class static code cleanup

server/scripts/modules/regionalforecast-utils.mjs

@@ -0,0 +1,205 @@
+import { getWeatherRegionalIconFromIconLink } from './icons.mjs';
+import { preloadImg } from './utils/image.mjs';
+import { json } from './utils/fetch.mjs';
+
+const buildForecast = (forecast, city, cityXY) => ({
+	daytime: forecast.isDaytime,
+	temperature: forecast.temperature || 0,
+	name: formatCity(city.city),
+	icon: forecast.icon,
+	x: cityXY.x,
+	y: cityXY.y,
+	time: forecast.startTime,
+});
+
+const getRegionalObservation = async (point, city) => {
+	try {
+		// get stations
+		const stations = await json(`https://api.weather.gov/gridpoints/${city.point.wfo}/${city.point.x},${city.point.y}/stations`);
+
+		// get the first station
+		const station = stations.features[0].id;
+		// get the observation data
+		const observation = await json(`${station}/observations/latest`);
+		// preload the image
+		if (!observation.properties.icon) return false;
+		preloadImg(getWeatherRegionalIconFromIconLink(observation.properties.icon, !observation.properties.daytime));
+		// return the observation
+		return observation.properties;
+	} catch (e) {
+		console.log(`Unable to get regional observations for ${city.Name ?? city.city}`);
+		console.error(e.status, e.responseJSON);
+		return false;
+	}
+};
+
+// utility latitude/pixel conversions
+const getXYFromLatitudeLongitude = (Latitude, Longitude, OffsetX, OffsetY, state) => {
+	if (state === 'AK') return getXYFromLatitudeLongitudeAK(Latitude, Longitude, OffsetX, OffsetY);
+	if (state === 'HI') return getXYFromLatitudeLongitudeHI(Latitude, Longitude, OffsetX, OffsetY);
+	let y = 0;
+	let x = 0;
+	const ImgHeight = 1600;
+	const ImgWidth = 2550;
+
+	y = (50.5 - Latitude) * 55.2;
+	y -= OffsetY; // Centers map.
+	// Do not allow the map to exceed the max/min coordinates.
+	if (y > (ImgHeight - (OffsetY * 2))) {
+		y = ImgHeight - (OffsetY * 2);
+	} else if (y < 0) {
+		y = 0;
+	}
+
+	x = ((-127.5 - Longitude) * 41.775) * -1;
+	x -= OffsetX; // Centers map.
+	// Do not allow the map to exceed the max/min coordinates.
+	if (x > (ImgWidth - (OffsetX * 2))) {
+		x = ImgWidth - (OffsetX * 2);
+	} else if (x < 0) {
+		x = 0;
+	}
+
+	return { x, y };
+};
+
+const getXYFromLatitudeLongitudeAK = (Latitude, Longitude, OffsetX, OffsetY) => {
+	let y = 0;
+	let x = 0;
+	const ImgHeight = 1142;
+	const ImgWidth = 1200;
+
+	y = (73.0 - Latitude) * 56;
+	y -= OffsetY; // Centers map.
+	// Do not allow the map to exceed the max/min coordinates.
+	if (y > (ImgHeight - (OffsetY * 2))) {
+		y = ImgHeight - (OffsetY * 2);
+	} else if (y < 0) {
+		y = 0;
+	}
+
+	x = ((-175.0 - Longitude) * 25.0) * -1;
+	x -= OffsetX; // Centers map.
+	// Do not allow the map to exceed the max/min coordinates.
+	if (x > (ImgWidth - (OffsetX * 2))) {
+		x = ImgWidth - (OffsetX * 2);
+	} else if (x < 0) {
+		x = 0;
+	}
+
+	return { x, y };
+};
+
+const getXYFromLatitudeLongitudeHI = (Latitude, Longitude, OffsetX, OffsetY) => {
+	let y = 0;
+	let x = 0;
+	const ImgHeight = 571;
+	const ImgWidth = 600;
+
+	y = (25 - Latitude) * 55.2;
+	y -= OffsetY; // Centers map.
+	// Do not allow the map to exceed the max/min coordinates.
