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New severe weather theme. Smart alerts deduced from weather conditions for locations outside US/NOAA
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mrkmntal 2026-04-10 12:49:19 -04:00
commit a88e55a8a1
3 changed files with 227 additions and 25 deletions
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47
server/scripts/modules/hazards.mjs
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@ -3,6 +3,7 @@
import STATUS from './status.mjs';
import { setAlertToneActive } from './media.mjs';
import { safeJson } from './utils/fetch.mjs';
import deriveHazards from './utils/derived-hazards.mjs';
import WeatherDisplay from './weatherdisplay.mjs';
import { registerDisplay } from './navigation.mjs';
import calculateScrollTiming from './utils/scroll-timing.mjs';
@ -56,14 +57,6 @@ class Hazards extends WeatherDisplay {
async getData(weatherParameters, refresh) {
// super checks for enabled
const superResult = super.getData(weatherParameters, refresh);
if (!this.weatherParameters?.supportsNoaaAlerts) {
this.data = [];
setAlertToneActive(false);
this.timing.totalScreens = 0;
this.getDataCallback();
this.setStatus(STATUS.loaded);
return;
}
// hazards performs a silent refresh, but does not fall back to a previous fetch if no data is available
// this is intentional to ensure the latest alerts only are displayed.
@ -81,24 +74,28 @@ class Hazards extends WeatherDisplay {
try {
const previousSignature = this.alertSignature;
// get the forecast using centralized safe handling
const url = new URL('https://api.weather.gov/alerts/active');
url.searchParams.append('point', `${this.weatherParameters.latitude},${this.weatherParameters.longitude}`);
url.searchParams.append('status', 'actual');
const alerts = await safeJson(url, { retryCount: 3, stillWaiting: () => this.stillWaiting() });
if (!alerts) {
if (debugFlag('verbose-failures')) {
console.warn('Active Alerts request failed; assuming no active alerts');
}
this.data = [];
if (!this.weatherParameters?.supportsNoaaAlerts) {
this.data = deriveHazards(this.weatherParameters);
} else {
const allUnsortedAlerts = alerts.features ?? [];
const unsortedAlerts = allUnsortedAlerts.slice(0, 5);
const hasImmediate = unsortedAlerts.reduce((acc, hazard) => acc || hazard.properties.urgency === 'Immediate', false);
const sortedAlerts = unsortedAlerts.sort((a, b) => (calcSeverity(b.properties.severity, b.properties.event)) - (calcSeverity(a.properties.severity, a.properties.event)));
const filteredAlerts = sortedAlerts.filter((hazard) => hazard.properties.severity !== 'Unknown' && (!hasImmediate || (hazard.properties.urgency === 'Immediate')));
this.data = filteredAlerts;
// get the forecast using centralized safe handling
const url = new URL('https://api.weather.gov/alerts/active');
url.searchParams.append('point', `${this.weatherParameters.latitude},${this.weatherParameters.longitude}`);
url.searchParams.append('status', 'actual');
const alerts = await safeJson(url, { retryCount: 3, stillWaiting: () => this.stillWaiting() });
if (!alerts) {
if (debugFlag('verbose-failures')) {
console.warn('Active Alerts request failed; assuming no active alerts');
}
this.data = [];
} else {
const allUnsortedAlerts = alerts.features ?? [];
const unsortedAlerts = allUnsortedAlerts.slice(0, 5);
const hasImmediate = unsortedAlerts.reduce((acc, hazard) => acc || hazard.properties.urgency === 'Immediate', false);
const sortedAlerts = unsortedAlerts.sort((a, b) => (calcSeverity(b.properties.severity, b.properties.event)) - (calcSeverity(a.properties.severity, a.properties.event)));
const filteredAlerts = sortedAlerts.filter((hazard) => hazard.properties.severity !== 'Unknown' && (!hasImmediate || (hazard.properties.urgency === 'Immediate')));
this.data = filteredAlerts;
}
}
this.alertSignature = getAlertSignature(this.data);
setAlertToneActive(this.data.length > 0);