index.js

#!/usr/bin/env node

'use strict';

const chalk = require('chalk');
const geoip = require('geoip-lite');

const Promise = require("bluebird");
const getIP = Promise.promisify(require('external-ip')());
const request = Promise.promisify(require("request"));

const apiKey = `76957a3496452bd2575b65ed7311817b`;

getIP().then( ip => {
	return geoip.lookup(ip); // get the user's external ip address
}).then(geoInfo => {
	const query = generateQuery(geoInfo);
	return request(query); // make the api call using request
}).then(res => {
	const info = JSON.parse(res.body); // parse the response and convert it to JSON

	const name = info.name;
	const temp = info.main.temp;
	const humidity = info.main.humidity;
	const wind = info.wind.speed;
	const conditions = info.weather[0].main
	/*const icon = info.weather[0].icon;*/

	// Can use `info.name` or `location` for showing the user's location in the console log statements
	// Log the information in a pretty format
	console.log(
		chalk.bgBlue(` Weather in ${name} `) +
		chalk.bgGreen.blue('') +
		chalk.bgGreen(` ${Math.floor(temp)}°F `) +
		chalk.bgKeyword('orange').green('') +
		chalk.bgKeyword('orange')(chalk.black(` Wind: ${wind} mph `)) +
		chalk.bgRed.keyword('orange')('') +
		chalk.bgRed(` Humidity: ${humidity}% `) +
		chalk.bgWhite.red('') +
		chalk.bgWhite.black(` Condition is: ${conditions} `) +
		chalk.white(``) +
		chalk.black('')
	);
}).catch( err => {
	console.log(chalk.red(err));
});

function generateQuery(geo) {
	try {
		const zip = process.argv.slice(2)[0] || normalizeZipCode(geo.zip);
		const zipRegex = new RegExp(/(^\d{5}$)|(^\d{5}-\d{4}$)/);

		// If the user passed in an arg, try and parse it
		if (zipRegex.test(zip)) {
			return `http://api.openweathermap.org/data/2.5/weather?zip=${zip},${geo.country.toLowerCase()}&units=imperial&APPID=${apiKey}`; // generate the query string for the api
		} else {
			console.log(`Parameter '${zip}' not understood, falling back to your location`);
		}
	} catch (err) {
		const lat = geo.ll[0];
		const lon = geo.ll[1];
		return `http://api.openweathermap.org/data/2.5/weather?units=imperial&lat=${lat}&lon=${lon}&APPID=${apiKey}`;
	}
}

function normalizeZipCode(zipcode) {
	let normalized = zipcode.toString();
	const length = normalized.length;
	const extraPadding = 5 - length;

	for (let i = 0; i < extraPadding; i++) {
		normalized = `0` + zipcode;
	}

	return normalized;
}