<?php

namespace DeepCopy;

use ArrayObject;
use DateInterval;
use DateTimeInterface;
use DateTimeZone;
use DeepCopy\Exception\CloneException;
use DeepCopy\Filter\ChainableFilter;
use DeepCopy\Filter\Filter;
use DeepCopy\Matcher\Matcher;
use DeepCopy\Reflection\ReflectionHelper;
use DeepCopy\TypeFilter\Date\DateIntervalFilter;
use DeepCopy\TypeFilter\Spl\ArrayObjectFilter;
use DeepCopy\TypeFilter\Spl\SplDoublyLinkedListFilter;
use DeepCopy\TypeFilter\TypeFilter;
use DeepCopy\TypeMatcher\TypeMatcher;
use ReflectionObject;
use ReflectionProperty;
use SplDoublyLinkedList;

/**
 * @final
 */
class DeepCopy
{
    /**
     * @var object[] List of objects copied.
     */
    private $hashMap = [];

    /**
     * Filters to apply.
     *
     * @var array Array of ['filter' => Filter, 'matcher' => Matcher] pairs.
     */
    private $filters = [];

    /**
     * Type Filters to apply.
     *
     * @var array Array of ['filter' => Filter, 'matcher' => Matcher] pairs.
     */
    private $typeFilters = [];

    /**
     * @var bool
     */
    private $skipUncloneable = false;

    /**
     * @var bool
     */
    private $useCloneMethod;

    /**
     * @param bool $useCloneMethod   If set to true, when an object implements the __clone() function, it will be used
     *                               instead of the regular deep cloning.
     */
    public function __construct($useCloneMethod = false)
    {
        $this->useCloneMethod = $useCloneMethod;

        $this->addTypeFilter(new ArrayObjectFilter($this), new TypeMatcher(ArrayObject::class));
        $this->addTypeFilter(new DateIntervalFilter(), new TypeMatcher(DateInterval::class));
        $this->addTypeFilter(new SplDoublyLinkedListFilter($this), new TypeMatcher(SplDoublyLinkedList::class));
    }

    /**
     * If enabled, will not throw an exception when coming across an uncloneable property.
     *
     * @param $skipUncloneable
     *
     * @return $this
     */
    public function skipUncloneable($skipUncloneable = true)
    {
        $this->skipUncloneable = $skipUncloneable;

        return $this;
    }

    /**
     * Deep copies the given object.
     *
     * @param mixed $object
     *
     * @return mixed
     */
    public function copy($object)
    {
        $this->hashMap = [];

        return $this->recursiveCopy($object);
    }

    public function addFilter(Filter $filter, Matcher $matcher)
    {
        $this->filters[] = [
            'matcher' => $matcher,
            'filter'  => $filter,
        ];
    }

    public function prependFilter(Filter $filter, Matcher $matcher)
    {
        array_unshift($this->filters, [
            'matcher' => $matcher,
            'filter'  => $filter,
        ]);
    }

    public function addTypeFilter(TypeFilter $filter, TypeMatcher $matcher)
    {
        $this->typeFilters[] = [
            'matcher' => $matcher,
            'filter'  => $filter,
        ];
    }

    private function recursiveCopy($var)
    {
        // Matches Type Filter
        if ($filter = $this->getFirstMatchedTypeFilter($this->typeFilters, $var)) {
            return $filter->apply($var);
        }

        // Resource
        if (is_resource($var)) {
            return $var;
        }

        // Array
        if (is_array($var)) {
            return $this->copyArray($var);
        }

        // Scalar
        if (! is_object($var)) {
            return $var;
        }

        // Enum
        if (PHP_VERSION_ID >= 80100 && enum_exists(get_class($var))) {
            return $var;
        }

        // Object
        return $this->copyObject($var);
    }

    /**
     * Copy an array
     * @param array $array
     * @return array
     */
    private function copyArray(array $array)
    {
        foreach ($array as $key => $value) {
            $array[$key] = $this->recursiveCopy($value);
        }

        return $array;
    }

    /**
     * Copies an object.
     *
     * @param object $object
     *
     * @throws CloneException
     *
     * @return object
     */
    private function copyObject($object)
    {
        $objectHash = spl_object_hash($object);

        if (isset($this->hashMap[$objectHash])) {
            return $this->hashMap[$objectHash];
        }

