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<?php
declare (strict_types=1);
namespace WordPress\AiClient\Operations\DTO;
use WordPress\AiClient\Common\AbstractDataTransferObject;
use WordPress\AiClient\Operations\Contracts\OperationInterface;
use WordPress\AiClient\Operations\Enums\OperationStateEnum;
use WordPress\AiClient\Results\DTO\GenerativeAiResult;
/**
* Represents a long-running generative AI operation.
*
* This DTO tracks the progress of generative AI tasks that may not complete
* immediately, providing access to the result once available.
*
* @since 0.1.0
*
* @phpstan-import-type GenerativeAiResultArrayShape from GenerativeAiResult
*
* @phpstan-type GenerativeAiOperationArrayShape array{id: string, state: string, result?: GenerativeAiResultArrayShape}
*
* @extends AbstractDataTransferObject<GenerativeAiOperationArrayShape>
*/
class GenerativeAiOperation extends AbstractDataTransferObject implements OperationInterface
{
public const KEY_ID = 'id';
public const KEY_STATE = 'state';
public const KEY_RESULT = 'result';
/**
* @var string Unique identifier for this operation.
*/
private string $id;
/**
* @var OperationStateEnum The current state of the operation.
*/
private OperationStateEnum $state;
/**
* @var GenerativeAiResult|null The result once the operation completes.
*/
private ?GenerativeAiResult $result;
/**
* Constructor.
*
* @since 0.1.0
*
* @param string $id Unique identifier for this operation.
* @param OperationStateEnum $state The current state of the operation.
* @param GenerativeAiResult|null $result The result once the operation completes.
*/
public function __construct(string $id, OperationStateEnum $state, ?GenerativeAiResult $result = null)
{
$this->id = $id;
$this->state = $state;
$this->result = $result;
}
/**
* Creates a deep clone of this operation.
*
* Clones the result object if present to ensure the cloned
* operation is independent of the original.
* The state enum is immutable and can be safely shared.
*
* @since 0.4.2
*/
public function __clone()
{
// Clone the result if present (GenerativeAiResult has __clone)
if ($this->result !== null) {
$this->result = clone $this->result;
}
// Note: $state is an immutable enum and can be safely shared
}
/**
* {@inheritDoc}
*
* @since 0.1.0
*/
public function getId(): string
{
return $this->id;
}
/**
* {@inheritDoc}
*
* @since 0.1.0
*/
public function getState(): OperationStateEnum
{
return $this->state;
}
/**
* Gets the operation result.
*
* @since 0.1.0
*
* @return GenerativeAiResult|null The result or null if not yet complete.
*/
public function getResult(): ?GenerativeAiResult
{
return $this->result;
}
/**
* {@inheritDoc}
*
* @since 0.1.0
*/
public static function getJsonSchema(): array
{
return ['oneOf' => [
// Succeeded state - has result
['type' => 'object', 'properties' => [self::KEY_ID => ['type' => 'string', 'description' => 'Unique identifier for this operation.'], self::KEY_STATE => ['type' => 'string', 'const' => OperationStateEnum::succeeded()->value], self::KEY_RESULT => GenerativeAiResult::getJsonSchema()], 'required' => [self::KEY_ID, self::KEY_STATE, self::KEY_RESULT], 'additionalProperties' => \false],
// All other states - no result
['type' => 'object', 'properties' => [self::KEY_ID => ['type' => 'string', 'description' => 'Unique identifier for this operation.'], self::KEY_STATE => ['type' => 'string', 'enum' => [OperationStateEnum::starting()->value, OperationStateEnum::processing()->value, OperationStateEnum::failed()->value, OperationStateEnum::canceled()->value], 'description' => 'The current state of the operation.']], 'required' => [self::KEY_ID, self::KEY_STATE], 'additionalProperties' => \false],
]];
}
/**
* {@inheritDoc}
*
* @since 0.1.0
*
* @return GenerativeAiOperationArrayShape
*/
public function toArray(): array
{
$data = [self::KEY_ID => $this->id, self::KEY_STATE => $this->state->value];
if ($this->result !== null) {
$data[self::KEY_RESULT] = $this->result->toArray();
}
return $data;
}
/**
* {@inheritDoc}
*
* @since 0.1.0
*/
public static function fromArray(array $array): self
{
static::validateFromArrayData($array, [self::KEY_ID, self::KEY_STATE]);
$state = OperationStateEnum::from($array[self::KEY_STATE]);
if ($state->isSucceeded()) {
// If the operation has succeeded, it must have a result
static::validateFromArrayData($array, [self::KEY_RESULT]);
}
$result = null;
if (isset($array[self::KEY_RESULT])) {
$result = GenerativeAiResult::fromArray($array[self::KEY_RESULT]);
}
return new self($array[self::KEY_ID], $state, $result);
}
}