Activity feed email plugin

<?php
/*
Plugin Name: Add blog post to activity feed and email
Plugin URI: http://becsrivett.com
Description: Allows you to publish blog posts to the activity feed & email. Requires Buddypress group email subscription plugin
Author: Becs Rivett
Version: 1.0
Tags: buddypress, groups, blog, edit
Author URI: http://becsrivett,cin
Network: true
*/

function bp_groups_record_post( $post_id, $post, $user_id = 0 ) {
    global $bp, $wpdb;

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

    //get all the category ID's for the post
    $post_categories = wp_get_post_categories($post_id);

    foreach($post_categories as $c) {

    //get the slug for the current category
    $cat = get_category($c);
    $cat_slug = $cat->slug;

        //get group slug
        $groupr_id = groups_get_id($cat_slug);

    }

    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   = get_permalink( $post_id );

            if ( is_multisite() )
                $activity_action  = sprintf( __( '%1$s published 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 published 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(
                        'user_id'      => (int) $post->post_author,
                        'action'       => 'new_blog_post',
                        'primary_id'   => $blog_id,
                        'secondary_id' => $post_id,
                    )
                ) );

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

            $activity_content = $post->post_content;

            bp_groups_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'           => $groupr_id,
                'secondary_item_id' => $post_id,
                'recorded_time'     => $post->post_modified_gmt,
                'hide_sitewide'     => false
            ));
        }

        // Update the blogs last activity
        bp_blogs_update_blogmeta( $blog_id, 'last_activity', bp_core_current_time() );
        groups_update_last_activity ($groupr_id);

        add_filter( 'ass_this_activity_is_important', true, $type);

    } else {
        bp_blogs_remove_post( $post_id, $blog_id, $user_id );
    }

    do_action( 'bp_blogs_new_blog_post', $post_id, $post, $user_id );
}
add_action( 'save_post', 'bp_groups_record_post', 10, 2 );

/**
 * Record the activity to the actvity stream
 *
 * @since BuddyPress (1.0)
 * @package BuddyPress
 * @subpackage BlogsActivity
 * @global BuddyPress $bp
 * @param array $args
 * @return boolean
 */
function bp_groups_record_activity( $args = '' ) {
    global $bp;

    // Bail if activity is not active
    if ( ! bp_is_active( 'activity' ) )
        return false;

    $defaults = array(
        'user_id'           => bp_loggedin_user_id(),
        'action'            => '',
        'content'           => '',
        'primary_link'      => '',
        'component'         => 'groups',
        'type'              => false,
        'item_id'           => false,
        'secondary_item_id' => false,
        'recorded_time'     => bp_core_current_time(),
        'hide_sitewide'     => false
    );

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

    // Remove large images and replace them with just one image thumbnail
    if ( !empty( $content ) )
        $content = bp_activity_thumbnail_content_images( $content, $primary_link );

    if ( !empty( $action ) )
        $action = apply_filters( 'bp_blogs_record_activity_action', $action );

    if ( !empty( $content ) )
        $content = apply_filters( 'bp_blogs_record_activity_content', bp_create_excerpt( $content ), $content );

    // Check for an existing entry and update if one exists.
    $id = bp_activity_get_activity_id( array(
        'user_id'           => $user_id,
        'component'         => $component,
        'type'              => $type,
        'item_id'           => $item_id,
        'secondary_item_id' => $secondary_item_id
    ) );

    return bp_activity_add( array( 'id' => $id, 'user_id' => $user_id, 'action' => $action, 'content' => $content, 'primary_link' => $primary_link, 'component' => $component, 'type' => $type, 'item_id' => $item_id, 'secondary_item_id' => $secondary_item_id, 'recorded_time' => $recorded_time, 'hide_sitewide' => $hide_sitewide ) );

add_filter( 'ass_this_activity_is_important', true, $type);
}

?>