bp_nouveau_ajax_activity_update_privacy()

function bp_nouveau_ajax_activity_update_privacy() {
	if ( ! bp_is_post_request() ) {
		wp_send_json_error();
	}

	// Nonce check!
	if ( empty( $_POST['nonce'] ) || ! wp_verify_nonce( $_POST['nonce'], 'bp_nouveau_activity' ) ) {
		wp_send_json_error();
	}

	if ( empty( $_POST['privacy'] ) ) {
		wp_send_json_error();
	}

	if ( ! in_array( $_POST['privacy'], array( 'public', 'loggedin', 'onlyme', 'friends' ) ) ) {
		wp_send_json_error();
	}

	$activity = new BP_Activity_Activity( (int) $_POST['id'] );

	if ( bp_activity_user_can_delete( $activity ) ) {
		remove_action( 'bp_activity_before_save', 'bp_activity_check_moderation_keys', 2 );
		$activity->privacy = $_POST['privacy'];
		$activity->save();
		add_action( 'bp_activity_before_save', 'bp_activity_check_moderation_keys', 2 );

		wp_send_json_success( array() );
	} else {
		wp_send_json_error();
	}
}