163 lines
4.1 KiB
JavaScript
163 lines
4.1 KiB
JavaScript
// @flow
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import fs from "fs";
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import path from "path";
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import util from "util";
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import Koa from "koa";
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import Router from "koa-router";
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import sendfile from "koa-sendfile";
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import serve from "koa-static";
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import isUUID from "validator/lib/isUUID";
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import { languages } from "../../shared/i18n";
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import env from "../env";
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import apexRedirect from "../middlewares/apexRedirect";
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import Share from "../models/Share";
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import presentEnv from "../presenters/env";
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import { opensearchResponse } from "../utils/opensearch";
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import prefetchTags from "../utils/prefetchTags";
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import { robotsResponse } from "../utils/robots";
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const isProduction = process.env.NODE_ENV === "production";
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const isTest = process.env.NODE_ENV === "test";
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const koa = new Koa();
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const router = new Router();
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const readFile = util.promisify(fs.readFile);
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const readIndexFile = async (ctx) => {
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if (isProduction) {
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return readFile(path.join(__dirname, "../../app/index.html"));
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}
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if (isTest) {
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return readFile(path.join(__dirname, "../static/index.html"));
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}
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const middleware = ctx.devMiddleware;
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await new Promise((resolve) => middleware.waitUntilValid(resolve));
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return new Promise((resolve, reject) => {
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middleware.fileSystem.readFile(
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`${ctx.webpackConfig.output.path}/index.html`,
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(err, result) => {
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if (err) {
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return reject(err);
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}
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resolve(result);
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}
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);
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});
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};
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const renderApp = async (ctx, next, title = "Outline") => {
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if (ctx.request.path === "/realtime/") {
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return next();
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}
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const page = await readIndexFile(ctx);
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const environment = `
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window.env = ${JSON.stringify(presentEnv(env))};
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`;
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ctx.body = page
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.toString()
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.replace(/\/\/inject-env\/\//g, environment)
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.replace(/\/\/inject-title\/\//g, title)
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.replace(/\/\/inject-prefetch\/\//g, prefetchTags)
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.replace(/\/\/inject-slack-app-id\/\//g, process.env.SLACK_APP_ID || "");
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};
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const renderShare = async (ctx, next) => {
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const { shareId } = ctx.params;
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// Find the share record if publicly published so that the document title
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// can be be returned in the server-rendered HTML. This allows it to appear in
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// unfurls with more reliablity
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let share;
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if (isUUID(shareId)) {
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share = await Share.findOne({
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where: {
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id: shareId,
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published: true,
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},
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});
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}
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// Allow shares to be embedded in iframes on other websites
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ctx.remove("X-Frame-Options");
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return renderApp(ctx, next, share?.document?.title);
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};
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// serve static assets
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koa.use(
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serve(path.resolve(__dirname, "../../../public"), {
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maxage: 60 * 60 * 24 * 30 * 1000,
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})
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);
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if (process.env.NODE_ENV === "production") {
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router.get("/static/*", async (ctx) => {
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ctx.set({
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"Service-Worker-Allowed": "/",
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"Access-Control-Allow-Origin": "*",
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"Cache-Control": `max-age=${356 * 24 * 60 * 60}`,
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});
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await sendfile(
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ctx,
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path.join(__dirname, "../../app/", ctx.path.substring(8))
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);
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});
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}
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router.get("/locales/:lng.json", async (ctx) => {
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let { lng } = ctx.params;
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if (!languages.includes(lng)) {
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ctx.status = 404;
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return;
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}
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if (process.env.NODE_ENV === "production") {
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ctx.set({
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"Cache-Control": `max-age=${7 * 24 * 60 * 60}`,
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});
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}
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await sendfile(
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ctx,
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path.join(__dirname, "../../shared/i18n/locales", lng, "translation.json")
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);
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});
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router.get("/robots.txt", (ctx) => {
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ctx.body = robotsResponse(ctx);
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});
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router.get("/opensearch.xml", (ctx) => {
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ctx.type = "text/xml";
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ctx.body = opensearchResponse();
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});
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router.get("/share/:shareId", renderShare);
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router.get("/share/:shareId/*", renderShare);
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// catch all for application
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router.get("*", renderApp);
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// In order to report all possible performance metrics to Sentry this header
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// must be provided when serving the application, see:
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// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Timing-Allow-Origin
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const timingOrigins = [env.URL];
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if (env.SENTRY_DSN) {
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timingOrigins.push("https://sentry.io");
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}
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koa.use(async (ctx, next) => {
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ctx.set("Timing-Allow-Origin", timingOrigins.join(", "));
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await next();
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});
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koa.use(apexRedirect());
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koa.use(router.routes());
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export default koa;
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