'llm_instructions'] = self::EMPTY_RESULT_HINT;
		}

		return $response;
	}

	private function resolve_page( array $input ): int {
		$page = isset( $input['page'] ) ? (int) $input['page'] : 1;

		return max( 1, $page );
	}

	private function resolve_per_page( array $input ): int {
		$per_page = isset( $input['per_page'] ) ? (int) $input['per_page'] : self::DEFAULT_PER_PAGE;

		return max( 1, min( self::MAX_PER_PAGE, $per_page ) );
	}

	private function resolve_mime_types( array $input ): array {
		$type = isset( $input['type'] ) && is_string( $input['type'] ) ? $input['type'] : self::TYPE_ALL;

		if ( self::TYPE_SVG === $type ) {
			return [ self::SVG_MIME_TYPE ];
		}

		if ( self::TYPE_VIDEO === $type ) {
			return self::VIDEO_MIME_TYPES;
		}

		return self::IMAGE_MIME_TYPES;
	}

	private function format_attachment( \WP_Post $attachment ): array {
		$metadata = wp_get_attachment_metadata( $attachment->ID );

		return [
			'id' => (int) $attachment->ID,
			'url' => (string) wp_get_attachment_url( $attachment->ID ),
			'title' => (string) $attachment->post_title,
			'alt' => (string) get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ),
			'mime_type' => (string) $attachment->post_mime_type,
			'width' => isset( $metadata['width'] ) ? (int) $metadata['width'] : null,
			'height' => isset( $metadata['height'] ) ? (int) $metadata['height'] : null,
		];
	}
}