<?php

/**
 * Blogs component functions.
 *
 * @package BuddyPress
 * @subpackage BlogsFunctions
 */
// Exit if accessed directly
if (!defined('ABSPATH'))
    exit;

/**
 * Check whether the $bp global lists an activity directory page.
 *
 * @since BuddyPress (1.5.0)
 *
 * @global BuddyPress $bp The one true BuddyPress instance.
 *
 * @return bool True if set, false if empty.
 */
function bp_blogs_has_directory() {
    global $bp;

    return (bool) !empty($bp->pages->blogs->id);
}

/**
 * Retrieve a set of blogs
 *
 * @see BP_Blogs_Blog::get() for a description of arguments and return value.
 *
 * @param array $args {
 *     Arguments are listed here with their default values. For more
 *     information about the arguments, see {@link BP_Blogs_Blog::get()}.
 *     @type string $type Default: 'active'.
 *     @type int|bool $user_id Default: false.
 *     @type string|bool $search_terms Default: false.
 *     @type int $per_page Default: 20.
 *     @type int $page Default: 1.
 *     @type boolean $show_hidden Default: false.
 * }
 * @return array See {@link BP_Blogs_Blog::get()}.
 * @return type
 * @version 2, stergatu, added show_hidden
 */
function bp_blogs_get_blogs($args = '') {

    $defaults = array(
        'type' => 'active', // active, alphabetical, newest, or random
        'user_id' => false, // Pass a user_id to limit to only blogs that this user has privilages higher than subscriber on
        'search_terms' => false, // Limit to blogs that match these search terms
        'per_page' => 20, // The number of results to return per page
        'page' => 1, // The page to return if limiting per page
        'show_hidden' => false
    );

    $params = wp_parse_args($args, $defaults);
    extract($params, EXTR_SKIP);

    $args_n = array('type' => $type, 'per_page' => $per_page, 'page' => $page, 'user_id' => $user_id, 'search_terms' => $search_terms, 'show_hidden' => $show_hidden);

    return apply_filters('bp_blogs_get_blogs', BP_Blogs_Blog::get($args_n), $params);
}

/**
 * Populate the BP blogs table with existing blogs.
 *
 * @global object $bp BuddyPress global settings
 * @global object $wpdb WordPress database object
 * @uses get_users()
 * @uses bp_blogs_record_blog()
 */
function bp_blogs_record_existing_blogs() {
    global $bp, $wpdb;

    // Truncate user blogs table and re-record.
    $wpdb->query("TRUNCATE TABLE {$bp->blogs->table_name}");

    if (is_multisite()) {
        $blog_ids = $wpdb->get_col($wpdb->prepare("SELECT blog_id FROM {$wpdb->base_prefix}blogs WHERE mature = 0 AND spam = 0 AND deleted = 0 AND site_id = %d", $wpdb->siteid));
    } else {
        $blog_ids = 1;
    }

    if (!empty($blog_ids)) {
        foreach ((array) $blog_ids as $blog_id) {
            $users = get_users(array('blog_id' => $blog_id, 'fields' => 'ID'));
            $subscribers = get_users(array('blog_id' => $blog_id, 'fields' => 'ID', 'role' => 'subscriber'));

            if (!empty($users)) {
                foreach ((array) $users as $user) {
                    // Don't record blogs for subscribers
                    if (!in_array($user, $subscribers)) {
                        bp_blogs_record_blog($blog_id, $user, true);
                    }
                }
            }
        }
    }
}

/**
 * Check whether a given blog should be recorded in activity streams.
 *
 * If $user_id is provided, you can restrict site from being recordable
 * only to particular users.
 *
 * @since BuddyPress (1.7.0)
 *
 * @uses apply_filters()
 *
 * @param int $blog_id ID of the blog being checked.
 * @param int $user_id Optional. ID of the user for whom access is being checked.
 * @return bool True if blog is recordable, otherwise false.
 */
function bp_blogs_is_blog_recordable($blog_id, $user_id = 0) {

    $recordable_globally = apply_filters('bp_blogs_is_blog_recordable', true, $blog_id);

    if (!empty($user_id)) {
        $recordable_for_user = apply_filters('bp_blogs_is_blog_recordable_for_user', $recordable_globally, $blog_id, $user_id);
    } else {
        $recordable_for_user = $recordable_globally;
    }

    if (!empty($recordable_for_user)) {
        return true;
    }

    return $recordable_globally;
}

/**
 * Check whether a given blog should be tracked by the Blogs component.
 *
 * If $user_id is provided, the developer can restrict site from
 * being trackable only to particular users.
 *
 * @since BuddyPress (1.7.0)
 *
 * @uses bp_blogs_is_blog_recordable
 * @uses apply_filters()
 *
 * @param int $blog_id ID of the blog being checked.
 * @param int $user_id Optional. ID of the user for whom access is being checked.
 * @return bool True if blog is trackable, otherwise false.
 */
function bp_blogs_is_blog_trackable($blog_id, $user_id = 0) {

