Initial Commit

server/utils/twitch.ts

@@ -0,0 +1,53 @@
+import type { TwitchTarget } from '../../../shared/utils/twitch'
+
+// Öffentliche Client-ID der Twitch-Web-App (gql.twitch.tv wird von twitch.tv selbst genutzt)
+const TWITCH_CLIENT_ID = 'kimne78kx3ncx6brgo4mv6wki5h1ko'
+
+function gqlStr(value: string): string {
+  return value.replace(/\\/g, '\\\\').replace(/"/g, '\\"')
+}
+
+interface TwitchPreview {
+  image: string | null
+  title: string | null
+}
+
+// Echtes Twitch-Thumbnail/-Titel via öffentlicher GQL-API — og:image liefert
+// bei Twitch nur das generische Logo
+export async function fetchTwitchPreview(target: TwitchTarget): Promise<TwitchPreview> {
+  try {
+    const query = target.kind === 'video'
+      ? `{ video(id: "${gqlStr(target.id)}") { previewThumbnailURL(height: 360, width: 640) title } }`
+      : target.kind === 'clip'
+        ? `{ clip(slug: "${gqlStr(target.id)}") { thumbnailURL title } }`
+        : `{ user(login: "${gqlStr(target.id.toLowerCase())}") { displayName broadcastSettings { title } profileImageURL(width: 300) stream { previewImageURL(width: 640, height: 360) } } }`
+
+    const res = await fetch('https://gql.twitch.tv/gql', {
+      method: 'POST',
+      signal: AbortSignal.timeout(5000),
+      headers: {
+        'content-type': 'application/json',
+        'client-id': TWITCH_CLIENT_ID,
+      },
+      body: JSON.stringify({ query }),
+    })
+    if (!res.ok) return { image: null, title: null }
+    const data = (await res.json())?.data
+    if (!data) return { image: null, title: null }
+
+    if (target.kind === 'video') {
+      return { image: data.video?.previewThumbnailURL ?? null, title: data.video?.title ?? null }
+    }
+    if (target.kind === 'clip') {
+      return { image: data.clip?.thumbnailURL ?? null, title: data.clip?.title ?? null }
+    }
+    const u = data.user
+    return {
+      image: u?.stream?.previewImageURL ?? u?.profileImageURL ?? null,
+      title: u?.broadcastSettings?.title ?? u?.displayName ?? null,
+    }
+  }
+  catch {
+    return { image: null, title: null }
+  }
+}