: "Body" }] });
+  expect(await page(missingID)).toMatchObject({ parent: 7999, image: null, categories: [] });
+  expect(await hub.products.fillParentInfo(50)).toBe(0);
+
+  // The library shows them too.
+  expect((await call(dresser, "PUT", `/api/v1/library/${coatID}`)).status).toBe(200);
+  expect((await call(dresser, "GET", "/api/v1/library")).json.library[0].product).toMatchObject({ image: coat.product_image });
+});

apps/web/app/products/[id]/page.tsx

@@ -1,7 +1,7 @@
 import type { Metadata } from "next";
 import Link from "next/link";
 import { ActionForm, SubmitButton } from "@/components/forms";
-import { formatSize, RatingTag } from "@/components/products";
+import { formatSize, ProductImage, RatingTag } from "@/components/products";
 import { PageHeader, Tag } from "@/components/status";
 import { DateTime } from "@/components/time";
 import { buttonVariants } from "@/components/ui/button";
@@ -30,6 +30,19 @@ export default async function ProductPage({ params }: { params: Promise<{ id: st
         </span>
       </PageHeader>
 
+      {(product.image || product.categories.length > 0) && (
+        <div className="flex flex-wrap items-center gap-4">
+          {product.image && (
+            <div className="w-40 overflow-hidden rounded-xl ring-1 ring-foreground/10">
+              <ProductImage src={product.image} />
+            </div>
+          )}
+          {product.categories.length > 0 && (
+            <p className="text-sm text-muted-foreground">{product.categories.map((c) => c.name).join(" › ")}</p>
+          )}
+        </div>
+      )}
+
       <div className="flex flex-wrap items-center gap-2">
         {me ? (
           <ActionForm action={libraryAction} fields={{ id }} className="space-y-2">

apps/web/components/products.tsx

@@ -21,15 +21,31 @@ export function formatSize(bytes: number): string {
   return `${n < 10 ? n.toFixed(1) : Math.round(n)} ${units[i]}`;
 }
 
+/** The image of the IMVU product a product derives from (IMVU's, from IMVU), if it has one. */
+export function ProductImage({ src, className }: { src: string | null | undefined; className?: string }) {
+  if (!src) return null;
+  return (
+    <img
+      src={src}
+      alt=""
+      referrerPolicy="no-referrer"
+      loading="lazy"
+      className={`aspect-[5/4] w-full bg-muted object-contain ${className ?? ""}`}
+    />
+  );
+}
+
 export function ProductCard({
   product,
   children,
 }: {
-  product: Pick<ProductSummary, "id" | "name" | "creator" | "rating" | "latest">;
+  product: Pick<ProductSummary, "id" | "name" | "creator" | "rating" | "latest" | "image" | "categories">;
   children?: React.ReactNode;
 }) {
+  const category = product.categories.at(-1)?.name;
   return (
     <Card className="h-full">
+      <ProductImage src={product.image} />
       <CardContent className="space-y-2">
         <div className="flex items-start justify-between gap-2">
           <Link href={`/products/${product.id}`} className="font-medium underline-offset-4 hover:underline">
@@ -38,7 +54,7 @@ export function ProductCard({
           <RatingTag rating={product.rating} />
         </div>
         <p className="text-xs text-muted-foreground">
-          {[product.creator && `by ${product.creator}`, `revision ${product.latest}`].filter(Boolean).join(" · ")}
+          {[product.creator && `by ${product.creator}`, category, `revision ${product.latest}`].filter(Boolean).join(" · ")}
         </p>
         {children}
       </CardContent>

docs/api.md

@@ -49,6 +49,13 @@ is. Codes: `invalid`, `signed_out`, `forbidden`, `not_found`, `no_such_imvu_acco
 | `DELETE /api/v1/account/links/:imvu` | unlink |
 | `POST /api/v1/account/signout-computers` | signs T5DE out on all their computers |
 
+## Products, catalogs and libraries
+
+The routes and tokens are in docs/products.md. Products are `{id, name, description, rating, latest, creator,
+creatorUsername, parent, image, categories, createdAt, updatedAt}`; `parent`, `image` and `categories` come from the
+latest revision (its IMVU parent's public info). `GET /api/v1/products` takes `q`, `creator`, `category` (an IMVU
+category ID) and `limit` (1-200, default 60).
+
 ## Age verification
 