    $trackable_globally = apply_filters('bp_blogs_is_blog_trackable', bp_blogs_is_blog_recordable($blog_id, $user_id), $blog_id);

    if (!empty($user_id)) {
        $trackable_for_user = apply_filters('bp_blogs_is_blog_trackable_for_user', $trackable_globally, $blog_id, $user_id);
    } else {
        $trackable_for_user = $trackable_globally;
    }

    if (!empty($trackable_for_user)) {
        return $trackable_for_user;
    }

    return $trackable_globally;
}

/**
 * Make BuddyPress aware of a new site so that it can track its activity.
 *
 * @since BuddyPress (1.0.0)
 *
 * @uses BP_Blogs_Blog
 *
 * @param int $blog_id ID of the blog being recorded.
 * @param int $user_id ID of the user for whom the blog is being recorded.
 * @param bool $no_activity Optional. Whether to skip recording an activity
 *        item about this blog creation. Default: false.
 * @return bool|null Returns false on failure.
 */
function bp_blogs_record_blog($blog_id, $user_id, $no_activity = false) {

    if (empty($user_id))
        $user_id = bp_loggedin_user_id();

    // If blog is not recordable, do not record the activity.
    if (!bp_blogs_is_blog_recordable($blog_id, $user_id))
        return false;

    $name = get_blog_option($blog_id, 'blogname');
    $description = get_blog_option($blog_id, 'blogdescription');

    if (empty($name))
        return false;

    $recorded_blog = new BP_Blogs_Blog;
    $recorded_blog->user_id = $user_id;
    $recorded_blog->blog_id = $blog_id;
    $recorded_blog_id = $recorded_blog->save();
    $is_recorded = !empty($recorded_blog_id) ? true : false;

    bp_blogs_update_blogmeta($recorded_blog->blog_id, 'name', $name);
    bp_blogs_update_blogmeta($recorded_blog->blog_id, 'description', $description);
    bp_blogs_update_blogmeta($recorded_blog->blog_id, 'last_activity', bp_core_current_time());

    $is_private = !empty($_POST['blog_public']) && (int) $_POST['blog_public'] ? false : true;
    $is_private = !apply_filters('bp_is_new_blog_public', !$is_private);

    // Only record this activity if the blog is public
    if (!$is_private && !$no_activity && bp_blogs_is_blog_trackable($blog_id, $user_id)) {

        // Record this in activity streams
        bp_blogs_record_activity(array(
            'user_id' => $recorded_blog->user_id,
            'action' => apply_filters('bp_blogs_activity_created_blog_action', sprintf(__('%s created the site %s', 'buddypress'), bp_core_get_userlink($recorded_blog->user_id), '<a href="' . get_home_url($recorded_blog->blog_id) . '">' . esc_attr($name) . '</a>'), $recorded_blog, $name, $description),
            'primary_link' => apply_filters('bp_blogs_activity_created_blog_primary_link', get_home_url($recorded_blog->blog_id), $recorded_blog->blog_id),
            'type' => 'new_blog',
            'item_id' => $recorded_blog->blog_id
        ));
    }

    do_action_ref_array('bp_blogs_new_blog', array(&$recorded_blog, $is_private, $is_recorded));
}

add_action('wpmu_new_blog', 'bp_blogs_record_blog', 10, 2);

/**
 * Update blog name in BuddyPress blogmeta table.
 *
 * @global object $wpdb DB Layer.
 *
 * @param string $oldvalue Value before save. Passed by do_action() but
 *        unused here.
 * @param string $newvalue Value to change meta to.
 */
function bp_blogs_update_option_blogname($oldvalue, $newvalue) {
    global $wpdb;

    bp_blogs_update_blogmeta($wpdb->blogid, 'name', $newvalue);
}

add_action('update_option_blogname', 'bp_blogs_update_option_blogname', 10, 2);

/**
 * Update blog description in BuddyPress blogmeta table
 *
 * @global object $wpdb DB Layer.
 *
 * @param string $oldvalue Value before save. Passed by do_action() but
 *        unused here.
 * @param string $newvalue Value to change meta to.
 */
function bp_blogs_update_option_blogdescription($oldvalue, $newvalue) {
    global $wpdb;

    bp_blogs_update_blogmeta($wpdb->blogid, 'description', $newvalue);
}

add_action('update_option_blogdescription', 'bp_blogs_update_option_blogdescription', 10, 2);

