Add support for setting default scale

cli.js

@@ -17,16 +17,16 @@ Options
   --scale, -s Weather scale. Defaults to Celcius
   --help Show this help message
   --version Display version info and exit
-  config Set the default location
+  config Set the default location and scale
 
 Examples
   $ weather -c Dhaka -C Bangladesh
   Dhaka, Bangladesh
   Condition: Partly Cloudy
   Temperature: 32°C
 
-  $ weather config -c Dhaka -C Bangladesh
-  Default location set to Dhaka, Bangladesh
+  $ weather config -c Dhaka -C Bangladesh -s F
+  Default location set to Dhaka, Bangladesh and scale to F
 `, {
   flags: {
     city: {

index.js

@@ -22,8 +22,9 @@ module.exports = {
         .then(res => {
           let result = Object.assign(res.data, { city: city, country: country, scale: flags.scale });
 
-          if (flags.scale === 'F') {
+          if (flags.scale === 'F' || config.get('scale') === 'F') {
             result.temp = _toFahrenheit(res.data.temp);
+            result.scale = 'F';
           }
 
           resolve(result);
@@ -39,7 +40,12 @@ module.exports = {
 
       config.set('city', opts.city);
       config.set('country', opts.country);
-      resolve(`Default location set to ${opts.city}, ${opts.country}`);
+
+      if (opts.scale) {
+        config.set('scale', opts.scale.toUpperCase());
+      }
+
+      resolve(`Default location set to ${opts.city}, ${opts.country} and scale to ${opts.scale ? opts.scale : 'C'}`);
     });
   }
 };

tests/tests.js

@@ -56,12 +56,18 @@ describe('Weather CLI', () => {
   describe('Configure defaults', () => {
     it('should print success message if config set successfully', () => {
       return weather.setLocation({city: 'Dhaka', country: 'Bangladesh'}).should.be.fulfilled.then(res => {
-        res.should.equal('Default location set to Dhaka, Bangladesh');
+        res.should.equal('Default location set to Dhaka, Bangladesh and scale to C');
       });
     });
 
     it('should return error if arguments are missing', () => {
       return weather.setLocation({city: 'Dhaka'}).should.be.rejected;
     });
+
+    it('should set custom location and scale', () => {
+      return weather.setLocation({city: 'Dhaka', country: 'Bangladesh', scale: 'F'}).should.be.fulfilled.then(res => {
+        res.should.equal('Default location set to Dhaka, Bangladesh and scale to F');
+      });
+    });
   });
 });