let lastPushId = "C"
const arduionoURL = "http://192.168.1.160"

function buttonPushAnimation(id) {
    if (id !== lastPushId) {
        document.getElementById(id).style.backgroundColor = "#2c2c36"
        document.getElementById(lastPushId).style.backgroundColor = "#252531"
        lastPushId = id

        httpGetAsync(arduionoURL + "/" + id)
    }
}


function httpGetAsync(theUrl, callback)
{
    var xmlHttp = new XMLHttpRequest();
    xmlHttp.onreadystatechange = function() {
        if (xmlHttp.readyState === 4 && xmlHttp.status === 200)
            callback(xmlHttp.responseText);
    }
    xmlHttp.open("GET", theUrl, true); // true for asynchronous
    xmlHttp.send(null);
}