/**
 * Detect a change in post status, and initiate an activity update if necessary.
 *
 * Posts get new activity updates when (a) they are being published, and (b)
 * they have not already been published. This enables proper posting for
 * regular posts as well as scheduled posts, while preventing post bumping.
 *
 * See #4090, #3746, #2546 for background.
 *
 * @since BuddyPress (1.9.0)
 *
 * @param string $new_status New status for the post.
 * @param string $old_status Old status for the post.
 * @param object $post Post data.
 */
function bp_blogs_catch_published_post($new_status, $old_status, $post) {

    // Only record published posts
    if ('publish' !== $new_status) {
        return;
    }

    // Don't record edits (publish -> publish)
    if ('publish' === $old_status) {
        return;
    }

    return bp_blogs_record_post($post->ID, $post);
}

add_action('transition_post_status', 'bp_blogs_catch_published_post', 10, 3);

/**
 * Record a new blog post in the BuddyPress activity stream.
 *
 * @param int $post_id ID of the post being recorded.
 * @param object $post The WP post object passed to the 'save_post' action.
 * @param int $user_id Optional. The user to whom the activity item will be
 *        associated. Defaults to the post_author.
 * @return bool|null Returns false on failure.
 */
function bp_blogs_record_post($post_id, $post, $user_id = 0) {
    global $bp, $wpdb;

    $post_id = (int) $post_id;
    $blog_id = (int) $wpdb->blogid;

    // If blog is not trackable, do not record the activity.
    if (!bp_blogs_is_blog_trackable($blog_id, $user_id))
        return false;

    if (!$user_id)
        $user_id = (int) $post->post_author;

    // Stop infinite loops with WordPress MU Sitewide Tags.
    // That plugin changed the way its settings were stored at some point. Thus the dual check.
    if (!empty($bp->site_options['sitewide_tags_blog'])) {
        $st_options = maybe_unserialize($bp->site_options['sitewide_tags_blog']);
        $tags_blog_id = isset($st_options['tags_blog_id']) ? $st_options['tags_blog_id'] : 0;
    } else {
        $tags_blog_id = isset($bp->site_options['tags_blog_id']) ? $bp->site_options['tags_blog_id'] : 0;
    }

    if ((int) $blog_id == $tags_blog_id && apply_filters('bp_blogs_block_sitewide_tags_activity', true))
        return false;

    // Don't record this if it's not a post
    if (!in_array($post->post_type, apply_filters('bp_blogs_record_post_post_types', array('post'))))
        return false;

    $is_blog_public = apply_filters('bp_is_blog_public', (int) get_blog_option($blog_id, 'blog_public'));

    if ('publish' == $post->post_status && empty($post->post_password)) {
        if ($is_blog_public || !is_multisite()) {

            // Record this in activity streams
            $post_permalink = add_query_arg(
                    'p', $post_id, trailingslashit(get_home_url($blog_id))
            );

            if (is_multisite())
                $activity_action = sprintf(__('%1$s wrote a new post, %2$s, on the site %3$s', 'buddypress'), bp_core_get_userlink((int) $post->post_author), '<a href="' . $post_permalink . '">' . $post->post_title . '</a>', '<a href="' . get_blog_option($blog_id, 'home') . '">' . get_blog_option($blog_id, 'blogname') . '</a>');
            else
                $activity_action = sprintf(__('%1$s wrote a new post, %2$s', 'buddypress'), bp_core_get_userlink((int) $post->post_author), '<a href="' . $post_permalink . '">' . $post->post_title . '</a>');

            // Make sure there's not an existing entry for this post (prevent bumping)
            if (bp_is_active('activity')) {
                $existing = bp_activity_get(array(
                    'filter' => array(
                        'action' => 'new_blog_post',
                        'primary_id' => $blog_id,
                        'secondary_id' => $post_id,
                    )
                ));

                if (!empty($existing['activities'])) {
                    return;
                }
            }

            $activity_content = $post->post_content;

            bp_blogs_record_activity(array(
                'user_id' => (int) $post->post_author,
                'action' => apply_filters('bp_blogs_activity_new_post_action', $activity_action, $post, $post_permalink),
                'content' => apply_filters('bp_blogs_activity_new_post_content', $activity_content, $post, $post_permalink),
                'primary_link' => apply_filters('bp_blogs_activity_new_post_primary_link', $post_permalink, $post_id),
                'type' => 'new_blog_post',
                'item_id' => $blog_id,
                'secondary_item_id' => $post_id,
                'recorded_time' => $post->post_date_gmt,
            ));
        }

