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Editing: TranscriptionStreamResponse.php

<?php

declare(strict_types=1);

namespace OpenAI\Responses\Audio;

use OpenAI\Contracts\ResponseContract;
use OpenAI\Exceptions\UnknownEventException;
use OpenAI\Responses\Audio\Streaming\TranscriptTextDelta;
use OpenAI\Responses\Audio\Streaming\TranscriptTextDone;
use OpenAI\Responses\Concerns\ArrayAccessible;
use OpenAI\Testing\Responses\Concerns\FakeableForStreamedResponse;

/**
 * @phpstan-type CreateStreamedResponseType array{event: string, data: array<string, mixed>}
 *
 * @implements ResponseContract<CreateStreamedResponseType>
 */
final class TranscriptionStreamResponse implements ResponseContract
{
    /**
     * @use ArrayAccessible<CreateStreamedResponseType>
     */
    use ArrayAccessible;

use FakeableForStreamedResponse;

private function __construct(
        public readonly string $event,
        public readonly TranscriptTextDelta|TranscriptTextDone $response,
    ) {}

/**
     * @param  array<string, mixed>  $attributes
     */
    public static function from(array $attributes): self
    {
        $event = $attributes['type'] ?? throw new UnknownEventException('Missing event type in streamed response');
        $meta = $attributes['__meta'];
        unset($attributes['__meta']);

$response = match ($event) {
            'transcript.text.delta' => TranscriptTextDelta::from($attributes, $meta), // @phpstan-ignore-line
            'transcript.text.done'  => TranscriptTextDone::from($attributes, $meta), // @phpstan-ignore-line
            default                 => throw new UnknownEventException('Unknown Audio Transcription streaming event: ' . $event),
        };

return new self(
            event: $event, // @phpstan-ignore-line
            response: $response,
        );
    }

/**
     * {@inheritDoc}
     */
    public function toArray(): array
    {
        return [
            'event' => $this->event,
            'data'  => $this->response->toArray(),
        ];
    }
}

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