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import type { APIRoute } from 'astro';
import etag from 'etag';
import { lookup } from 'mrmime';
// @ts-ignore
import loader from 'virtual:image-loader';
import { isRemoteImage, loadRemoteImage } from '../utils.js';
export const get: APIRoute = async ({ request }) => {
try {
const url = new URL(request.url);
const transform = loader.parseTransform(url.searchParams);
if (!transform) {
return new Response('Bad Request', { status: 400 });
}
// TODO: Can we lean on fs to load local images in SSR prod builds?
const href = isRemoteImage(transform.src)
? new URL(transform.src)
: new URL(transform.src, url.origin);
const inputBuffer = await loadRemoteImage(href.toString());
if (!inputBuffer) {
return new Response(`"${transform.src} not found`, { status: 404 });
}
const { data, format } = await loader.transform(inputBuffer, transform);
return new Response(data, {
status: 200,
headers: {
'Content-Type': lookup(format) || '',
'Cache-Control': 'public, max-age=31536000',
ETag: etag(inputBuffer),
Date: new Date().toUTCString(),
},
});
} catch (err: unknown) {
return new Response(`Server Error: ${err}`, { status: 500 });
}
};
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