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import * as Koa from 'koa';
import * as request from 'request-promise-native';
import summaly from 'summaly';
import config from '../../config';
module.exports = async (ctx: Koa.Context) => {
try {
const summary = config.summalyProxy ? await request.get({
url: config.summalyProxy,
qs: {
url: ctx.query.url
},
json: true
}) : await summaly(ctx.query.url, {
followRedirects: false
});
summary.icon = wrap(summary.icon);
summary.thumbnail = wrap(summary.thumbnail);
// Cache 7days
ctx.set('Cache-Control', 'max-age=604800, immutable');
ctx.body = summary;
} catch (e) {
ctx.status = 200;
ctx.set('Cache-Control', 'max-age=86400, immutable');
ctx.body = '{}';
}
};
function wrap(url: string): string {
return url != null
? url.startsWith('https://') || url.startsWith('data:')
? url
: `https://images.weserv.nl/?url=${encodeURIComponent(url.replace(/^http:\/\//, ''))}`
: null;
}
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