<?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;

/**
 * ResponseHeaderBag is a container for Response HTTP headers.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ResponseHeaderBag extends HeaderBag
{
    public const COOKIES_FLAT = 'flat';
    public const COOKIES_ARRAY = 'array';

    public const DISPOSITION_ATTACHMENT = 'attachment';
    public const DISPOSITION_INLINE = 'inline';

    protected $computedCacheControl = [];
    protected $cookies = [];
    protected $headerNames = [];

    public function __construct(array $headers = [])
    {
        parent::__construct($headers);

        if (!isset($this->headers['cache-control'])) {
            $this->set('Cache-Control', '');
        }

        /* RFC2616 - 14.18 says all Responses need to have a Date */
        if (!isset($this->headers['date'])) {
            $this->initDate();
        }
    }

    /**
     * Returns the headers, with original capitalizations.
     */
    public function allPreserveCase(): array
    {
        $headers = [];
        foreach ($this->all() as $name => $value) {
            $headers[$this->headerNames[$name] ?? $name] = $value;
        }

        return $headers;
    }

    public function allPreserveCaseWithoutCookies()
    {
        $headers = $this->allPreserveCase();
        if (isset($this->headerNames['set-cookie'])) {
            unset($headers[$this->headerNames['set-cookie']]);
        }

        return $headers;
    }

    /**
     * {@inheritdoc}
     */
    public function replace(array $headers = [])
    {
        $this->headerNames = [];

        parent::replace($headers);

        if (!isset($this->headers['cache-control'])) {
            $this->set('Cache-Control', '');
        }

        if (!isset($this->headers['date'])) {
            $this->initDate();
        }
    }

    /**
     * {@inheritdoc}
     */
    public function all(string $key = null): array
    {
        $headers = parent::all();

        if (null !== $key) {
            $key = strtr($key, self::UPPER, self::LOWER);

            return 'set-cookie' !== $key ? $headers[$key] ?? [] : array_map('strval', $this->getCookies());
        }

        foreach ($this->getCookies() as $cookie) {
            $headers['set-cookie'][] = (string) $cookie;
        }

        return $headers;
    }

    /**
     * {@inheritdoc}
     */
    public function set(string $key, string|array|null $values, bool $replace = true)
    {
        $uniqueKey = strtr($key, self::UPPER, self::LOWER);

        if ('set-cookie' === $uniqueKey) {
            if ($replace) {
                $this->cookies = [];
            }
            foreach ((array) $values as $cookie) {
                $this->setCookie(Cookie::fromString($cookie));
            }
            $this->headerNames[$uniqueKey] = $key;

            return;
        }

        $this->headerNames[$uniqueKey] = $key;

        parent::set($key, $values, $replace);

        // ensure the cache-control header has sensible defaults
        if (\in_array($uniqueKey, ['cache-control', 'etag', 'last-modified', 'expires'], true) && '' !== $computed = $this->computeCacheControlValue()) {
            $this->headers['cache-control'] = [$computed];
            $this->headerNames['cache-control'] = 'Cache-Control';
            $this->computedCacheControl = $this->parseCacheControl($computed);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function remove(string $key)
    {
        $uniqueKey = strtr($key, self::UPPER, self::LOWER);
        unset($this->headerNames[$uniqueKey]);

        if ('set-cookie' === $uniqueKey) {
            $this->cookies = [];

            return;
        }

        parent::remove($key);

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

        if ('date' === $uniqueKey) {
            $this->initDate();
        }
    }

    /**
     * {@inheritdoc}
     */
    public function hasCacheControlDirective(string $key): bool
    {
        return \array_key_exists($key, $this->computedCacheControl);
    }

    /**
     * {@inheritdoc}
     */
    public function getCacheControlDirective(string $key): bool|string|null
    {
        return $this->computedCacheControl[$key] ?? null;
    }

    public function setCookie(Cookie $cookie)
    {
        $this->cookies[$cookie->getDomain()][$cookie->getPath()][$cookie->getName()] = $cookie;
        $this->headerNames['set-cookie'] = 'Set-Cookie';
    }

