Weather app

app.js

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+const yargs = require('yargs');
+const geocode = require('./geocode/geocode');
+const weather = require('./weather/weather');
+
+const argv = yargs
+    .options({
+        a: {
+            demand: true,
+            alias: 'address',
+            describe: 'Address to fetch weather for',
+            string: true
+        }
+    })
+    .help()
+    .alias('help', 'h')
+    .argv;
+
+geocode.geocodeAddress(argv.address, (errorMsg, results) => {
+    if (errorMsg) {
+        console.log(errorMsg);
+    } else {
+        console.log(`Address:     ${results.address}`);
+        weather.getWeather(results.latitude, results.longitude, (errorMsg, results) => {
+            if (errorMsg) {
+                console.log(errorMsg);
+            } else {
+                console.log(`Summary:     ${results.summary}`);
+                console.log(`Temperature: ${results.temperature}°C`);
+                console.log(`Wind Speed:  ${results.windSpeed} km/h`);
+            }
+        });
+    }
+});
+

geocode/geocode.js

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+const request = require('request');
+
+const geocodeAddress = (address, callback) => {
+
+    const encodedAddress = encodeURIComponent(address);
+
+    request(
+        `http://maps.googleapis.com/maps/api/geocode/json?address=${encodedAddress}`, {
+            json: true
+        },
+        (error, response, body) => {
+            if (error) {
+                callback('ERR: Unable to connect to Google servers', undefined);
+            } else if (body.status === 'ZERO_RESULTS') {
+                callback('ERR: Unable to find address', undefined);
+            } else if (body.status === 'OK') {
+                callback(undefined, {
+                    address: body.results[0].formatted_address,
+                    latitude: body.results[0].geometry.location.lat,
+                    longitude: body.results[0].geometry.location.lng
+                });
+            } else if (body.status === 'OVER_QUERY_LIMIT') {
+                callback('ERR: The server is flooding! Please try after some time...', undefined);
+            }
+        }
+    );
+}
+
+module.exports = {
+    geocodeAddress
+}