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multipleof4andClaude Opus 5.5 223150650c Feat: Cache search results for an hour so other ?i= are free and fast
A search's result URLs are kept in SurrealDB (results table) for 1 hour,
fetched in the same transaction as the rate limit. Other ?i= of the query
then skip the Brave/Bing search and don't count toward the daily limit.
The record also tracks which results worked (pos) and how far it got
(next), so an already-known ?i= downloads only its own image and a new one
carries on from where the last left off. free.* searches Openverse and
Wikimedia together so its whole list can be cached. Empty results aren't
cached, since they can mean Brave and Bing failed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-12 14:07:51 +00:00

21 lines
1.0 KiB
JavaScript

import { openverseImageSearch } from "./openverse.js";
import { wikimediaImageSearch } from "./wikimedia.js";
// Wikimedia's User-Agent policy requires contact info; also used when downloading free images
export const FREE_UA = "direct-img.link/1.0 (https://direct-img.link; contact@direct-img.link)";
// Tried in this order when no ?src= is given
const SOURCES = { openverse: openverseImageSearch, wikimedia: wikimediaImageSearch };
// ?src=openverse|wikimedia, or "auto" (every source in order) when omitted. Returns null if invalid.
export function parseFreeSource(searchParams) {
const src = searchParams.get("src")?.toLowerCase() || "auto";
return src === "auto" || Object.hasOwn(SOURCES, src) ? src : null;
}
// Every source's image URLs, one source after another. All are searched at once, since the whole list gets cached.
export async function freeImageUrls(query, src, env) {
const names = src === "auto" ? Object.keys(SOURCES) : [src];
return (await Promise.all(names.map(n => SOURCES[n](query, env, FREE_UA)))).flatMap(urls => urls || []);
}