        // Update the blogs last activity
        bp_blogs_update_blogmeta($blog_id, 'last_activity', bp_core_current_time());
    } else {
        bp_blogs_remove_post($post_id, $blog_id, $user_id);
    }

    do_action('bp_blogs_new_blog_post', $post_id, $post, $user_id);
}

/**
 * Record a new blog comment in the BuddyPress activity stream.
 *
 * Only posts the item if blog is public and post is not password-protected.
 *
 * @param int $comment_id ID of the comment being recorded.
 * @param bool|string $is_approved Optional. The $is_approved value passed to
 *        the 'comment_post' action. Default: true.
 * @return bool|object Returns false on failure, the comment object on success.
 */
function bp_blogs_record_comment($comment_id, $is_approved = true) {
    // Get the users comment
    $recorded_comment = get_comment($comment_id);

    // Don't record activity if the comment hasn't been approved
    if (empty($is_approved))
        return false;

    // Don't record activity if no email address has been included
    if (empty($recorded_comment->comment_author_email))
        return false;

    // Don't record activity if the comment has already been marked as spam
    if ('spam' === $is_approved)
        return false;

    // Get the user by the comment author email.
    $user = get_user_by('email', $recorded_comment->comment_author_email);

    // If user isn't registered, don't record activity
    if (empty($user))
        return false;

    // Get the user_id
    $user_id = (int) $user->ID;

    // Get blog and post data
    $blog_id = get_current_blog_id();

    // If blog is not trackable, do not record the activity.
    if (!bp_blogs_is_blog_trackable($blog_id, $user_id))
        return false;

    $recorded_comment->post = get_post($recorded_comment->comment_post_ID);

    if (empty($recorded_comment->post) || is_wp_error($recorded_comment->post))
        return false;

    // If this is a password protected post, don't record the comment
    if (!empty($recorded_comment->post->post_password))
        return false;

    // Don't record activity if the comment's associated post isn't a WordPress Post
    if (!in_array($recorded_comment->post->post_type, apply_filters('bp_blogs_record_comment_post_types', array('post'))))
        return false;

    $is_blog_public = apply_filters('bp_is_blog_public', (int) get_blog_option($blog_id, 'blog_public'));

    // If blog is public allow activity to be posted
    if ($is_blog_public) {

        // Get activity related links
        $post_permalink = get_permalink($recorded_comment->comment_post_ID);
        $comment_link = get_comment_link($recorded_comment->comment_ID);

        // Prepare to record in activity streams
        if (is_multisite())
            $activity_action = sprintf(__('%1$s commented on the post, %2$s, on the site %3$s', 'buddypress'), bp_core_get_userlink($user_id), '<a href="' . $post_permalink . '">' . apply_filters('the_title', $recorded_comment->post->post_title) . '</a>', '<a href="' . get_blog_option($blog_id, 'home') . '">' . get_blog_option($blog_id, 'blogname') . '</a>');
        else
            $activity_action = sprintf(__('%1$s commented on the post, %2$s', 'buddypress'), bp_core_get_userlink($user_id), '<a href="' . $post_permalink . '">' . apply_filters('the_title', $recorded_comment->post->post_title) . '</a>');

        $activity_content = $recorded_comment->comment_content;

        // Record in activity streams
        bp_blogs_record_activity(array(
            'user_id' => $user_id,
            'action' => apply_filters_ref_array('bp_blogs_activity_new_comment_action', array($activity_action, &$recorded_comment, $comment_link)),
            'content' => apply_filters_ref_array('bp_blogs_activity_new_comment_content', array($activity_content, &$recorded_comment, $comment_link)),
            'primary_link' => apply_filters_ref_array('bp_blogs_activity_new_comment_primary_link', array($comment_link, &$recorded_comment)),
            'type' => 'new_blog_comment',
            'item_id' => $blog_id,
            'secondary_item_id' => $comment_id,
            'recorded_time' => $recorded_comment->comment_date_gmt
        ));

        // Update the blogs last active date
        bp_blogs_update_blogmeta($blog_id, 'last_activity', bp_core_current_time());
    }

    return $recorded_comment;
}

add_action('comment_post', 'bp_blogs_record_comment', 10, 2);
add_action('edit_comment', 'bp_blogs_record_comment', 10);

/**
 * Record a user's association with a blog.
 *
 * This function is hooked to several WordPress actions where blog roles are
 * set/changed ('add_user_to_blog', 'profile_update', 'user_register'). It
 * parses the changes, and records them as necessary in the BP blog tracker.
 *
 * BuddyPress does not track blogs for Subscribers.
 *
 * @param int $user_id The ID of the user.
 * @param string|bool $role The WP role being assigned to the user
 *        ('subscriber', 'contributor', 'author', 'editor', 'administrator', or
 *        a custom role). Defaults to false.
 * @param int $blog_id Default: the current blog ID.
 * @return bool|null False on failure.
 */
function bp_blogs_add_user_to_blog($user_id, $role = false, $blog_id = 0) {
    global $wpdb;

    if (empty($blog_id)) {
        $blog_id = isset($wpdb->blogid) ? $wpdb->blogid : bp_get_root_blog_id();
    }

    if (empty($role)) {
        $key = $wpdb->get_blog_prefix($blog_id) . 'capabilities';

