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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | /** |
| 5 | * ParamValidatorCallbacks.php |
| 6 | * |
| 7 | * This file is part of the Codex design system, the official design system |
| 8 | * for Wikimedia projects. It provides the `ParamValidatorCallbacks` class, which |
| 9 | * implements the `IParamValidatorCallbacks` interface. This class serves as a simple wrapper |
| 10 | * around an associative array, providing standardized access to web request data |
| 11 | * for Codex components. |
| 12 | * |
| 13 | * The `ParamValidatorCallbacks` class enables Codex to interact with request data in a consistent |
| 14 | * manner without being tightly coupled to a specific web framework. |
| 15 | * |
| 16 | * This class is inspired by and borrows concepts from MediaWiki's `ParamValidator`. |
| 17 | * While it has been adapted to meet the requirements of the Codex system, it maintains |
| 18 | * a similar approach to parameter validation. Any direct code or conceptual borrowing |
| 19 | * has been done with due acknowledgment of MediaWiki's contributors. |
| 20 | * |
| 21 | * @category ParamValidator |
| 22 | * @package Codex\ParamValidator |
| 23 | * @since 0.3.0 |
| 24 | * @author Doğu Abaris <abaris@null.net> |
| 25 | * @license https://www.gnu.org/copyleft/gpl.html GPL-2.0-or-later |
| 26 | * @link https://doc.wikimedia.org/codex/main/ Codex Documentation |
| 27 | */ |
| 28 | |
| 29 | namespace Wikimedia\Codex\ParamValidator; |
| 30 | |
| 31 | use Wikimedia\Codex\Contract\ParamValidator\IParamValidatorCallbacks; |
| 32 | |
| 33 | /** |
| 34 | * ParamValidatorCallbacks provides access to web request data using an array structure. |
| 35 | * |
| 36 | * The `ParamValidatorCallbacks` class implements the `IWebRequest` interface, allowing it |
| 37 | * to provide a simple, array-based mechanism for accessing request parameters. |
| 38 | * It adapts an associative array of request data, allowing Codex components to |
| 39 | * retrieve values in a standardized way. |
| 40 | * |
| 41 | * This implementation is inspired by MediaWiki's `ParamValidator`, with notable |
| 42 | * adaptations for Codex-specific needs. The approach and structure of this class |
| 43 | * owe much to the original design, and credit is extended to MediaWiki's contributors. |
| 44 | * |
| 45 | * @category ParamValidator |
| 46 | * @package Codex\ParamValidator |
| 47 | * @since 0.3.0 |
| 48 | * @author Doğu Abaris <abaris@null.net> |
| 49 | * @license https://www.gnu.org/copyleft/gpl.html GPL-2.0-or-later |
| 50 | * @link https://doc.wikimedia.org/codex/main/ Codex Documentation |
| 51 | * TODO: Once MediaWiki's ParamValidator is split into a standalone library, use it's `Callbacks` interface instead. |
| 52 | * TODO: Once MediaWiki's ParamValidator is split into a standalone library, this class will no longer be necessary. |
| 53 | */ |
| 54 | class ParamValidatorCallbacks implements IParamValidatorCallbacks { |
| 55 | |
| 56 | /** |
| 57 | * The array containing request data from $_GET and $_POST. |
| 58 | * |
| 59 | * @var array<string, mixed> |
| 60 | */ |
| 61 | private array $params; |
| 62 | |
| 63 | /** |
| 64 | * Constructor for ParamValidatorCallbacks. |
| 65 | * |
| 66 | * @param array<string, mixed> $params Associative array of request parameters. |
| 67 | */ |
| 68 | public function __construct( array $params ) { |
| 69 | $this->params = $params; |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Test if a parameter exists in the request. |
| 74 | * |
| 75 | * This method checks whether a given parameter name exists in the request data. |
| 76 | * |
| 77 | * @since 0.3.0 |
| 78 | * @param string $name The name of the parameter to check. |
| 79 | * @param array $options An associative array of options that may modify the behavior. |
| 80 | * |
| 81 | * @return bool True if the parameter exists; false otherwise. |
| 82 | */ |
| 83 | public function hasParam( string $name, array $options ): bool { |
| 84 | return array_key_exists( $name, $this->params ); |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Fetch a value from the request data. |
| 89 | * |
| 90 | * This method retrieves the value of a specific parameter from the request data. |
| 91 | * If the parameter is not present, the provided default value will be returned. |
| 92 | * |
| 93 | * @since 0.3.0 |
| 94 | * @param string $name The name of the parameter to fetch. |
| 95 | * @param mixed $default The default value to return if the parameter is not set. |
| 96 | * @param array $options An associative array of options that may modify the behavior. |
| 97 | * |
| 98 | * @return mixed The value of the parameter, or the `$default` value if the parameter is not set. |
| 99 | */ |
| 100 | public function getValue( string $name, $default, array $options ) { |
| 101 | return $this->params[$name] ?? $default; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Get all parameters from the request. |
| 106 | * |
| 107 | * This method returns all parameters that were provided in the request |
| 108 | * as an associative array. |
| 109 | * |
| 110 | * @since 0.3.0 |
| 111 | * @return array<string, mixed> All request parameters. |
| 112 | */ |
| 113 | public function getAllParams(): array { |
| 114 | return $this->params; |
| 115 | } |
| 116 | } |