<?php

declare(strict_types=1);

/*
 * This file is part of TYPO3 CMS-based extension "ew-base" by evoWeb.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 */

namespace Evoweb\EwBase\Configuration;

use TYPO3\CMS\Core\Core\Environment;

class AdditionalConfiguration
{
    protected string $extensionKey = 'ew_base';

    protected array $developConfig = [
        'BE' => [
            'debug' => true,
            'loginRateLimit' => 10000,
        ],
        'FE' => [
            'debug' => true,
            'loginRateLimit' => 10000,
        ],
        'GFX' => [
            'processor' => 'GraphicsMagick',
            'processor_colorspace' => 'RGB',
            'processor_path' => '/usr/bin/',
            'processor_path_lzw' => '/usr/bin/',
        ],
        'SYS' => [
            'devIPmask' => '*',
            'displayErrors' => 1,
            'systemLogLevel' => 0,
            'exceptionalErrors' => 12290,
            'errorHandlerErrors' => 0,
        ],
    ];

    /**
     * This is needed to override all mail settings instead of merging them.
     *
     * @var array<string, string>
     */
    protected array $mailConfig = [
        'transport' => 'smtp',
        'transport_smtp_server' => 'mailpit:1025'
    ];

    public function __construct()
    {
        if (PHP_VERSION_ID >= 80400) {
            $this->developConfig['SYS']['errorHandlerErrors'] = E_ALL & ~(
                    \E_NOTICE | \E_WARNING | \E_COMPILE_WARNING | \E_COMPILE_ERROR
                    | \E_CORE_WARNING | \E_CORE_ERROR | \E_PARSE | \E_ERROR
                );
        } else {
            $this->developConfig['SYS']['errorHandlerErrors'] = \E_ALL & ~(
                    \E_STRICT | \E_NOTICE | \E_WARNING | \E_COMPILE_WARNING | \E_COMPILE_ERROR
                    | \E_CORE_WARNING | \E_CORE_ERROR | \E_PARSE | \E_ERROR
                );
        }
    }

    public function initialize(array $configuration = []): void
    {
        $this->addContextToSitename();
        $this->addContextConfiguration($configuration);
        if (Environment::getContext() == 'Development') {
            $this->addDebugConfiguration();
        }
        $this->addFurtherConfigurationFiles();
    }

    protected function addContextToSitename(): void
    {
        $GLOBALS['TYPO3_CONF_VARS']['SYS']['sitename'] .= ' - ' . Environment::getContext();
    }

    protected function addDebugConfiguration(): void
    {
        $GLOBALS['TYPO3_CONF_VARS'] = $this->arrayMergeRecursive(
            $GLOBALS['TYPO3_CONF_VARS'],
            $this->developConfig
        );
        $layoutRootPaths = $GLOBALS['TYPO3_CONF_VARS']['MAIL']['layoutRootPaths'] ?: [];
        $partialRootPaths = $GLOBALS['TYPO3_CONF_VARS']['MAIL']['partialRootPaths'] ?: [];
        $templateRootPaths = $GLOBALS['TYPO3_CONF_VARS']['MAIL']['templateRootPaths'] ?: [];

        $GLOBALS['TYPO3_CONF_VARS']['MAIL'] = $this->mailConfig;

        if (!empty($layoutRootPaths)) {
            $GLOBALS['TYPO3_CONF_VARS']['MAIL']['layoutRootPaths'] = $layoutRootPaths;
        }
        if (!empty($partialRootPaths)) {
            $GLOBALS['TYPO3_CONF_VARS']['MAIL']['partialRootPaths'] = $partialRootPaths;
        }
        if (!empty($templateRootPaths)) {
            $GLOBALS['TYPO3_CONF_VARS']['MAIL']['templateRootPaths'] = $templateRootPaths;
        }
    }

    protected function addContextConfiguration(array $configuration): void
    {
        $context = (string)Environment::getContext();
        if (isset($configuration[$context]) && is_array($configuration[$context])) {
            $GLOBALS['TYPO3_CONF_VARS'] = $this->arrayMergeRecursive(
                $GLOBALS['TYPO3_CONF_VARS'],
                $configuration[$context]
            );
        }
    }

    /**
     * Loads additional configuration two levels up relative to instance
     * or relative to ADDITIONAL_CONFIG_FILE configuration
     */
    protected function addFurtherConfigurationFiles(): void
    {
        $paths = [
            Environment::getPublicPath() . '/../../../AdditionalConfiguration.php',
            Environment::getPublicPath() . '/' . ($_SERVER['ADDITIONAL_CONFIG_FILE'] ?? time() . '.php'),
        ];
        foreach ($paths as $path) {
            $path = realpath($path);
            if ($path && @file_exists($path)) {
                /** @noinspection */
                require_once $path;
            }
        }
    }

    protected function arrayMergeRecursive(array $array1, array $array2): array
    {
        $merged = $array1;

        foreach ($array2 as $key => $value) {
            if (is_array($value) && isset($merged[$key]) && is_array($merged[$key])) {
                $merged[$key] = $this->arrayMergeRecursive($merged[$key], $value);
            } elseif (is_numeric($key)) {
                if (!in_array($value, $merged)) {
                    $merged[] = $value;
                }
            } else {
                $merged[$key] = $value;
            }
        }

        return $merged;
    }
}