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server.js
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server.js
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require('dotenv').config();
const express = require('express');
const cors = require('cors');
const app = express();
const fs = require('fs');
const marked = require('marked');
const { html, renderToStream } = require('@popeindustries/lit-html-server');
const render = require('./render');
const corsOptions = {
origin: '*',
methods: 'GET,HEAD,PUT,PATCH,POST,DELETE',
preflightContinue: false,
optionsSuccessStatus: 204,
};
app.use(cors(corsOptions));
app.use(express.static('public'));
app.get('/:user/:project', (req, res, next) => {
const cellsNames = req.query.cells ? req.query.cells.split(',') : null;
const fullWidth = req.query.fullwidth
? !!parseInt(req.query.fullwidth)
: false;
const { user, project } = req.params;
const cellsHtml = cellsNames
? cellsNames.map(
(name) =>
html` <div class="observablehq-${name.replace(/\s/g, '-')}"></div> `
)
: '';
const out = render(html, user, project, cellsNames, fullWidth);
try {
res.setHeader('content-type', 'text/html; charset=utf-8');
renderToStream(out).pipe(res);
} catch (err) {
console.warn('ERROR', err);
next(err);
return;
}
});
// README to HTML
const showReadme = (res) => {
fs.readFile('./README.md', 'utf8', (err, text) => {
if (err) {
res.writeHead(500);
return res.end();
}
res.writeHead(200, { 'Content-Type': 'text/html; charset=utf-8' });
res.write(`
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/kognise/water.css@latest/dist/light.min.css">
${marked(text)}`);
res.end();
});
};
app.get('/', (req, res) => {
showReadme(res);
});
// listen for requests :)
const listener = app.listen(process.env.PORT, () => {
console.log('Your app is listening on port ' + listener.address().port);
});