Created ListTagsCommand

module/CLI/config/cli.config.php

@@ -17,6 +17,7 @@ return [
             Command\Api\GenerateKeyCommand::class,
             Command\Api\DisableKeyCommand::class,
             Command\Api\ListKeysCommand::class,
+            Command\Tag\ListTagsCommand::class,
         ]
     ],
 

module/CLI/config/dependencies.config.php

@@ -21,6 +21,7 @@ return [
             Command\Api\GenerateKeyCommand::class => AnnotatedFactory::class,
             Command\Api\DisableKeyCommand::class => AnnotatedFactory::class,
             Command\Api\ListKeysCommand::class => AnnotatedFactory::class,
+            Command\Tag\ListTagsCommand::class => AnnotatedFactory::class,
         ],
     ],
 

module/CLI/src/Command/Tag/ListTagsCommand.php

@@ -0,0 +1,69 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\CLI\Command\Tag;
+
+use Acelaya\ZsmAnnotatedServices\Annotation as DI;
+use Shlinkio\Shlink\Core\Entity\Tag;
+use Shlinkio\Shlink\Core\Service\Tag\TagService;
+use Shlinkio\Shlink\Core\Service\Tag\TagServiceInterface;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Helper\Table;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Zend\I18n\Translator\Translator;
+use Zend\I18n\Translator\TranslatorInterface;
+
+class ListTagsCommand extends Command
+{
+    /**
+     * @var TagServiceInterface
+     */
+    private $tagService;
+    /**
+     * @var TranslatorInterface
+     */
+    private $translator;
+
+    /**
+     * ListTagsCommand constructor.
+     * @param TagServiceInterface $tagService
+     * @param TranslatorInterface $translator
+     *
+     * @DI\Inject({TagService::class, Translator::class})
+     */
+    public function __construct(TagServiceInterface $tagService, TranslatorInterface $translator)
+    {
+        parent::__construct();
+        $this->tagService = $tagService;
+        $this->translator = $translator;
+    }
+
+    protected function configure()
+    {
+        $this
+            ->setName('tag:list')
+            ->setDescription('Lists existing tags');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $table = new Table($output);
+        $table->setHeaders([$this->translator->translate('Name')])
+              ->setRows($this->getTagsRows());
+
+        $table->render();
+    }
+
+    private function getTagsRows()
+    {
+        $tags = $this->tagService->listTags();
+        if (empty($tags)) {
+            return [[$this->translator->translate('No tags yet')]];
+        }
+
+        return array_map(function (Tag $tag) {
+            return [$tag->getName()];
+        }, $tags);
+    }
+}

module/Core/src/Service/Tag/TagService.php

@@ -29,6 +29,6 @@ class TagService implements TagServiceInterface
      */
     public function listTags()
     {
-        return $this->em->getRepository(Tag::class)->findBy([], ['name' => 'DESC']);
+        return $this->em->getRepository(Tag::class)->findBy([], ['name' => 'ASC']);
     }
 }