 Vendor-neutral (docs/design.md, "Age"): IMVU's answer is recorded when an account is linked or checked again;

docs/products.md

@@ -59,7 +59,7 @@ registering on the hub), `WEB_ORIGIN` (the hub website, for CORS).
 | `POST /api/v1/catalogs` | register a catalog: `{name, url, contact, visibility ("public"/"private"), membership ("open"/"approval"/"invite")}` → 201 `{catalog, key}` (the key is shown once) |
 | `GET /api/v1/catalogs` | (anyone) approved public catalogs; the person's own, any status |
 | `POST /api/v1/products/upload` | `{catalog, product?}` → `{token, url}`: an upload token and the catalog's upload URL |
-| `GET /api/v1/products?q=&creator=` | (anyone) products, newest first; adult ones only for people with an adult account |
+| `GET /api/v1/products?q=&creator=&category=&limit=` | (anyone) `{products}`, newest first; adult ones only for people with an adult account. `category`: an IMVU category ID; only products whose latest revision's parent has it anywhere in its category path (e.g. 106 Clothing, 128 Tops). `limit`: 1-200, default 60 |
 | `GET /api/v1/products/:id` | (anyone, adult rule as above) `{product, revisions, inLibrary?, mine?}` |
 | `PATCH /api/v1/products/:id` | (creator) `{name?, description?, rating?}`; description is HTML, cleaned by the allowlist; rating may go general → adult |
 | `POST /api/v1/products/:id/revisions/:n/retract` | (creator) |
@@ -72,6 +72,20 @@ registering on the hub), `WEB_ORIGIN` (the hub website, for CORS).
 
 The realtime connection also tells the proxy `{"type": "library"}` when the person's library changes.
 
+A product (in lists, its page, the library) is `{id, name, description, rating, latest, creator, creatorUsername,
+parent, image, categories, createdAt, updatedAt}`. `parent`, `image` and `categories` are the latest revision's:
+`parent` is the IMVU product it derives from (0 if none); `image` (an https address on `*.imvu.com`, or null) and
+`categories` (`[{id, name}]`, outermost first, e.g. Clothing / Clothing for Female / Tops / Coats & Jackets; `[]` if
+unknown) are that IMVU product's, from IMVU's public API (`GET https://api.imvu.com/product/product-<id>`).
+
+### Parent info
+
+The hub looks up a revision's parent when the revision is registered (after it's stored; an upload never waits for or
+fails on it) and stores it with the revision (`product_revision.parent_info`: `{found, image, categories, gender,
+checkedAt}`; `found` is false when IMVU shows no such product publicly). Info another revision got for the same
+parent in the last 7 days is reused. Revisions still without it (IMVU was unavailable) are looked up at startup and
+every 10 minutes, 20 at a time.
+
 ### Console (moderators)
 
 `GET /api/v1/console/catalogs`, `POST /api/v1/console/catalogs/:id/approve`, `.../reject`.

packages/db/drizzle/0004_parent_info.sql

@@ -0,0 +1 @@
+ALTER TABLE "product_revision" ADD COLUMN "parent_info" jsonb;

packages/db/drizzle/meta/_journal.json

@@ -29,6 +29,13 @@
       "when": 1793324955738,
       "tag": "0003_products",
       "breakpoints": true
+    },
+    {
+      "idx": 4,
+      "version": "7",
+      "when": 1793347080470,
+      "tag": "0004_parent_info",
+      "breakpoints": true
     }
   ]
 }

packages/db/src/index.ts

@@ -11,7 +11,7 @@ import { fileURLToPath } from "node:url";
 import * as schema from "./schema";
 
 export { schema };
-export type { FileEntry } from "./schema";
+export type { FileEntry, ParentInfo } from "./schema";
 export * from "drizzle-orm";
 
 const migrationsFolder = fileURLToPath(new URL("../drizzle", import.meta.url));

packages/db/src/schema.ts

@@ -226,6 +226,15 @@ export const audit = pgTable(
 
 export type FileEntry = { name: string; sha256: string; size: number };
 
+/** The public info of the IMVU product a revision derives from (IMVU's API), when it was looked up. */
+export type ParentInfo = {
+  found: boolean; // false: IMVU shows no such product publicly
+  image: string | null; // https, on *.imvu.com
+  categories: { id: number; name: string }[]; // outermost first
+  gender: string; // "female", "male" or ""
+  checkedAt: string; // ISO time
+};
+
 // The hub's own signing keys (Ed25519) for the tokens catalogs and proxies check. The newest is used.
 export const signingKey = pgTable("signing_key", {
   id: text("id").primaryKey(), // the JWK's kid
@@ -283,6 +292,7 @@ export const productRevision = pgTable(
     files: jsonb("files").$type<FileEntry[]>().notNull(),
     rating: text("rating").notNull(),
     parent: bigint("parent", { mode: "number" }).notNull().default(0), // the IMVU product it derives from
+    parentInfo: jsonb("parent_info").$type<ParentInfo>(), // null until looked up (parent > 0)
     notes: text("notes").notNull().default(""),
     token: text("token").notNull(), // the hub's t5de-revision token
     uploadedBy: text("uploaded_by").references(() => user.id, { onDelete: "set null" }),