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| 1 | <?php |
| 2 | |
| 3 | namespace Wikimedia\Message; |
| 4 | |
| 5 | use Wikimedia\JsonCodec\JsonCodecableTrait; |
| 6 | |
| 7 | /** |
| 8 | * Value object representing a message for i18n with alternative |
| 9 | * machine-readable data. |
| 10 | * |
| 11 | * This augments a MessageValue with an additional machine-readable code and |
| 12 | * structured data. The intended use is to facilitate error reporting in APIs. |
| 13 | * |
| 14 | * For example, a MessageValue reporting an "integer out of range" error might |
| 15 | * use one of three message keys, depending on whether there is a minimum, a |
| 16 | * maximum, or both. But an API would likely want to use one code for all three |
| 17 | * cases, and would likely want the endpoints represented along the lines of |
| 18 | * `[ 'min' => 1, 'max' => 10 ]` rather than |
| 19 | * `[ 0 => new ScalarParam( ParamType::TEXT, 1 ), 1 => new ScalarParam( ParamType::TEXT, 10 ) ]`. |
| 20 | * |
| 21 | * DataMessageValues are pure value objects and are newable and (de)serializable. |
| 22 | * |
| 23 | * @newable |
| 24 | */ |
| 25 | class DataMessageValue extends MessageValue { |
| 26 | use JsonCodecableTrait; |
| 27 | |
| 28 | private string $code; |
| 29 | private ?array $data; |
| 30 | |
| 31 | /** |
| 32 | * @stable to call |
| 33 | * |
| 34 | * @param string $key |
| 35 | * @param (MessageParam|MessageValue|string|int|float)[] $params |
| 36 | * @param string|null $code String representing the concept behind |
| 37 | * this message. |
| 38 | * @param array|null $data Structured data representing the concept |
| 39 | * behind this message. |
| 40 | */ |
| 41 | public function __construct( string $key, array $params = [], ?string $code = null, ?array $data = null ) { |
| 42 | parent::__construct( $key, $params ); |
| 43 | |
| 44 | $this->code = $code ?? $key; |
| 45 | $this->data = $data; |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Static constructor for easier chaining of `->params()` methods |
| 50 | * |
| 51 | * @param string $key |
| 52 | * @param (MessageParam|MessageValue|string|int|float)[] $params |
| 53 | * @param string|null $code |
| 54 | * @param array|null $data |
| 55 | * |
| 56 | * @return DataMessageValue |
| 57 | */ |
| 58 | public static function new( |
| 59 | string $key, |
| 60 | array $params = [], |
| 61 | ?string $code = null, |
| 62 | ?array $data = null |
| 63 | ): DataMessageValue { |
| 64 | return new DataMessageValue( $key, $params, $code, $data ); |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Get the message code |
| 69 | */ |
| 70 | public function getCode(): string { |
| 71 | return $this->code; |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Get the message's structured data |
| 76 | * @return array|null |
| 77 | */ |
| 78 | public function getData(): ?array { |
| 79 | return $this->data; |
| 80 | } |
| 81 | |
| 82 | public function dump(): string { |
| 83 | $contents = ''; |
| 84 | if ( $this->getParams() ) { |
| 85 | $contents = '<params>'; |
| 86 | foreach ( $this->getParams() as $param ) { |
| 87 | $contents .= $param->dump(); |
| 88 | } |
| 89 | $contents .= '</params>'; |
| 90 | } |
| 91 | |
| 92 | if ( $this->data !== null ) { |
| 93 | $contents .= '<data>' . htmlspecialchars( json_encode( $this->data ), ENT_NOQUOTES ) . '</data>'; |
| 94 | } |
| 95 | |
| 96 | return '<datamessage key="' . htmlspecialchars( $this->getKey() ) . '"' |
| 97 | . ' code="' . htmlspecialchars( $this->code ) . '">' |
| 98 | . $contents |
| 99 | . '</datamessage>'; |
| 100 | } |
| 101 | |
| 102 | public function isSameAs( MessageValue $mv ): bool { |
| 103 | return parent::isSameAs( $mv ) && |
| 104 | $mv instanceof DataMessageValue && |
| 105 | $this->code === $mv->code && |
| 106 | $this->data === $mv->data; |
| 107 | } |
| 108 | |
| 109 | public function toJsonArray(): array { |
| 110 | // WARNING: When changing how this class is serialized, follow the instructions |
| 111 | // at <https://www.mediawiki.org/wiki/Manual:Parser_cache/Serialization_compatibility>! |
| 112 | return parent::toJsonArray() + [ |
| 113 | 'code' => $this->code, |
| 114 | 'data' => $this->data, |
| 115 | ]; |
| 116 | } |
| 117 | |
| 118 | /** @inheritDoc */ |
| 119 | public static function jsonClassHintFor( string $keyName ) { |
| 120 | // JsonStaticClassCodec invokes $className::jsonClassHintFor() so |
| 121 | // we need to have an explicit definition in DataMessageValue, we |
| 122 | // can't simply inherit the static method from MessageValue. |
| 123 | return parent::jsonClassHintFor( $keyName ); |
| 124 | } |
| 125 | |
| 126 | public static function newFromJsonArray( array $json ): DataMessageValue { |
| 127 | // WARNING: When changing how this class is serialized, follow the instructions |
| 128 | // at <https://www.mediawiki.org/wiki/Manual:Parser_cache/Serialization_compatibility>! |
| 129 | return new self( $json['key'], $json['params'], $json['code'], $json['data'] ); |
| 130 | } |
| 131 | } |