Removed duplicated code by using a utils trait

module/CLI/src/Command/Shortcode/GenerateShortcodeCommand.php

@@ -6,6 +6,7 @@ namespace Shlinkio\Shlink\CLI\Command\Shortcode;
 use Shlinkio\Shlink\Core\Exception\InvalidUrlException;
 use Shlinkio\Shlink\Core\Exception\NonUniqueSlugException;
 use Shlinkio\Shlink\Core\Service\UrlShortenerInterface;
+use Shlinkio\Shlink\Core\Util\ShortUrlBuilderTrait;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
@@ -17,7 +18,9 @@ use Zend\I18n\Translator\TranslatorInterface;
 
 class GenerateShortcodeCommand extends Command
 {
-    const NAME = 'shortcode:generate';
+    use ShortUrlBuilderTrait;
+
+    public const NAME = 'shortcode:generate';
 
     /**
      * @var UrlShortenerInterface
@@ -116,9 +119,7 @@ class GenerateShortcodeCommand extends Command
                 $customSlug,
                 $maxVisits !== null ? (int) $maxVisits : null
             )->getShortCode();
-            $shortUrl = (string) (new Uri())->withPath($shortCode)
-                                            ->withScheme($this->domainConfig['schema'])
-                                            ->withHost($this->domainConfig['hostname']);
+            $shortUrl = $this->buildShortUrl($this->domainConfig, $shortCode);
 
             $io->writeln([
                 \sprintf('%s <info>%s</info>', $this->translator->translate('Processed long URL:'), $longUrl),

module/Core/src/Transformer/ShortUrlDataTransformer.php

@@ -6,10 +6,12 @@ namespace Shlinkio\Shlink\Core\Transformer;
 use Shlinkio\Shlink\Common\Rest\DataTransformerInterface;
 use Shlinkio\Shlink\Core\Entity\ShortUrl;
 use Shlinkio\Shlink\Core\Entity\Tag;
-use Zend\Diactoros\Uri;
+use Shlinkio\Shlink\Core\Util\ShortUrlBuilderTrait;
 
 class ShortUrlDataTransformer implements DataTransformerInterface
 {
+    use ShortUrlBuilderTrait;
+
     /**
      * @var array
      */
@@ -32,7 +34,7 @@ class ShortUrlDataTransformer implements DataTransformerInterface
 
         return [
             'shortCode' => $shortCode,
-            'shortUrl' => $this->buildShortUrl($shortCode),
+            'shortUrl' => $this->buildShortUrl($this->domainConfig, $shortCode),
             'longUrl' => $longUrl,
             'dateCreated' => $dateCreated !== null ? $dateCreated->format(\DateTime::ATOM) : null,
             'visitsCount' => $value->getVisitsCount(),
@@ -43,13 +45,6 @@ class ShortUrlDataTransformer implements DataTransformerInterface
         ];
     }
 
-    private function buildShortUrl(string $shortCode): string
-    {
-        return (string) (new Uri())->withPath($shortCode)
-                                   ->withScheme($this->domainConfig['schema'] ?? 'http')
-                                   ->withHost($this->domainConfig['hostname'] ?? '');
-    }
-
     private function serializeTag(Tag $tag): string
     {
         return $tag->getName();

module/Core/src/Util/ShortUrlBuilderTrait.php

@@ -0,0 +1,16 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Core\Util;
+
+use Zend\Diactoros\Uri;
+
+trait ShortUrlBuilderTrait
+{
+    private function buildShortUrl(array $domainConfig, string $shortCode): string
+    {
+        return (string) (new Uri())->withPath($shortCode)
+                                   ->withScheme($domainConfig['schema'] ?? 'http')
+                                   ->withHost($domainConfig['hostname'] ?? '');
+    }
+}