add dry-run

src/Command/FinalizeClassesCommand.php

@@ -14,6 +14,7 @@
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Style\SymfonyStyle;
 
@@ -40,6 +41,7 @@ protected function configure(): void
         $this->setDescription('Finalize classes without children');
 
         $this->addArgument('paths', InputArgument::IS_ARRAY | InputArgument::REQUIRED, 'Directories to finalize');
+        $this->addOption('dry-run', null, InputOption::VALUE_NONE, 'Do no change anything, only list classes about to be finalized');
     }
 
     /**
@@ -48,6 +50,7 @@ protected function configure(): void
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $paths = (array) $input->getArgument('paths');
+        $isDryRun = (array) $input->getOption('dry-run');
 
         $this->symfonyStyle->title('1. Detecting parent and entity classes');
 
@@ -86,24 +89,36 @@ protected function execute(InputInterface $input, OutputInterface $output): int
                 continue;
             }
 
-            $this->symfonyStyle->writeln(sprintf('File "%s" was finalized', $phpFileInfo->getRelativePathname()));
+            $this->symfonyStyle->writeln(sprintf(
+                'File "%s" %s finalized',
+                $phpFileInfo->getRelativePathname(),
+                $isDryRun ? 'would be' : 'was'
+            ));
 
             $finalizedContents = Strings::replace(
                 $phpFileInfo->getContents(),
                 self::NEWLINE_CLASS_START_REGEX,
                 'final class '
             );
 
+
             $finalizedFilePaths[] = $phpFileInfo->getRelativePath();
-            FileSystem::write($phpFileInfo->getRealPath(), $finalizedContents);
+
+            if ($isDryRun === false) {
+                FileSystem::write($phpFileInfo->getRealPath(), $finalizedContents);
+            }
         }
 
         if ($finalizedFilePaths === []) {
-            $this->symfonyStyle->success('Nothign to finalize');
+            $this->symfonyStyle->success('Nothing to finalize');
             return self::SUCCESS;
         }
 
-        $this->symfonyStyle->success(sprintf('%d classes were finalized', count($finalizedFilePaths)));
+        $this->symfonyStyle->success(sprintf(
+            '%d classes %s finalized',
+            count($finalizedFilePaths),
+            $isDryRun ? 'would be' : 'were'
+        ));
 
         return Command::SUCCESS;
     }