edde-framework/edde-framework

<?php
    declare(strict_types=1);

    namespace Edde\Common\Web;

    use Edde\Api\File\FileException;
    use Edde\Api\File\IFile;
    use Edde\Api\File\LazyTempDirectoryTrait;
    use Edde\Api\Resource\IResourceList;
    use Edde\Api\Resource\LazyResourceProviderTrait;
    use Edde\Api\Web\IStyleSheetCompiler;
    use Edde\Api\Web\WebException;
    use Edde\Common\File\File;
    use Edde\Common\File\FileUtils;
    use Edde\Common\File\RealPathException;
    use Edde\Common\Resource\UnknownResourceException;
    use Edde\Common\Strings\StringException;
    use Edde\Common\Strings\StringUtils;
    use Edde\Common\Url\Url;

    /**
     * Compiler for stylesheets.
     */
    class StyleSheetCompiler extends AbstractCompiler implements IStyleSheetCompiler {
        use LazyTempDirectoryTrait;
        use LazyResourceProviderTrait;
        /**
         * ignored url schemes
         *
         * @var array
         */
        static private $schemeList = [
            'data',
        ];

        /**
         * @inheritdoc
         * @throws WebException
         * @throws StringException
         * @throws FileException
         */
        public function compile(IResourceList $resourceList = null): IFile {
            $content = [];
            $pathList = [];
            $resourceList = $resourceList ?: $this;
            $cache = $this->cache();
            $this->resourceProvider->setup();
            if (($file = $cache->load($cacheId = $resourceList->getResourceName())) === null) {
                foreach ($resourceList as $resource) {
                    if ($resource->isAvailable() === false) {
                        throw new WebException(sprintf('Cannot compile stylesheets: resource [%s] is not available (does not exists?).', (string)$resource->getUrl()));
                    }
                    $current = $this->filter($resource->get());
                    $urlList = StringUtils::matchAll($current, "~url\\(['\"](?<url>.*?)['\"]\\)~", true);
                    $resourcePath = $source = $resource->getUrl()->getPath();
                    $resourcePath = dirname($resourcePath);
                    foreach (empty($urlList) ? [] : array_unique($urlList['url']) as $item) {
                        $url = Url::create($file = str_replace([
                            '"',
                            "'",
                        ], null, $item));
                        if (in_array($url->getScheme(), self::$schemeList, true)) {
                            continue;
                        }
                        if (isset($pathList[$path = $url->getPath()])) {
                            $current = str_replace($item, '"' . $pathList[$path] . '"', $current);
                            continue;
                        }
                        try {
                            $file = $this->resourceProvider->getResource($file);
                        } catch (UnknownResourceException $exception) {
                            try {
                                $file = new File(FileUtils::realpath($resourcePath . '/' . $path));
                            } catch (RealPathException $exception) {
                                throw new WebException(sprintf('Stylesheet [%s] requested resource [%s] which is not available.', $source, $file), 0, $exception);
                            }
                        }
                        $assetFile = $this->assetStorage->store($file);
                        $current = str_replace($item, ($pathList[$path] = $assetFile->getRelativePath()), $current);
                    }
                    $content[] = $current;
                }
                $cache->save($cacheId, $file = $this->assetStorage->store($this->tempDirectory->save($resourceList->getResourceName() . '.css', implode("\n", $content))));
            }
            return $file;
        }
    }