BuddyPress move new commented activity stream to top

move-bp-comments-to-top.php

<?php
/**
 * Sort last commented posts to the top of activity line
 * Source: http://techiescircle.com/move-new-commented-activity-stream-to-top/
 */

function yzc_bp_activity_bump_comment_posted( $comment_id, $params ) {

    global $bp, $wpdb;

    extract( $params, EXTR_SKIP );

    $activity_parent = bp_activity_get_specific( array( 'activity_ids' => $activity_id ) );

    if ( !$activity_parent = $activity_parent['activities'][0] ) {
        return;
    }


    if ( yzc_bp_activity_bump_denied_activity_type_check( $activity_parent->type ) ){
        return;
    }

    if ( ! yzc_bp_activity_bump_denied_user_check() ) {
        return;
    }

    //be nice and save the date_recorded
    if ( ! bp_activity_get_meta( $activity_id, 'bp_activity_bump_date_recorded') ) {
        bp_activity_update_meta( $activity_id, 'bp_activity_bump_date_recorded', $activity_parent->date_recorded );
    }

    $q = $wpdb->prepare( "UPDATE {$bp->activity->table_name} SET date_recorded = %s WHERE id = %d",gmdate( "Y-m-d H:i:s" ), $activity_id );

    // Update Date.
    $wpdb->query( $q );

}

add_action( 'bp_activity_comment_posted', 'yzc_bp_activity_bump_comment_posted', 1, 2 );

/**
 * Show Last Updated Comment Time.
 **/
function yzc_bp_activity_bump_time_since( $content, $activity ) {
    global $bp;

    if ( ! $bumpdate = bp_activity_get_meta( $activity->id, 'bp_activity_bump_date_recorded') )
        return $content;
    $content = '<span class="time-since">' . sprintf( __( ' updated %s', 'bp-activity-bump' ), bp_core_time_since( $activity->date_recorded ) ) . '</span>';
    return apply_filters( 'etivite_bp_activity_bump_time_since', '<span class="time-since time-created">' . sprintf( __( ' %s', 'buddypress' ), bp_core_time_since( $bumpdate ) ) . '</span> &middot; ' . $content, $activity->date_recorded, $bumpdate, $content );
}

add_filter( 'bp_activity_time_since', 'yzc_bp_activity_bump_time_since', 1, 2 );


function yzc_bp_activity_bump_denied_activity_type_check( $type ) {
    $types = (array) maybe_unserialize( get_option( 'bp_activity_bump_denied_activity_types') );
    return in_array( $type, apply_filters( 'yzc_bp_activity_bump_denied_activity_types', $types ) );
}

function yzc_bp_activity_bump_denied_user_check() {

    global $bp;

    // All, super, wp_cap
    $types = maybe_unserialize( get_option( 'bp_activity_bump_denied_user_types') );

    if ( $types && ( $types['super_admin'] || $types['user_cap'] ) ) {
        if ( current_user_can( $types['user_cap'] ) ){
            return true;
        }

        if ( $types['super_admin'] && $bp->loggedin_user->is_super_admin ) {
            return true;
        }

        return false;
    }

    return true;
}