feat: add command to build hyva themes

README.md

@@ -969,6 +969,12 @@ n98-magerun2.phar dev:asset:clear --theme=Magento/luma
 n98-magerun2.phar dev:theme:list
 ```
 
+### Build Hyva Theme CSS
+
+```sh
+n98-magerun2.phar dev:theme:build-hyva --theme=Hyva/default
+```
+
 ---
 
 ### Create Module Skeleton

config.yaml

@@ -133,6 +133,7 @@ commands:
     - N98\Magento\Command\Developer\SymlinksCommand
     - N98\Magento\Command\Developer\TemplateHintsBlocksCommand
     - N98\Magento\Command\Developer\TemplateHintsCommand
+    - N98\Magento\Command\Developer\Theme\BuildHyvaThemeCommand
     - N98\Magento\Command\Developer\Theme\ListCommand
     - N98\Magento\Command\Developer\Translate\InlineAdminCommand
     - N98\Magento\Command\Developer\Translate\InlineShopCommand

src/N98/Magento/Command/Developer/Theme/BuildHyvaThemeCommand.php

@@ -0,0 +1,103 @@
+<?php
+
+namespace N98\Magento\Command\Developer\Theme;
+
+use Magento\Theme\Model\ResourceModel\Theme\Collection as ThemeCollection;
+use N98\Magento\Command\AbstractMagentoCommand;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Class BuildHyvaCommand
+ * @package N98\Magento\Command\Developer\Theme
+ */
+class BuildHyvaThemeCommand extends AbstractMagentoCommand
+{
+    /**
+     * @var ThemeCollection
+     */
+    protected $themeCollection;
+
+    protected function configure()
+    {
+        $this
+            ->setName('dev:theme:build-hyva')
+            ->setDescription('Build Hyvä theme CSS')
+            ->addOption(
+                'watch',
+                'w',
+                InputOption::VALUE_NONE,
+                'Watch for changes and rebuild automatically'
+            )
+            ->addOption(
+                'production',
+                'p',
+                InputOption::VALUE_NONE,
+                'Build for production (minified)'
+            )
+            ->addOption(
+                'theme',
+                't',
+                InputOption::VALUE_REQUIRED,
+                'Hyvä Theme to build (e.g. Hyva/default)'
+            );
+    }
+
+    /**
+     * @param ThemeCollection $themeCollection
+     */
+    public function inject(ThemeCollection $themeCollection)
+    {
+        $this->themeCollection = $themeCollection;
+    }
+
+    /**
+     * @param \Symfony\Component\Console\Input\InputInterface $input
+     * @param \Symfony\Component\Console\Output\OutputInterface $output
+     * @return int
+     * @throws \Exception
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $themePath = $input->getOption('theme');
+        if (empty($themePath)) {
+            throw new \InvalidArgumentException('Theme path is required. Use --theme option.');
+        }
+
+        $theme = $this->themeCollection->getThemeByFullPath($themePath);
+        if (!$theme) {
+            throw new \InvalidArgumentException(sprintf('Theme "%s" not found.', $themePath));
+        }
+
+        $themeDir = BP . '/app/design/frontend/' . $themePath;
+        if (!is_dir($themeDir)) {
+            throw new \InvalidArgumentException(sprintf('Theme directory "%s" not found.', $themeDir));
+        }
+
+        $isWatch = $input->getOption('watch');
+        $isProduction = $input->getOption('production');
+
+        $command = 'cd ' . $themeDir . ' && ';
+
+        if ($isWatch) {
+            $command .= 'npm run watch';
+            $output->writeln(sprintf('<info>Building CSS for theme "%s"...</info>', $themePath));
+            $output->writeln(sprintf('<info>Watching for changes. Press Ctrl+C to stop.</info>'));
+
+            $process = proc_open($command, [
+                0 => STDIN,
+                1 => STDOUT,
+                2 => STDERR,
+            ], $pipes);
+
+            return proc_close($process);
+        }
+
+        if ($isProduction) {
+            $command .= 'npm run build-prod';
+            $output->writeln(sprintf('<info>Building CSS for theme "%s"...</info>', $themePath));
+            return Command::SUCCESS;
+        }
+    }
+}