101 lines
3.8 KiB
TypeScript
101 lines
3.8 KiB
TypeScript
import { GeoCoordinates, WeatherData, ZimmermanWateringData } from "../../types";
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import { httpJSONRequest } from "../weather";
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import { WeatherProvider } from "./WeatherProvider";
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export default class OWMWeatherProvider extends WeatherProvider {
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private readonly API_KEY: string;
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public constructor() {
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super();
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this.API_KEY = process.env.OWM_API_KEY;
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if (!this.API_KEY) {
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throw "OWM_API_KEY environment variable is not defined.";
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}
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}
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public async getWateringData( coordinates: GeoCoordinates ): Promise< ZimmermanWateringData > {
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const forecastUrl = `http://api.openweathermap.org/data/2.5/forecast?appid=${ this.API_KEY }&units=imperial&lat=${ coordinates[ 0 ] }&lon=${ coordinates[ 1 ] }`;
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// Perform the HTTP request to retrieve the weather data
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let forecast;
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try {
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forecast = await httpJSONRequest( forecastUrl );
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} catch ( err ) {
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console.error( "Error retrieving weather information from OWM:", err );
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throw "An error occurred while retrieving weather information from OWM."
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}
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// Indicate watering data could not be retrieved if the forecast data is incomplete.
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if ( !forecast || !forecast.list ) {
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throw "Necessary field(s) were missing from weather information returned by OWM.";
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}
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let totalTemp = 0,
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totalHumidity = 0,
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totalPrecip = 0;
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const periods = Math.min( forecast.list.length, 8 );
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for ( let index = 0; index < periods; index++ ) {
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totalTemp += parseFloat( forecast.list[ index ].main.temp );
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totalHumidity += parseInt( forecast.list[ index ].main.humidity );
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totalPrecip += ( forecast.list[ index ].rain ? parseFloat( forecast.list[ index ].rain[ "3h" ] || 0 ) : 0 );
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}
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return {
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weatherProvider: "OWM",
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temp: totalTemp / periods,
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humidity: totalHumidity / periods,
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precip: totalPrecip / 25.4,
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raining: ( forecast.list[ 0 ].rain ? ( parseFloat( forecast.list[ 0 ].rain[ "3h" ] || 0 ) > 0 ) : false )
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};
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}
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public async getWeatherData( coordinates: GeoCoordinates ): Promise< WeatherData > {
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const currentUrl = `http://api.openweathermap.org/data/2.5/weather?appid=${ this.API_KEY }&units=imperial&lat=${ coordinates[ 0 ] }&lon=${ coordinates[ 1 ] }`,
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forecastDailyUrl = `http://api.openweathermap.org/data/2.5/forecast/daily?appid=${ this.API_KEY }&units=imperial&lat=${ coordinates[ 0 ] }&lon=${ coordinates[ 1 ] }`;
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let current, forecast;
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try {
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current = await httpJSONRequest( currentUrl );
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forecast = await httpJSONRequest( forecastDailyUrl );
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} catch ( err ) {
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console.error( "Error retrieving weather information from OWM:", err );
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throw "An error occurred while retrieving weather information from OWM."
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}
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// Indicate watering data could not be retrieved if the forecast data is incomplete.
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if ( !current || !current.main || !current.wind || !current.weather || !forecast || !forecast.list ) {
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throw "Necessary field(s) were missing from weather information returned by OWM.";
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}
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const weather: WeatherData = {
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weatherProvider: "OWM",
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temp: parseInt( current.main.temp ),
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humidity: parseInt( current.main.humidity ),
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wind: parseInt( current.wind.speed ),
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description: current.weather[ 0 ].description,
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icon: current.weather[ 0 ].icon,
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region: forecast.city.country,
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city: forecast.city.name,
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minTemp: parseInt( forecast.list[ 0 ].temp.min ),
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maxTemp: parseInt( forecast.list[ 0 ].temp.max ),
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precip: ( forecast.list[ 0 ].rain ? parseFloat( forecast.list[ 0 ].rain || 0 ) : 0 ) / 25.4,
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forecast: []
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};
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for ( let index = 0; index < forecast.list.length; index++ ) {
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weather.forecast.push( {
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temp_min: parseInt( forecast.list[ index ].temp.min ),
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temp_max: parseInt( forecast.list[ index ].temp.max ),
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date: parseInt( forecast.list[ index ].dt ),
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icon: forecast.list[ index ].weather[ 0 ].icon,
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description: forecast.list[ index ].weather[ 0 ].description
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} );
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}
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return weather;
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}
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}
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