✨ feat: World Discovery

src/main/vrchat/rawEndpoints.ts

@@ -1,4 +1,4 @@
-import type { VRChat, FavoritedWorld } from "vrchat";
+import type { VRChat, FavoritedWorld, LimitedWorld } from "vrchat";
 
 // VRChat web routes that are missing from the SDK.
 
@@ -37,3 +37,90 @@ export async function getFavoriteGroupWorlds(
   }
   return worlds;
 }
+
+interface InfoPushContentList {
+  name: string | { fallback?: string };
+  shortName?: string | null;
+  tag?: string | null;
+  sortHeading?: string;
+  sortOrder?: string;
+  sortOwnership?: string;
+  platform?: string;
+}
+
+interface InfoPushEntry {
+  id: string;
+  priority?: number;
+  startDate?: string;
+  endDate?: string;
+  data?: { contentList?: InfoPushContentList };
+}
+
+export interface WorldCategory {
+  id: string;
+  name: string;
+  tag?: string;
+  sort?: string;
+  order?: string;
+  platform?: string;
+}
+
+export async function getWorldCategories(vrc: VRChat): Promise<WorldCategory[]> {
+  const { data } = await vrc.client.get<InfoPushEntry[], unknown, true>({
+    url: "/infoPush",
+    query: { include: "user-all", require: "world-category" },
+    throwOnError: true,
+  });
+
+  // vrchat gives events the lowest priority number, but we want them first
+  return data
+    .filter((e) => e.data?.contentList)
+    .sort((a, b) => {
+      const ev = Number(isEvent(b)) - Number(isEvent(a));
+      if (ev !== 0) return ev;
+      return (a.priority ?? 0) - (b.priority ?? 0);
+    })
+    .map((e) => {
+      const cl = e.data!.contentList!;
+      return {
+        id: e.id,
+        name: categoryName(cl),
+        tag: cl.tag || undefined,
+        sort: cl.sortHeading,
+        order: cl.sortOrder,
+        platform: cl.platform === "ThisPlatformSupported" ? undefined : cl.platform,
+      };
+    });
+}
+
+function isEvent(e: InfoPushEntry): boolean {
+  const tag = e.data?.contentList?.tag ?? "";
+  return tag.startsWith("admin_") || Boolean(e.startDate) || Boolean(e.endDate);
+}
+
+function categoryName(cl: InfoPushContentList): string {
+  if (typeof cl.name === "string") return cl.name;
+  return cl.name.fallback ?? cl.shortName ?? "Worlds";
+}
+
+export async function getCategoryWorlds(
+  vrc: VRChat,
+  category: WorldCategory,
+  n: number,
+): Promise<LimitedWorld[]> {
+  const tags = ["system_approved", category.tag].filter(Boolean).join(",");
+  const { data } = await vrc.client.get<LimitedWorld[], unknown, true>({
+    url: "/worlds",
+    query: {
+      releaseStatus: "public",
+      sort: category.sort,
+      order: category.order ?? "descending",
+      tag: tags || undefined,
+      featured: false,
+      n,
+      offset: 0,
+    },
+    throwOnError: true,
+  });
+  return data;
+}

src/main/vrchat/worldService.ts

@@ -1,7 +1,12 @@
 import type { VRChat } from "vrchat";
-import type { FavoriteWorldFolder, World } from "../../shared/types/world";
+import type { DiscoverCategory, FavoriteWorldFolder, World } from "../../shared/types/world";
 import { httpStatusOf } from "./errors";
-import { getFavoriteGroupWorlds, type WorldFavoriteGroupType } from "./rawEndpoints";
+import {
+  getCategoryWorlds,
+  getFavoriteGroupWorlds,
+  getWorldCategories,
+  type WorldFavoriteGroupType,
+} from "./rawEndpoints";
 import { toWorld } from "./mappers";
 import { cachedRead } from "./cachedRead";
 import { worldStore } from "../store/worldStore";
@@ -131,6 +136,26 @@ export async function searchWorlds(query: string): Promise<World[]> {
   return worlds;
 }
 
+const DISCOVER_ROW_SIZE = 12;
+
+export async function getDiscover(): Promise<DiscoverCategory[]> {
+  const categories = await cachedRead(cacheKeys.discover(), policies.discover, async (vrc) => {
+    const cats = await getWorldCategories(vrc);
+    const rows = await Promise.all(cats.map((cat) => loadCategory(vrc, cat).catch(() => null)));
+    return rows.filter((r): r is DiscoverCategory => r !== null && r.worlds.length > 0);
+  });
+  for (const cat of categories) for (const w of cat.worlds) worldStore.addWorld(w);
+  return categories;
+}
+
+async function loadCategory(
+  vrc: VRChat,
+  cat: Awaited<ReturnType<typeof getWorldCategories>>[number],
+): Promise<DiscoverCategory> {
+  const raw = await getCategoryWorlds(vrc, cat, DISCOVER_ROW_SIZE);
+  return { id: cat.id, name: cat.name, worlds: raw.map(toWorld) };
+}
+
 export async function getUserWorlds(userId: string, isSelf: boolean): Promise<World[]> {
   const worlds = await cachedRead(
     cacheKeys.userWorlds(userId),