+	if (y > (ImgHeight - (OffsetY * 2))) {
+		y = ImgHeight - (OffsetY * 2);
+	} else if (y < 0) {
+		y = 0;
+	}
+
+	x = ((-164.5 - Longitude) * 41.775) * -1;
+	x -= OffsetX; // Centers map.
+	// Do not allow the map to exceed the max/min coordinates.
+	if (x > (ImgWidth - (OffsetX * 2))) {
+		x = ImgWidth - (OffsetX * 2);
+	} else if (x < 0) {
+		x = 0;
+	}
+
+	return { x, y };
+};
+
+const getMinMaxLatitudeLongitude = (X, Y, OffsetX, OffsetY, state) => {
+	if (state === 'AK') return getMinMaxLatitudeLongitudeAK(X, Y, OffsetX, OffsetY);
+	if (state === 'HI') return getMinMaxLatitudeLongitudeHI(X, Y, OffsetX, OffsetY);
+	const maxLat = ((Y / 55.2) - 50.5) * -1;
+	const minLat = (((Y + (OffsetY * 2)) / 55.2) - 50.5) * -1;
+	const minLon = (((X * -1) / 41.775) + 127.5) * -1;
+	const maxLon = ((((X + (OffsetX * 2)) * -1) / 41.775) + 127.5) * -1;
+
+	return {
+		minLat, maxLat, minLon, maxLon,
+	};
+};
+
+const getMinMaxLatitudeLongitudeAK = (X, Y, OffsetX, OffsetY) => {
+	const maxLat = ((Y / 56) - 73.0) * -1;
+	const minLat = (((Y + (OffsetY * 2)) / 56) - 73.0) * -1;
+	const minLon = (((X * -1) / 25) + 175.0) * -1;
+	const maxLon = ((((X + (OffsetX * 2)) * -1) / 25) + 175.0) * -1;
+
+	return {
+		minLat, maxLat, minLon, maxLon,
+	};
+};
+
+const getMinMaxLatitudeLongitudeHI = (X, Y, OffsetX, OffsetY) => {
+	const maxLat = ((Y / 55.2) - 25) * -1;
+	const minLat = (((Y + (OffsetY * 2)) / 55.2) - 25) * -1;
+	const minLon = (((X * -1) / 41.775) + 164.5) * -1;
+	const maxLon = ((((X + (OffsetX * 2)) * -1) / 41.775) + 164.5) * -1;
+
+	return {
+		minLat, maxLat, minLon, maxLon,
+	};
+};
+
+const getXYForCity = (City, MaxLatitude, MinLongitude, state) => {
+	if (state === 'AK') getXYForCityAK(City, MaxLatitude, MinLongitude);
+	if (state === 'HI') getXYForCityHI(City, MaxLatitude, MinLongitude);
+	let x = (City.lon - MinLongitude) * 57;
+	let y = (MaxLatitude - City.lat) * 70;
+
+	if (y < 30) y = 30;
+	if (y > 282) y = 282;
+
+	if (x < 40) x = 40;
+	if (x > 580) x = 580;
+
+	return { x, y };
+};
+
+const getXYForCityAK = (City, MaxLatitude, MinLongitude) => {
+	let x = (City.lon - MinLongitude) * 37;
+	let y = (MaxLatitude - City.lat) * 70;
+
+	if (y < 30) y = 30;
+	if (y > 282) y = 282;
+
+	if (x < 40) x = 40;
+	if (x > 580) x = 580;
+	return { x, y };
+};
+
+const getXYForCityHI = (City, MaxLatitude, MinLongitude) => {
+	let x = (City.lon - MinLongitude) * 57;
+	let y = (MaxLatitude - City.lat) * 70;
+
+	if (y < 30) y = 30;
+	if (y > 282) y = 282;
+
+	if (x < 40) x = 40;
+	if (x > 580) x = 580;
+
+	return { x, y };
+};
+
+// to fit on the map, remove anything after punctuation and then limit to 15 characters
+const formatCity = (city) => city.match(/[^-;/\\,]*/)[0].substr(0, 12);
+
+export {
+	buildForecast,
+	getRegionalObservation,
+	getXYFromLatitudeLongitude,
+	getMinMaxLatitudeLongitude,
+	getXYForCity,
+	formatCity,
+};