26 lines
612 B
TypeScript
26 lines
612 B
TypeScript
import * as Koa from 'koa';
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import summaly from 'summaly';
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module.exports = async (ctx: Koa.Context) => {
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try {
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const summary = await summaly(ctx.query.url);
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summary.icon = wrap(summary.icon);
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summary.thumbnail = wrap(summary.thumbnail);
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// Cache 7days
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ctx.set('Cache-Control', 'max-age=604800, immutable');
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ctx.body = summary;
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} catch (e) {
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ctx.status = 500;
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}
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};
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function wrap(url: string): string {
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return url != null
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? url.startsWith('https://') || url.startsWith('data:')
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? url
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: `https://images.weserv.nl/?url=${encodeURIComponent(url.replace(/^http:\/\//, ''))}`
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: null;
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}
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