118 lines
2.8 KiB
JavaScript
118 lines
2.8 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 { languages } from "../shared/i18n";
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import environment from "./env";
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import { NotFoundError } from "./errors";
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import apexRedirect from "./middlewares/apexRedirect";
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import { opensearchResponse } from "./utils/opensearch";
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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 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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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) => {
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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 env = `
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window.env = ${JSON.stringify(environment)};
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`;
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ctx.body = page
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.toString()
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.replace(/\/\/inject-env\/\//g, env)
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.replace(/\/\/inject-sentry-dsn\/\//g, process.env.SENTRY_DSN || "")
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.replace(/\/\/inject-slack-app-id\/\//g, process.env.SLACK_APP_ID || "");
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};
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// serve static assets
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koa.use(
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serve(path.resolve(__dirname, "../../public"), {
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maxage: 60 * 60 * 24 * 30 * 1000,
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})
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);
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router.get("/_health", (ctx) => (ctx.body = "OK"));
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if (process.env.NODE_ENV === "production") {
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router.get("/static/*", async (ctx) => {
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ctx.set({
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"Cache-Control": `max-age=${356 * 24 * 60 * 60}`,
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});
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await sendfile(ctx, path.join(__dirname, "../app/", ctx.path.substring(8)));
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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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throw new NotFoundError();
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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/*", (ctx, next) => {
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ctx.remove("X-Frame-Options");
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return renderApp(ctx, next);
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});
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// catch all for application
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router.get("*", renderApp);
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// middleware
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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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