https://energia-luce.it/day_night_mode.js

1// get the time slots json object
2var timeSlots = JSON.parse('{"0": {"start": 0.0, "end": 23.59, "mode": "app"}, "1": {"start": 9.0, "end": 18.0, "mode": "call"}, "2": {"start": 9.0, "end": 18.0, "mode": "call"}, "3": {"start": 9.0, "end": 18.0, "mode": "call"}, "4": {"start": 9.0, "end": 18.0, "mode": "call"}, "5": {"start": 9.0, "end": 17.0, "mode": "call"}, "6": {"start": 0.0, "end": 23.59, "mode": "app"}}');
3
4var dateObj = new Date();
5var currentHour = dateObj.getHours() + (dateObj.getUTCMinutes() / 100);
6
7var APP = 'app';
8var CALL = 'call';
9
10var modes = {};
11modes[APP] = "call-closed";
12modes[CALL] = "call-opened";
13
14var mode = APP;
15
16if (document.URL.indexOf('mode=' + APP) !== -1) {
17    mode = APP;
18} else if (document.URL.indexOf('mode=' + CALL) !== -1) {
19    mode = CALL;
20} else if (timeSlots !== null) {
21    var modesKeys = Object.keys(modes);
22    var timeSlot = timeSlots[dateObj.getUTCDay()];
23
24    // get the current mode
25    var timeSlotMode = timeSlot['mode'];
26    var theOtherMode = modesKeys[(modesKeys.indexOf(timeSlot['mode']) + 1) % modesKeys.length];
27    mode = currentHour >= timeSlot['start'] && currentHour <= timeSlot['end'] ? timeSlotMode : theOtherMode;
28}
29
30if (mode == APP) {
31    body = document.getElementById('body')
32    // remove the default call mode
33    body.classList.remove(modes[CALL]);
34    body.classList.add(modes[mode]);
35}
36
37// Set timeSlots on ppn-input-scheduler if element exists on the page
38document.addEventListener("DOMContentLoaded", () => {
39    const el_scheduler = document.querySelector('ppn-input-scheduler');
40    if (!el_scheduler) {
41        console.warn('ppn-input-scheduler not found on the page');
42        return;
43    }
44    el_scheduler.setAttribute('timeslots', JSON.stringify(timeSlots));
45})