<?php
/**
* Site API: WP_Site class
*
* @package WordPress
* @subpackage Multisite
* @since 4.5.0
*/

/**
* Core class used for interacting with a multisite site.
*
* This class is used during load to populate the `$current_blog` global and
* setup the current site.
*
* @since 4.5.0
*
* @property int $id
* @property int $network_id
* @property string $blogname
* @property string $siteurl
* @property int $post_count
* @property string $home
*/
#[AllowDynamicProperties]
final class WP_Site {

/**
* Site ID.
*
* Named "blog" vs. "site" for legacy reasons.
*
* A numeric string, for compatibility reasons.
*
* @since 4.5.0
* @var string
*/
public $blog_id;

/**
* Domain of the site.
*
* @since 4.5.0
* @var string
*/
public $domain = '';

/**
* Path of the site.
*
* @since 4.5.0
* @var string
*/
public $path = '';

/**
* The ID of the site's parent network.
*
* Named "site" vs. "network" for legacy reasons. An individual site's "site" is
* its network.
*
* A numeric string, for compatibility reasons.
*
* @since 4.5.0
* @var string
*/
public $site_id = '0';

/**
* The date and time on which the site was created or registered.
*
* @since 4.5.0
* @var string Date in MySQL's datetime format.
*/
public $registered = '0000-00-00 00:00:00';

/**
* The date and time on which site settings were last updated.
*
* @since 4.5.0
* @var string Date in MySQL's datetime format.
*/
public $last_updated = '0000-00-00 00:00:00';

/**
* Whether the site should be treated as public.
*
* A numeric string, for compatibility reasons.
*
* @since 4.5.0
* @var string
*/
public $public = '1';

/**
* Whether the site should be treated as archived.
*
* A numeric string, for compatibility reasons.
*
* @since 4.5.0
* @var string
*/
public $archived = '0';

/**
* Whether the site should be treated as mature.
*
* Handling for this does not exist throughout WordPress core, but custom
* implementations exist that require the property to be present.
*
* A numeric string, for compatibility reasons.
*
* @since 4.5.0
* @var string
*/
public $mature = '0';

/**
* Whether the site should be treated as spam.
*
* A numeric string, for compatibility reasons.
*
* @since 4.5.0
* @var string
*/
public $spam = '0';

/**
* Whether the site should be treated as deleted.
*
* A numeric string, for compatibility reasons.
*
* @since 4.5.0
* @var string
*/
public $deleted = '0';

/**
* The language pack associated with this site.
*
* A numeric string, for compatibility reasons.
*
* @since 4.5.0
* @var string
*/
public $lang_id = '0';

/**
* Retrieves a site from the database by its ID.
*
* @since 4.5.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $site_id The ID of the site to retrieve.
* @return WP_Site|false The site's object if found. False if not.
*/
public static function get_instance( $site_id ) {
global $wpdb;

$site_id = (int) $site_id;
if ( ! $site_id ) {
return false;
}

$_site = wp_cache_get( $site_id, 'sites' );

if ( false === $_site ) {
$_site = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->blogs} WHERE blog_id = %d LIMIT 1", $site_id ) );

if ( empty( $_site ) || is_wp_error( $_site ) ) {
$_site = -1;
}

wp_cache_add( $site_id, $_site, 'sites' );
}

if ( is_numeric( $_site ) ) {
return false;
}

return new WP_Site( $_site );
}

/**
* Creates a new WP_Site object.
*
* Will populate object properties from the object provided and assign other
* default properties based on that information.
*
* @since 4.5.0
*
* @param WP_Site|object $site A site object.
*/
public function __construct( $site ) {
foreach ( get_object_vars( $site ) as $key => $value ) {
$this->$key = $value;
}
}

/**
* Converts an object to array.
*
* @since 4.6.0
*
* @return array Object as array.
*/
public function to_array() {
return get_object_vars( $this );
}

/**
* Getter.
*
* Allows current multisite naming conventions when getting properties.
* Allows access to extended site properties.
*
* @since 4.6.0
*
* @param string $key Property to get.
* @return mixed Value of the property. Null if not available.
*/
public function __get( $key ) {
switch ( $key ) {
case 'id':
return (int) $this->blog_id;
case 'network_id':
return (int) $this->site_id;
case 'blogname':
case 'siteurl':
case 'post_count':
case 'home':
default: // Custom properties added by 'site_details' filter.
if ( ! did_action( 'ms_loaded' ) ) {
return null;
}

$details = $this->get_details();
if ( isset( $details->$key ) ) {
return $details->$key;
}
}

return null;
}

/**
* Isset-er.
*
* Allows current multisite naming conventions when checking for properties.
* Checks for extended site properties.
*
* @since 4.6.0
*
* @param string $key Property to check if set.
* @return bool Whether the property is set.
*/
public function __isset( $key ) {
switch ( $key ) {
case 'id':
case 'network_id':
return true;
case 'blogname':
case 'siteurl':
case 'post_count':
case 'home':
if ( ! did_action( 'ms_loaded' ) ) {
return false;
}
return true;
default: // Custom properties added by 'site_details' filter.
if ( ! did_action( 'ms_loaded' ) ) {
return false;
}

$details = $this->get_details();
if ( isset( $details->$key ) ) {
return true;
}
}

return false;
}

/**
* Setter.
*
* Allows current multisite naming conventions while setting properties.
*
* @since 4.6.0
*
* @param string $key Property to set.
* @param mixed $value Value to assign to the property.
*/
public function __set( $key, $value ) {
switch ( $key ) {
case 'id':
$this->blog_id = (string) $value;
break;
case 'network_id':
$this->site_id = (string) $value;
break;
default:
$this->$key = $value;
}
}

/**
* Retrieves the details for this site.
*
* This method is used internally to lazy-load the extended properties of a site.
*
* @since 4.6.0
*
* @see WP_Site::__get()
*
* @return stdClass A raw site object with all details included.
*/
private function get_details() {
$details = wp_cache_get( $this->blog_id, 'site-details' );

if ( false === $details ) {

switch_to_blog( $this->blog_id );
// Create a raw copy of the object for backward compatibility with the filter below.
$details = new stdClass();
foreach ( get_object_vars( $this ) as $key => $value ) {
$details->$key = $value;
}
$details->blogname = get_option( 'blogname' );
$details->siteurl = get_option( 'siteurl' );
$details->post_count = get_option( 'post_count' );
$details->home = get_option( 'home' );
restore_current_blog();

wp_cache_set( $this->blog_id, $details, 'site-details' );
}

/** This filter is documented in wp-includes/ms-blogs.php */
$details = apply_filters_deprecated( 'blog_details', array( $details ), '4.7.0', 'site_details' );

/**
* Filters a site's extended properties.
*
* @since 4.6.0
*
* @param stdClass $details The site details.
*/
$details = apply_filters( 'site_details', $details );

return $details;
}
}