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compare: markmental:2e304d41c660195eb867b02349ed672ca109edba
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No commits in common. "a88e55a8a1a8d88ca455d12fc65cfd7e55f0be29" and "2e304d41c660195eb867b02349ed672ca109edba" have entirely different histories.
a88e55a8a1 ... 2e304d41c6

5 changed files with 24 additions and 323 deletions
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1
gulp/publish-frontend.mjs
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@ -134,7 +134,6 @@ const compressHtml = async () => src(htmlSources)
const otherFiles = [
'server/robots.txt',
'server/manifest.json',
'server/alert/**/*.mp3',
'server/music/**/*.mp3',
];
const copyOtherFiles = () => src(otherFiles, { base: 'server/', encoding: false })

BIN
server/alert/tone.mp3
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15
server/scripts/modules/hazards.mjs
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@ -1,9 +1,7 @@
// hourly forecast list
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';
@ -57,6 +55,13 @@ class Hazards extends WeatherDisplay {
async getData(weatherParameters, refresh) {
// super checks for enabled
const superResult = super.getData(weatherParameters, refresh);
if (!this.weatherParameters?.supportsNoaaAlerts) {
this.data = [];
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.
@ -74,9 +79,6 @@ class Hazards extends WeatherDisplay {
try {
const previousSignature = this.alertSignature;
if (!this.weatherParameters?.supportsNoaaAlerts) {
this.data = deriveHazards(this.weatherParameters);
} else {
// 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}`);
@ -96,9 +98,7 @@ class Hazards extends WeatherDisplay {
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);
const alertsChanged = previousSignature !== this.alertSignature;
if (alertsChanged) {
this.viewedAlerts.clear();
@ -129,7 +129,6 @@ class Hazards extends WeatherDisplay {
}
} catch (error) {
console.error(`Unexpected Active Alerts error: ${error.message}`);
setAlertToneActive(false);
if (this.isEnabled) this.setStatus(STATUS.failed);
// return undefined to other subscribers
this.getDataCallback(undefined);

94
server/scripts/modules/media.mjs
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@ -1,22 +1,13 @@
import { text } from './utils/fetch.mjs';
import Setting from './utils/setting.mjs';
import { registerHiddenSetting } from './share.mjs';
import { withBasePath } from './utils/base-path.mjs';
let playlist;
let currentTrack = 0;
let player;
let alertTonePlayer;
let sliderTimeout = null;
let volumeSlider = null;
let volumeSliderInput = null;
let alertToneActive = false;
let alertTonePending = false;
let resumeMediaAfterAlertTone = false;
let audioUnlocked = false;
let alertToneTimeout = null;
const ALERT_TONE_DURATION_MS = 30_000;
const mediaPlaying = new Setting('mediaPlaying', {
name: 'Media Playing',
@ -42,26 +33,11 @@ document.addEventListener('DOMContentLoaded', () => {
// get the playlist
getMedia();
registerAudioUnlockHandlers();
// register the volume setting
registerHiddenSetting(mediaVolume.elemId, mediaVolume);
});
const unlockAudio = () => {
if (audioUnlocked) return;
audioUnlocked = true;
if (alertToneActive && alertTonePending) {
startAlertTone();
}
};
const registerAudioUnlockHandlers = () => {
['pointerdown', 'keydown', 'touchstart'].forEach((eventName) => {
document.addEventListener(eventName, unlockAudio, { passive: true, once: true });
});
};
const scanMusicDirectory = async () => {
const parseDirectory = async (path, prefix = '') => {
const listing = await text(path);
@ -194,7 +170,6 @@ const startMedia = async () => {
if (!player) {
initializePlayer();
} else {
if (alertToneActive) return;
try {
await player.play();
setTrackName(playlist.availableFiles[currentTrack]);
@ -300,73 +275,6 @@ const initializePlayer = () => {
volumeSliderInput.value = Math.round(mediaVolume.value * 100);
};
const initializeAlertTonePlayer = () => {
if (alertTonePlayer) return;
alertTonePlayer = new Audio(withBasePath('alert/tone.mp3'));
alertTonePlayer.type = 'audio/mpeg';
alertTonePlayer.preload = 'auto';
alertTonePlayer.addEventListener('ended', () => {
if (alertToneActive) {
alertTonePlayer.currentTime = 0;
alertTonePlayer.play().catch((e) => {
console.error('Couldn\'t continue alert tone');
console.error(e);
});
}
});
};
const startAlertTone = async () => {
if (!audioUnlocked) {
alertTonePending = true;
return;
}
initializeAlertTonePlayer();
try {
