let wss = "ws://" + window.location.hostname + ":3001"  // Build socketio endpoint from window.location
const socket = io(wss);                                 // Connect to socketio server

socket.on('connected', (message) => {
    console.log("Connected");
})

socket.on('timerDurationLeft', (message) => {
    console.log(message)                                            // Log durationLeft in client console
    document.getElementById("durationLeft").innerHTML = message;    // Display durationLeft in corresponding html Element
});

socket.on('timerEnded', (message) => {
    document.getElementById("durationLeft").innerHTML = "ENDE";     // Display "STOP" in same html element as the duration
});

socket.on('refresh', (message) => {
    document.location.reload()                                      // Reload page on received 'refresh' messagen
});