feat: add phpstan init command

dist/phpstan.neon

@@ -0,0 +1,5 @@
+parameters:
+	level: 6
+	paths:
+		- src
+		- tests

src/Command/PhpStanCommand.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Whitecat\Command;
+
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use Symfony\Component\Filesystem\Filesystem;
+use Whitecat\Service\PhpStanService;
+
+#[AsCommand(
+    name: 'phpstan:init',
+    description: 'Setup basic phpstan for PHP library',
+    hidden: false
+)]
+class PhpStanCommand extends Command
+{
+    protected function execute(InputInterface $input, OutputInterface $output): int
+    {
+        $io = new SymfonyStyle($input, $output);
+        $fs = new Filesystem();
+
+        return (new PhpStanService($io, $fs))->run();
+    }
+}

src/Service/PhpStanService.php

@@ -0,0 +1,80 @@
+<?php
+
+namespace Whitecat\Service;
+
+use PHPUnit\Framework\Attributes\CoversNothing;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\Filesystem\Path;
+use Whitecat\Enums\DirectoryPath;
+use Whitecat\Exception\InvalidComposerException;
+use Whitecat\Helper\ComposerHelper;
+use Whitecat\Helper\DirectoryCopyHelper;
+use Whitecat\Helper\FileCopyHelper;
+
+class PhpStanService
+{
+    protected readonly string $workflowDirectoryPath;
+    protected FileCopyHelper $fileCopyHelper;
+    protected ComposerHelper $composerHelper;
+
+    public function __construct(
+        protected readonly SymfonyStyle $io,
+        protected readonly Filesystem $fs
+    ) {
+        $this->workflowDirectoryPath = Path::normalize(DirectoryPath::WORKFLOW->value);
+        $this->fileCopyHelper        = new FileCopyHelper($this->io, $this->fs);
+        $this->composerHelper        = new ComposerHelper();
+    }
+
+    public function run(): int
+    {
+        $this->io->title('Setup basic PHPStan');
+
+        try {
+            $composer = $this->composerHelper->getComposerContent(
+                composerPath: './composer.json'
+            );
+        } catch (\JsonException $jsonException) {
+            $errorMessage = \sprintf('Error: %s ', $jsonException->getMessage());
+            $this->io->error($errorMessage);
+
+            return Command::FAILURE;
+        } catch (InvalidComposerException) {
+            $this->io->error('Invalid composer.json file!');
+
+            return Command::FAILURE;
+        }
+
+        $requireDev = $composer['require-dev'];
+
+        $isInstalledPhpUnit = \array_key_exists('phpstan/phpstan', $requireDev);
+
+        if (!$isInstalledPhpUnit) {
+            $this->io->warning('It seems that phpstan/phpstan is not installed');
+            $this->io->warning('Launch in terminal \'composer require --dev phpstan/phpstan\'');
+
+            return Command::FAILURE;
+        }
+
+        $this->addPHPUnitConfigFile();
+
+        $this->io->success('All work was correctly done!');
+
+        return Command::SUCCESS;
+    }
+
+    #[CoversNothing]
+    protected function addPHPUnitConfigFile(): void
+    {
+        $this->fileCopyHelper->copyFile(
+            fileName: 'phpstan.neon',
+            questionMessage: 'It seems that a phpstan.neon already exists, do you want to override?',
+            overrideCommentMessage: 'Adding phpstan.neon',
+            skippedMessage: 'Skipped creation of phpstan.neon',
+            sourceFileDirectory: '',
+            distFileDirectory: DirectoryPath::DIST_DIRECTORY->value
+        );
+    }
+}