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<?php
/**
* API helper for the AI blocks.
*
* @package automattic/jetpack
* @since 11.8
*/
use Automattic\Jetpack\Connection\Client;
use Automattic\Jetpack\Connection\Manager;
use Automattic\Jetpack\Status;
/**
* Class Jetpack_AI_Helper
*
* @since 11.8
*/
class Jetpack_AI_Helper {
/**
* Allow new completion every X seconds. Will return cached result otherwise.
*
* @var int
*/
public static $text_completion_cooldown_seconds = 60;
/**
* Cache images for a prompt for a month.
*
* @var int
*/
public static $image_generation_cache_timeout = MONTH_IN_SECONDS;
/**
* Stores the number of JetpackAI calls in case we want to mark AI-assisted posts some way.
*
* @var int
*/
public static $post_meta_with_ai_generation_number = '_jetpack_ai_calls';
/**
* Checks if a given request is allowed to get AI data from WordPress.com.
*
* @param WP_REST_Request $request Full details about the request.
*
* @return true|WP_Error True if the request has access, WP_Error object otherwise.
*/
public static function get_status_permission_check( $request ) { // phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter, VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
/*
* This may need to be updated
* to take into account the different ways we can make requests
* (from a WordPress.com site, from a Jetpack site).
*/
if ( ! current_user_can( 'edit_posts' ) ) {
return new WP_Error(
'rest_forbidden',
__( 'Sorry, you are not allowed to access Jetpack AI help on this site.', 'jetpack' ),
array( 'status' => rest_authorization_required_code() )
);
}
return true;
}
/**
* Return true if these features should be active on the current site.
* Currently, it's limited to WPCOM Simple and Atomic.
*/
public static function is_enabled() {
$default = false;
if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
$default = true;
} elseif ( ( new Automattic\Jetpack\Status\Host() )->is_woa_site() ) {
$default = true;
}
/**
* Filter whether the AI features are enabled in the Jetpack plugin.
*
* @since 11.8
*
* @param bool $default Are AI features enabled? Defaults to false.
*/
return apply_filters( 'jetpack_ai_enabled', $default );
}
/**
* Get the name of the transient for image generation. Unique per prompt and allows for reuse of results for the same prompt across entire WPCOM.
* I expext "puppy" to always be from cache.
*
* @param string $prompt - Supplied prompt.
*/
public static function transient_name_for_image_generation( $prompt ) {
return 'jetpack_openai_image_' . md5( $prompt );
}
/**
* Get the name of the transient for text completion. Unique per user, but not per text. Serves more as a cooldown.
*/
public static function transient_name_for_completion() {
return 'jetpack_openai_completion_' . get_current_user_id(); // Cache for each user, so that other users dont get weird cached version from somebody else.
}
/**
* Mark the edited post as "touched" by AI stuff.
*
* @param int $post_id Post ID for which the content is being generated.
* @return void
*/
private static function mark_post_as_ai_assisted( $post_id ) {
if ( ! $post_id ) {
return;
}
$previous = get_post_meta( $post_id, self::$post_meta_with_ai_generation_number, true );
if ( ! $previous ) {
$previous = 0;
} elseif ( ! is_numeric( $previous ) ) {
// Data corrupted, nothing to do.
return;
}
$new_value = intval( $previous ) + 1;
update_post_meta( $post_id, self::$post_meta_with_ai_generation_number, $new_value );
}
/**
* Get text back from WordPress.com based off a starting text.
*
* @param string $content The content that's already been typed in the block.
* @param int $post_id Post ID for which the content is being generated.
* @return mixed
*/
public static function get_gpt_completion( $content, $post_id ) {
$content = wp_strip_all_tags( $content );
$cache = get_transient( self::transient_name_for_completion() );
if ( $cache ) {
return $cache;
}
if ( ( new Status() )->is_offline_mode() ) {
return new WP_Error(
'dev_mode',
__( 'Jetpack AI is not available in offline mode.', 'jetpack' )
);
}
$site_id = Manager::get_site_id();
if ( is_wp_error( $site_id ) ) {
return $site_id;
}
if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
if ( ! class_exists( 'OpenAI' ) ) {
\require_lib( 'openai' );
}
$result = ( new OpenAI( 'openai', array( 'post_id' => $post_id ) ) )->request_gpt_completion( $content );
if ( is_wp_error( $result ) ) {
return $result;
}
// In case of Jetpack we are setting a transient on the WPCOM and not the remote site. I think the 'get_current_user_id' may default for the connection owner at this point but we'll deal with this later.
set_transient( self::transient_name_for_completion(), $result, self::$text_completion_cooldown_seconds );
self::mark_post_as_ai_assisted( $post_id );
return $result;
}
$response = Client::wpcom_json_api_request_as_user(
sprintf( '/sites/%d/jetpack-ai/completions', $site_id ),
2,
array(
'method' => 'post',
'headers' => array( 'content-type' => 'application/json' ),
),
wp_json_encode(
array(
'content' => $content,
)
),
'wpcom'
);
if ( is_wp_error( $response ) ) {
return $response;
}
$data = json_decode( wp_remote_retrieve_body( $response ) );
if ( wp_remote_retrieve_response_code( $response ) >= 400 ) {
return new WP_Error( $data->code, $data->message, $data->data );
}
set_transient( self::transient_name_for_completion(), $data, self::$text_completion_cooldown_seconds );
self::mark_post_as_ai_assisted( $post_id );
return $data;
}
/**
* Get an array of image objects back from WordPress.com based off a prompt.
*
* @param string $prompt The prompt to generate images for.
* @param int $post_id Post ID for which the content is being generated.
* @return mixed
*/
public static function get_dalle_generation( $prompt, $post_id ) {
$cache = get_transient( self::transient_name_for_image_generation( $prompt ) );
if ( $cache ) {
self::mark_post_as_ai_assisted( $post_id );
return $cache;
}
if ( ( new Status() )->is_offline_mode() ) {
return new WP_Error(
'dev_mode',
__( 'Jetpack AI is not available in offline mode.', 'jetpack' )
);
}
$site_id = Manager::get_site_id();
if ( is_wp_error( $site_id ) ) {
return $site_id;
}
if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
if ( ! class_exists( 'OpenAI' ) ) {
\require_lib( 'openai' );
}
$result = ( new OpenAI( 'openai', array( 'post_id' => $post_id ) ) )->request_dalle_generation( $prompt );
if ( is_wp_error( $result ) ) {
return $result;
}
set_transient( self::transient_name_for_image_generation( $prompt ), $result, self::$image_generation_cache_timeout );
self::mark_post_as_ai_assisted( $post_id );
return $result;
}
$response = Client::wpcom_json_api_request_as_user(
sprintf( '/sites/%d/jetpack-ai/images/generations', $site_id ),
2,
array(
'method' => 'post',
'headers' => array( 'content-type' => 'application/json' ),
),
wp_json_encode(
array(
'prompt' => $prompt,
)
),
'wpcom'
);
if ( is_wp_error( $response ) ) {
return $response;
}
$data = json_decode( wp_remote_retrieve_body( $response ) );
if ( wp_remote_retrieve_response_code( $response ) >= 400 ) {
return new WP_Error( $data->code, $data->message, $data->data );
}
set_transient( self::transient_name_for_image_generation( $prompt ), $data, self::$image_generation_cache_timeout );
self::mark_post_as_ai_assisted( $post_id );
return $data;
}
}