function handleRequest(id, url) {
    var button = document.getElementById(id);

    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);

    xhr.onreadystatechange = function () {
        if (xhr.readyState === 4) {
            if (xhr.status === 200) {
                button.classList.remove("pure-button-primary");
                button.classList.add("success");
                button.innerHTML = (id === 'tc_on') ? "Enabled!" : "Disabled!";
                button.style.backgroundColor = "green";
                setTimeout(function () {
                    button.classList.remove("success");
                    button.classList.add("pure-button-primary");
                    button.innerHTML = (id === 'tc_on') ? "ON" : "OFF";
                    button.style.backgroundColor = "";
                }, 2000);
                console.log('Data successfully sent to server!');
            } else {
                button.classList.remove("pure-button-primary");
                button.classList.add("error");
                button.innerHTML = "Error!";
                button.style.backgroundColor = "";
                setTimeout(function () {
                    button.classList.remove("error");
                    button.classList.add("pure-button-primary");
                    button.innerHTML = (id === 'tc_on') ? "ON" : "OFF";
                    button.style.backgroundColor = "";
                }, 2000);
                showToast('Error while sending data to server.', 'error');
                console.log('Error while sending data to server.');
            }
        }
    };

    xhr.send();
}

function addButtonClickListener(id, url) {
    var link = document.getElementById(id);
    link.addEventListener('click', function (event) {
        event.preventDefault();
        handleRequest(id, url);
        document.getElementById(id).classList.add('pure-button-primary');
        document.getElementById(id === 'tc_on' ? 'tc_off' : 'tc_on').classList.remove('pure-button-primary');
    });
}

addButtonClickListener('tc_on', 'http://{{IP_ADDRESS}}/?tc=true');
addButtonClickListener('tc_off', 'http://{{IP_ADDRESS}}/?tc=false');

let timeoutId;
function sendSliderValue(x) {
    x = x - 1;
    clearTimeout(timeoutId);
    timeoutId = setTimeout(() => {
        var value = document.getElementById(`bri${x}`).value;
        var trans = document.getElementById('transition').value;
        if (isNaN(trans) || parseInt(trans) != trans)
        {
            showToast("Error the transition is not a valid integer number.", "error");
            return false;
        }

        var url = `http://{{IP_ADDRESS}}/?bri${x}=${value}&transition=`+parseInt(trans);
        fetch(url).then(response => {
            if (!response.ok) {
                throw new Error(`HTTP error! status: ${response.status}`);
            }
            //console.log(`Sent slider value ${value} to ${url}`);
        }).catch(error => {
            showToast(`Error sending slider value to ${url}: ${error}`, 'error');
            console.error(`Error sending slider value to ${url}: ${error}`);
        });
    }, 500);
}

function rgb2Hex(r, g, b) {
    // RGB-Werte in hexadezimale Werte umwandeln
    var hex = "#" + ((1 << 24) | (r << 16) | (g << 8) | b).toString(16).slice(1);
    return hex;
}