<?php

/**

 * Site/blog functions that work with the blogs table and related data.

 *

 * @package WordPress

 * @subpackage Multisite

 * @since MU (3.0.0)

 */

/**

 * Update the last_updated field for the current site.

 *

 * @since MU (3.0.0)

 */

function wpmu_update_blogs_date() {

	$site_id = get_current_blog_id();

	update_blog_details( $site_id, array( 'last_updated' => current_time( 'mysql', true ) ) );

	/**

	 * Fires after the blog details are updated.

	 *

	 * @since MU (3.0.0)

	 *

	 * @param int $blog_id Site ID.

	 */

	do_action( 'wpmu_blog_updated', $site_id );

}

/**

 * Get a full blog URL, given a blog id.

 *

 * @since MU (3.0.0)

 *

 * @param int $blog_id Blog ID

 * @return string Full URL of the blog if found. Empty string if not.

 */

function get_blogaddress_by_id( $blog_id ) {

	$bloginfo = get_site( (int) $blog_id );

	if ( empty( $bloginfo ) ) {

		return '';

	}

	$scheme = parse_url( $bloginfo->home, PHP_URL_SCHEME );

	$scheme = empty( $scheme ) ? 'http' : $scheme;

	return esc_url( $scheme . '://' . $bloginfo->domain . $bloginfo->path );

}

/**

 * Get a full blog URL, given a blog name.

 *

 * @since MU (3.0.0)

 *

 * @param string $blogname The (subdomain or directory) name

 * @return string

 */

function get_blogaddress_by_name( $blogname ) {

	if ( is_subdomain_install() ) {

		if ( $blogname == 'main' )

			$blogname = 'www';

		$url = rtrim( network_home_url(), '/' );

		if ( !empty( $blogname ) )

			$url = preg_replace( '|^([^\.]+://)|', "\${1}" . $blogname . '.', $url );

	} else {

		$url = network_home_url( $blogname );

	}

	return esc_url( $url . '/' );

}

/**

 * Retrieves a sites ID given its (subdomain or directory) slug.

 *

 * @since MU (3.0.0)

 * @since 4.7.0 Converted to use get_sites().

 *

 * @param string $slug A site's slug.

 * @return int|null The site ID, or null if no site is found for the given slug.

 */

function get_id_from_blogname( $slug ) {

	$current_network = get_network();

	$slug = trim( $slug, '/' );

	if ( is_subdomain_install() ) {

		$domain = $slug . '.' . preg_replace( '|^www\.|', '', $current_network->domain );

		$path = $current_network->path;

	} else {

		$domain = $current_network->domain;

		$path = $current_network->path . $slug . '/';

	}

	$site_ids = get_sites( array(

		'number' => 1,

		'fields' => 'ids',

		'domain' => $domain,

		'path' => $path,

	) );

	if ( empty( $site_ids ) ) {

		return null;

	}

	return array_shift( $site_ids );

}

/**

 * Retrieve the details for a blog from the blogs table and blog options.

 *

 * @since MU (3.0.0)

 *

 * @global wpdb $wpdb WordPress database abstraction object.

 *

 * @param int|string|array $fields  Optional. A blog ID, a blog slug, or an array of fields to query against.

 *                                  If not specified the current blog ID is used.

 * @param bool             $get_all Whether to retrieve all details or only the details in the blogs table.

 *                                  Default is true.

 * @return WP_Site|false Blog details on success. False on failure.

 */

function get_blog_details( $fields = null, $get_all = true ) {

	global $wpdb;

	if ( is_array($fields ) ) {

		if ( isset($fields['blog_id']) ) {

			$blog_id = $fields['blog_id'];

		} elseif ( isset($fields['domain']) && isset($fields['path']) ) {

			$key = md5( $fields['domain'] . $fields['path'] );

			$blog = wp_cache_get($key, 'blog-lookup');

			if ( false !== $blog )

				return $blog;

			if ( substr( $fields['domain'], 0, 4 ) == 'www.' ) {

				$nowww = substr( $fields['domain'], 4 );