        $roles = bp_get_user_meta($user_id, $key, true);

        if (is_array($roles))
            $role = array_search(1, $roles);
        else
            return false;
    }

    if ($role != 'subscriber')
        bp_blogs_record_blog($blog_id, $user_id, true);
}

add_action('add_user_to_blog', 'bp_blogs_add_user_to_blog', 10, 3);
add_action('profile_update', 'bp_blogs_add_user_to_blog');
add_action('user_register', 'bp_blogs_add_user_to_blog');

/**
 * Remove a blog-user pair from BP's blog tracker.
 *
 * @param int $user_id ID of the user whose blog is being removed.
 * @param int $blog_id Optional. ID of the blog being removed. Default: current blog ID.
 */
function bp_blogs_remove_user_from_blog($user_id, $blog_id = 0) {
    global $wpdb;

    if (empty($blog_id))
        $blog_id = $wpdb->blogid;

    bp_blogs_remove_blog_for_user($user_id, $blog_id);
}

add_action('remove_user_from_blog', 'bp_blogs_remove_user_from_blog', 10, 2);

/**
 * Rehook WP's maybe_add_existing_user_to_blog with a later priority
 *
 * WordPress catches add-user-to-blog requests at init:10. In some cases, this
 * can precede BP's Blogs component. This function bumps the priority of the
 * core function, so that we can be sure that the Blogs component is loaded
 * first. See http://buddypress.trac.wordpress.org/ticket/3916.
 *
 * @since BuddyPress (1.6)
 * @access private
 */
function bp_blogs_maybe_add_user_to_blog() {
    if (!is_multisite())
        return;

    remove_action('init', 'maybe_add_existing_user_to_blog');
    add_action('init', 'maybe_add_existing_user_to_blog', 20);
}

add_action('init', 'bp_blogs_maybe_add_user_to_blog', 1);

/**
 * Remove the "blog created" item from the BP blogs tracker and activity stream.
 *
 * @param int $blog_id ID of the blog being removed.
 */
function bp_blogs_remove_blog($blog_id) {
    global $bp;

    $blog_id = (int) $blog_id;
    do_action('bp_blogs_before_remove_blog', $blog_id);

    BP_Blogs_Blog::delete_blog_for_all($blog_id);

    // Delete activity stream item
    bp_blogs_delete_activity(array('item_id' => $blog_id, 'component' => $bp->blogs->id, 'type' => 'new_blog'));

    do_action('bp_blogs_remove_blog', $blog_id);
}

add_action('delete_blog', 'bp_blogs_remove_blog');

/**
 * Remove a blog from the tracker for a specific user.
 *
 * @param int $user_id ID of the user for whom the blog is being removed.
 * @param int $blog_id ID of the blog being removed.
 */
function bp_blogs_remove_blog_for_user($user_id, $blog_id) {
    global $bp;

    $blog_id = (int) $blog_id;
    $user_id = (int) $user_id;

    do_action('bp_blogs_before_remove_blog_for_user', $blog_id, $user_id);

    BP_Blogs_Blog::delete_blog_for_user($blog_id, $user_id);

    // Delete activity stream item
    bp_blogs_delete_activity(array(
        'item_id' => $blog_id,
        'component' => $bp->blogs->id,
        'type' => 'new_blog'
    ));

    do_action('bp_blogs_remove_blog_for_user', $blog_id, $user_id);
}

add_action('remove_user_from_blog', 'bp_blogs_remove_blog_for_user', 10, 2);

/**
 * Remove a blog post activity item from the activity stream.
 *
 * @param int $post_id ID of the post to be removed.
 * @param int $blog_id Optional. Defaults to current blog ID.
 * @param int $user_id Optional. Defaults to the logged-in user ID. This param
 *        is currently unused in the function (but is passed to hooks).
 */
function bp_blogs_remove_post($post_id, $blog_id = 0, $user_id = 0) {
    global $wpdb, $bp;

    if (empty($wpdb->blogid))
        return false;

    $post_id = (int) $post_id;

    if (!$blog_id)
        $blog_id = (int) $wpdb->blogid;

    if (!$user_id)
        $user_id = bp_loggedin_user_id();

    do_action('bp_blogs_before_remove_post', $blog_id, $post_id, $user_id);

