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Allow dynamic selection of weather provider

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This commit is contained in:
Matthew Oslan
2019-05-12 01:55:00 -04:00
parent 31af9d3320
commit ee31e736ba
3 changed files with 115 additions and 100 deletions
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105
routes/weather.ts
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@@ -6,7 +6,8 @@ import * as moment from "moment-timezone";
import * as geoTZ from "geo-tz";
import * as local from "./local";
import { AdjustmentOptions, GeoCoordinates, TimeData, WateringData, WeatherData } from "../types";
import { AdjustmentOptions, GeoCoordinates, TimeData, WateringData, WeatherData, WeatherProvider } from "../types";
const weatherProvider: WeatherProvider = require("./weatherProviders/" + ( process.env.WEATHER_PROVIDER || "OWM" ) ).default;
// Define regex filters to match against location
const filters = {
@@ -62,7 +63,7 @@ async function resolveCoordinates( location: string ): Promise< GeoCoordinates >
* @return A Promise that will be resolved the with parsed response body if the request succeeds, or will be rejected
* with an Error if the request or JSON parsing fails.
*/
async function httpJSONRequest(url: string ): Promise< any > {
export async function httpJSONRequest(url: string ): Promise< any > {
try {
const data: string = await httpRequest(url);
return JSON.parse(data);
@@ -72,102 +73,6 @@ async function httpJSONRequest(url: string ): Promise< any > {
}
}
/**
* Retrieves weather data necessary for watering level calculations from the OWM API.
* @param coordinates The coordinates to retrieve the watering data for.
* @return A Promise that will be resolved with WateringData if the API calls succeed, or resolved with undefined
* if an error occurs while retrieving the weather data.
*/
async function getOWMWateringData( coordinates: GeoCoordinates ): Promise< WateringData > {
const OWM_API_KEY = process.env.OWM_API_KEY,
forecastUrl = "http://api.openweathermap.org/data/2.5/forecast?appid=" + OWM_API_KEY + "&units=imperial&lat=" + coordinates[ 0 ] + "&lon=" + coordinates[ 1 ];
// Perform the HTTP request to retrieve the weather data
let forecast;
try {
forecast = await httpJSONRequest( forecastUrl );
} catch (err) {
// Indicate watering data could not be retrieved if an API error occurs.
return undefined;
}
// Indicate watering data could not be retrieved if the forecast data is incomplete.
if ( !forecast || !forecast.list ) {
return undefined;
}
let totalTemp = 0,
totalHumidity = 0,
totalPrecip = 0;
const periods = Math.min(forecast.list.length, 10);
for ( let index = 0; index < periods; index++ ) {
totalTemp += parseFloat( forecast.list[ index ].main.temp );
totalHumidity += parseInt( forecast.list[ index ].main.humidity );
totalPrecip += ( forecast.list[ index ].rain ? parseFloat( forecast.list[ index ].rain[ "3h" ] || 0 ) : 0 );
}
return {
temp: totalTemp / periods,
humidity: totalHumidity / periods,
precip: totalPrecip / 25.4,
raining: ( forecast.list[ 0 ].rain ? ( parseFloat( forecast.list[ 0 ].rain[ "3h" ] || 0 ) > 0 ) : false )
};
}
/**
* Retrieves the current weather data from OWM for usage in the mobile app.
* @param coordinates The coordinates to retrieve the weather for
* @return A Promise that will be resolved with the WeatherData if the API calls succeed, or resolved with undefined
* if an error occurs while retrieving the weather data.
*/
async function getOWMWeatherData( coordinates: GeoCoordinates ): Promise< WeatherData > {
const OWM_API_KEY = process.env.OWM_API_KEY,
currentUrl = "http://api.openweathermap.org/data/2.5/weather?appid=" + OWM_API_KEY + "&units=imperial&lat=" + coordinates[ 0 ] + "&lon=" + coordinates[ 1 ],
forecastDailyUrl = "http://api.openweathermap.org/data/2.5/forecast/daily?appid=" + OWM_API_KEY + "&units=imperial&lat=" + coordinates[ 0 ] + "&lon=" + coordinates[ 1 ];
let current, forecast;
try {
current = await httpJSONRequest( currentUrl );
forecast = await httpJSONRequest( forecastDailyUrl );
} catch (err) {
// Indicate watering data could not be retrieved if an API error occurs.
return undefined;
}
// Indicate watering data could not be retrieved if the forecast data is incomplete.
if ( !current || !current.main || !current.wind || !current.weather || !forecast || !forecast.list ) {
return undefined;
}
const weather: WeatherData = {
temp: parseInt( current.main.temp ),
humidity: parseInt( current.main.humidity ),
wind: parseInt( current.wind.speed ),
description: current.weather[0].description,
icon: current.weather[0].icon,
region: forecast.city.country,
city: forecast.city.name,
minTemp: parseInt( forecast.list[ 0 ].temp.min ),
maxTemp: parseInt( forecast.list[ 0 ].temp.max ),
precip: ( forecast.list[ 0 ].rain ? parseFloat( forecast.list[ 0 ].rain || 0 ) : 0 ) / 25.4,
forecast: []
};
for ( let index = 0; index < forecast.list.length; index++ ) {
weather.forecast.push( {
temp_min: parseInt( forecast.list[ index ].temp.min ),
temp_max: parseInt( forecast.list[ index ].temp.max ),
date: parseInt( forecast.list[ index ].dt ),
icon: forecast.list[ index ].weather[ 0 ].icon,
description: forecast.list[ index ].weather[ 0 ].description
} );
}
return weather;
}
/**
* Retrieves weather data necessary for watering level calculations from the a local record.
* @param coordinates The coordinates to retrieve the watering data for.
@@ -298,7 +203,7 @@ export const getWeatherData = async function( req: express.Request, res: express
// Continue with the weather request
const timeData: TimeData = getTimeData( coordinates );
const weatherData: WeatherData = await getOWMWeatherData( coordinates );
const weatherData: WeatherData = await weatherProvider.getWeatherData( coordinates );
res.json( {
...timeData,
@@ -381,7 +286,7 @@ export const getWateringData = async function( req: express.Request, res: expres
if ( local.useLocalWeather() ) {
wateringData = await getLocalWateringData( coordinates );
} else {
wateringData = await getOWMWateringData(coordinates);
wateringData = await weatherProvider.getWateringData(coordinates);
}