<?php

/**
 * This file is part of the Nette Framework (https://nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */

declare(strict_types=1);

namespace Nette\Iterators;

use Nette;


/**
 * Smarter caching iterator.
 *
 * @property-read bool $first
 * @property-read bool $last
 * @property-read bool $empty
 * @property-read bool $odd
 * @property-read bool $even
 * @property-read int $counter
 * @property-read mixed $nextKey
 * @property-read mixed $nextValue
 */
class CachingIterator extends \CachingIterator implements \Countable
{
	use Nette\SmartObject;

	private int $counter = 0;


	public function __construct($iterator)
	{
		if (is_array($iterator) || $iterator instanceof \stdClass) {
			$iterator = new \ArrayIterator($iterator);

		} elseif ($iterator instanceof \IteratorAggregate) {
			do {
				$iterator = $iterator->getIterator();
			} while ($iterator instanceof \IteratorAggregate);

			assert($iterator instanceof \Iterator);

		} elseif ($iterator instanceof \Iterator) {
		} elseif ($iterator instanceof \Traversable) {
			$iterator = new \IteratorIterator($iterator);
		} else {
			throw new Nette\InvalidArgumentException(sprintf('Invalid argument passed to %s; array or Traversable expected, %s given.', self::class, get_debug_type($iterator)));
		}

		parent::__construct($iterator, 0);
	}


	/**
	 * Is the current element the first one?
	 */
	public function isFirst(?int $gridWidth = null): bool
	{
		return $this->counter === 1 || ($gridWidth && $this->counter !== 0 && (($this->counter - 1) % $gridWidth) === 0);
	}


	/**
	 * Is the current element the last one?
	 */
	public function isLast(?int $gridWidth = null): bool
	{
		return !$this->hasNext() || ($gridWidth && ($this->counter % $gridWidth) === 0);
	}


	/**
	 * Is the iterator empty?
	 */
	public function isEmpty(): bool
	{
		return $this->counter === 0;
	}


	/**
	 * Is the counter odd?
	 */
	public function isOdd(): bool
	{
		return $this->counter % 2 === 1;
	}


	/**
	 * Is the counter even?
	 */
	public function isEven(): bool
	{
		return $this->counter % 2 === 0;
	}


	/**
	 * Returns the counter.
	 */
	public function getCounter(): int
	{
		return $this->counter;
	}


	/**
	 * Returns the count of elements.
	 */
	public function count(): int
	{
		$inner = $this->getInnerIterator();
		if ($inner instanceof \Countable) {
			return $inner->count();

		} else {
			throw new Nette\NotSupportedException('Iterator is not countable.');
		}
	}


	/**
	 * Forwards to the next element.
	 */
	public function next(): void
	{
		parent::next();
		if (parent::valid()) {
			$this->counter++;
		}
	}


	/**
	 * Rewinds the Iterator.
	 */
	public function rewind(): void
	{
		parent::rewind();
		$this->counter = parent::valid() ? 1 : 0;
	}


	/**
	 * Returns the next key.
	 */
	public function getNextKey(): mixed
	{
		return $this->getInnerIterator()->key();
	}


	/**
	 * Returns the next element.
	 */
	public function getNextValue(): mixed
	{
		return $this->getInnerIterator()->current();
	}
}

• [F] CachingIterator.php
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• [F] Mapper.php
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                        Request Example (guzzle)
                        

                        
                            
<?php
                            
 require_once('vendor/autoload.php');
                            
 $client = new \GuzzleHttp\Client();
                            
 $response = $client->request('POST', $base_url. 'v1/generate-token', [
                            
'headers' => [
                            
  'accept' => 'application/json',
                            
  'content-type' => 'application/json',
                            
 ],
                            
'form_params' => [
                            
  'client_id'     => '$client_id',
                            
  'secret_id'     => 'secret_id',
                            
  'env'           => 'env',
                            
  'merchant_id'   => 'merchant_id',
                            
 ],
                            
                            
]);
                            
echo $response->getBody();
                        
                    
                

                    
                        
**Response: SUCCESS (200 OK)**
                        
{
                        
 "message": {
                        
 "success": [
                        
  "Successfully token is generated"
                        
 ]
                        
},
                        
"data": {
                        
 "token":"eyJpdiI6InpkczhjTjhQdVhUL2lKQ0pSUUx6aUE9P
SIsInZhbHVlIjoiVGVBTVBDTXltbjNZcEIvdEJveGpTSno3TU5NRUtn
VkhCZ1pHTFNCUnZGQ2UxMnYxN202cEE1YVRDTEFsc0ZERExoTjdtL0dTL2x
oU3QzeUJJOExiMUx5T0w1L0llUXhTUkU1cWVLWEdEbEplb0dKNXcwbTNRM0
VxdkUwYzZuNFdtNkhMQ0pRZysyNWkvdzBxSlBoSVBSOGFTekNnR2RXNHVtc
G9lMGZOTmNCcm1hR3c5Sk9KTnB4Y3ltZDl6cm90MThrR21Ca3B1azc3bXRi
Q0J6SW96UVo1elNkU1ZqeE05bTcwWGp1MEUxWlJFdnNWTmpSbnVpeW92b2U
4dXZkUGgyb1VmK0luaGdyaFlsVTZlcVpVRnZlTG1DeFF6Ykk2T2h6Z3Jzbn
IyNHpNdHowSE5JdDR0Y0pZT20zUm1XYW8iLCJtYWMiOiJlY2M4NGE1OGUzYz
kzYzk0YzljNmVmNjE0YWI0ZDIwOGI3NDQ2YWEyY2ZhNzc0NzE4ZmY1ZmYyMz

                        IyZmQzNDY1IiwidGFnIjoiIn0=",
                        
},
                        
"type": "success"
                        
}
                    
                

                    
                        
**Response: ERROR (400 FAILED)**
                        
{
                        
 "message": {
                        
 "error": [
                        
  "Invalid credentials."
                        
 ]
                        
},
                        
"data": null,
                        
"type": "error"
                        
}