2021_08_25_133613_add_style_manager.php

<?php

declare(strict_types=1);

use App\Models\Style;
use Illuminate\Support\Str;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Finder\SplFileInfo;

/**
 * Class AddStyleManager
 */
class AddStyleManager extends \App\Upgrade
{
    /**
     * In production, the database is backed up before upgrades are run. Since
     * the sent emails tables are huge, we speed up the backup process by
     * excluding those tables from the backup by default. If this upgrade is
     * making changes to the sent emails tables, you may choose to backup
     * those tables.
     *
     * @var boolean
     */
    protected $backupSentEmails = false;

    /**
     * Run the upgrade
     */
    public function run()
    {
        $this->migrateStylesIn(resource_path('assets/sass/custom'));
    }

    /**
     * Migrate all styles in a give directory.
     * @param string $directory
     */
    private function migrateStylesIn(string $directory): void
    {
        $sassFiles = (new Finder)->in($directory)->files()->filter($this->onlySassFiles());

        foreach ($sassFiles as $sassFile) {
            $name = $this->resolveStyleName($sassFile, $directory);

            $this->migrateStyleToDatabase($name, $sassFile->getPathname());
        }
    }

    private function migrateStyleToDatabase(string $name, string $pathName)
    {
        Style::firstOrCreate(
            [
                'name' => $name,
            ],
            [
                'css'         => $this->replaceImportPaths(file_get_contents($pathName)),
                'is_variable' => $this->checkVariableStyle($name)
            ]
        );
    }

    /**
     * @param $sassFile
     * @param string $sassDirectory
     * @return string
     */
    private function resolveStyleName($sassFile, string $sassDirectory): string
    {
        $prefix = $this->toStylePrefix(Str::after($sassFile->getPath(), $sassDirectory));
        $fileName = $this->toStyleName($sassFile->getFilenameWithoutExtension());

        return empty($prefix) ? $fileName : $prefix . $this->styleDelimiter() . $fileName;
    }

    /**
     * Filter to get SASS files only.
     * @return \Closure
     */
    private function onlySassFiles(): \Closure
    {
        return function (SplFileInfo $file) {
            return \preg_match('/\.(scss)$/', $file->getPathname());
        };
    }

    private function checkVariableStyle(string $name): bool
    {
        return Str::endsWith($name, ['Variable', 'Variables']);
    }

    /**
     * Remove import statement in style file.
     * @param string $css
     * @return string
     */
    private function replaceImportPaths(string $css): string
    {
        foreach (getStringBetween($css, '@import', ';') as $name) {
            $css = str_replace($name, $this->resolveStyleNameFromImport($name), $css);
        }

        return $css;
    }

    private function resolveStyleNameFromImport(string $value): string
    {
        $value = str_replace('.', '', $value);
        $value = str_replace('"/', '"', $value);
        $value = str_replace('/_', $this->styleDelimiter(), $value);

        return $this->toStyleName($value);
    }

    /**
     * @param string $value
     * @return string
     */
    private function toStyleName(string $value): string
    {
        return trim(Str::title(str_replace('_', ' ', $value)));
    }

    /**
     * @param string $value
     * @return string
     */
    private function toStylePrefix(string $value): string
    {
        return str_replace('/', $this->styleDelimiter(), $this->toStyleName(ltrim($value, '/')));
    }

    private function styleDelimiter(): string
    {
        return ' - ';
    }
}