mirror of
https://iceshrimp.dev/iceshrimp/iceshrimp
synced 2024-12-23 11:08:13 +09:00
66 lines
1.5 KiB
TypeScript
66 lines
1.5 KiB
TypeScript
import * as Koa from 'koa';
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import summaly from 'summaly';
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import { fetchMeta } from '@/misc/fetch-meta';
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import Logger from '@/services/logger';
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import config from '@/config/index';
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import { query } from '@/prelude/url';
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import { getJson } from '@/misc/fetch';
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const logger = new Logger('url-preview');
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module.exports = async (ctx: Koa.Context) => {
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const url = ctx.query.url;
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if (typeof url !== 'string') {
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ctx.status = 400;
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return;
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}
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const lang = ctx.query.lang;
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if (Array.isArray(lang)) {
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ctx.status = 400;
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return;
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}
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const meta = await fetchMeta();
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logger.info(meta.summalyProxy
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? `(Proxy) Getting preview of ${url}@${lang} ...`
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: `Getting preview of ${url}@${lang} ...`);
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try {
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const summary = meta.summalyProxy ? await getJson(`${meta.summalyProxy}?${query({
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url: url,
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lang: lang ?? 'ja-JP',
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})}`) : await summaly(url, {
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followRedirects: false,
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lang: lang ?? 'ja-JP',
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});
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logger.succ(`Got preview of ${url}: ${summary.title}`);
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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 (err) {
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logger.warn(`Failed to get preview of ${url}: ${err}`);
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ctx.status = 200;
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ctx.set('Cache-Control', 'max-age=86400, immutable');
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ctx.body = '{}';
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}
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};
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function wrap(url?: string): string | null {
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return url != null
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? url.match(/^https?:\/\//)
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? `${config.url}/proxy/preview.jpg?${query({
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url,
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preview: '1',
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})}`
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: url
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: null;
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}
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