index.js

var express = require('express');
var app = express();
var http = require("http");
var schedule = require('node-schedule');


var postToInstagram = require('./methods/postToInstagram.js');
var googleAPI = require("./methods/googleSpreadAPI.js");
var config = require('./config.js');

var j;


app.set('port', (process.env.PORT || 5000));
app.use(express.static(__dirname + '/public'));



app.get('/', function(request, response) {
    response.sendFile('index.html');
});

app.get('/api/post-now', function(request, response) {
    postToInstagram(j).then(function(res) {
        response.send(res);
    });
});

app.get('/api/next-post', function(request, response) {
    response.send(j.nextInvocation());
});



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

    var postInterval = process.env.POST_INTERVAL || config.POST_INTERVAL;

    j = schedule.scheduleJob(postInterval, function() {
        postToInstagram(j);
    });

    console.log('First post will be done at: ' + j.nextInvocation());


    setInterval(function() {
        console.log('keep alive');
        http.get(config.HEROKU_URL);
    }, 300000); // every 5 minutes (300000)
});