paricafe/src/server/web/url-preview.ts
2018-04-14 01:45:44 +09:00

19 lines
475 B
TypeScript

import * as Koa from 'koa';
import summaly from 'summaly';
module.exports = async (ctx: Koa.Context) => {
const summary = await summaly(ctx.query.url);
summary.icon = wrap(summary.icon);
summary.thumbnail = wrap(summary.thumbnail);
// Cache 7days
ctx.set('Cache-Control', 'max-age=604800, immutable');
ctx.body = summary;
};
function wrap(url: string): string {
return url != null
? `https://images.weserv.nl/?url=${url.replace(/^https?:\/\//, '')}`
: null;
}