xprofile_admin_manage_field( int $group_id, int|null $field_id = null )

function xprofile_admin_manage_field( $group_id, $field_id = null ) {
	global $wpdb, $message, $groups;

	$bp = buddypress();

	if ( is_null( $field_id ) ) {
		$field = new BP_XProfile_Field();
		$new = true;
	} else {
		$field = xprofile_get_field( $field_id );
		$new = false;
	}

	$field->group_id = $group_id;

	if ( isset( $_POST['saveField'] ) ) {

		// Check nonce
		check_admin_referer( 'bp_xprofile_admin_field', 'bp_xprofile_admin_field' );

		if ( BP_XProfile_Field::admin_validate() ) {
			$field->is_required = $_POST['required'];
			$field->type        = $_POST['fieldtype'];
			$field->name        = $_POST['title'];


			if ( 'socialnetworks' === $field->type ) {

				if ( true === $new ) {
					$disabled_social_networks = false;
					$exists_social_networks   = $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->prefix}bp_xprofile_fields a WHERE parent_id = 0 AND type = 'socialnetworks' " );
					if ( $exists_social_networks > 0 ) {
						$disabled_social_networks = true;
					}

					if ( true === $disabled_social_networks ) {
						$message = __( 'You can only have one instance of the "Social Network" profile field.','buddyboss' );
						$type    = 'error';
						$field->render_admin_form( $message, $type );

						return false;
					}
				}
			}

			if ( ! empty( $_POST['description'] ) ) {
				$field->description = $_POST['description'];
			} else {
				$field->description = '';
			}

			if ( ! empty( $_POST["sort_order_{$field->type}"] ) ) {
				$field->order_by = $_POST["sort_order_{$field->type}"];
			}

			$field->field_order = $wpdb->get_var( $wpdb->prepare( "SELECT field_order FROM {$bp->profile->table_name_fields} WHERE id = %d", $field_id ) );
			if ( ! is_numeric( $field->field_order ) || is_wp_error( $field->field_order ) ) {
                //cloned fields should not be considered when determining the max order of fields in given group
                $cloned_field_ids = $wpdb->get_col( $wpdb->prepare(
                    "SELECT f.id FROM {$bp->profile->table_name_fields} AS f JOIN {$bp->profile->table_name_meta} AS fm ON f.id = fm.object_id "
                    . " WHERE f.group_id = %d AND fm.meta_key = '_is_repeater_clone' AND fm.meta_value = 1 ",
                    $group_id
                ) );

                if ( !empty( $cloned_field_ids ) ) {
                    $field->field_order = (int) $wpdb->get_var( $wpdb->prepare( "SELECT max(field_order) FROM {$bp->profile->table_name_fields} WHERE group_id = %d AND id NOT IN ( ". implode( ',', $cloned_field_ids ) ." )", $group_id ) );
                } else {
                    $field->field_order = (int) $wpdb->get_var( $wpdb->prepare( "SELECT max(field_order) FROM {$bp->profile->table_name_fields} WHERE group_id = %d", $group_id ) );
                }
				$field->field_order++;
			}

			// For new profile fields, set the $field_id. For existing profile
			// fields, this will overwrite $field_id with the same value.
			$field_id = $field->save();

			if ( empty( $field_id ) ) {
				$message = __( 'There was an error saving the field. Please try again.', 'buddyboss' );
				$type    = 'error';
			} else {
				$message = __( 'The field was saved successfully.', 'buddyboss' );
				$type    = 'updated';

				// Set profile types.
				if ( isset( $_POST['has-member-types'] ) ) {
					$member_types = array();
					if ( isset( $_POST['member-types'] ) ) {
						$member_types = stripslashes_deep( $_POST['member-types'] );
					}

					$field->set_member_types( $member_types );
				}

				// Validate default visibility.
				if ( ! empty( $_POST['default-visibility'] ) && in_array( $_POST['default-visibility'], wp_list_pluck( bp_xprofile_get_visibility_levels(), 'id' ) ) ) {
					bp_xprofile_update_field_meta( $field_id, 'default_visibility', $_POST['default-visibility'] );
				}

				// Validate custom visibility.
				if ( ! empty( $_POST['allow-custom-visibility'] ) && in_array( $_POST['allow-custom-visibility'], array( 'allowed', 'disabled' ) ) ) {
					bp_xprofile_update_field_meta( $field_id, 'allow_custom_visibility', $_POST['allow-custom-visibility'] );
				}

				// Update alternate name.
                $alternate_name = isset( $_POST['title_secondary'] ) ? $_POST['title_secondary'] : '';
                bp_xprofile_update_field_meta( $field_id, 'alternate_name', $alternate_name );

				// Validate signup.
				if ( ! empty( $_POST['signup-position'] ) ) {
					bp_xprofile_update_field_meta( $field_id, 'signup_position', (int) $_POST['signup-position'] );
				} else {
					bp_xprofile_delete_meta( $field_id, 'field', 'signup_position' );
				}

				if ( $field->type_obj->do_settings_section() ) {
					$settings = isset( $_POST['field-settings'] ) ? wp_unslash( $_POST['field-settings'] ) : array();
					$field->admin_save_settings( $settings );
				}

				/**
				 * Fires at the end of the process to save a field for a user, if successful.
				 *
				 * @since BuddyPress 1.0.0
				 *
				 * @param BP_XProfile_Field $field Current BP_XProfile_Field object.
				 */
				do_action( 'xprofile_fields_saved_field', $field );

				$groups = bp_xprofile_get_groups();
			}

			$field->render_admin_form( $message, $type );

			// Users Admin URL
			$users_url = bp_get_admin_url( 'admin.php' );
			$redirect = add_query_arg( array(
				'page'     => 'bp-profile-setup',
				'mode'     => 'edit_field',
				'group_id' => (int) $group_id,
				'type' => $type,
				'field_id' => (int) $field_id
			), $users_url );

			wp_safe_redirect( $redirect );
			exit();

		} else {
			$field->render_admin_form( $message );
		}
	} else {
		$field->render_admin_form();
	}
}