Clock and calendar

Helpers/Holidays.js

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+var _countryCode = null;
+var _regionCode = null;
+var _regionName = null;
+var _holidaysCache = {};
+
+function getCountryCode(callback) {
+    if (_countryCode) {
+        callback(_countryCode);
+        return;
+    }
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", "https://nominatim.openstreetmap.org/search?city="+ Settings.settings.weatherCity+"&country=&format=json&addressdetails=1&extratags=1", true);
+    xhr.onreadystatechange = function() {
+        if (xhr.readyState === XMLHttpRequest.DONE && xhr.status === 200) {
+            var response = JSON.parse(xhr.responseText);
+            _countryCode = response?.[0]?.address?.country_code ?? "US";
+            _regionCode = response?.[0]?.address?.["ISO3166-2-lvl4"] ?? "";
+            _regionName = response?.[0]?.address?.state ?? "";
+            callback(_countryCode);
+        }
+    }
+    xhr.send();
+}
+
+function getHolidays(year, countryCode, callback) {
+    var cacheKey = year + "-" + countryCode;
+    if (_holidaysCache[cacheKey]) {
+        callback(_holidaysCache[cacheKey]);
+        return;
+    }
+    var url = "https://date.nager.at/api/v3/PublicHolidays/" + year + "/" + countryCode;
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", url, true);
+    xhr.onreadystatechange = function() {
+        if (xhr.readyState === XMLHttpRequest.DONE && xhr.status === 200) {
+            var holidays = JSON.parse(xhr.responseText);
+            var augmentedHolidays = filterHolidaysByRegion(holidays);
+            _holidaysCache[cacheKey] = augmentedHolidays;
+            callback(augmentedHolidays);
+        }
+    }
+    xhr.send();
+}
+
+function filterHolidaysByRegion(holidays) {
+    if (!_regionCode) {
+        return holidays;
+    }
+    const retHolidays = [];
+    holidays.forEach(function(holiday) {
+        if (holiday.counties?.length > 0) {
+            let found = false;
+            holiday.counties.forEach(function(county) {
+                if (county.toLowerCase() === _regionCode.toLowerCase()) {
+                    found = true;
+                }
+            });
+            if (found) {
+                var regionText = " (" + _regionName + ")";
+                holiday.name = holiday.name + regionText;
+                holiday.localName = holiday.localName + regionText;
+                retHolidays.push(holiday);
+            }
+        } else {
+            retHolidays.push(holiday);
+        }
+    });
+    return retHolidays;
+}
+
+function getHolidaysForMonth(year, month, callback) {
+    getCountryCode(function(countryCode) {
+        getHolidays(year, countryCode, function(holidays) {
+            var filtered = holidays.filter(function(h) {
+                var date = new Date(h.date);
+                return date.getFullYear() === year && date.getMonth() === month;
+            });
+            callback(filtered);
+        });
+    });
+}