Convert local to a WeatherProvider

routes/weatherProviders/local.ts

@@ -0,0 +1,83 @@
+import * as express	from "express";
+import { CronJob } from "cron";
+import { GeoCoordinates, WateringData, WeatherProvider } from "../../types";
+
+const count = { temp: 0, humidity: 0 };
+
+let	today: PWSStatus = {},
+	yesterday: PWSStatus = {},
+	last_bucket: Date,
+	current_date: Date = new Date();
+
+function sameDay(d1: Date, d2: Date): boolean {
+	return d1.getFullYear() === d2.getFullYear() &&
+			d1.getMonth() === d2.getMonth() &&
+			d1.getDate() === d2.getDate();
+}
+
+export const captureWUStream = function( req: express.Request, res: express.Response ) {
+	let prev: number, curr: number;
+
+	if ( !( "dateutc" in req.query ) || !sameDay( current_date, new Date( req.query.dateutc + "Z") )) {
+		res.send( "Error: Bad date range\n" );
+		return;
+	}
+
+	if ( ( "tempf" in req.query ) && !isNaN( curr = parseFloat( req.query.tempf ) ) && curr !== -9999.0 ) {
+		prev = ( "temp" in today ) ? today.temp : 0;
+		today.temp = ( prev * count.temp + curr ) / ( ++count.temp );
+	}
+	if ( ( "humidity" in req.query ) && !isNaN( curr = parseFloat( req.query.humidity ) ) && curr !== -9999.0 ) {
+		prev = ( "humidity" in today ) ? today.humidity : 0;
+		today.humidity = ( prev * count.humidity + curr ) / ( ++count.humidity );
+	}
+	if ( ( "dailyrainin" in req.query ) && !isNaN( curr = parseFloat( req.query.dailyrainin ) ) && curr !== -9999.0 ) {
+		today.precip = curr;
+	}
+	if ( ( "rainin" in req.query ) && !isNaN( curr = parseFloat( req.query.rainin ) ) && curr > 0 ) {
+		last_bucket = new Date();
+	}
+
+	console.log( "OpenSprinkler Weather Observation: %s", JSON.stringify( req.query ) );
+
+	res.send( "success\n" );
+};
+
+export const getLocalWateringData = function(): WateringData {
+	const result: WateringData = {
+		...yesterday as WateringData,
+		// Use today's weather if we dont have information for yesterday yet (i.e. on startup)
+		...today,
+		// PWS report "buckets" so consider it still raining if last bucket was less than an hour ago
+		raining: last_bucket !== undefined ? ( ( Date.now() - +last_bucket ) / 1000 / 60 / 60 < 1 ) : undefined,
+		weatherProvider: "local"
+	};
+
+	if ( "precip" in yesterday && "precip" in today ) {
+		result.precip = yesterday.precip + today.precip;
+	}
+
+	return result;
+};
+
+new CronJob( "0 0 0 * * *", function() {
+
+	yesterday = Object.assign( {}, today );
+	today = Object.assign( {} );
+	count.temp = 0; count.humidity = 0;
+	current_date = new Date();
+}, null, true );
+
+
+interface PWSStatus {
+	temp?: number;
+	humidity?: number;
+	precip?: number;
+}
+
+const LocalWeatherProvider: WeatherProvider = {
+	getWateringData: async function ( coordinates: GeoCoordinates ) {
+		return getLocalWateringData();
+	}
+};
+export default LocalWeatherProvider;