<?php

namespace OCA\SideMenu\Util;

use OC_Util;
use OCA\SideMenu\AppInfo\Application;

/**
 * class AssetUtil.
 *
 * @author Simon Vieille <simon@deblan.fr>
 */
class AssetUtil
{
    protected array $entrypoints;
    protected static ?AssetUtil $instance = null;

    public function __construct()
    {
        $this->entrypoints = json_decode(
            file_get_contents(__DIR__.'/../../assets/entrypoints.json'),
            true
        )['entrypoints'];
    }

    public static function getInstance(): self
    {
        if (null === self::$instance) {
            self::$instance = new self();
        }

        return self::$instance;
    }

    public function addEntrypointAsset($entry, $type, $key): self
    {
        $file = basename($this->entrypoints[$entry][$type][$key]);
        $path = $this->generatePath('assets', $file);

        return $this->addAsset($type, $path);
    }

    public function addAsset($type, $path): self
    {
        $path = preg_replace('/\.(css|js)$/', '', $path);

        if ('css' === $type) {
            OC_Util::$styles[] = $path;
        } elseif ('js' === $type) {
            OC_Util::$scripts[] = $path;
        }

        return $this;
    }

    public function generatePath($directory, $file): string
    {
        return implode('/', [
            Application::APP_ID,
            $directory,
            $file,
        ]);
    }
}