PSR12 code standard.

src/CommandShow.php

@@ -1,45 +1,46 @@
 <?php
+
 namespace App;
 
-use Symfony\Component\Console\Attribute\AsCommand;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Style\SymfonyStyle;
 
-
-#[AsCommand(
-    name: 'show',
-    description: 'Show all backup entries.',
-    hidden: false,
-)]
 class CommandShow extends Command
 {
-    static $defaultName = "show";
-    static $defaultDescription = "Show all backup entries";
+    public static $defaultName = "show";
+    public static $defaultDescription = "Show all backup entries";
 
     protected function configure(): void
     {
-        $this->addArgument('config', InputArgument::OPTIONAL, 'Configuration file', "config.yml");
+        $this->addArgument(
+            'config',
+            InputArgument::OPTIONAL,
+            'Configuration file',
+            "config.yml"
+        );
     }
 
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
-        $io = new SymfonyStyle($input, $output);
-        $io->title('List backup entities');
+        $sio = new SymfonyStyle($input, $output);
+        $sio->title('List backup entities');
 
         try {
             $app = new App($input->getArgument('config'));
-        }
-        catch (\Throwable $e) {
-            $io->error('Unable to parse the YAML string: '. $e->getMessage());
+        } catch (\Throwable $e) {
+            $sio->error('Configuration error: ' . $e->getMessage());
             return Command::FAILURE;
         }
 
-        $io->table(['Description', 'Source', 'Destination'], $app->getConfig()['backup']);
+        $sio->table(
+            ['Description', 'Source', 'Destination'],
+            $app->getConfig()['backup']
+        );
 
-        $io->success("Done");
+        $sio->success("Done");
         return Command::SUCCESS;
     }
-}
+}