Harmonize command formats and ensure autocompletion is same

Author: alamirault

Command/LintCommand.php

@@ -57,7 +57,7 @@ protected function configure()
     {
         $this
             ->addArgument('filename', InputArgument::IS_ARRAY, 'A file, a directory or "-" for reading from STDIN')
-            ->addOption('format', null, InputOption::VALUE_REQUIRED, 'The output format')
+            ->addOption('format', null, InputOption::VALUE_REQUIRED, sprintf('The output format ("%s")', implode('", "', $this->getAvailableFormatOptions())))
             ->addOption('exclude', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY, 'Path(s) to exclude')
             ->addOption('parse-tags', null, InputOption::VALUE_NEGATABLE, 'Parse custom tags', null)
             ->setHelp(<<<EOF
@@ -154,7 +154,7 @@ private function display(SymfonyStyle $io, array $files): int
             'txt' => $this->displayTxt($io, $files),
             'json' => $this->displayJson($io, $files),
             'github' => $this->displayTxt($io, $files, true),
-            default => throw new InvalidArgumentException(sprintf('The format "%s" is not supported.', $this->format)),
+            default => throw new InvalidArgumentException(sprintf('Supported formats are "%s".', implode('", "', $this->getAvailableFormatOptions()))),
         };
     }
 
@@ -265,7 +265,12 @@ private function isReadable(string $fileOrDirectory): bool
     public function complete(CompletionInput $input, CompletionSuggestions $suggestions): void
     {
         if ($input->mustSuggestOptionValuesFor('format')) {
-            $suggestions->suggestValues(['txt', 'json', 'github']);
+            $suggestions->suggestValues($this->getAvailableFormatOptions());
         }
     }
+
+    private function getAvailableFormatOptions(): array
+    {
+        return ['txt', 'json', 'github'];
+    }
 }