				$blog = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->blogs WHERE domain IN (%s,%s) AND path = %s ORDER BY CHAR_LENGTH(domain) DESC", $nowww, $fields['domain'], $fields['path'] ) );

			} else {

				$blog = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->blogs WHERE domain = %s AND path = %s", $fields['domain'], $fields['path'] ) );

			}

			if ( $blog ) {

				wp_cache_set($blog->blog_id . 'short', $blog, 'blog-details');

				$blog_id = $blog->blog_id;

			} else {

				return false;

			}

		} elseif ( isset($fields['domain']) && is_subdomain_install() ) {

			$key = md5( $fields['domain'] );

			$blog = wp_cache_get($key, 'blog-lookup');

			if ( false !== $blog )

				return $blog;

			if ( substr( $fields['domain'], 0, 4 ) == 'www.' ) {

				$nowww = substr( $fields['domain'], 4 );

				$blog = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->blogs WHERE domain IN (%s,%s) ORDER BY CHAR_LENGTH(domain) DESC", $nowww, $fields['domain'] ) );

			} else {

				$blog = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->blogs WHERE domain = %s", $fields['domain'] ) );

			}

			if ( $blog ) {

				wp_cache_set($blog->blog_id . 'short', $blog, 'blog-details');

				$blog_id = $blog->blog_id;

			} else {

				return false;

			}

		} else {

			return false;

		}

	} else {

		if ( ! $fields )

			$blog_id = get_current_blog_id();

		elseif ( ! is_numeric( $fields ) )

			$blog_id = get_id_from_blogname( $fields );

		else

			$blog_id = $fields;

	}

	$blog_id = (int) $blog_id;

	$all = $get_all == true ? '' : 'short';

	$details = wp_cache_get( $blog_id . $all, 'blog-details' );

	if ( $details ) {

		if ( ! is_object( $details ) ) {

			if ( $details == -1 ) {

				return false;

			} else {

				// Clear old pre-serialized objects. Cache clients do better with that.

				wp_cache_delete( $blog_id . $all, 'blog-details' );

				unset($details);

			}

		} else {

			return $details;

		}

	}

	// Try the other cache.

	if ( $get_all ) {

		$details = wp_cache_get( $blog_id . 'short', 'blog-details' );

	} else {

		$details = wp_cache_get( $blog_id, 'blog-details' );

		// If short was requested and full cache is set, we can return.

		if ( $details ) {

			if ( ! is_object( $details ) ) {

				if ( $details == -1 ) {

					return false;

				} else {

					// Clear old pre-serialized objects. Cache clients do better with that.

					wp_cache_delete( $blog_id, 'blog-details' );

					unset($details);

				}

			} else {

				return $details;

			}

		}

	}

	if ( empty($details) ) {

		$details = WP_Site::get_instance( $blog_id );

		if ( ! $details ) {

			// Set the full cache.

			wp_cache_set( $blog_id, -1, 'blog-details' );

			return false;

		}

	}

	if ( ! $details instanceof WP_Site ) {

		$details = new WP_Site( $details );

	}

	if ( ! $get_all ) {

		wp_cache_set( $blog_id . $all, $details, 'blog-details' );

		return $details;

	}

	switch_to_blog( $blog_id );

	$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();

	/**

	 * Filters a blog's details.

	 *

	 * @since MU (3.0.0)

	 * @deprecated 4.7.0 Use site_details

	 *

	 * @param object $details The blog details.

	 */

	$details = apply_filters_deprecated( 'blog_details', array( $details ), '4.7.0', 'site_details' );

	wp_cache_set( $blog_id . $all, $details, 'blog-details' );

	$key = md5( $details->domain . $details->path );

	wp_cache_set( $key, $details, 'blog-lookup' );

	return $details;

}

/**

 * Clear the blog details cache.

 *

 * @since MU (3.0.0)

 *

 * @param int $blog_id Optional. Blog ID. Defaults to current blog.

 */

function refresh_blog_details( $blog_id = 0 ) {

	$blog_id = (int) $blog_id;

	if ( ! $blog_id ) {

		$blog_id = get_current_blog_id();

	}

	clean_blog_cache( $blog_id );

}

/**

 * Update the details for a blog. Updates the blogs table for a given blog id.

