<?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

 */

final class WP_Site {

	/**

	 * Site ID.

	 *

	 * 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 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 ( ! $_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 ) ) {

				return false;

			}

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

		}

		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 ) {

			$this->$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 );

			$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;

	}

}