    /**
     * Removes a cookie from the array, but does not unset it in the browser.
     */
    public function removeCookie(string $name, ?string $path = '/', string $domain = null)
    {
        if (null === $path) {
            $path = '/';
        }

        unset($this->cookies[$domain][$path][$name]);

        if (empty($this->cookies[$domain][$path])) {
            unset($this->cookies[$domain][$path]);

            if (empty($this->cookies[$domain])) {
                unset($this->cookies[$domain]);
            }
        }

        if (empty($this->cookies)) {
            unset($this->headerNames['set-cookie']);
        }
    }

    /**
     * Returns an array with all cookies.
     *
     * @return Cookie[]
     *
     * @throws \InvalidArgumentException When the $format is invalid
     */
    public function getCookies(string $format = self::COOKIES_FLAT): array
    {
        if (!\in_array($format, [self::COOKIES_FLAT, self::COOKIES_ARRAY])) {
            throw new \InvalidArgumentException(sprintf('Format "%s" invalid (%s).', $format, implode(', ', [self::COOKIES_FLAT, self::COOKIES_ARRAY])));
        }

        if (self::COOKIES_ARRAY === $format) {
            return $this->cookies;
        }

        $flattenedCookies = [];
        foreach ($this->cookies as $path) {
            foreach ($path as $cookies) {
                foreach ($cookies as $cookie) {
                    $flattenedCookies[] = $cookie;
                }
            }
        }

        return $flattenedCookies;
    }

    /**
     * Clears a cookie in the browser.
     */
    public function clearCookie(string $name, ?string $path = '/', string $domain = null, bool $secure = false, bool $httpOnly = true, string $sameSite = null)
    {
        $this->setCookie(new Cookie($name, null, 1, $path, $domain, $secure, $httpOnly, false, $sameSite));
    }

    /**
     * @see HeaderUtils::makeDisposition()
     */
    public function makeDisposition(string $disposition, string $filename, string $filenameFallback = '')
    {
        return HeaderUtils::makeDisposition($disposition, $filename, $filenameFallback);
    }

    /**
     * Returns the calculated value of the cache-control header.
     *
     * This considers several other headers and calculates or modifies the
     * cache-control header to a sensible, conservative value.
     */
    protected function computeCacheControlValue(): string
    {
        if (!$this->cacheControl) {
            if ($this->has('Last-Modified') || $this->has('Expires')) {
                return 'private, must-revalidate'; // allows for heuristic expiration (RFC 7234 Section 4.2.2) in the case of "Last-Modified"
            }

            // conservative by default
            return 'no-cache, private';
        }

        $header = $this->getCacheControlHeader();
        if (isset($this->cacheControl['public']) || isset($this->cacheControl['private'])) {
            return $header;
        }

        // public if s-maxage is defined, private otherwise
        if (!isset($this->cacheControl['s-maxage'])) {
            return $header.', private';
        }

        return $header;
    }

    private function initDate(): void
    {
        $this->set('Date', gmdate('D, d M Y H:i:s').' GMT');
    }
}

• [D] Exception
• [D] File
• [D] RateLimiter
• [D] Session
• [D] Test
• [F] AcceptHeader.php
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• [F] AcceptHeaderItem.php
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• [F] BinaryFileResponse.php
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• [F] CHANGELOG.md
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• [F] composer.json
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• [F] Cookie.php
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• [F] ExpressionRequestMatcher.php
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• [F] FileBag.php
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• [F] HeaderBag.php
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• [F] HeaderUtils.php
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• [F] InputBag.php
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• [F] IpUtils.php
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• [F] JsonResponse.php
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• [F] LICENSE
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• [F] ParameterBag.php
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• [F] README.md
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• [F] RedirectResponse.php
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• [F] Request.php
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• [F] RequestMatcher.php
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• [F] RequestMatcherInterface.php
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• [F] RequestStack.php
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• [F] Response.php
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• [F] ResponseHeaderBag.php
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• [F] ServerBag.php
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• [F] StreamedResponse.php
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• [F] UrlHelper.php
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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