<?php
declare(strict_types=1);

namespace Esun\FileManager\Model;

use Esun\FileManager\Model\Security\FilePolicy;
use Magento\Framework\App\Config\ScopeConfigInterface;
use Magento\Store\Model\ScopeInterface;

class Config
{
    private const XML_PATH_ENABLED = 'filemanager/general/enabled';
    private const XML_PATH_ALLOWED_EXTENSIONS = 'filemanager/general/allowed_extensions';
    private const XML_PATH_MAX_FILE_SIZE = 'filemanager/general/max_file_size';
    private const XML_PATH_UPLOAD_PATH = 'filemanager/general/upload_path';

    public function __construct(private readonly ScopeConfigInterface $scopeConfig)
    {
    }

    public function isEnabled(): bool
    {
        return $this->scopeConfig->isSetFlag(self::XML_PATH_ENABLED, ScopeInterface::SCOPE_STORE);
    }

    /**
     * @return string[]
     */
    public function getAllowedExtensions(): array
    {
        $value = strtolower((string) $this->scopeConfig->getValue(self::XML_PATH_ALLOWED_EXTENSIONS));
        $extensions = preg_split('/[\s,]+/', $value, -1, PREG_SPLIT_NO_EMPTY) ?: [];

        return array_values(array_intersect(
            array_unique($extensions),
            FilePolicy::getSupportedExtensions()
        ));
    }

    public function getMaximumFileSizeBytes(): int
    {
        $megabytes = (float) $this->scopeConfig->getValue(self::XML_PATH_MAX_FILE_SIZE);

        return (int) round($megabytes * 1024 * 1024);
    }

    public function getUploadPath(): string
    {
        return trim((string) $this->scopeConfig->getValue(self::XML_PATH_UPLOAD_PATH), '/');
    }
}