generate calling codes (callingCodes) from international direct dialing info (idd)

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - sort `translations` alphabetically (#384)
 ### Build
 - add `files` in `package.json` to reduce package size (#388)
+- generate calling codes (`callingCodes`) from international direct dialing info (`idd`) (#389)
 
 ## [v4.0.0] - 2020-04-04
 ### Breaking changes

README.md

@@ -60,6 +60,7 @@ Each line contains the country:
  - land borders (`borders`)
  - land area in km² (`area`)
  - Emoji flag (`flag`)
+ - calling codes (`callingCodes`)
 
 #### Additional data
 The [data](https://github.com/mledoze/countries/tree/master/data) folder contains additional data such as the countries

src/MLD/Converter/AbstractConverter.php

@@ -51,6 +51,17 @@ public function save($outputFile = '')
                 $country = array_intersect_key($country, array_flip($this->fields));
             });
         }
+
+        // generate calling codes from idd codes
+        if (array_key_exists('idd', array_flip($this->fields))) {
+            $this->countries = array_map(static function ($country) {
+                $country['callingCodes'] = array_map(static function ($suffix) use ($country) {
+                    return $country['idd']['root'] . $suffix;
+                }, $country['idd']['suffixes']);
+                return $country;
+            }, $this->countries);
+        }
+
         return file_put_contents($this->outputDirectory . $outputFile, $this->convert());
     }