reorganize for build system

server/scripts/modules/latestobservations.js

@@ -0,0 +1,129 @@
+// current weather conditions display
+/* globals WeatherDisplay, utils, STATUS, UNITS, draw, navigation, _StationInfo */
+
+// eslint-disable-next-line no-unused-vars
+class LatestObservations extends WeatherDisplay {
+	constructor(navId,elemId, weatherParameters) {
+		super(navId,elemId);
+		// pre-load background image (returns promise)
+		this.backgroundImage = utils.image.load('images/BackGround1_1.png');
+
+		// constants
+		this.MaximumRegionalStations = 7;
+		// get the data
+		this.getData(weatherParameters);
+	}
+
+	async getData(weatherParameters) {
+		// calculate distance to each station
+		const stationsByDistance = Object.keys(_StationInfo).map(key => {
+			const station = _StationInfo[key];
+			const distance = utils.calc.distance(station.Latitude, station.Longitude, weatherParameters.latitude, weatherParameters.longitude);
+			return Object.assign({}, station, {distance});
+		});
+
+		// sort the stations by distance
+		const sortedStations = stationsByDistance.sort((a,b) => a.distance - b.distance);
+		// try up to 30 regional stations
+		const regionalStations = sortedStations.slice(0,30);
+
+		// get data for regional stations
+		const allConditions = await Promise.all(regionalStations.map(async station => {
+			try {
+				const data = await $.ajax({
+					type: 'GET',
+					url: `https://api.weather.gov/stations/${station.StationId}/observations/latest`,
+					dataType: 'json',
+					crossDomain: true,
+				});
+				// format the return values
+				return Object.assign({}, data.properties, {
+					StationId: station.StationId,
+					City: station.City,
+				});
+			} catch (e) {
+				console.log(`Unable to get latest observations for ${station.StationId}`);
+				return;
+			}
+		}));
+		// remove and stations that did not return data
+		const actualConditions = allConditions.filter(condition => condition);
+		// cut down to the maximum of 7
+		this.data = actualConditions.slice(0,this.MaximumRegionalStations);
+
+		this.drawCanvas();
+	}
+
+	async drawCanvas() {
+		super.drawCanvas();
+		const conditions = this.data;
+
+		// sort array by station name
+		const sortedConditions = conditions.sort((a,b) => ((a.Name < b.Name) ? -1 : ((a.Name > b.Name) ? 1 : 0)));
+
+		this.context.drawImage(await this.backgroundImage, 0, 0);
+		draw.horizontalGradientSingle(this.context, 0, 30, 500, 90, draw.topColor1, draw.topColor2);
+		draw.triangle(this.context, 'rgb(28, 10, 87)', 500, 30, 450, 90, 500, 90);
+		draw.horizontalGradientSingle(this.context, 0, 90, 52, 399, draw.sideColor1, draw.sideColor2);
+		draw.horizontalGradientSingle(this.context, 584, 90, 640, 399, draw.sideColor1, draw.sideColor2);
+
+		draw.titleText(this.context, 'Latest', 'Observations');
+
+		if (navigation.units() === UNITS.english) {
+			draw.text(this.context, 'Star4000 Small', '24pt', '#FFFFFF', 295, 105, String.fromCharCode(176) + 'F', 2);
+		} else {
+			draw.text(this.context, 'Star4000 Small', '24pt', '#FFFFFF', 295, 105, String.fromCharCode(176) + 'C', 2);
+		}
+		draw.text(this.context, 'Star4000 Small', '24pt', '#FFFFFF', 345, 105, 'WEATHER', 2);
+		draw.text(this.context, 'Star4000 Small', '24pt', '#FFFFFF', 495, 105, 'WIND', 2);
+
+		let y = 140;
+
+		sortedConditions.forEach((condition) => {
+			let Temperature = condition.temperature.value;
+			let WindSpeed = condition.windSpeed.value;
+			const windDirection = utils.calc.directionToNSEW(condition.windDirection.value);
+
+			if (navigation.units() === UNITS.english) {
+				Temperature = utils.units.celsiusToFahrenheit(Temperature);
+				WindSpeed = utils.units.kphToMph(WindSpeed);
+			}
+
+			draw.text(this.context, 'Star4000', '24pt', '#FFFFFF', 65, y, condition.City.substr(0, 14), 2);
+			draw.text(this.context, 'Star4000', '24pt', '#FFFFFF', 345, y, this.shortenCurrentConditions(condition.textDescription).substr(0, 9), 2);
+
+			if (WindSpeed > 0) {
+				draw.text(this.context, 'Star4000', '24pt', '#FFFFFF', 495, y, windDirection + (Array(6 - windDirection.length - WindSpeed.toString().length).join(' ')) + WindSpeed.toString(), 2);
+			} else if (WindSpeed === 'NA') {
+				draw.text(this.context, 'Star4000', '24pt', '#FFFFFF', 495, y, 'NA', 2);
+			} else {
+				draw.text(this.context, 'Star4000', '24pt', '#FFFFFF', 495, y, 'Calm', 2);
+			}
+
+			const x = (325 - (Temperature.toString().length * 15));
+			draw.text(this.context, 'Star4000', '24pt', '#FFFFFF', x, y, Temperature, 2);
+
+			y += 40;
+		});
+		this.finishDraw();
+		this.setStatus(STATUS.loaded);
+	}
+
+	shortenCurrentConditions(condition) {
+		condition = condition.replace(/Light/, 'L');
+		condition = condition.replace(/Heavy/, 'H');
+		condition = condition.replace(/Partly/, 'P');
+		condition = condition.replace(/Mostly/, 'M');
+		condition = condition.replace(/Few/, 'F');
+		condition = condition.replace(/Thunderstorm/, 'T\'storm');
+		condition = condition.replace(/ in /, '');
+		condition = condition.replace(/Vicinity/, '');
+		condition = condition.replace(/ and /, ' ');
+		condition = condition.replace(/Freezing Rain/, 'Frz Rn');
+		condition = condition.replace(/Freezing/, 'Frz');
+		condition = condition.replace(/Unknown Precip/, '');
+		condition = condition.replace(/L Snow Fog/, 'L Snw/Fog');
+		condition = condition.replace(/ with /, '/');
+		return condition;
+	}
+}