        $reflectedObject = new ReflectionObject($object);
        $isCloneable = $reflectedObject->isCloneable();

        if (false === $isCloneable) {
            if ($this->skipUncloneable) {
                $this->hashMap[$objectHash] = $object;

                return $object;
            }

            throw new CloneException(
                sprintf(
                    'The class "%s" is not cloneable.',
                    $reflectedObject->getName()
                )
            );
        }

        $newObject = clone $object;
        $this->hashMap[$objectHash] = $newObject;

        if ($this->useCloneMethod && $reflectedObject->hasMethod('__clone')) {
            return $newObject;
        }

        if ($newObject instanceof DateTimeInterface || $newObject instanceof DateTimeZone) {
            return $newObject;
        }

        foreach (ReflectionHelper::getProperties($reflectedObject) as $property) {
            $this->copyObjectProperty($newObject, $property);
        }

        return $newObject;
    }

    private function copyObjectProperty($object, ReflectionProperty $property)
    {
        // Ignore static properties
        if ($property->isStatic()) {
            return;
        }

        // Apply the filters
        foreach ($this->filters as $item) {
            /** @var Matcher $matcher */
            $matcher = $item['matcher'];
            /** @var Filter $filter */
            $filter = $item['filter'];

            if ($matcher->matches($object, $property->getName())) {
                $filter->apply(
                    $object,
                    $property->getName(),
                    function ($object) {
                        return $this->recursiveCopy($object);
                    }
                );

                if ($filter instanceof ChainableFilter) {
                    continue;
                }

                // If a filter matches, we stop processing this property
                return;
            }
        }

        $property->setAccessible(true);

        // Ignore uninitialized properties (for PHP >7.4)
        if (method_exists($property, 'isInitialized') && !$property->isInitialized($object)) {
            return;
        }

        $propertyValue = $property->getValue($object);

        // Copy the property
        $property->setValue($object, $this->recursiveCopy($propertyValue));
    }

    /**
     * Returns first filter that matches variable, `null` if no such filter found.
     *
     * @param array $filterRecords Associative array with 2 members: 'filter' with value of type {@see TypeFilter} and
     *                             'matcher' with value of type {@see TypeMatcher}
     * @param mixed $var
     *
     * @return TypeFilter|null
     */
    private function getFirstMatchedTypeFilter(array $filterRecords, $var)
    {
        $matched = $this->first(
            $filterRecords,
            function (array $record) use ($var) {
                /* @var TypeMatcher $matcher */
                $matcher = $record['matcher'];

                return $matcher->matches($var);
            }
        );

        return isset($matched) ? $matched['filter'] : null;
    }

    /**
     * Returns first element that matches predicate, `null` if no such element found.
     *
     * @param array    $elements Array of ['filter' => Filter, 'matcher' => Matcher] pairs.
     * @param callable $predicate Predicate arguments are: element.
     *
     * @return array|null Associative array with 2 members: 'filter' with value of type {@see TypeFilter} and 'matcher'
     *                    with value of type {@see TypeMatcher} or `null`.
     */
    private function first(array $elements, callable $predicate)
    {
        foreach ($elements as $element) {
            if (call_user_func($predicate, $element)) {
                return $element;
            }
        }

        return null;
    }
}

• [D] Exception
• [D] Filter
• [D] Matcher
• [D] Reflection
• [D] TypeFilter
• [D] TypeMatcher
• [F] deep_copy.php
  Delete
• [F] DeepCopy.php
  Delete

About Section

About NFC Pay: Our Story and Mission

NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.

• Simplifying Payments, One Tap at a Time.
• Reinventing Your Wallet for Modern Convenience.
• Smart Payments for a Effortless Lifestyle.
• Experience the Ease of Tap and Pay.
• Innovative Solutions for Your Daily Transactions.

FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

How do I register for NFC Pay?

Download the app and sign up using your email or phone number, then complete the verification process.

Is my payment information secure?

Yes, we use advanced encryption and security protocols to protect your payment details.

Can I add multiple cards to my NFC Pay wallet?

Absolutely, you can link multiple debit or credit cards to your wallet.

How do I transfer money to another user?

Go to the transfer section, select the recipient, enter the amount, and authorize the transfer.

What should I do if I forget my PIN?

Use the “Forgot PIN” feature in the app to reset it following the provided instructions.

How can I activate my merchant account?

Sign up for a merchant account through the app and follow the setup instructions to start accepting payments.

Can I track my payment status?

Yes, you can view and track your payment status in the account dashboard