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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celema\Core; |
| 6 | |
| 7 | use Celema\Core\Exception\OutOfBoundsException; |
| 8 | use Celema\Core\Exception\RuntimeException; |
| 9 | use Celema\Router\RequestWrapper; |
| 10 | use Override; |
| 11 | use Psr\Http\Message\ServerRequestInterface as PsrServerRequest; |
| 12 | use Psr\Http\Message\StreamInterface as PsrStream; |
| 13 | use Psr\Http\Message\UploadedFileInterface as PsrUploadedFile; |
| 14 | use Psr\Http\Message\UriInterface as PsrUri; |
| 15 | |
| 16 | /** |
| 17 | * A reading API over a PSR-7 server request. Like the request it wraps, it |
| 18 | * is immutable: the `with*()` methods return a new wrapper, so a change is |
| 19 | * never visible to other holders of the same wrapper. |
| 20 | * |
| 21 | * @api |
| 22 | */ |
| 23 | class Request implements RequestWrapper |
| 24 | { |
| 25 | public function __construct( |
| 26 | protected readonly PsrServerRequest $psrRequest, |
| 27 | ) {} |
| 28 | |
| 29 | #[Override] |
| 30 | public function unwrap(): PsrServerRequest |
| 31 | { |
| 32 | return $this->psrRequest; |
| 33 | } |
| 34 | |
| 35 | /** @return array<array-key, mixed> */ |
| 36 | public function params(): array |
| 37 | { |
| 38 | return $this->psrRequest->getQueryParams(); |
| 39 | } |
| 40 | |
| 41 | public function param(string $key, mixed $default = null): mixed |
| 42 | { |
| 43 | $params = $this->psrRequest->getQueryParams(); |
| 44 | $error = 'Query string variable not found'; |
| 45 | |
| 46 | return $this->returnOrFail($params, $key, $default, $error, func_num_args()); |
| 47 | } |
| 48 | |
| 49 | /** @return array<array-key, mixed>|null */ |
| 50 | public function form(): ?array |
| 51 | { |
| 52 | return $this->parsedBody(); |
| 53 | } |
| 54 | |
| 55 | public function field(string $key, mixed $default = null): mixed |
| 56 | { |
| 57 | $body = $this->parsedBody(); |
| 58 | $error = 'Form field not found'; |
| 59 | |
| 60 | return $this->returnOrFail($body, $key, $default, $error, func_num_args()); |
| 61 | } |
| 62 | |
| 63 | /** @return array<array-key, mixed> */ |
| 64 | public function cookies(): array |
| 65 | { |
| 66 | return $this->psrRequest->getCookieParams(); |
| 67 | } |
| 68 | |
| 69 | public function cookie(string $key, mixed $default = null): mixed |
| 70 | { |
| 71 | $params = $this->psrRequest->getCookieParams(); |
| 72 | $error = 'Cookie not found'; |
| 73 | |
| 74 | return $this->returnOrFail($params, $key, $default, $error, func_num_args()); |
| 75 | } |
| 76 | |
| 77 | /** @return array<array-key, mixed> */ |
| 78 | public function serverParams(): array |
| 79 | { |
| 80 | return $this->psrRequest->getServerParams(); |
| 81 | } |
| 82 | |
| 83 | public function server(string $key, mixed $default = null): mixed |
| 84 | { |
| 85 | $params = $this->psrRequest->getServerParams(); |
| 86 | $error = 'Server parameter not found'; |
| 87 | |
| 88 | return $this->returnOrFail($params, $key, $default, $error, func_num_args()); |
| 89 | } |
| 90 | |
| 91 | public function header(string $name): string |
| 92 | { |
| 93 | return $this->psrRequest->getHeaderLine($name); |
| 94 | } |
| 95 | |
| 96 | /** @return string[] */ |
| 97 | public function headerArray(string $header): array |
| 98 | { |
| 99 | return $this->psrRequest->getHeader($header); |
| 100 | } |
| 101 | |
| 102 | /** @return ($firstOnly is true ? array<array-key, string> : array<array-key, string[]>) */ |
| 103 | public function headers(bool $firstOnly = false): array |
| 104 | { |
| 105 | $headers = $this->psrRequest->getHeaders(); |
| 106 | |
| 107 | if ($firstOnly) { |
| 108 | return array_map(static fn(array $val): string => $val[0] ?? '', $headers); |
| 109 | } |
| 110 | |
| 111 | return $headers; |
| 112 | } |
