55 lines
2.0 KiB
JavaScript
55 lines
2.0 KiB
JavaScript
import summaly from "@iceshrimp/summaly";
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import { fetchMeta } from "../../misc/fetch-meta.js";
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import Logger from "../../services/logger.js";
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import config from "../../config/index.js";
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import { query } from "../../prelude/url.js";
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import { getJson } from "../../misc/fetch.js";
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const logger = new Logger("url-preview");
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export const urlPreviewHandler = async (ctx)=>{
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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 ? `(Proxy) Getting preview of ${url}@${lang} ...` : `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 ?? "en-US"
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})}`) : await summaly.default(url, {
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followRedirects: false,
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lang: lang ?? "en-US",
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userAgent: config.userAgent
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});
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logger.succ(`Got preview of ${url}: ${summary.title}`);
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if (summary.url && !(summary.url.startsWith("http://") || summary.url.startsWith("https://"))) {
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throw new Error("unsupported schema included");
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}
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if (summary.player?.url && !(summary.player.url.startsWith("http://") || summary.player.url.startsWith("https://"))) {
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throw new Error("unsupported schema included");
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}
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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}: ${err}`);
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ctx.status = 200;
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ctx.set("Cache-Control", "max-age=86400, immutable");
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ctx.body = "{}";
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}
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};
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function wrap(url) {
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return url != null ? `${config.url}/proxy/preview.webp?${query({
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url,
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preview: "1"
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})}` : null;
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}
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