    // Delete activity stream item
    bp_blogs_delete_activity(array('item_id' => $blog_id, 'secondary_item_id' => $post_id, 'component' => $bp->blogs->id, 'type' => 'new_blog_post'));

    do_action('bp_blogs_remove_post', $blog_id, $post_id, $user_id);
}

add_action('delete_post', 'bp_blogs_remove_post');

/**
 * Remove a blog comment activity item from the activity stream.
 *
 * @param int $comment_id ID of the comment to be removed.
 */
function bp_blogs_remove_comment($comment_id) {
    global $wpdb;

    // Delete activity stream item
    bp_blogs_delete_activity(array('item_id' => $wpdb->blogid, 'secondary_item_id' => $comment_id, 'type' => 'new_blog_comment'));

    do_action('bp_blogs_remove_comment', $wpdb->blogid, $comment_id, bp_loggedin_user_id());
}

add_action('delete_comment', 'bp_blogs_remove_comment');

/**
 * When a blog comment status transition occurs, update the relevant activity's status.
 *
 * @since BuddyPress (1.6.0)
 *
 * @global object $bp BuddyPress global settings.
 *
 * @param string $new_status New comment status.
 * @param string $old_status Previous comment status.
 * @param object $comment Comment data.
 */
function bp_blogs_transition_activity_status($new_status, $old_status, $comment) {
    global $bp;

    // Check the Activity component is active
    if (!bp_is_active('activity'))
        return;

    /**
     * Activity currently doesn't have any concept of a trash, or an unapproved/approved state.
     *
     * If a blog comment transitions to a "delete" or "hold" status, delete the activity item.
     * If a blog comment transitions to trashed, or spammed, mark the activity as spam.
     * If a blog comment transitions to approved (and the activity exists), mark the activity as ham.
     * Otherwise, record the comment into the activity stream.
     */
    // This clause was moved in from bp_blogs_remove_comment() in BuddyPress 1.6. It handles delete/hold.
    if (in_array($new_status, array('delete', 'hold')))
        return bp_blogs_remove_comment($comment->comment_ID);

    // These clauses handle trash, spam, and un-spams.
    elseif (in_array($new_status, array('trash', 'spam')))
        $action = 'spam_activity';
    elseif ('approved' == $new_status)
        $action = 'ham_activity';

    // Get the activity
    $activity_id = bp_activity_get_activity_id(array('component' => $bp->blogs->id, 'item_id' => get_current_blog_id(), 'secondary_item_id' => $comment->comment_ID, 'type' => 'new_blog_comment',));

    // Check activity item exists
    if (!$activity_id) {

        // If no activity exists, but the comment has been approved, record it into the activity table.
        if ('approved' == $new_status)
            return bp_blogs_record_comment($comment->comment_ID, true);

        return;
    }

    // Create an activity object
    $activity = new BP_Activity_Activity($activity_id);
    if (empty($activity->component))
        return;

    // Spam/ham the activity if it's not already in that state
    if ('spam_activity' == $action && !$activity->is_spam) {
        bp_activity_mark_as_spam($activity);
    } elseif ('ham_activity' == $action) {
        bp_activity_mark_as_ham($activity);
    }

    // Add "new_blog_comment" to the whitelisted activity types, so that the activity's Akismet history is generated
    $comment_akismet_history = create_function('$t', '$t[] = "new_blog_comment"; return $t;');
    add_filter('bp_akismet_get_activity_types', $comment_akismet_history);

    // Save the updated activity
    $activity->save();

    // Remove the "new_blog_comment" activity type whitelist so we don't break anything
    remove_filter('bp_akismet_get_activity_types', $comment_akismet_history);
}

add_action('transition_comment_status', 'bp_blogs_transition_activity_status', 10, 3);

/**
 * Get the total number of blogs being tracked by BuddyPress.
 *
 * @return int $count Total blog count.
 */
function bp_blogs_total_blogs() {
    if (!$count = wp_cache_get('bp_total_blogs', 'bp')) {
        $blogs = BP_Blogs_Blog::get_all();
        $count = $blogs['total'];
        wp_cache_set('bp_total_blogs', $count, 'bp');
    }
    return $count;
}

/**
 * Get the total number of blogs being tracked by BP for a specific user.
 *
 * @param int $user_id ID of the user being queried. Default: on a user page,
 *        the displayed user. Otherwise, the logged-in user.
 * @param bool $show_hidden
 * @return int $count Total blog count for the user.
 * @version 2, stergatu added show_hidden
 */
function bp_blogs_total_blogs_for_user($user_id = 0, $show_hidden = false) {

    if (empty($user_id))
        $user_id = ( bp_displayed_user_id() ) ? bp_displayed_user_id() : bp_loggedin_user_id();

    if (!$count = wp_cache_get('bp_total_blogs_for_user_' . $user_id, 'bp')) {
        $count = BP_Blogs_Blog::total_blog_count_for_user($user_id, $show_hidden);
        wp_cache_set('bp_total_blogs_for_user_' . $user_id, $count, 'bp');
    }

    return $count;
}

/**
 * Remove the all data related to a given blog from the BP blogs tracker and activity stream.
 *
 * @param int $blog_id The ID of the blog to expunge.
 */
function bp_blogs_remove_data_for_blog($blog_id) {
    global $bp;

    do_action('bp_blogs_before_remove_data_for_blog', $blog_id);

