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<?php
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namespace GuzzleHttp\Psr7;
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use Psr\Http\Message\ResponseInterface;
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use Psr\Http\Message\StreamInterface;
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/**
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 * PSR-7 response implementation.
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 */
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class Response implements ResponseInterface
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{
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    use MessageTrait;
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    /** @var array Map of standard HTTP status code/reason phrases */
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    private static $phrases = [
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        100 => 'Continue',
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        101 => 'Switching Protocols',
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        102 => 'Processing',
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        200 => 'OK',
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        201 => 'Created',
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        202 => 'Accepted',
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        203 => 'Non-Authoritative Information',
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        204 => 'No Content',
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        205 => 'Reset Content',
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        206 => 'Partial Content',
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        207 => 'Multi-status',
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        208 => 'Already Reported',
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        300 => 'Multiple Choices',
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        301 => 'Moved Permanently',
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        302 => 'Found',
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        303 => 'See Other',
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        304 => 'Not Modified',
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        305 => 'Use Proxy',
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        306 => 'Switch Proxy',
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        307 => 'Temporary Redirect',
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        400 => 'Bad Request',
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        401 => 'Unauthorized',
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        402 => 'Payment Required',
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        403 => 'Forbidden',
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        404 => 'Not Found',
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        405 => 'Method Not Allowed',
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        406 => 'Not Acceptable',
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        407 => 'Proxy Authentication Required',
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        408 => 'Request Time-out',
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        409 => 'Conflict',
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        410 => 'Gone',
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        411 => 'Length Required',
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        412 => 'Precondition Failed',
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        413 => 'Request Entity Too Large',
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        414 => 'Request-URI Too Large',
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        415 => 'Unsupported Media Type',
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        416 => 'Requested range not satisfiable',
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        417 => 'Expectation Failed',
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        418 => 'I\'m a teapot',
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        422 => 'Unprocessable Entity',
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        423 => 'Locked',
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        424 => 'Failed Dependency',
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        425 => 'Unordered Collection',
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        426 => 'Upgrade Required',
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        428 => 'Precondition Required',
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        429 => 'Too Many Requests',
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        431 => 'Request Header Fields Too Large',
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        451 => 'Unavailable For Legal Reasons',
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        500 => 'Internal Server Error',
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        501 => 'Not Implemented',
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        502 => 'Bad Gateway',
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        503 => 'Service Unavailable',
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        504 => 'Gateway Time-out',
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        505 => 'HTTP Version not supported',
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        506 => 'Variant Also Negotiates',
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        507 => 'Insufficient Storage',
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        508 => 'Loop Detected',
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        511 => 'Network Authentication Required',
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    ];
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    /** @var string */
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    private $reasonPhrase = '';
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    /** @var int */
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    private $statusCode = 200;
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    /**
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     * @param int                                  $status  Status code
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     * @param array                                $headers Response headers
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     * @param string|null|resource|StreamInterface $body    Response body
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     * @param string                               $version Protocol version
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     * @param string|null                          $reason  Reason phrase (when empty a default will be used based on the status code)
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     */
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    public function __construct(
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        $status = 200,
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        array $headers = [],
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        $body = null,
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        $version = '1.1',
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        $reason = null
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    ) {
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        $this->assertStatusCodeIsInteger($status);
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        $status = (int) $status;
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        $this->assertStatusCodeRange($status);
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        $this->statusCode = $status;
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        if ($body !== '' && $body !== null) {
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            $this->stream = Utils::streamFor($body);
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        }
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        $this->setHeaders($headers);
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        if ($reason == '' && isset(self::$phrases[$this->statusCode])) {
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            $this->reasonPhrase = self::$phrases[$this->statusCode];
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        } else {
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            $this->reasonPhrase = (string) $reason;
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        }
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        $this->protocol = $version;
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    }
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    public function getStatusCode()
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    {
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        return $this->statusCode;
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    }
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    public function getReasonPhrase()
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    {
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        return $this->reasonPhrase;
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    }
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    public function withStatus($code, $reasonPhrase = '')
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    {
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        $this->assertStatusCodeIsInteger($code);
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        $code = (int) $code;
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        $this->assertStatusCodeRange($code);
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        $new = clone $this;
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        $new->statusCode = $code;
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        if ($reasonPhrase == '' && isset(self::$phrases[$new->statusCode])) {
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            $reasonPhrase = self::$phrases[$new->statusCode];
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        }
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        $new->reasonPhrase = (string) $reasonPhrase;
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        return $new;
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    }
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    private function assertStatusCodeIsInteger($statusCode)
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    {
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        if (filter_var($statusCode, FILTER_VALIDATE_INT) === false) {
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            throw new \InvalidArgumentException('Status code must be an integer value.');
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        }
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    }
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    private function assertStatusCodeRange($statusCode)
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    {
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        if ($statusCode < 100 || $statusCode >= 600) {
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            throw new \InvalidArgumentException('Status code must be an integer value between 1xx and 5xx.');
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        }
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    }
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}