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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\Search\Plan as Search_Plan;
use Automattic\Jetpack\Status;
use Automattic\Jetpack\Status\Visitor;
/**
* 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 = 15;
/**
* Cache images for a prompt for a month.
*
* @var int
*/
public static $image_generation_cache_timeout = MONTH_IN_SECONDS;
/**
* Cache AI-assistant feature for ten seconds.
*
* @var int
*/
public static $ai_assistant_feature_cache_timeout = 10;
/**
* 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 );
}
/**
* Return true if the AI chat feature should be active on the current site.
*
* @todo IS_WPCOM (the endpoints need to be updated too).
*
* @return bool
*/
public static function is_ai_chat_enabled() {
$default = false;
$connection = new Manager();
$plan = new Search_Plan();
if ( $connection->is_connected() && $plan->supports_search() ) {
$default = true;
}
/**
* Filter whether the AI chat feature is enabled in the Jetpack plugin.
*
* @since 12.6
*
* @param bool $default Is AI chat enabled? Defaults to false.
*/
return apply_filters( 'jetpack_ai_chat_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.
}
/**
* Get the name of the transient for AI assistance feature. Unique per user.
*
* @param int $blog_id - Blog ID to get the transient name for.
* @return string
*/
public static function transient_name_for_ai_assistance_feature( $blog_id ) {
return 'jetpack_openai_ai_assistance_feature_' . $blog_id;
}
/**
* 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 provided to send to the AI.
* @param int $post_id Post ID for which the content is being generated.
* @param bool $skip_cache Skip cache and force a new request.
* @return mixed
*/
public static function get_gpt_completion( $content, $post_id, $skip_cache = false ) {
$content = wp_strip_all_tags( $content );
$cache = get_transient( self::transient_name_for_completion() );
if ( $cache && ! $skip_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' );
}
// Set the content for chatGPT endpoint
$data = array(
array(
'role' => 'user',
'content' => $content,
),
);
$openai = new OpenAI( 'openai', array( 'post_id' => $post_id ) );
$moderation_result = $openai->moderate(
implode(
' ',
array_map(
function ( $msg ) {
return $msg['role'] === 'user' ? $msg['content'] : '';
},
$data
)
)
);
if ( is_wp_error( $moderation_result ) ) {
return $moderation_result;
}
$max_tokens = 480; // Default
$result = $openai->request_chat_completion( $data, $max_tokens );
if ( is_wp_error( $result ) ) {
return $result;
}
$response = $result->choices[0]->message->content;
// 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(), $response, self::$text_completion_cooldown_seconds );
self::mark_post_as_ai_assisted( $post_id );
return $response;
}
$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 );
}
// Do not cache if it should be skipped.
if ( ! $skip_cache ) {
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;
}
/**
* Get an object with useful data about the requests made to the AI.
*
* @return mixed
*/
public static function get_ai_assistance_feature() {
if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
// On WPCOM, we can get the ID from the site.
$blog_id = get_current_blog_id();
$has_ai_assistant_feature = \wpcom_site_has_feature( 'ai-assistant', $blog_id );
if ( ! class_exists( 'WPCOM\Jetpack_AI\Usage\Helper' ) ) {
if ( is_readable( WP_CONTENT_DIR . '/lib/jetpack-ai/usage/helper.php' ) ) {
require_once WP_CONTENT_DIR . '/lib/jetpack-ai/usage/helper.php';
} else {
return new WP_Error(
'jetpack_ai_usage_helper_not_found',
__( 'WPCOM\Jetpack_AI\Usage\Helper class not found.', 'jetpack' )
);
}
}
// Determine the upgrade type
$upgrade_type = wpcom_is_vip( $blog_id ) ? 'vip' : 'default';
return array(
'has-feature' => $has_ai_assistant_feature,
'is-over-limit' => WPCOM\Jetpack_AI\Usage\Helper::is_over_limit( $blog_id ),
'requests-count' => WPCOM\Jetpack_AI\Usage\Helper::get_all_time_requests_count( $blog_id ),
'requests-limit' => WPCOM\Jetpack_AI\Usage\Helper::get_free_requests_limit( $blog_id ),
'usage-period' => WPCOM\Jetpack_AI\Usage\Helper::get_period_data( $blog_id ),
'site-require-upgrade' => WPCOM\Jetpack_AI\Usage\Helper::site_requires_upgrade( $blog_id ),
'upgrade-type' => $upgrade_type,
'upgrade-url' => WPCOM\Jetpack_AI\Usage\Helper::get_upgrade_url( $blog_id ),
'current-tier' => WPCOM\Jetpack_AI\Usage\Helper::get_current_tier( $blog_id ),
'next-tier' => WPCOM\Jetpack_AI\Usage\Helper::get_next_tier( $blog_id ),
'tier-plans' => WPCOM\Jetpack_AI\Usage\Helper::get_tier_plans_list(),
'tier-plans-enabled' => WPCOM\Jetpack_AI\Usage\Helper::ai_tier_plans_enabled(),
'costs' => WPCOM\Jetpack_AI\Usage\Helper::get_costs(),
);
}
// Outside of WPCOM, we need to fetch the data from the site.
$blog_id = Jetpack_Options::get_option( 'id' );
// Try to pick the AI Assistant feature from cache.
$transient_name = self::transient_name_for_ai_assistance_feature( $blog_id );
$cache = get_transient( $transient_name );
if ( $cache ) {
return $cache;
}
$request_path = sprintf( '/sites/%d/jetpack-ai/ai-assistant-feature', $blog_id );
$wpcom_request = Client::wpcom_json_api_request_as_user(
$request_path,
'v2',
array(
'method' => 'GET',
'headers' => array(
'X-Forwarded-For' => ( new Visitor() )->get_ip( true ),
),
),
null,
'wpcom'
);
$response_code = wp_remote_retrieve_response_code( $wpcom_request );
if ( 200 === $response_code ) {
$ai_assistant_feature_data = json_decode( wp_remote_retrieve_body( $wpcom_request ), true );
// Cache the AI Assistant feature, for Jetpack sites.
set_transient( $transient_name, $ai_assistant_feature_data, self::$ai_assistant_feature_cache_timeout );
return $ai_assistant_feature_data;
} else {
return new WP_Error(
'failed_to_fetch_data',
esc_html__( 'Unable to fetch the requested data.', 'jetpack' ),
array( 'status' => $response_code )
);
}
}
}