await alertTonePlayer.play();
alertTonePending = false;
resumeMediaAfterAlertTone = mediaPlaying.value === true;
if (alertToneTimeout) clearTimeout(alertToneTimeout);
alertToneTimeout = setTimeout(() => {
if (alertToneActive) {
setAlertToneActive(false);
}
}, ALERT_TONE_DURATION_MS);
if (player && !player.paused) {
player.pause();
}
} catch (e) {
console.error('Couldn\'t play alert tone');
console.error(e);
}
};
const stopAlertTone = () => {
alertTonePending = false;
if (alertToneTimeout) {
clearTimeout(alertToneTimeout);
alertToneTimeout = null;
}
if (alertTonePlayer) {
alertTonePlayer.pause();
alertTonePlayer.currentTime = 0;
}
if (resumeMediaAfterAlertTone && mediaPlaying.value === true) {
startMedia();
}
resumeMediaAfterAlertTone = false;
};
const setAlertToneActive = (active) => {
if (active === alertToneActive) return;
alertToneActive = active;
if (alertToneActive) {
startAlertTone();
return;
}
stopAlertTone();
};
const playerCanPlay = async () => {
// check to make sure they user still wants music (protect against slow loading music)
if (!mediaPlaying.value) return;
@ -396,6 +304,6 @@ const setTrackName = (fileName) => {
};
export {
// eslint-disable-next-line import/prefer-default-export
handleClick,
setAlertToneActive,
};

205
server/scripts/modules/utils/derived-hazards.mjs
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@ -1,205 +0,0 @@
import { DateTime } from '../../vendor/auto/luxon.mjs';
const LOOKAHEAD_HOURS = 6;
const METERS_PER_MILE = 1609.344;
const KPH_PER_MPH = 1.609344;
const SEVERITY_RANK = {
Extreme: 2,
Severe: 1,
};
const RULE_PRIORITY = {
thunderstorm: 5,
freezing: 4,
snow: 3,
rain: 2,
wind: 1,
};
const WEATHER_CODES = {
freezing: new Set([56, 57, 66, 67]),
snow: new Set([71, 73, 75, 77, 85, 86]),
thunderstorm: new Set([95, 96, 99]),
rain: new Set([51, 53, 55, 61, 63, 65, 80, 81, 82]),
};
const thresholds = {
lowVisibilitySevere: 5 * METERS_PER_MILE,
lowVisibilityExtreme: 2 * METERS_PER_MILE,
gustSevere: 20 * KPH_PER_MPH,
gustExtreme: 35 * KPH_PER_MPH,
highWindSevere: 40 * KPH_PER_MPH,
highWindExtreme: 55 * KPH_PER_MPH,
freezingTempC: 1,
};
const buildDerivedHazard = ({ id, severity, description, priority }) => ({
id,
priority,
properties: {
event: 'Severe Weather Alert',
severity,
urgency: 'Expected',
description: `This is a derived local alert based on forecast conditions. ${description}`,
},
});
const getUpcomingHours = (weatherParameters) => {
const zone = weatherParameters?.timeZone || 'UTC';
const now = DateTime.now().setZone(zone);
const end = now.plus({ hours: LOOKAHEAD_HOURS });
const allHours = Object.values(weatherParameters?.forecast ?? {})
.flatMap((day) => day?.hours ?? [])
.map((hour) => ({
...hour,
forecastTime: DateTime.fromISO(hour.time, { zone }),
}))
.filter((hour) => hour.forecastTime.isValid)
.sort((a, b) => a.forecastTime.toMillis() - b.forecastTime.toMillis());
return allHours.filter((hour) => hour.forecastTime >= now && hour.forecastTime <= end);
};
const getWorstHour = (hours, evaluator) => hours.reduce((worst, hour) => {
const candidate = evaluator(hour);
if (!candidate) return worst;
if (!worst) return candidate;
if (SEVERITY_RANK[candidate.severity] > SEVERITY_RANK[worst.severity]) return candidate;
return worst;
}, null);
const evaluateThunderstorm = (hours) => getWorstHour(hours, (hour) => {
const code = Number(hour.weather_code ?? 0);
if (!WEATHER_CODES.thunderstorm.has(code)) return null;
if (code === 96 || code === 99) {
return {
severity: 'Extreme',
description: 'Thunderstorms with hail are possible in the next several hours and may create dangerous outdoor conditions.',
};
}
return {
severity: 'Severe',
description: 'Thunderstorms are possible in the next several hours and may create hazardous outdoor conditions.',
};
});
const evaluateFreezing = (hours) => getWorstHour(hours, (hour) => {
const code = Number(hour.weather_code ?? 0);
if (!WEATHER_CODES.freezing.has(code)) return null;
const temperature = hour.temperature_2m ?? Number.POSITIVE_INFINITY;
if (temperature > thresholds.freezingTempC) return null;
const visibility = hour.visibility ?? Number.POSITIVE_INFINITY;
const gusts = hour.wind_gusts_10m ?? 0;
const isExtreme = visibility <= thresholds.lowVisibilityExtreme || gusts >= thresholds.gustExtreme;
return {
severity: isExtreme ? 'Extreme' : 'Severe',
description: isExtreme
? 'Freezing precipitation with poor visibility or strong gusts is expected in the next several hours and may create dangerous travel conditions.'
