Nest shot scripts under Queue jobs, keep the studio from overflowing on phones, and lighten library thumbs and polling so the UI stays responsive.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/api/library/stills/[id].get.ts

@@ -1,16 +1,23 @@
-import { existsSync, readFileSync } from 'node:fs'
+import { existsSync, createReadStream } from 'node:fs'
+import { fileEtag, stillPath, stillThumbPath, sniffImageType } from '~/server/utils/library'
 
-export default defineEventHandler((event) => {
+export default defineEventHandler(async (event) => {
   const { owner } = assertLibraryOwner(event)
   const id = String(getRouterParam(event, 'id') || '')
   const still = getStill(owner, id)
   assertFolderAccess(event, still.folderId)
-  const path = stillPath(owner, still.id)
-  if (!existsSync(path)) {
+  const wantThumb = String(getQuery(event).thumb || '') === '1'
+  const path = wantThumb ? await stillThumbPath(owner, id) : stillPath(owner, still.id)
+  if (!path || !existsSync(path)) {
     throw createError({ statusCode: 404, statusMessage: 'Image file is missing' })
   }
-  const buf = readFileSync(path)
-  setHeader(event, 'Content-Type', imageContentType(buf))
-  setHeader(event, 'Cache-Control', 'private, max-age=3600')
-  return buf
+  const etag = fileEtag(path)
+  setHeader(event, 'ETag', etag)
+  setHeader(event, 'Cache-Control', wantThumb ? 'private, max-age=86400, stale-while-revalidate=604800' : 'private, max-age=3600')
+  if (getHeader(event, 'if-none-match') === etag) {
+    setResponseStatus(event, 304)
+    return null
+  }
+  setHeader(event, 'Content-Type', wantThumb ? 'image/jpeg' : sniffImageType(path))
+  return sendStream(event, createReadStream(path))
 })