pixel-editor/server.js

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const path = require('path');
const express = require('express');
const reload = require('reload');
const app = express();
const BUILDDIR = process.argv[2] || './build';
const PORT = process.argv[3] || 3000;
const FULLBUILDPATH = path.join(__dirname, BUILDDIR)
//LOGGING
app.use((req, res, next)=> {
//console.log('REQUEST', req.method+' '+req.originalUrl, res.statusCode);
next();
});
//apply to every request
app.use((req, res, next) => {
//disable caching
res.set("Cache-Control", "no-store");
//enabled/disable reload module
if (process.env.RELOAD === "yes") res.locals.reload = true;
return next();
});
//ROUTE - other files
app.use('/', express.static(FULLBUILDPATH, {
//custom function required for logging static files
setHeaders: (res, filePath, fileStats) => {
console.info('GET', '/'+path.relative(FULLBUILDPATH, filePath), res.statusCode);
}
}));
//ROUTE - match / or any route with just numbers letters and dashes, and return index.htm (all other routes should have been handled already)
app.get('/', (req, res, next) => {
console.log('root')
res.sendFile(path.join(__dirname, BUILDDIR, 'index.htm'), {}, function (err) {
console.log('sent file');
return next();
});
});
//HOT RELOADING
// "reload" module allows us to trigger webpage reload automatically on file changes, but inside pixel editor it also
// makes browser steal focus from any other window in order to ask user about unsaved changes. It might be quite
// intrusive so we decided to give option to choose preferred workflow.
if (process.env.RELOAD === "yes") {
reload(app).then(() => {
//start server
app.server = app.listen(PORT, () => {
console.log(`Web server listening on port ${PORT} (with reload module)`);
})
});
} else {
app.listen(PORT, () => {
console.log(`Web server listening on port ${PORT}`);
})
}
app.use(function(req, res, next) {
res.status(404);
res.type('txt').send('The requested resource does not exist. Did you spell it right? Did you remember to build the app? It\'s probably your fault somehow.');
return next();
});
//LOGGING
app.use((req, res, next)=> {
console.log(req.method+' '+req.originalUrl, res.statusCode);
});