index-promise.js

const yargs=require('yargs');
const axios=require('axios');
const config=require('./config.js');
var API=config.DarkskyApiKEY;

var argv=yargs
	.options({
		a:{
			demand:true,
			alias:'address',
			describe:'Address to fetch weather for',
			string:true
		}
	})
	.help()
	.alias('help','h')
	.argv;
var encodedAddress=encodeURIComponent(argv.address);
var geocodeUrl=`https://maps.googleapis.com/maps/api/geocode/json?address=${encodedAddress}`;
axios.get(geocodeUrl).then((response)=>{
	if(response.data.status==='ZERO_RESULTS'){
		throw new Error('Unable to find that address')
	}
	var lat=response.data.results[0].geometry.location.lat;
	var lng=response.data.results[0].geometry.location.lng;
	var weatherUrl=`https://api.darksky.net/forecast/${API}/${lat},${lng}`;
	console.log(response.data.results[0].formatted_address);
	return axios.get(weatherUrl);
}).then((response)=>{
	var temperature=response.data.currently.temperature;
	var apparentTemperature=response.data.currently.apparentTemperature;
	console.log(`It is currently ${temperature}.It feels like ${apparentTemperature}`);
}).catch((e)=>{
	if(e.code==='ENOTFOUND'){
		console.log('Unable to connect to API servers');
	}else{
		console.log(e.message);
	}
});