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app.js
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app.js
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"use strict";
const express = require('express');
const path = require('path');
const fileUpload = require('express-fileupload');
const DnaAnalyzer = require('./file_processing/bio').DnaAnalyzer;
const app = express();
app.use(express.static('src'));
app.use(fileUpload());
app.set('views', __dirname + '/views');
app.set('view engine', 'ejs');
app.get('/', (req, res) => {
res.sendFile(__dirname + '/views/index.html');
});
/****************************
******** Routing ************
****************************/
app.post('/', (req, res) => {
let sampleFile;
if (!req.files) { // user chooses to paste sequence
let pastedFASTA = req.body.pastedFASTA;
const uploadedDNA = new DnaAnalyzer();
uploadedDNA.parseFASTA(pastedFASTA, () => {
uploadedDNA.analyzeFASTA(uploadedDNA.sequence);
app.locals.dnaInfo = uploadedDNA;
});
res.redirect('/results');
return;
}
sampleFile = req.files.uploadedFASTA; // name attribute in form from ./dev/js/components/Upload.js
sampleFile.mv(path.join(__dirname + '/uploadedFiles/' + sampleFile.name), function(err) {
if (err) {
res.status(500).send(err);
} else {
const uploadedDNA = new DnaAnalyzer();
uploadedDNA.readFASTA('../uploadedFiles/', sampleFile.name, () => {
app.locals.dnaInfo = uploadedDNA;
console.log(app.locals)
});
res.redirect('/results');
}
});
});
app.get('/results', (req, res) => {
res.render('results', { analyzedFASTA: app.locals.dnaInfo });
});
app.listen(process.env.PORT || 3000);