<?php
/**
 * @package     Plumrocket_GlobalPrivacyControl
 * @copyright   Copyright (c) 2025 Plumrocket Inc.
 * @license     https://plumrocket.com/license   End-user License Agreement
 */

declare(strict_types=1);

namespace Plumrocket\GlobalPrivacyControl\Service;

use Magento\Framework\App\DeploymentConfig;
use Magento\Framework\App\Filesystem\DirectoryList as DirectoryListApi;
use Magento\Framework\Config\ConfigOptionsListConstants;
use Magento\Framework\Exception\LocalizedException;
use Magento\Framework\Filesystem\DirectoryList;
use Magento\Framework\Filesystem\Driver\File as FileDriver;
use Plumrocket\GlobalPrivacyControl\Helper\Config;

class WellKnownFileManager
{
    private const FILE_NAME = 'gpc.json';

    /**
     * @var \Magento\Framework\App\DeploymentConfig
     */
    private $deploymentConfig;

    /**
     * @var \Magento\Framework\Filesystem\DirectoryList
     */
    private $directoryList;

    /**
     * @var \Magento\Framework\Filesystem\Driver\File
     */
    private $fileDriver;

    /**
     * @var \Plumrocket\GlobalPrivacyControl\Helper\Config
     */
    private $config;

    /**
     * @param \Magento\Framework\App\DeploymentConfig     $deploymentConfig
     * @param \Magento\Framework\Filesystem\DirectoryList $directoryList
     * @param \Magento\Framework\Filesystem\Driver\File   $fileDriver
     * @param \Plumrocket\GlobalPrivacyControl\Helper\Config               $config
     */
    public function __construct(
        DeploymentConfig $deploymentConfig,
        DirectoryList $directoryList,
        FileDriver $fileDriver,
        Config $config
    ) {
        $this->deploymentConfig = $deploymentConfig;
        $this->directoryList = $directoryList;
        $this->fileDriver = $fileDriver;
        $this->config = $config;
    }

    /**
     * @return void
     * @throws \Magento\Framework\Exception\FileSystemException
     * @throws \Magento\Framework\Exception\RuntimeException
     */
    public function create(): void
    {
        $filePath = $this->getFilePath();
        $directoryPath = dirname($filePath);

        if (! $this->fileDriver->isExists($directoryPath)) {
            $this->fileDriver->createDirectory($directoryPath);
        }

        $jsonData = json_encode(
            [
                'gpc' => $this->config->isModuleEnabled(),
                'version' => '1.0',
                'created' => $this->config->getWellKnownLastUpdateDate()
            ],
            JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES
        );

        $this->fileDriver->filePutContents($filePath, $jsonData);
    }

    /**
     * @return string
     * @throws \Magento\Framework\Exception\FileSystemException
     * @throws \Magento\Framework\Exception\RuntimeException
     */
    public function getContent(): string
    {
        $filePath = $this->getFilePath();
        if (! $this->fileDriver->isExists($filePath)) {
            throw new LocalizedException(
                __("The .well-known file was not found.")
            );
        }

        return $this->fileDriver->fileGetContents($filePath);
    }

    /**
     * @return string
     * @throws \Magento\Framework\Exception\FileSystemException
     * @throws \Magento\Framework\Exception\RuntimeException
     */
    private function getFilePath(): string
    {
        $rootPath = $this->deploymentConfig->get(ConfigOptionsListConstants::CONFIG_PATH_DOCUMENT_ROOT_IS_PUB)
            ? $this->directoryList->getPath(DirectoryListApi::PUB)
            : $this->directoryList->getRoot();

        return $rootPath . DIRECTORY_SEPARATOR . '.well-known' . DIRECTORY_SEPARATOR . self::FILE_NAME;
    }
}