colouring-montreal/app/src/frontendRoute.tsx

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2019-09-06 14:13:45 -04:00
import express from 'express';
import React from 'react';
import { StaticRouter } from 'react-router-dom';
import { renderToString } from 'react-dom/server';
import serialize from 'serialize-javascript';
import App from './frontend/app';
import { parseBuildingURL } from './parse';
import { getUserById } from './api/services/user';
import {
getBuildingById,
getBuildingLikeById,
getBuildingUPRNsById
} from './api/services/building';
// reference packed assets
const assets = require(process.env.RAZZLE_ASSETS_MANIFEST);
function frontendRoute(req: express.Request, res: express.Response) {
const context: any = {}; // TODO: remove any
const data: any = {}; // TODO: remove any
context.status = 200;
const userId = req.session.user_id;
const buildingId = parseBuildingURL(req.url);
const isBuilding = (typeof (buildingId) !== 'undefined');
if (isBuilding && isNaN(buildingId)) {
context.status = 404;
}
Promise.all([
userId ? getUserById(userId) : undefined,
isBuilding ? getBuildingById(buildingId) : undefined,
isBuilding ? getBuildingUPRNsById(buildingId) : undefined,
(isBuilding && userId) ? getBuildingLikeById(buildingId, userId) : false
]).then(function ([user, building, uprns, buildingLike]) {
if (isBuilding && typeof (building) === 'undefined') {
context.status = 404;
}
data.user = user;
data.building = building;
data.building_like = buildingLike;
if (data.building != null) {
data.building.uprns = uprns;
}
renderHTML(context, data, req, res);
}).catch(error => {
console.error(error);
data.user = undefined;
data.building = undefined;
data.building_like = undefined;
context.status = 500;
renderHTML(context, data, req, res);
});
}
function renderHTML(context, data, req, res) {
const markup = renderToString(
<StaticRouter context={context} location={req.url}>
<App user={data.user} building={data.building} building_like={data.building_like} />
</StaticRouter>
);
if (context.url) {
res.redirect(context.url);
} else {
res.status(context.status).send(
`<!doctype html>
<html lang="">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta charset="utf-8" />
<title>Colouring London</title>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<style>
@font-face {
font-family: 'glacial_cl';
src: url('/fonts/glacialindifference-regular-webfont.woff2') format('woff2'),
url('/fonts/glacialindifference-regular-webfont.woff') format('woff');
font-weight: normal;
font-style: normal;
}
</style>
${
assets.client.css
? `<link rel="stylesheet" href="${assets.client.css}">`
: ''
}
${
process.env.NODE_ENV === 'production'
? `<script src="${assets.client.js}" defer></script>`
: `<script src="${assets.client.js}" defer crossorigin></script>`
}
</head>
<body>
<div id="root">${markup}</div>
<script>
window.__PRELOADED_STATE__ = ${serialize(data)}
</script>
</body>
</html>`
);
}
}
export default frontendRoute;