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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Cosray\Api; |
| 6 | |
| 7 | use Celema\Core\Factory\Factory; |
| 8 | use Psr\Http\Message\ResponseInterface as Response; |
| 9 | |
| 10 | /** JSON bodies and RFC 9457 problem details, the only two things the API answers with. */ |
| 11 | final class Responses |
| 12 | { |
| 13 | public const string JSON = 'application/json'; |
| 14 | public const string PROBLEM = 'application/problem+json'; |
| 15 | |
| 16 | private const array TITLES = [ |
| 17 | 400 => 'Bad Request', |
| 18 | 401 => 'Unauthorized', |
| 19 | 403 => 'Forbidden', |
| 20 | 404 => 'Not Found', |
| 21 | 405 => 'Method Not Allowed', |
| 22 | 406 => 'Not Acceptable', |
| 23 | 409 => 'Conflict', |
| 24 | 410 => 'Gone', |
| 25 | 412 => 'Precondition Failed', |
| 26 | 413 => 'Content Too Large', |
| 27 | 415 => 'Unsupported Media Type', |
| 28 | 422 => 'Unprocessable Content', |
| 29 | 428 => 'Precondition Required', |
| 30 | 500 => 'Internal Server Error', |
| 31 | 503 => 'Service Unavailable', |
| 32 | ]; |
| 33 | |
| 34 | public function __construct( |
| 35 | private readonly Factory $factory, |
| 36 | ) {} |
| 37 | |
| 38 | /** @param array<string, string> $headers */ |
| 39 | public function json(mixed $data, int $status = 200, array $headers = []): Response |
| 40 | { |
| 41 | return $this->body(self::encode($data), $status, ['Content-Type' => self::JSON, ...$headers]); |
| 42 | } |
| 43 | |
| 44 | /** @param array<string, string> $headers */ |
| 45 | public function empty(int $status = 204, array $headers = []): Response |
| 46 | { |
| 47 | return $this->body('', $status, $headers); |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * @param array<string, mixed> $extensions members next to the standard ones, like `errors` |
| 52 | * @param array<string, string> $headers |
| 53 | */ |
| 54 | public function problem(int $status, ?string $detail = null, array $extensions = [], array $headers = []): Response |
| 55 | { |
| 56 | $body = ['type' => 'about:blank', 'title' => self::TITLES[$status] ?? 'Error', 'status' => $status]; |
| 57 | |
| 58 | if ($detail !== null && $detail !== '') { |
| 59 | $body['detail'] = $detail; |
| 60 | } |
| 61 | |
| 62 | return $this->body( |
| 63 | self::encode([...$body, ...$extensions]), |
| 64 | $status, |
| 65 | ['Content-Type' => self::PROBLEM, ...$headers], |
| 66 | ); |
| 67 | } |
| 68 | |
| 69 | public static function encode(mixed $data): string |
| 70 | { |
| 71 | return json_encode( |
| 72 | $data, |
| 73 | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRESERVE_ZERO_FRACTION | JSON_THROW_ON_ERROR, |
| 74 | ); |
| 75 | } |
| 76 | |
| 77 | /** @param array<string, string> $headers */ |
| 78 | private function body(string $body, int $status, array $headers): Response |
| 79 | { |
| 80 | $response = $this->factory->response($status); |
| 81 | |
| 82 | foreach ($headers as $name => $value) { |
| 83 | $response = $response->withHeader($name, $value); |
| 84 | } |
| 85 | |
| 86 | if ($body !== '') { |
| 87 | $response->getBody()->write($body); |
| 88 | } |
| 89 | |
| 90 | return $response; |
| 91 | } |
| 92 | } |