    // If this is regular blog, delete all data for that blog.
    BP_Blogs_Blog::delete_blog_for_all($blog_id);

    // Delete activity stream item
    bp_blogs_delete_activity(array('item_id' => $blog_id, 'component' => $bp->blogs->id, 'type' => false));

    do_action('bp_blogs_remove_data_for_blog', $blog_id);
}

add_action('delete_blog', 'bp_blogs_remove_data_for_blog', 1);

/**
 * Get all of a user's blogs, as tracked by BuddyPress.
 *
 * @see BP_Blogs_Blog::get_blogs_for_user() for a description of parameters
 *      and return values.
 *
 * @param int $user_id See {@BP_Blogs_Blog::get_blogs_for_user()}.
 * @param bool $show_hidden See {@BP_Blogs_Blog::get_blogs_for_user()}.
 * @return array See {@BP_Blogs_Blog::get_blogs_for_user()}.
 */
function bp_blogs_get_blogs_for_user($user_id, $show_hidden = false) {
    return BP_Blogs_Blog::get_blogs_for_user($user_id, $show_hidden);
}

/**
 * Retrieve a list of all blogs.
 *
 * @see BP_Blogs_Blog::get_all() for a description of parameters and return values.
 *
 * @param int $per_page See {@BP_Blogs_Blog::get_all()}.
 * @param int $page See {@BP_Blogs_Blog::get_all()}.
 * @return array See {@BP_Blogs_Blog::get_all()}.
 * @version 2 stergatu, add $show_hidden, change $limit to $per_page
 */
function bp_blogs_get_all_blogs($per_page = null, $page = null, $show_hidden = false) {
    return BP_Blogs_Blog::get_all($per_page, $page, $show_hidden);
}

/**
 * Retrieve a random list of blogs.
 *
 * @see BP_Blogs_Blog::get() for a description of parameters and return values.
 *
 * @param int $per_page See {@BP_Blogs_Blog::get()}.
 * @param int $page See {@BP_Blogs_Blog::get()}.
 * @return array See {@BP_Blogs_Blog::get()}.
 * @version 2 stergatu  change $limit to $per_page add the way get is called
 */
function bp_blogs_get_random_blogs($per_page = null, $page = null) {
    $args = array('type' => 'random', 'per_page' => $per_page, 'page' => $page);
    return BP_Blogs_Blog::get($args);
}

/**
 * Check whether a given blog is hidden.
 *
 * @see BP_Blogs_Blog::is_hidden() for a description of parameters and return values.
 *
 * @param int $blog_id See {@BP_Blogs_Blog::is_hidden()}.
 * @return bool See {@BP_Blogs_Blog::is_hidden()}.
 */
function bp_blogs_is_blog_hidden($blog_id) {
    return BP_Blogs_Blog::is_hidden($blog_id);
}

/* * *****************************************************************************
 * Blog meta functions
 *
 * These functions are used to store specific blogmeta in one global table,
 * rather than in each blog's options table. Significantly speeds up global blog
 * queries. By default each blog's name, description and last updated time are
 * stored and synced here.
 */

/**
 * Delete a metadta from the DB for a blog.
 *
 * @global object $wpdb WordPress database access object.
 * @global object $bp BuddyPress global settings.
 *
 * @param int $blog_id ID of the blog whose metadata is being deleted.
 * @param string $meta_key Optional. The key of the metadata being deleted. If
 *        omitted, all BP metadata associated with the blog will be deleted.
 * @param string $meta_value Optional. If present, the metadata will only be
 *        deleted if the meta_value matches this parameter.
 * @return bool True on success, false on failure.
 */
function bp_blogs_delete_blogmeta($blog_id, $meta_key = false, $meta_value = false) {
    global $wpdb, $bp;

    if (!is_numeric($blog_id))
        return false;

    $meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);

    if (is_array($meta_value) || is_object($meta_value))
        $meta_value = serialize($meta_value);

