mrow

src/discord/constants.ts

@@ -118,6 +118,41 @@ export function emojiUrl(id: string, animated: boolean): string {
   return `${CDN}/emojis/${id}.${animated ? "gif" : "png"}?size=32`;
 }
 
+/**
+ * Resolve a Rich Presence activity asset (`activity.assets.large_image` /
+ * `small_image`) to an actual image URL. Discord prefixes these with a
+ * scheme for "external" assets (streaming previews, proxied media); a bare
+ * hash with no prefix is a normal app-asset on the CDN.
+ */
+
+// asset URL scheme handling adapted from pxseu/lanyard-ui, MPL-2.0
+export function activityAssetUrl(raw: string | undefined | null, applicationId?: string | null): string | null {
+  if (!raw) return null;
+
+  const split = raw.split(":");
+  if (split.length < 2) {
+    // Plain hash — standard Rich Presence app-asset, needs the app id.
+    return applicationId ? `${CDN}/app-assets/${applicationId}/${raw}.png` : null;
+  }
+
+  switch (split[0]) {
+    case "mp":
+      // External Discord-proxied asset (e.g. attachment, embed image).
+      return `https://media.discordapp.net/${split.slice(1).join(":")}`;
+    case "twitch":
+      // Twitch stream preview.
+      return `https://static-cdn.jtvnw.net/previews-ttv/live_user_${split[1]}.png`;
+    case "youtube":
+      // YouTube live-stream thumbnail.
+      return `https://i.ytimg.com/vi/${split[1]}/hqdefault_live.jpg`;
+    case "spotify":
+      // Spotify album/cover art.
+      return `https://i.scdn.co/image/${split[1]}`;
+    default:
+      return applicationId ? `${CDN}/app-assets/${applicationId}/${raw}.png` : null;
+  }
+}
+
 // ---- collectibles (Shop wishlist) ---------------------------------------
 // Discord product type ids -> our human-readable kind. See Userdoccers
 // "Collectible Product Type". 1000/2000/3000 are bundle/variants/external.

src/presence.ts

@@ -3,7 +3,7 @@
  * ===================================================================== */
 
 import type { DiscordStatus, UnifiedCustomStatus, UnifiedPresence, UnifiedSpotify } from "./types";
-import { emojiUrl } from "./discord/constants";
+import { activityAssetUrl, emojiUrl } from "./discord/constants";
 
 export interface RawPresence {
   user: { id: string };
@@ -54,8 +54,29 @@ function extractCustomStatus(activities: any[]): UnifiedCustomStatus | null {
   };
 }
 
+/**
+ * Resolve an activity's `assets.large_image`/`small_image` (which can be a
+ * bare app-asset hash, or a scheme-prefixed external reference like
+ * "twitch:username" for streams) into actual, directly-loadable URLs.
+ * Leaves the original asset fields untouched and just adds the resolved
+ * `*_url` companions, so this is purely additive.
+ */
+function enrichActivityAssets(a: any): any {
+  if (!a || !a.assets) return a;
+  const appId = a.application_id ?? null;
+  return {
+    ...a,
+    assets: {
+      ...a.assets,
+      large_image_url: activityAssetUrl(a.assets.large_image, appId),
+      small_image_url: activityAssetUrl(a.assets.small_image, appId),
+    },
+  };
+}
+
 export function buildPresence(raw: RawPresence): UnifiedPresence {
-  const activities = Array.isArray(raw.activities) ? raw.activities : [];
+  const rawActivities = Array.isArray(raw.activities) ? raw.activities : [];
+  const activities = rawActivities.map(enrichActivityAssets);
   const status: DiscordStatus = raw.status ?? "offline";
   const cs = raw.client_status || {};
   const spotify = extractSpotify(activities);