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import * as ReactDOMServer from 'react-dom/server'
import cookie from 'cookie'
import config from 'config'
// import our main App component
import App from '../../src/App'
import { getLinks } from '../sape'
import { StaticRouter } from 'react-router-dom/server'
import { VisitorProvider } from '../../src/ui/VisitorContext'
import path from 'path'
import fs from 'fs'
const STATIC_ROOT = config.get('service.static_root') || path.resolve(__dirname, 'public')
const serverRenderer = async (req, res) => {
// point to the html file created by CRA's build tool
const filePath = path.resolve(STATIC_ROOT, 'index.html')
// links
const cookies = cookie.parse(req.headers.cookie || '')
const links = await getLinks(req.originalUrl, cookies['sape_cookie'])
fs.readFile(filePath, 'utf8', (err, htmlData) => {
if (err) {
console.error('err', err)
return res.status(404).end()
}
const routerContext = {}
const props = {
footer: links.join(' ')
}
const marker = '<div id="app">'
const data = htmlData.split(marker)
const propsData = `<script>window.__PROPS__="${btoa(unescape(encodeURIComponent(JSON.stringify(props))))}";</script>${marker}`
let didError = false
const { pipe } = ReactDOMServer.renderToPipeableStream(
<VisitorProvider>
<StaticRouter location={req.baseUrl} context={routerContext}>
<App {...props} />
</StaticRouter>
</VisitorProvider>
, {
onShellReady() {
res.statusCode = didError ? 500 : 200
res.setHeader('Content-type', 'text/html')
res.write(data[0])
res.write(propsData)
pipe(res, { end: false })
},
onShellError() {
didError = true
res.statusCode = 500
res.setHeader('Content-type', 'text/html')
res.send(
'<h1>Something went wrong :(</h1>'
)
res.end()
},
onAllReady() {
if (!didError) {
res.write(data[1])
}
res.end()
},
onError(err) {
didError = true
console.log(err)
}
})
})
}
export default serverRenderer
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