var bodyParser = require('body-parser'); // Data conversion, JSON parsing
var express = require('express');
var https = require('https');
var http = require('http');
var path = require('path');
var fs = require('fs');

// Set up Express //////////////////////////////////////////////////////////////

var app = express();

app.use(express.static("./")); // Set root as current dir
app.use(express.json()); // Use JSON handler when parsing requests

// Set up server and start listening ///////////////////////////////////////////

http.createServer(app).listen(8000);
// https.createServer(options, app).listen(443);

// Add routes //////////////////////////////////////////////////////////////////

// Get root
app.get('/', function(rq, rs)
{
    rs.sendFile('./index.html')
});

// Get mates count
app.get('/mates', function(rq, rs)
{
    var data = fs.readFileSync('./mates.json');
    var json = JSON.parse(data);
    rs.send(json);
});

// Update mates count
app.post('/mates', function(rq, rs)
{
    var data = fs.readFileSync('./mates.json');
    var json = JSON.parse(data);

    var cooldownSecs = 60;
    var currentTime = new Date().getTime();
    var timeSinceLast = (currentTime - json.lastUpdate) / 1000;

    // Check if update was sent too quickly
    if (timeSinceLast < cooldownSecs)
    {
        rs
            .status(403)
            .json({
                error:"Update sent too quickly",
                cooldown: cooldownSecs,
                remaining: Math.ceil(cooldownSecs - timeSinceLast)
            });

        return;
    }

    json.mates += 1;
    json.lastUpdate = new Date().getTime();

    fs.writeFile('./mates.json', JSON.stringify(json), (err) => {
        if (err)
        {
            rs.sendStatus(500);
            throw err;
        }
    });

    rs.send(json);
});