mirror of
https://github.com/LemmyNet/lemmy-ui.git
synced 2024-12-11 21:41:28 +00:00
166 lines
4.7 KiB
TypeScript
166 lines
4.7 KiB
TypeScript
import serialize from 'serialize-javascript';
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import express from 'express';
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import { StaticRouter } from 'inferno-router';
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import { renderToString } from 'inferno-server';
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import { matchPath } from 'inferno-router';
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import path from 'path';
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import { App } from '../shared/components/app';
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import { InitialFetchRequest, IsoData } from '../shared/interfaces';
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import { routes } from '../shared/routes';
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import IsomorphicCookie from 'isomorphic-cookie';
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import { setAuth } from '../shared/utils';
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import { GetSiteForm, LemmyHttp } from 'lemmy-js-client';
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import process from 'process';
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import { Helmet } from 'inferno-helmet';
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import { initializeSite } from '../shared/initialize';
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import { httpUri } from '../shared/env';
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import { IncomingHttpHeaders } from 'http';
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const server = express();
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const port = 1234;
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server.use(express.json());
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server.use(express.urlencoded({ extended: false }));
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server.use('/static', express.static(path.resolve('./dist')));
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// server.use(cookieParser());
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server.get('/*', async (req, res) => {
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const activeRoute = routes.find(route => matchPath(req.path, route)) || {};
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const context = {} as any;
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let auth: string = IsomorphicCookie.load('jwt', req);
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let getSiteForm: GetSiteForm = {};
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setAuth(getSiteForm, auth);
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let promises: Promise<any>[] = [];
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let headers = setForwardedHeaders(req.headers);
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let initialFetchReq: InitialFetchRequest = {
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client: new LemmyHttp(httpUri, headers),
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auth,
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path: req.path,
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};
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// Get site data first
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let site = await initialFetchReq.client.getSite(getSiteForm);
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initializeSite(site);
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if (activeRoute.fetchInitialData) {
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promises.push(...activeRoute.fetchInitialData(initialFetchReq));
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}
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let routeData = await Promise.all(promises);
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// Redirect to the 404 if there's an API error
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if (routeData[0] && routeData[0].error) {
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let errCode = routeData[0].error;
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return res.redirect(`/404?err=${errCode}`);
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}
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let acceptLang = req.headers['accept-language']
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? req.headers['accept-language'].split(',')[0]
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: 'en';
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let lang = !!site.my_user
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? site.my_user.lang == 'browser'
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? acceptLang
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: 'en'
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: acceptLang;
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let isoData: IsoData = {
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path: req.path,
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site,
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routeData,
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lang,
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};
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const wrapper = (
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<StaticRouter location={req.url} context={isoData}>
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<App site={isoData.site} />
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</StaticRouter>
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);
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if (context.url) {
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return res.redirect(context.url);
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}
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const cspHtml = (
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<meta
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http-equiv="Content-Security-Policy"
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content="default-src 'none'; connect-src 'self'; frame-src *; img-src *; script-src 'self'; style-src 'self'"
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/>
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);
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const root = renderToString(wrapper);
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const cspStr = process.env.LEMMY_EXTERNAL_HOST ? renderToString(cspHtml) : '';
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const helmet = Helmet.renderStatic();
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res.send(`
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<!DOCTYPE html>
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<html ${helmet.htmlAttributes.toString()} lang="en">
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<head>
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<script>window.isoData = ${serialize(isoData)}</script>
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${helmet.title.toString()}
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${helmet.meta.toString()}
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<!-- Required meta tags -->
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<meta name="Description" content="Lemmy">
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
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<!-- Content Security Policy -->
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${cspStr}
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<!-- Web app manifest -->
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<link rel="manifest" href="/static/assets/manifest.webmanifest">
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<!-- Icons -->
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<link rel="shortcut icon" type="image/svg+xml" href="/static/assets/icons/favicon.svg" />
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<link rel="apple-touch-icon" href="/static/assets/icons/apple-touch-icon.png" />
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<!-- Styles -->
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<link rel="stylesheet" type="text/css" href="/static/styles/styles.css" />
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<!-- Current theme and more -->
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${helmet.link.toString()}
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</head>
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<body ${helmet.bodyAttributes.toString()}>
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<noscript>
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<div class="alert alert-danger rounded-0" role="alert">
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<b>Javascript is disabled. Actions will not work.</b>
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</div>
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</noscript>
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<div id='root'>${root}</div>
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<script defer src='/static/js/client.js'></script>
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</body>
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</html>
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`);
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});
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server.listen(port, () => {
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console.log(`http://localhost:${port}`);
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});
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function setForwardedHeaders(
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headers: IncomingHttpHeaders
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): { [key: string]: string } {
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let out = {
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host: headers.host,
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};
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if (headers['x-real-ip']) {
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out['x-real-ip'] = headers['x-real-ip'];
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}
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if (headers['x-forwarded-for']) {
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out['x-forwarded-for'] = headers['x-forwarded-for'];
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}
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return out;
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}
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process.on('SIGINT', () => {
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console.info('Interrupted');
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process.exit(0);
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});
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