45 lines
1.3 KiB
TypeScript
45 lines
1.3 KiB
TypeScript
import type { APIRoute } from 'astro';
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import etag from 'etag';
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import { lookup } from 'mrmime';
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// @ts-ignore
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import loader from 'virtual:image-loader';
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import { isRemoteImage, loadLocalImage, loadRemoteImage } from '../utils/images.js';
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export const get: APIRoute = async ({ request }) => {
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try {
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const url = new URL(request.url);
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const transform = loader.parseTransform(url.searchParams);
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if (!transform) {
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return new Response('Bad Request', { status: 400 });
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}
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let inputBuffer: Buffer | undefined = undefined;
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if (isRemoteImage(transform.src)) {
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inputBuffer = await loadRemoteImage(transform.src);
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} else {
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const clientRoot = new URL('../client/', import.meta.url);
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const localPath = new URL('.' + transform.src, clientRoot);
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inputBuffer = await loadLocalImage(localPath.pathname);
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}
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if (!inputBuffer) {
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return new Response(`"${transform.src} not found`, { status: 404 });
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}
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const { data, format } = await loader.transform(inputBuffer, transform);
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return new Response(data, {
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status: 200,
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headers: {
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'Content-Type': lookup(format) || '',
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'Cache-Control': 'public, max-age=31536000',
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ETag: etag(inputBuffer),
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Date: new Date().toUTCString(),
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},
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});
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} catch (err: unknown) {
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return new Response(`Server Error: ${err}`, { status: 500 });
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}
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};
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