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| 1 | <?php |
| 2 | |
| 3 | namespace Miniframe\Response; |
| 4 | |
| 5 | use Miniframe\Core\Request; |
| 6 | use Miniframe\Core\Response; |
| 7 | |
| 8 | class RedirectResponse extends Response |
| 9 | { |
| 10 | /** |
| 11 | * URL to which we redirect |
| 12 | * |
| 13 | * @var string |
| 14 | */ |
| 15 | private $url; |
| 16 | |
| 17 | public const |
| 18 | MOVED_PERMANENTLY = 301, // GET methods unchanged. Others may or may not be changed to GET. |
| 19 | FOUND = 302, // GET methods unchanged. Others may or may not be changed to GET. |
| 20 | SEE_OTHER = 303, // GET methods unchanged. Others changed to GET (body lost). |
| 21 | TEMPORARY_REDIRECT = 307, // Method and body not changed. |
| 22 | PERMANENT_REDIRECT = 308; // Method and body not changed. |
| 23 | |
| 24 | /** |
| 25 | * Initializes a new Redirect response |
| 26 | * |
| 27 | * @param string $url URL to redirect to. |
| 28 | * @param integer $responseCode One of the HTTP response codes for a redirect. |
| 29 | */ |
| 30 | public function __construct(string $url, int $responseCode = self::FOUND) |
| 31 | { |
| 32 | $html = '<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">' . PHP_EOL |
| 33 | . '<html><head>' . PHP_EOL |
| 34 | . '<title>' . $responseCode . ' ' . $this->getResponseText($responseCode) . '</title>' . PHP_EOL |
| 35 | . '</head><body>' . PHP_EOL |
| 36 | . '<p>The document has moved <a href="' . htmlspecialchars($url) . '">here</a>.</p>' . PHP_EOL |
| 37 | . '<hr>' . PHP_EOL |
| 38 | . (Request::getActual()->getServer('SERVER_SIGNATURE') ?? '') . PHP_EOL |
| 39 | . '</body></html>'; |
| 40 | parent::__construct($html); |
| 41 | |
| 42 | $this->url = $url; |
| 43 | $this->setResponseCode($responseCode); |
| 44 | $this->addHeader('Location: ' . $this->url); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Converts a HTTP status code to it's label |
| 49 | * |
| 50 | * @param integer $responseCode One of the HTTP response codes for a redirect. |
| 51 | * |
| 52 | * @return string |
| 53 | */ |
| 54 | private function getResponseText(int $responseCode): string |
| 55 | { |
| 56 | if ($responseCode == static::MOVED_PERMANENTLY) { |
| 57 | return 'Moved permanently'; |
| 58 | } |
| 59 | if ($responseCode == static::FOUND) { |
| 60 | return 'Found'; |
| 61 | } |
| 62 | if ($responseCode == static::SEE_OTHER) { |
| 63 | return 'See other'; |
| 64 | } |
| 65 | if ($responseCode == static::TEMPORARY_REDIRECT) { |
| 66 | return 'Temporary redirect'; |
| 67 | } |
| 68 | if ($responseCode == static::PERMANENT_REDIRECT) { |
| 69 | return 'Permanent redirect'; |
| 70 | } |
| 71 | throw new \RuntimeException('Invalid response code for redirects: ' . $responseCode); |
| 72 | } |
| 73 | } |