/home/kueuepay/public_html/vendor/symfony/http-foundation/HeaderBag.php
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpFoundation;

/**
 * HeaderBag is a container for HTTP headers.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @implements \IteratorAggregate<string, list<string|null>>
 */
class HeaderBag implements \IteratorAggregate, \Countable
{
    protected const UPPER = '_ABCDEFGHIJKLMNOPQRSTUVWXYZ';
    protected const LOWER = '-abcdefghijklmnopqrstuvwxyz';

    /**
     * @var array<string, list<string|null>>
     */
    protected $headers = [];
    protected $cacheControl = [];

    public function __construct(array $headers = [])
    {
        foreach ($headers as $key => $values) {
            $this->set($key, $values);
        }
    }

    /**
     * Returns the headers as a string.
     */
    public function __toString(): string
    {
        if (!$headers = $this->all()) {
            return '';
        }

        ksort($headers);
        $max = max(array_map('strlen', array_keys($headers))) + 1;
        $content = '';
        foreach ($headers as $name => $values) {
            $name = ucwords($name, '-');
            foreach ($values as $value) {
                $content .= sprintf("%-{$max}s %s\r\n", $name.':', $value);
            }
        }

        return $content;
    }

    /**
     * Returns the headers.
     *
     * @param string|null $key The name of the headers to return or null to get them all
     *
     * @return array<string, array<int, string|null>>|array<int, string|null>
     */
    public function all(string $key = null): array
    {
        if (null !== $key) {
            return $this->headers[strtr($key, self::UPPER, self::LOWER)] ?? [];
        }

        return $this->headers;
    }

    /**
     * Returns the parameter keys.
     *
     * @return string[]
     */
    public function keys(): array
    {
        return array_keys($this->all());
    }

    /**
     * Replaces the current HTTP headers by a new set.
     */
    public function replace(array $headers = [])
    {
        $this->headers = [];
        $this->add($headers);
    }

    /**
     * Adds new headers the current HTTP headers set.
     */
    public function add(array $headers)
    {
        foreach ($headers as $key => $values) {
            $this->set($key, $values);
        }
    }

    /**
     * Returns the first header by name or the default one.
     */
    public function get(string $key, string $default = null): ?string
    {
        $headers = $this->all($key);

        if (!$headers) {
            return $default;
        }

        if (null === $headers[0]) {
            return null;
        }

        return (string) $headers[0];
    }

    /**
     * Sets a header by name.
     *
     * @param string|string[]|null $values  The value or an array of values
     * @param bool                 $replace Whether to replace the actual value or not (true by default)
     */
    public function set(string $key, string|array|null $values, bool $replace = true)
    {
        $key = strtr($key, self::UPPER, self::LOWER);

        if (\is_array($values)) {
            $values = array_values($values);

            if (true === $replace || !isset($this->headers[$key])) {
                $this->headers[$key] = $values;
            } else {
                $this->headers[$key] = array_merge($this->headers[$key], $values);
            }
        } else {
            if (true === $replace || !isset($this->headers[$key])) {
                $this->headers[$key] = [$values];
            } else {
                $this->headers[$key][] = $values;
            }
        }

        if ('cache-control' === $key) {
            $this->cacheControl = $this->parseCacheControl(implode(', ', $this->headers[$key]));
        }
    }

    /**
     * Returns true if the HTTP header is defined.
     */
    public function has(string $key): bool
    {
        return \array_key_exists(strtr($key, self::UPPER, self::LOWER), $this->all());
    }

    /**
     * Returns true if the given HTTP header contains the given value.
     */
    public function contains(string $key, string $value): bool
    {
        return \in_array($value, $this->all($key));
    }

    /**
     * Removes a header.
     */
    public function remove(string $key)
    {
        $key = strtr($key, self::UPPER, self::LOWER);

        unset($this->headers[$key]);

        if ('cache-control' === $key) {
            $this->cacheControl = [];
        }
    }

    /**
     * Returns the HTTP header value converted to a date.
     *
     * @throws \RuntimeException When the HTTP header is not parseable
     */
    public function getDate(string $key, \DateTime $default = null): ?\DateTimeInterface
    {
        if (null === $value = $this->get($key)) {
            return $default;
        }

        if (false === $date = \DateTime::createFromFormat(\DATE_RFC2822, $value)) {
            throw new \RuntimeException(sprintf('The "%s" HTTP header is not parseable (%s).', $key, $value));
        }

        return $date;
    }

    /**
     * Adds a custom Cache-Control directive.
     */
    public function addCacheControlDirective(string $key, bool|string $value = true)
    {
        $this->cacheControl[$key] = $value;

        $this->set('Cache-Control', $this->getCacheControlHeader());
    }

    /**
     * Returns true if the Cache-Control directive is defined.
     */
    public function hasCacheControlDirective(string $key): bool
    {
        return \array_key_exists($key, $this->cacheControl);
    }

    /**
     * Returns a Cache-Control directive value by name.
     */
    public function getCacheControlDirective(string $key): bool|string|null
    {
        return $this->cacheControl[$key] ?? null;
    }

    /**
     * Removes a Cache-Control directive.
     */
    public function removeCacheControlDirective(string $key)
    {
        unset($this->cacheControl[$key]);

        $this->set('Cache-Control', $this->getCacheControlHeader());
    }

    /**
     * Returns an iterator for headers.
     *
     * @return \ArrayIterator<string, list<string|null>>
     */
    public function getIterator(): \ArrayIterator
    {
        return new \ArrayIterator($this->headers);
    }

    /**
     * Returns the number of headers.
     */
    public function count(): int
    {
        return \count($this->headers);
    }

    protected function getCacheControlHeader()
    {
        ksort($this->cacheControl);

        return HeaderUtils::toString($this->cacheControl, ',');
    }

    /**
     * Parses a Cache-Control HTTP header.
     */
    protected function parseCacheControl(string $header): array
    {
        $parts = HeaderUtils::split($header, ',=');

        return HeaderUtils::combine($parts);
    }
}
Developer

Kueue Pay Payment Gateway Solutions Developer API Documentation

Welcome to the Kueue Pay Payment Gateway Solutions Developer API Documentation. This comprehensive guide will empower you to seamlessly integrate our advanced payment gateway into your website, enhancing your customers’ payment experience and enabling efficient transaction processing. The Kueue Pay Developer API is designed for developers and entrepreneurs who seek simplicity, security, and reliability in their payment processing solutions.

1. Introduction

The Kueue Pay Developer API allows you to seamlessly integrate Kueue Pay’s Payment Gateway Solutions into your website, enabling secure and efficient debit and credit card transactions. With our API, you can initiate payments, check payment statuses, and even process refunds, all while ensuring a smooth and streamlined payment experience for your customers.