Added purify-css

.editorconfig

@@ -0,0 +1,20 @@
+# Shopware 5 editor configuration normalization
+# http://editorconfig.org/
+
+# This is the top-most .editorconfig file; do not search in parent directories.
+root = true
+
+# All files.
+[*]
+end_of_line = lf
+indent_style = space
+indent_size = 4
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.ini]
+insert_final_newline = false

.gitignore

@@ -0,0 +1,2 @@
+.idea/
+vendor

.php_cs.dist

@@ -0,0 +1,23 @@
+<?php
+$finder = PhpCsFixer\Finder::create()->in(__DIR__);
+
+return PhpCsFixer\Config::create()
+    ->setUsingCache(false)
+    ->setRules(
+        [
+            '@PSR2' => true,
+            '@Symfony' => true,
+            'no_useless_else' => true,
+            'no_useless_return' => true,
+            'ordered_class_elements' => true,
+            'ordered_imports' => true,
+            'phpdoc_order' => true,
+            'phpdoc_summary' => false,
+            'blank_line_after_opening_tag' => false,
+            'concat_space' => ['spacing' => 'one'],
+            'array_syntax' => ['syntax' => 'short'],
+            'yoda_style' => ['equal' => false, 'identical' => false, 'less_and_greater' => false],
+            'binary_operator_spaces' => ['default' => null],
+        ]
+    )
+    ->setFinder($finder);

Commands/PurifyCssCommand.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace FroshPerformance\Commands;
+
+use Shopware\Commands\ShopwareCommand;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+class PurifyCssCommand extends ShopwareCommand
+{
+    public function execute(InputInterface $input, OutputInterface $output)
+    {
+        $purify = $this->container->get('frosh_performance.components.purify_css');
+        $io = new SymfonyStyle($input, $output);
+
+        if (!$purify->isRunnable()) {
+            $io->error('Please install first purify-css');
+            exit(1);
+        }
+
+        list($before, $after) = $this->container->get('frosh_performance.components.purify_css')->purify($input->getArgument('shopId'));
+
+        $io->success(sprintf('Purified css from %s to %s', $this->humanFilesize($before), $this->humanFilesize($after)));
+    }
+
+    protected function configure()
+    {
+        $this
+            ->setName('frosh:purify:css')
+            ->setDescription('Removes unused css styles')
+            ->addArgument('shopId', InputArgument::OPTIONAL, 'Shop id', 1);
+    }
+
+    private function humanFilesize($bytes, $decimals = 2)
+    {
+        $sz = 'BKMGTP';
+        $factor = floor((strlen($bytes) - 1) / 3);
+
+        return sprintf("%.{$decimals}f", $bytes / pow(1024, $factor)) . @$sz[$factor];
+    }
+}

Components/PurifyCss.php

@@ -0,0 +1,109 @@
+<?php
+
+namespace FroshPerformance\Components;
+
+use Shopware\Components\Model\ModelManager;
+use Shopware\Components\Theme\PathResolver;
+use Shopware\Components\Theme\TimestampPersistor;
+use Shopware\Models\Shop\Shop;
+use Symfony\Component\Process\ExecutableFinder;
+use Symfony\Component\Process\Process;
+
+class PurifyCss
+{
+    /**
+     * @var string
+     */
+    private $kernelRootDir;
+
+    /**
+     * @var PathResolver
+     */
+    private $pathResolver;
+
+    /**
+     * @var TimestampPersistor
+     */
+    private $timestampPersistor;
+
+    /**
+     * @var ModelManager
+     */
+    private $manager;
+
+    /**
+     * PurifyCss constructor.
+     *
+     * @param string             $kernelRootDir
+     * @param TimestampPersistor $timestampPersistor
+     * @param PathResolver       $pathResolver
+     * @param ModelManager       $manager
+     */
+    public function __construct($kernelRootDir, TimestampPersistor $timestampPersistor, PathResolver $pathResolver, ModelManager $manager)
+    {
+        $this->kernelRootDir = rtrim($kernelRootDir, '/');
+        $this->timestampPersistor = $timestampPersistor;
+        $this->pathResolver = $pathResolver;
+        $this->manager = $manager;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isRunnable()
+    {
+        $finder = new ExecutableFinder();
+
+        return (bool) $finder->find('purifycss');
+    }
+
+    /**
+     * @param int $shopId
+     *
+     * @return array
+     */
+    public function purify($shopId)
+    {
+        $finder = new ExecutableFinder();
+        $timestamp = $this->timestampPersistor->getCurrentTimestamp($shopId);
+
+        $shop = $this->manager->find(Shop::class, $shopId);
+
+        if (!$shop) {
+            throw new \RuntimeException(sprintf('Shop with id %d does not exist', $shopId));
+        }
+
+        $fileName = $this->pathResolver->buildTimestampName($timestamp, $shop, 'css');
+        $filePath = $this->kernelRootDir . '/web/cache/' . $fileName;
+
+        $beforeSize = filesize($filePath);
+
+        $arguments = [
+            $this->kernelRootDir . '/themes/**/*.js',
+            $this->kernelRootDir . '/themes/**/*.tpl',
+            $this->kernelRootDir . '/custom/**/*.js',
+            $this->kernelRootDir . '/custom/**/*.tpl',
+            $this->kernelRootDir . '/engine/Shopware/Plugins/**/*.tpl',
+            $this->kernelRootDir . '/engine/Shopware/Plugins/**/*.js',
+            '-m',
+        ];
+
+        array_unshift($arguments, $filePath);
+        array_unshift($arguments, $finder->find('purifycss'));
+        array_unshift($arguments, $finder->find('node'));
+
+        $arguments[] = '-o';
+        $arguments[] = $filePath;
+
+        $process = new Process($arguments);
+        $process->run();
+
+        if ($process->getExitCode()) {
+            throw new \RuntimeException(sprintf('Purify failed with message %s and code %d', $process->getErrorOutput(), $process->getExitCode()));
+        }
+
+        $afterSize = filesize($filePath);
+
+        return [$beforeSize, $afterSize];
+    }
+}

README.md

@@ -12,6 +12,7 @@ Performance Improvments for Shopware
 * Minify Html Output
 * Http 2 Server Push [#1397](https://github.com/shopware/shopware/pull/1397)
 * Caching of plugin configuration
+* [Purify-CSS](https://github.com/purifycss/purifycss) Integration
 
 ## Requirements
 

Resources/services.xml

@@ -51,5 +51,16 @@
             <argument type="service" id="frosh_performance.components.cached_config_reader.inner"/>
             <argument type="service" id="cache"/>
         </service>
+
+        <service id="frosh_performance.commands.purify_css_command" class="FroshPerformance\Commands\PurifyCssCommand">
+            <tag name="console.command" command="frosh:purify:css"/>
+        </service>
+
+        <service id="frosh_performance.components.purify_css" class="FroshPerformance\Components\PurifyCss">
+            <argument>%shopware.app.rootdir%</argument>
+            <argument type="service" id="theme_timestamp_persistor"/>
+            <argument type="service" id="theme_path_resolver"/>
+            <argument type="service" id="models"/>
+        </service>
     </services>
 </container>