    $meta_value = trim($meta_value);

    if (!$meta_key)
        $wpdb->query($wpdb->prepare("DELETE FROM {$bp->blogs->table_name_blogmeta} WHERE blog_id = %d", $blog_id));
    else if ($meta_value)
        $wpdb->query($wpdb->prepare("DELETE FROM {$bp->blogs->table_name_blogmeta} WHERE blog_id = %d AND meta_key = %s AND meta_value = %s", $blog_id, $meta_key, $meta_value));
    else
        $wpdb->query($wpdb->prepare("DELETE FROM {$bp->blogs->table_name_blogmeta} WHERE blog_id = %d AND meta_key = %s", $blog_id, $meta_key));

    wp_cache_delete('bp_blogs_blogmeta_' . $blog_id . '_' . $meta_key, 'bp');

    return true;
}

/**
 * Get metadata for a given blog.
 *
 * @since BuddyPress (1.2.0)
 *
 * @global object $wpdb WordPress database access object.
 * @global object $bp BuddyPress global settings.
 *
 * @param int $blog_id ID of the blog whose metadata is being requested.
 * @param string $meta_key Optional. If present, only the metadata matching
 *        that meta key will be returned. Otherwise, all metadata for the
 *        blog will be fetched.
 * @return mixed The meta value(s) being requested.
 */
function bp_blogs_get_blogmeta($blog_id, $meta_key = '') {
    global $wpdb, $bp;

    $blog_id = (int) $blog_id;

    if (!$blog_id)
        return false;

    if (!empty($meta_key)) {
        $meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);

        if (!$metas = wp_cache_get('bp_blogs_blogmeta_' . $blog_id . '_' . $meta_key, 'bp')) {
            $metas = $wpdb->get_col($wpdb->prepare("SELECT meta_value FROM {$bp->blogs->table_name_blogmeta} WHERE blog_id = %d AND meta_key = %s", $blog_id, $meta_key));
            wp_cache_set('bp_blogs_blogmeta_' . $blog_id . '_' . $meta_key, $metas, 'bp');
        }
    } else {
        $metas = $wpdb->get_col($wpdb->prepare("SELECT meta_value FROM {$bp->blogs->table_name_blogmeta} WHERE blog_id = %d", $blog_id));
    }

    if (empty($metas)) {
        if (empty($meta_key))
            return array();
        else
            return '';
    }

    $metas = array_map('maybe_unserialize', (array) $metas);

    if (1 == count($metas))
        return $metas[0];
    else
        return $metas;
}

/**
 * Update a piece of blog meta.
 *
 * @global object $wpdb WordPress database access object.
 * @global object $bp BuddyPress global settings.
 *
 * @param int $blog_id ID of the blog whose metadata is being updated.
 * @param string $meta_key Key of the metadata being updated.
 * @param mixed $meta_value Value to be set.
 * @return bool True on success, false on failure.
 */
function bp_blogs_update_blogmeta($blog_id, $meta_key, $meta_value) {
    global $wpdb, $bp;

    if (!is_numeric($blog_id))
        return false;

    $meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);

    if (is_string($meta_value))
        $meta_value = stripslashes(esc_sql($meta_value));

    $meta_value = maybe_serialize($meta_value);

    if (empty($meta_value))
        return bp_blogs_delete_blogmeta($blog_id, $meta_key);

    $cur = $wpdb->get_row($wpdb->prepare("SELECT * FROM {$bp->blogs->table_name_blogmeta} WHERE blog_id = %d AND meta_key = %s", $blog_id, $meta_key));

    if (!$cur)
        $wpdb->query($wpdb->prepare("INSERT INTO {$bp->blogs->table_name_blogmeta} ( blog_id, meta_key, meta_value ) VALUES ( %d, %s, %s )", $blog_id, $meta_key, $meta_value));
    else if ($cur->meta_value != $meta_value)
        $wpdb->query($wpdb->prepare("UPDATE {$bp->blogs->table_name_blogmeta} SET meta_value = %s WHERE blog_id = %d AND meta_key = %s", $meta_value, $blog_id, $meta_key));
    else
        return false;

    wp_cache_set('bp_blogs_blogmeta_' . $blog_id . '_' . $meta_key, $meta_value, 'bp');

    return true;
}

/**
 * Remove all blog associations for a given user.
 *
 * @param int $user_id ID whose blog data should be removed.
 * @return bool|null Returns false on failure.
 */
function bp_blogs_remove_data($user_id) {
    if (!is_multisite())
        return false;

    do_action('bp_blogs_before_remove_data', $user_id);

    // If this is regular blog, delete all data for that blog.
    BP_Blogs_Blog::delete_blogs_for_user($user_id);

    do_action('bp_blogs_remove_data', $user_id);
}

add_action('wpmu_delete_user', 'bp_blogs_remove_data');
add_action('delete_user', 'bp_blogs_remove_data');
add_action('bp_make_spam_user', 'bp_blogs_remove_data');