hypercross
dd08f901ae
Add a /pdf proxy route that forces Content-Disposition inline so PDFs render instead of downloading, and a web viewer that embeds the document in an iframe with a standalone open-in-new-tab link.
56 lines
1.7 KiB
TypeScript
56 lines
1.7 KiB
TypeScript
import { Hono } from 'hono';
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import { GAMES_ROOT } from '../config.js';
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import { resolveAsset } from './resolveAsset.js';
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const app = new Hono();
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/**
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* Fetch a PDF and stream it back inline so the browser renders it instead of
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* downloading. PDF hosts often send `Content-Disposition: attachment`, which
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* forces a download even when the URL is opened in a tab or iframe. This route
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* strips that header and forces `inline` so the PDF can be embedded in the web
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* app's viewer. Like `/asset`, a relative URL (no scheme) is treated as a game
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* asset path relative to `GAMES_ROOT`.
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*/
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app.get('/', async (c) => {
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const raw = c.req.query('url');
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if (!raw) {
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return c.json({ error: 'Missing url query param' }, 400);
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}
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const result = await resolveAsset(raw, GAMES_ROOT);
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if (!result.ok) {
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return c.json(
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{ error: result.reason === 'not-found' ? 'Asset not found' : 'Invalid url query param' },
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result.reason === 'not-found' ? 404 : 400,
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);
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}
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const asset = result.asset;
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// A local game asset is streamed from disk; a remote one is fetched.
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let body: BodyInit;
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if (asset.stream) {
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body = asset.stream as unknown as BodyInit;
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} else {
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let res: Response;
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try {
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res = await fetch(asset.url!);
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} catch (err) {
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return c.json({ error: `Failed to fetch pdf: ${String(err)}` }, 502);
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}
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if (!res.ok) {
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return c.json({ error: `Pdf responded ${res.status}` }, 502);
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}
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body = res.body!;
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}
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return new Response(body, {
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headers: {
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'Content-Type': 'application/pdf',
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'Content-Disposition': 'inline',
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'Cache-Control': 'public, max-age=86400',
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},
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});
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});
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export default app; |