: 'Freezing precipitation is expected in the next several hours and may create slippery travel conditions.',
};
});
const evaluateSnow = (hours) => getWorstHour(hours, (hour) => {
const code = Number(hour.weather_code ?? 0);
if (!WEATHER_CODES.snow.has(code)) return null;
const visibility = hour.visibility ?? Number.POSITIVE_INFINITY;
const gusts = hour.wind_gusts_10m ?? 0;
if (visibility <= thresholds.lowVisibilitySevere && gusts >= thresholds.gustSevere) {
return {
severity: visibility <= thresholds.lowVisibilityExtreme ? 'Extreme' : 'Severe',
description: visibility <= thresholds.lowVisibilityExtreme
? 'Snow, poor visibility, and gusty winds are expected in the next several hours and may create dangerous travel conditions.'
: 'Snow, reduced visibility, and gusty winds are expected in the next several hours and may create hazardous travel conditions.',
};
}
return null;
});
const evaluateRain = (hours) => getWorstHour(hours, (hour) => {
const code = Number(hour.weather_code ?? 0);
const visibility = hour.visibility ?? Number.POSITIVE_INFINITY;
const gusts = hour.wind_gusts_10m ?? 0;
const hasRain = WEATHER_CODES.rain.has(code) || (hour.rain ?? 0) > 0 || (hour.showers ?? 0) > 0;
if (!hasRain) return null;
if (visibility <= thresholds.lowVisibilityExtreme && gusts >= thresholds.gustExtreme) {
return {
severity: 'Extreme',
description: 'Heavy rain, very low visibility, and strong gusts are expected in the next several hours and may create dangerous travel conditions.',
};
}
if (visibility <= thresholds.lowVisibilitySevere && gusts >= thresholds.gustSevere) {
return {
severity: 'Severe',
description: 'Heavy rain, reduced visibility, and gusty winds are expected in the next several hours and may create hazardous travel conditions.',
};
}
return null;
});
const evaluateWind = (hours) => getWorstHour(hours, (hour) => {
const gusts = hour.wind_gusts_10m ?? 0;
if (gusts >= thresholds.highWindExtreme) {
return {
severity: 'Extreme',
description: 'Very strong wind gusts are expected in the next several hours and may create dangerous conditions for travel and outdoor activity.',
};
}
if (gusts >= thresholds.highWindSevere) {
return {
severity: 'Severe',
description: 'Strong wind gusts are expected in the next several hours and may create hazardous conditions for travel and outdoor activity.',
};
}
return null;
});
const deriveHazards = (weatherParameters) => {
const upcomingHours = getUpcomingHours(weatherParameters);
if (upcomingHours.length === 0) return [];
const thunderstormCandidate = evaluateThunderstorm(upcomingHours);
const freezingCandidate = evaluateFreezing(upcomingHours);
const snowCandidate = evaluateSnow(upcomingHours);
const rainCandidate = evaluateRain(upcomingHours);
const windCandidate = evaluateWind(upcomingHours);
const candidates = [
thunderstormCandidate && buildDerivedHazard({
id: 'derived-severe-weather-alert-thunderstorm',
priority: RULE_PRIORITY.thunderstorm,
...thunderstormCandidate,
}),
freezingCandidate && buildDerivedHazard({
id: 'derived-severe-weather-alert-freezing',
priority: RULE_PRIORITY.freezing,
...freezingCandidate,
}),
snowCandidate && buildDerivedHazard({
id: 'derived-severe-weather-alert-snow',
priority: RULE_PRIORITY.snow,
...snowCandidate,
}),
rainCandidate && buildDerivedHazard({
id: 'derived-severe-weather-alert-rain',
priority: RULE_PRIORITY.rain,
...rainCandidate,
}),
windCandidate && buildDerivedHazard({
id: 'derived-severe-weather-alert-wind',
priority: RULE_PRIORITY.wind,
...windCandidate,
}),
].filter(Boolean);
if (candidates.length === 0) return [];
candidates.sort((a, b) => {
const severityDiff = SEVERITY_RANK[b.properties.severity] - SEVERITY_RANK[a.properties.severity];
if (severityDiff !== 0) return severityDiff;
return b.priority - a.priority;
});
return [candidates[0]];
};
export default deriveHazards;