| 113 | |
| 114 | public function withHeader(string $header, string $value): static |
| 115 | { |
| 116 | return $this->wrapping($this->psrRequest->withHeader($header, $value)); |
| 117 | } |
| 118 | |
| 119 | public function withAddedHeader(string $header, string $value): static |
| 120 | { |
| 121 | return $this->wrapping($this->psrRequest->withAddedHeader($header, $value)); |
| 122 | } |
| 123 | |
| 124 | public function withoutHeader(string $header): static |
| 125 | { |
| 126 | return $this->wrapping($this->psrRequest->withoutHeader($header)); |
| 127 | } |
| 128 | |
| 129 | public function hasHeader(string $header): bool |
| 130 | { |
| 131 | return $this->psrRequest->hasHeader($header); |
| 132 | } |
| 133 | |
| 134 | /** @return array<array-key, mixed> */ |
| 135 | public function attributes(): array |
| 136 | { |
| 137 | return $this->psrRequest->getAttributes(); |
| 138 | } |
| 139 | |
| 140 | /** A new wrapper whose request carries the attribute. */ |
| 141 | public function with(string $attribute, mixed $value): static |
| 142 | { |
| 143 | return $this->wrapping($this->psrRequest->withAttribute($attribute, $value)); |
| 144 | } |
| 145 | |
| 146 | public function get(string $key, mixed $default = null): mixed |
| 147 | { |
| 148 | $params = $this->psrRequest->getAttributes(); |
| 149 | $error = 'Request attribute not found'; |
| 150 | |
| 151 | return $this->returnOrFail($params, $key, $default, $error, func_num_args()); |
| 152 | } |
| 153 | |
| 154 | public function uri(): PsrUri |
| 155 | { |
| 156 | return $this->psrRequest->getUri(); |
| 157 | } |
| 158 | |
| 159 | public function origin(): string |
| 160 | { |
| 161 | $uri = $this->psrRequest->getUri(); |
| 162 | $scheme = $uri->getScheme(); |
| 163 | $origin = $scheme !== '' ? $scheme . ':' : ''; |
| 164 | $authority = $uri->getAuthority(); |
| 165 | $origin .= $authority !== '' ? '//' . $authority : ''; |
| 166 | |
| 167 | return $origin; |
| 168 | } |
| 169 | |
| 170 | public function target(): string |
| 171 | { |
| 172 | return $this->psrRequest->getRequestTarget(); |
| 173 | } |
| 174 | |
| 175 | public function method(): string |
| 176 | { |
| 177 | return strtoupper($this->psrRequest->getMethod()); |
| 178 | } |
| 179 | |
| 180 | public function isMethod(string $method): bool |
| 181 | { |
| 182 | return strtoupper($method) === $this->method(); |
| 183 | } |
| 184 | |
| 185 | public function body(): PsrStream |
| 186 | { |
| 187 | return $this->psrRequest->getBody(); |
| 188 | } |
| 189 | |
| 190 | public function json( |
| 191 | int $flags = JSON_OBJECT_AS_ARRAY, |
| 192 | ): mixed { |
| 193 | $body = (string) $this->psrRequest->getBody(); |
| 194 | |
| 195 | return json_decode($body, true, flags: $flags); |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * Returns the uploaded files at the given keys. A single file is |
| 200 | * wrapped in a list; nested keys keep their structure. |
| 201 | * |
| 202 | * @no-named-arguments |
| 203 | * |
| 204 | * @param list<string>|string ...$keys |
| 205 | * |
| 206 | * @return array<array-key, mixed> |
| 207 | * |
| 208 | * @throws OutOfBoundsException RuntimeException |
| 209 | */ |
| 210 | public function files(array|string ...$keys): array |
| 211 | { |
| 212 | $files = $this->psrRequest->getUploadedFiles(); |
| 213 | $keys = $this->validateKeys($keys); |
| 214 | |
| 215 | // Walk into the uploaded files structure |
| 216 | foreach ($keys as $key) { |
| 217 | if (is_array($files) && array_key_exists($key, $files)) { |
| 218 | /** |
| 219 | * @psalm-suppress MixedAssignment |
| 220 | * |
| 221 | * Psalm does not support recursive types like: |
| 222 | * T = array<string, string|T> |
| 223 | */ |
| 224 | $files = $files[$key]; |
| 225 | } else { |
