server.js

const express = require('express');
const path = require('path');
const bodyParser = require('body-parser');
const Pusher = require('pusher');
const dotenv = require('dotenv');

dotenv.load();

const pusher = new Pusher ({
	app_id = PUSHER_APPID,
	key = PUSHER_KEY,
	secret = PUSHER_SECRET,
	cluster = PUSHER_CLUSTER,
	encrypted: true
});

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(express.static(path.join(__dirname + '/app')));

app.set('port', (process.env.PORT || 5000));

let expensesList = {
        data: [
            {
                date: "April 15th 2017",
                expense: 100,
                income: 4000
            },
            {
                date: "April 22nd 2017",
                expense: 500,
                income: 2000
            },
            {
                date: "April 24th 2017",
                expense: 1000,
                income: 2300
            },
            {
                date: "April 29th 2017",
                expense: 2000,
                income: 1234
            },
            {
                date: "May 1st 2017",
                expense: 500,
                income: 4180
            },
            {
                date: "May 5th 2017",
                expense: 4000,
                income: 5000
            },
        ]
    }

app.get('/finances', (req,res) => {
	res.send(expensesList);
});

app.post('/expense/add', (req, res) => {
        let expense = Number(req.body.expense)
        let income = Number(req.body.income)
        let date = req.body.date;

        let newExpense  = {
            date: date,
            expense: expense,
            income: income
        };

        expensesList.data.push(newExpense);

        pusher.trigger('finance', 'new-expense', {
            newExpense: expensesList
        });

        res.send({
            success : true,
            income: income,
            expense: expense,
            date: date,
            data: expensesList
        })
    });


app.listen(app.get('port'), function(){
	console.log("Node Server is running on port ", app.get('port'));
});