app.js

var express = require('express');
var app = express();
var path = require('path');
var formidable = require('formidable');
var fs = require('fs');
var bodyParser = require("body-parser");
var PythonShell = require('python-shell');
var io = require('socket.io');
var open = require("open");

var rgbColor = ['255, 0, 0', '51, 204, 51', '0, 153, 255', '255, 255, 0', '204, 0, 153', '51, 51, 0', '255, 0, 102', '200, 200, 200', '0, 51, 102', '255, 153, 255'];

app.use(express.static(path.join(__dirname, 'balloon')));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
    extended: true
}));

app.get('/', function (req, res) {
    res.sendFile(path.join(__dirname, 'balloon/index.html'));
});

app.get('/api/cal', function (req, res) {
    var pyPath = path.join(__dirname, 'python');
    fs.readdir(__dirname + '/python', function (err, files) {
        if (err) throw err;
        files.forEach(function (file) {
            PythonShell.run(file, {
                scriptPath: pyPath
            }, function (err) {
                if (err) throw err;
                console.log('cal data ' + file + ' finished');
            });
        });
    });
    var waittingTime = 0;
    fs.readdir(__dirname + '/uploads', function (err, files) {
        if (err) throw err;
        var filelen = files.length;
        waittingTime = 1300 * filelen;
        setTimeout(function () {
            res.json({
                success: true
            })
        }, waittingTime);
    });
});

app.post('/api/delFile', function (req, res) {
    var delfiles = req.body.filename;
    if (delfiles.length) {
        delfiles.forEach(function (delfile) {
            fs.unlink(path.join(__dirname, '/uploads/') + delfile, function (err) {
                if (err) {
                    return console.error(err);
                }
                console.log(delfile + ": deleted successfully!");
                fileList();
            });
        });
        res.json({
            success: true
        });
    }
});

app.get('/api/listFile', function (req, res) {
    fileList();
    res.json({
        success: true
    });
});

app.get('/api/getListFile', function (req, res) {
    fs.readdir(__dirname + '/uploads', function (err, files) {
        res.json({
            success: true,
            fileData: files
        });
    });
});

app.post('/api/setup', function (req, res) {
    var opts = req.body.options;
    fs.writeFile(path.join(__dirname, 'setting/setting.txt'), opts, function (error) {
        if (error) {
            console.error("write error:  " + error.message);
        }
    });
    res.json({
        success: true
    });
});

app.post('/upload', function (req, res) {

    // create an incoming form object
    var form = new formidable.IncomingForm();

    // specify that we want to allow the user to upload multiple files in a single request
    form.multiples = true;

    // store all uploads in the /uploads directory
    form.uploadDir = path.join(__dirname, '/uploads');

    // every time a file has been uploaded successfully,
    // rename it to it's orignal name
    form.on('file', function (field, file) {
        fs.rename(file.path, path.join(form.uploadDir, file.name));
    });

    // log any errors that occur
    form.on('error', function (err) {
        console.log('An error has occured: \n' + err);
    });

    // once all the files have been uploaded, send a response to the client
    form.on('end', function () {
        fileList();
        res.end('success');
    });

    // parse the incoming request containing the form data
    form.parse(req);

});

var server = app.listen(8000, function () {
    console.log('Server listening on port 8000');
});

var socket = io.listen(server);

// Add a connect listener
/*socket.on('connection', function(client){
	// Success!  Now listen to messages to be received
	client.on('message',function(event){
		fileList();
	});

});*/

//
var fileList = function () {
    var fileJson = ('[');
    fs.readdir(__dirname + '/uploads', function (err, files) {
        if (err) throw err;
        var filelen = files.length;
        for (var i = 0; i < filelen; i++) {
            fileJson += ('{ "id": "' + (i + 1) + '", "name": "' + files[i] + '", "color": " <p style= \'color:rgb(' + rgbColor[i % 10] + ')\'>▇▇▇</p> "}');
            if (i < filelen - 1)
                fileJson += (',');
        };
        fileJson += (']');
        fs.writeFile(path.join(__dirname, 'balloon/data/file.json'), fileJson, function (error) {
            if (error) {
                console.error("write error:  " + error.message);
            }
        });
    });
};


open("http://127.0.0.1:8000", 'chrome');