| 226 | throw new OutOfBoundsException('Invalid files key ' . $this->formatKeys($keys)); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | // Check if it is a single file upload. |
| 231 | // A multifile upload would already produce an array |
| 232 | if ($files instanceof PsrUploadedFile) { |
| 233 | return [$files]; |
| 234 | } |
| 235 | |
| 236 | assert(is_array($files), 'Uploaded files selection must resolve to an array'); |
| 237 | |
| 238 | return $files; |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * @no-named-arguments |
| 243 | * |
| 244 | * @param list<non-empty-string>|string ...$keys |
| 245 | * |
| 246 | * @throws OutOfBoundsException RuntimeException |
| 247 | */ |
| 248 | public function file(array|string ...$keys): PsrUploadedFile |
| 249 | { |
| 250 | $keys = $this->validateKeys($keys); |
| 251 | |
| 252 | if (count($keys) === 0) { |
| 253 | throw new RuntimeException('No file key given'); |
| 254 | } |
| 255 | |
| 256 | $files = $this->psrRequest->getUploadedFiles(); |
| 257 | $i = 0; |
| 258 | |
| 259 | foreach ($keys as $key) { |
| 260 | if (isset($files[$key])) { |
| 261 | /** @var array<array-key, mixed>|PsrUploadedFile $files */ |
| 262 | $files = $files[$key]; |
| 263 | $i++; |
| 264 | |
| 265 | if ($files instanceof PsrUploadedFile) { |
| 266 | if ($i < count($keys)) { |
| 267 | throw new OutOfBoundsException( |
| 268 | 'Invalid file key (too deep) ' . $this->formatKeys($keys), |
| 269 | ); |
| 270 | } |
| 271 | |
| 272 | return $files; |
| 273 | } |
| 274 | } else { |
| 275 | throw new OutOfBoundsException('Invalid file key ' . $this->formatKeys($keys)); |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | throw new RuntimeException('Multiple files available at key ' . $this->formatKeys($keys)); |
| 280 | } |
| 281 | |
| 282 | /** @return array<array-key, mixed>|null */ |
| 283 | private function parsedBody(): ?array |
| 284 | { |
| 285 | $body = $this->psrRequest->getParsedBody(); |
| 286 | |
| 287 | if (is_object($body)) { |
| 288 | throw new RuntimeException('The parsed body is an object, not form data'); |
| 289 | } |
| 290 | |
| 291 | return $body; |
| 292 | } |
| 293 | |
| 294 | /** @param array<array-key, mixed>|null $array */ |
| 295 | private function returnOrFail( |
| 296 | ?array $array, |
| 297 | string $key, |
| 298 | mixed $default, |
| 299 | string $error, |
| 300 | int $numArgs, |
| 301 | ): mixed { |
| 302 | if ($array !== null && array_key_exists($key, $array)) { |
| 303 | return $array[$key]; |
| 304 | } |
| 305 | |
| 306 | if ($numArgs > 1) { |
| 307 | return $default; |
| 308 | } |
| 309 | |
| 310 | throw new OutOfBoundsException("{$error}: '{$key}'"); |
| 311 | } |
| 312 | |
| 313 | /** @param non-empty-list<string> $keys */ |
| 314 | private function formatKeys(array $keys): string |
| 315 | { |
| 316 | return implode('', array_map( |
| 317 | static fn(string $key): string => "['" . $key . "']", |
| 318 | $keys, |
| 319 | )); |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * @param list<list<string>|string> $keys |
| 324 | * |
| 325 | * @return list<string> |
| 326 | */ |
| 327 | private function validateKeys(array $keys): array |
| 328 | { |
| 329 | if (count($keys) === 1 && is_array($keys[0])) { |
| 330 | $keys = $keys[0]; |
| 331 | } |
| 332 | |
| 333 | $strings = []; |
| 334 | |
| 335 | foreach ($keys as $key) { |
| 336 | if (is_array($key)) { |
| 337 | throw new RuntimeException('Either provide a single array or plain string arguments'); |
| 338 | } |
| 339 | |
| 340 | $strings[] = $key; |
| 341 | } |
| 342 | |
| 343 | return $strings; |
| 344 | } |
| 345 | |
| 346 | /** A copy for the changed request; subclasses keep their own state. */ |
| 347 | private function wrapping(PsrServerRequest $request): static |
| 348 | { |
| 349 | return clone($this, ['psrRequest' => $request]); |
| 350 | } |
| 351 | } |