Sharkey/src/server/web/url-preview.ts

56 lines
1.4 KiB
TypeScript
Raw Normal View History

2018-04-12 23:06:18 +02:00
import * as Koa from 'koa';
2018-08-25 18:56:21 +02:00
import * as request from 'request-promise-native';
2016-12-28 23:49:51 +01:00
import summaly from 'summaly';
2019-04-24 01:11:19 +02:00
import { fetchMeta } from '../../misc/fetch-meta';
import Logger from '../../services/logger';
import config from '../../config';
import { query } from '../../prelude/url';
2019-02-28 04:00:57 +01:00
const logger = new Logger('url-preview');
2016-12-28 23:49:51 +01:00
2019-01-22 13:42:05 +01:00
module.exports = async (ctx: Koa.BaseContext) => {
2018-11-23 00:13:17 +01:00
const meta = await fetchMeta();
2019-03-01 06:40:29 +01:00
logger.info(meta.summalyProxy
? `(Proxy) Getting preview of ${ctx.query.url} ...`
: `Getting preview of ${ctx.query.url} ...`);
2019-02-28 04:00:57 +01:00
2018-05-18 05:08:05 +02:00
try {
2018-11-23 00:13:17 +01:00
const summary = meta.summalyProxy ? await request.get({
url: meta.summalyProxy,
2018-08-25 18:56:21 +02:00
qs: {
url: ctx.query.url
},
json: true
}) : await summaly(ctx.query.url, {
2018-05-18 05:21:53 +02:00
followRedirects: false
});
2018-08-25 18:56:21 +02:00
2019-02-28 04:00:57 +01:00
logger.succ(`Got preview of ${ctx.query.url}: ${summary.title}`);
2018-05-18 05:08:05 +02:00
summary.icon = wrap(summary.icon);
summary.thumbnail = wrap(summary.thumbnail);
2018-04-13 18:45:44 +02:00
2018-05-18 05:08:05 +02:00
// Cache 7days
ctx.set('Cache-Control', 'max-age=604800, immutable');
2018-04-13 18:45:44 +02:00
2018-05-18 05:08:05 +02:00
ctx.body = summary;
} catch (e) {
2019-06-13 15:35:37 +02:00
logger.warn(`Failed to get preview of ${ctx.query.url}: ${e}`);
ctx.status = 200;
ctx.set('Cache-Control', 'max-age=86400, immutable');
ctx.body = '{}';
2018-05-18 05:08:05 +02:00
}
2016-12-28 23:49:51 +01:00
};
function wrap(url?: string): string | null {
2017-01-14 02:51:48 +01:00
return url != null
2019-02-10 11:19:26 +01:00
? url.match(/^https?:\/\//)
? `${config.url}/proxy/preview.jpg?${query({
url,
preview: '1'
})}`
2019-02-10 11:19:26 +01:00
: url
2017-01-14 02:51:48 +01:00
: null;
2016-12-28 23:49:51 +01:00
}