Converts uploaded .doc(x) to .pdf

app.js

var express = require('express');
var exec = require('child_process').exec;
var app = express.createServer();
var fs = require('fs');
var path = require('path');

var jobs = [];


app.use(express.bodyParser());
app.use(express.static(__dirname + '/public'));

var convertToPdf = function(file, outDir, callback) {
  var command = 'lowriter --convert-to pdf ' + file + ' -outdir ' + outDir;
  exec(command, callback);
}

convertToEpub = function () {
}
convertToMobi = function () {
}

app.get('/check_progress', function(req, res) {
  if(req.query.job_timestamp)
    if(jobs[req.query.job_timestamp] != undefined)
      res.send(jobs[req.query.job_timestamp])
    else
      res.send('')
  else
    res.send(req.params);
//  res.send(data[req.params.job_timestamp]);

})

app.get('/settings/:setting/:value', function(req, res) {
  data[req.params.setting] = req.params.value;
  res.send(data[req.params.setting]);
})

app.post('/file-upload', function(req, res) {
  var date = Date.now();
  var outDir = path.join(__dirname, 'public', 'uploads', date.toString());

  if(req.xhr) {
    var fileName = req.header('x-file-name');
    fileName = fileName.replace(/%20/g, '_')
    console.log('file_name', fileName);
    fs.mkdir(outDir, function(e) {
      var ws = fs.createWriteStream(path.join(outDir, fileName));

      req.on('data', function(data) {
        ws.write(data);
      });
      req.on('end', function() {
        jobs[date] = 'in progress';
        res.json({success: true, timestamp: date});
        convertToPdf(path.join(outDir, fileName), outDir, function(fileName) {
          jobs[date] = 'complete';
        });


      });
    });
  }
//  res.send(req.files);
});



app.listen(3000);