<?php
/**
 * Common abstract for the common classes package (last modified: 2025.08.21).
 *
 * This file is a part of the "common classes package", utilised by a number of
 * packages and projects, including CIDRAM and phpMussel.
 * @link https://github.com/Maikuolan/Common
 *
 * License: GNU/GPLv2
 * @see LICENSE.txt
 *
 * "COMMON CLASSES PACKAGE" COPYRIGHT 2019 and beyond by Caleb Mazalevskis.
 */

namespace Maikuolan\Common;

abstract class CommonAbstract
{
    /**
     * @var string Common Classes Package tag/release version.
     * @link https://github.com/Maikuolan/Common/tags
     */
    public const VERSION = '2.14.2';

    /**
     * Traverse data path.
     *
     * @param mixed $Data The data to traverse.
     * @param string|array $Path The path to traverse.
     * @param bool $AllowNonScalar Whether to allow non-scalar returns.
     * @param bool $AllowMethodCalls Whether to allow method calls.
     * @return mixed The traversed data, or an empty string on failure.
     */
    public function dataTraverse(&$Data, $Path = [], bool $AllowNonScalar = false, bool $AllowMethodCalls = false)
    {
        if (!is_array($Path)) {
            $Path = preg_split('~(?<!\\\\)\\.~', $Path) ?: [];
        }
        $Segment = array_shift($Path);
        if ($Segment === null || strlen($Segment) === 0) {
            return $AllowNonScalar || is_scalar($Data) ? $Data : '';
        }
        $Segment = str_replace('\.', '.', $Segment);
        if (is_array($Data)) {
            if (preg_match('~^(?:keys|flip|pop|shift)\\(\\)$~i', $Segment)) {
                $Segment = 'array_' . substr($Segment, 0, -2);
                $Working = $Segment($Data);
                return $this->dataTraverse($Working, $Path, $AllowNonScalar, $AllowMethodCalls);
            }
            return isset($Data[$Segment]) ? $this->dataTraverse($Data[$Segment], $Path, $AllowNonScalar, $AllowMethodCalls) : '';
        }
        if (is_object($Data)) {
            if (property_exists($Data, $Segment)) {
                return $this->dataTraverse($Data->$Segment, $Path, $AllowNonScalar, $AllowMethodCalls);
            }
            if ($AllowMethodCalls && method_exists($Data, $Segment)) {
                $Working = $Data->{$Segment}(...$Path);
                return $this->dataTraverse($Working, [], $AllowNonScalar);
            }
        }
        if (is_string($Data)) {
            if (preg_match('~^(?:trim|str(?:tolower|toupper|len))\\(\\)$~i', $Segment)) {
                $Segment = substr($Segment, 0, -2);
                $Working = $Segment($Data);
                return $this->dataTraverse($Working, $Path, $AllowNonScalar, $AllowMethodCalls);
            }
        }
        return $this->dataTraverse($Data, $Path, $AllowNonScalar, $AllowMethodCalls);
    }

    /**
     * Used to redact sensitive properties from an object's dump.
     *
     * @return array An object's dumped properties.
     */
    public function __debugInfo(): array
    {
        $Properties = get_object_vars($this);

        /** Attributes available as of PHP >= 8. Properties returned as is for older PHP versions. */
        if (!class_exists('\ReflectionProperty') || !method_exists('\ReflectionProperty', 'getAttributes')) {
            return $Properties;
        }

        foreach ($Properties as $Property => &$Value) {
            $Reflection = new \ReflectionProperty($this, $Property);
            $Attributes = $Reflection->getAttributes();
            foreach ($Attributes as $Attribute) {
                $Name = $Attribute->getName();
                if ($Name === 'Maikuolan\Common\Context') {
                    $Arguments = $Attribute->getArguments();
                    if (!empty($Arguments['Sensitive'])) {
                        $Value = $Attribute->newInstance();
                    }
                }
            }
        }
        return $Properties;
    }
}