 *

 * @since MU (3.0.0)

 *

 * @global wpdb $wpdb WordPress database abstraction object.

 *

 * @param int   $blog_id Blog ID

 * @param array $details Array of details keyed by blogs table field names.

 * @return bool True if update succeeds, false otherwise.

 */

function update_blog_details( $blog_id, $details = array() ) {

	global $wpdb;

	if ( empty($details) )

		return false;

	if ( is_object($details) )

		$details = get_object_vars($details);

	$current_details = get_site( $blog_id );

	if ( empty($current_details) )

		return false;

	$current_details = get_object_vars($current_details);

	$details = array_merge($current_details, $details);

	$details['last_updated'] = current_time('mysql', true);

	$update_details = array();

	$fields = array( 'site_id', 'domain', 'path', 'registered', 'last_updated', 'public', 'archived', 'mature', 'spam', 'deleted', 'lang_id');

	foreach ( array_intersect( array_keys( $details ), $fields ) as $field ) {

		if ( 'path' === $field ) {

			$details[ $field ] = trailingslashit( '/' . trim( $details[ $field ], '/' ) );

		}

		$update_details[ $field ] = $details[ $field ];

	}

	$result = $wpdb->update( $wpdb->blogs, $update_details, array('blog_id' => $blog_id) );

	if ( false === $result )

		return false;

	// If spam status changed, issue actions.

	if ( $details['spam'] != $current_details['spam'] ) {

		if ( $details['spam'] == 1 ) {

			/**

			 * Fires when the 'spam' status is added to a blog.

			 *

			 * @since MU (3.0.0)

			 *

			 * @param int $blog_id Blog ID.

			 */

			do_action( 'make_spam_blog', $blog_id );

		} else {

			/**

			 * Fires when the 'spam' status is removed from a blog.

			 *

			 * @since MU (3.0.0)

			 *

			 * @param int $blog_id Blog ID.

			 */

			do_action( 'make_ham_blog', $blog_id );

		}

	}

	// If mature status changed, issue actions.

	if ( $details['mature'] != $current_details['mature'] ) {

		if ( $details['mature'] == 1 ) {

			/**

			 * Fires when the 'mature' status is added to a blog.

			 *

			 * @since 3.1.0

			 *

			 * @param int $blog_id Blog ID.

			 */

			do_action( 'mature_blog', $blog_id );

		} else {

			/**

			 * Fires when the 'mature' status is removed from a blog.

			 *

			 * @since 3.1.0

			 *

			 * @param int $blog_id Blog ID.

			 */

			do_action( 'unmature_blog', $blog_id );

		}

	}

	// If archived status changed, issue actions.

	if ( $details['archived'] != $current_details['archived'] ) {

		if ( $details['archived'] == 1 ) {

			/**

			 * Fires when the 'archived' status is added to a blog.

			 *

			 * @since MU (3.0.0)

			 *

			 * @param int $blog_id Blog ID.

			 */

			do_action( 'archive_blog', $blog_id );

		} else {

			/**

			 * Fires when the 'archived' status is removed from a blog.

			 *

			 * @since MU (3.0.0)

			 *

			 * @param int $blog_id Blog ID.

			 */

			do_action( 'unarchive_blog', $blog_id );

		}

	}

	// If deleted status changed, issue actions.

	if ( $details['deleted'] != $current_details['deleted'] ) {

		if ( $details['deleted'] == 1 ) {

			/**

			 * Fires when the 'deleted' status is added to a blog.

			 *

			 * @since 3.5.0

			 *

			 * @param int $blog_id Blog ID.

			 */

			do_action( 'make_delete_blog', $blog_id );

		} else {

			/**

			 * Fires when the 'deleted' status is removed from a blog.

			 *

			 * @since 3.5.0

			 *

			 * @param int $blog_id Blog ID.

			 */

			do_action( 'make_undelete_blog', $blog_id );

		}

	}

	if ( isset( $details['public'] ) ) {

		switch_to_blog( $blog_id );

		update_option( 'blog_public', $details['public'] );