indexdotjs

/* set-up server and socket */
const http = require('http');                   // load and initialise http pack
const express = require('express');             // load and initialise expess pack

const app = express();                          // create express application

const server = http.createServer(app);          // create HTTP server that passes requests to express application
/*
var http = require('http').Server(app);         // initialise app handler
var io = require('socket.io')(http);            // initialise socket.io module
*/
const router = express.Router();                // set_up router
    console.log('test');

app.get('/', function(req, res){                // make handler getting called at local address
    res.sendFile(__dirname + '/index.html');    // Serve this content to caller when webpage is loaded
});

app.get('/imagemap/', function(req, res){               // make handler getting called at local address
    res.sendFile(__dirname + '/image1.png');    // Serve this content to caller when webpage is loaded
});
/*
io.on('connection', function(socket){           // do something when user connects
    socket.on('chat message', function(msg){    // receive message from input
        io.emit('chat message', msg);           // distribute event to all connected systems
    });
});
*/

// express().use(express.static('/imagemap'));

server.listen(3000, function(){                 // Make http server listen on port 3000 for serving content
    console.log('listening on *:3000');         // write message ato console/debugger
    console.log('where the magic is happening');
});



/* set-up socket connection */
const socketIo = require('socket.io');          // set up web socket connections

const sio = socketIo(server);                   // Create socket.io server attatched to http server

const InputSocket = sio.of('/InputSpace')
        .on('connection', function (socket) {
            console.log('input connection established');    // tell debugger/logger that connection is established
            socket.on('status', function (data) {           // gets called when cliënt attempt a connection, function listen for events
                console.log('incomming data: ', data);      // show data on debugger/logger
                InputSocket.emit ('status', data);          // Transfer input data to cliënt
            });
    });

/* ^ Create transferring space for inputs to make cliënt connect to and synchronize cliënts data with existing serverdata ^ */

const OutputSocket = sio.of('/OutputSpace')
        .on('connection', function (socket) {
            console.log('Output connection established');   // tell debugger/logger that connection is established
            socket.on('status', function (data) {           // gets called when cliënt attempt a connection, function listen for events
                console.log('Transferring data: ', data);       // show data on debugger/logger
                OutputSocket.emit ('status', data);         // Transfer output data to cliënt
                OutputPins(data);
            });
    });

/* ^ Create transferring space for outputs to make cliënt connect to and synchronize cliënts data with existing serverdata ^ */

Inputs = [];
Outputs = [];

/* GPIO Handler */

const Gpio = require('pigpio').Gpio;                        // initialise pigpio module for further use

const GpioInputArray = [0, 1, 2, 3, 4, 5, 6, 7];            // define input array size
const GpioOutputArray = [9, 10, 11, 12, 13, 14, 15];        // define output array size

var GpioInputPin = [];                                      // create array variables
var GpioOutputPin = [];                                     // create array variables

const button1 = 19;                                         // define input pin for switch1

GpioInputArray.map(function (value, key) {                  // creates new array within defined size
    GpioInputPin[1] = new Gpio(button1, {                   // define GpioInputPin[1] as GPIO input, port pulled down and rising and falling edge controlled
                mode: Gpio.INPUT,
                pullUpDown: Gpio.PUD_DOWN,
                edge: Gpio.EITHER_EDGE
            });
    GpioInputPin[1].on('interrupt', function (level) {      // attach interrupt based event handler to GpioInputPin[1] to do routine if gpio state changes
        if (level == 0) {
            Inputs[1] = false;                              // make input state false
        }
        else {
            Inputs[1] = true;                               // make input state true
        }
        InputSocket.emit('status', inputs);                 // transfer changed state to socket
    });
});

function OutputPins(data) {
    Outputs = data;

}