#BP Admin's taking control of user activation process

<?php
/*
Plugin Name: BP Register Control
Plugin URI: http://imath.owni.fr/
Description: redirect new user's notification to admin so he can control if the account will be activated or not.
Version: 1.0
Author: imath
Author URI: http://imath.owni.fr
License: GPLv2
Network: true
*/


function bp_rc_ask_wp_signups( $activate_url, $key=false ) {
    global $wpdb;
    if( empty( $key ) ) {
        $parse_key = explode( '?key=', $activate_url);
        $key = $parse_key[1];
    }

    $user = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE activation_key = %s", $key) );

    return $user;
}

add_filter( 'bp_core_signup_send_validation_email_to', 'bp_rc_redirect_to_admin', 1, 2 );
add_filter( 'bp_core_signup_send_validation_email_subject', 'bp_rc_subject_redirect_to_admin', 1, 2 );
add_filter( 'bp_core_signup_send_validation_email_message', 'bp_rc_message_redirect_to_admin', 1, 3 );

add_filter( 'bp_core_activation_signup_user_notification_to',   'bp_rc_redirect_to_admin', 1, 5 );
add_filter( 'bp_core_activation_signup_user_notification_subject', 'bp_rc_subject_redirect_to_admin', 1, 5);
add_filter( 'bp_core_activation_signup_user_notification_message', 'bp_rc_message_redirect_to_admin', 1, 5 );

function bp_rc_redirect_to_admin( $user_email, $user_id ) {
    return get_option( 'admin_email' );
}

function bp_rc_subject_redirect_to_admin( $subject, $user_id  ) {
    $blogname = ( '' == get_option( 'blogname' ) ) ? __( 'BuddyPress', 'buddypress' ) : esc_html( get_option( 'blogname' ) );

    return sprintf(__('[%s] New User Registration'), $blogname);
}

function bp_rc_message_redirect_to_admin( $message, $user_id, $activate_url, $key = false ) {
    if ( is_multisite() )
        $user = bp_rc_ask_wp_signups( $activate_url, $key );

    else
        $user = get_userdata( $user_id );

    if( !empty( $key ) )
        $activate_url = bp_get_activation_page() . "?key=$key";

    $message =  sprintf( __("Hi %s (%s) just registered.\n\nYou can activate his account by clicking here : %s"), $user->user_login, $user->user_email, $activate_url );

    return $message;
}



add_action( 'bp_core_activated_user', 'bp_rc_send_user_account_is_activated', 1, 3 );

function bp_rc_send_user_account_is_activated( $user_id, $key, $user ) {
    // if multisite, there's allready a notification sent
    if(is_multisite())
        return false;

    $user = get_userdata( $user_id );

    $to = $user->user_email;
    $from_name = ( '' == get_option( 'blogname' ) ) ? __( 'BuddyPress', 'buddypress' ) : esc_html( get_option( 'blogname' ) );

    if( !empty( $user->display_name ) )
        $user_nick = $user->display_name;
    else
        $user_nick = ucfirst( $user->user_login );

    // edit the message below to suit your needs !
    $message = sprintf( __("Hi %s,\n\nYour are now a member of our website. Thanks for joining us !\n\n"), $user_nick );
    $message .= sprintf( __("Where to go now ?\n\nYou can log in at %s with your login (%s) and the password you registered with"), esc_html( get_option( 'siteurl' ) ), $user->user_login );
    $message .= sprintf( __("\n\nHoping to hear from you real soon :)\n\n"), esc_html( get_option( 'blogname' ) ) );

    // edit the subject below to suit your needs !
    $subject = '[' . $from_name . '] ' . __( 'Your account is now active!', 'buddypress' );


    wp_mail( $to, $subject, $message );

}

add_action('bp_after_registration_confirmed', 'bp_rc_override_bp_screen_message');

function bp_rc_override_bp_screen_message() {

    // edit the message below to suit your needs
    $message = "Thanks for registrating, your account will soon be activated by the Admin of this website..";
    ?>
    <script type="text/javascript">

    jQuery(document).ready(function($){
        $('#signup_form p').html('<?php echo $message;?>');
    });

    </script>
    <?php
}
?>