bp_core_admin_components_settings_handler()

function bp_core_admin_components_settings_handler() {

	// Bail if not saving settings.
	if ( ! isset( $_POST['bp-admin-component-submit'] ) )
		return;

	// Bail if nonce fails.
	if ( ! check_admin_referer( 'bp-admin-component-setup' ) )
		return;

	$action = ( isset( $_POST['action'] ) && '' !== $_POST['action'] ) ? $_POST['action'] : $_POST['action2'];
	if ( '' === $action )
		return;

	// Settings form submitted, now save the settings. First, set active components.
	if ( isset( $_POST['bp_components'] ) ) {

		// Load up BuddyPress.
		$bp = buddypress();

		// Save settings and upgrade schema.
		require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
		require_once( $bp->plugin_dir . '/bp-core/admin/bp-core-admin-schema.php' );

		$current_components = $bp->active_components;
		$submitted          = stripslashes_deep( $_POST['bp_components'] );
		$required           = bp_core_admin_get_components( 'required' );

		if ( 'inactive' === $action ) {
			$submitted = array_diff_key( $current_components, $submitted );
			if ( empty( $submitted ) ) {
				foreach ( $required as $key => $req ) {
					$submitted[$key] = '1';
				}
			} else {
				foreach ( $required as $key => $req ) {
					$submitted[$key] = '1';
				}
			}

			$bp->active_components = $submitted;
			$uninstalled_components = array_diff_key($current_components, $bp->active_components);

			bp_core_install( $bp->active_components );
			bp_core_add_page_mappings( $bp->active_components );
			bp_update_option( 'bp-active-components', $bp->active_components );

			bp_core_uninstall( $uninstalled_components );

		} else {

			if ( empty( $submitted ) ) {
				foreach ( $required as $key => $req ) {
					$submitted[$key] = '1';
				}
			} else {
				foreach ( $required as $key => $req ) {
					$submitted[$key] = '1';
				}
			}

			$bp->active_components = $submitted;
			$uninstalled_components = array_diff_key($current_components, $bp->active_components);

			bp_core_install( $bp->active_components );
			bp_core_add_page_mappings( $bp->active_components );
			bp_update_option( 'bp-active-components', $bp->active_components );

			bp_core_uninstall( $uninstalled_components );
		}


	}

	// Assign the Forum Page to forum component.
	if ( array_key_exists( 'forums', $bp->active_components ) ) {
		$option = bp_get_option('_bbp_root_slug_custom_slug', '' );
		if ( '' === $option ) {
			$default_title = bp_core_get_directory_page_default_titles();
			$title         = ( isset( $default_title[ 'new_forums_page' ] ) ) ? $default_title[ 'new_forums_page' ] : '';

			$new_page = array(
				'post_title'     => $title,
				'post_status'    => 'publish',
				'post_author'    => bp_loggedin_user_id(),
				'post_type'      => 'page',
				'comment_status' => 'closed',
				'ping_status'    => 'closed',
			);

			$page_id                    = wp_insert_post( $new_page );

			bp_update_option('_bbp_root_slug_custom_slug', $page_id );
			$slug = get_post_field( 'post_name', $page_id );
			bp_update_option('_bbp_root_slug', $slug);
		}
	}

	$current_action = 'all';
	if ( isset( $_GET['action'] ) && in_array( $_GET['action'], array( 'active', 'inactive' ) ) ) {
		$current_action = $_GET['action'];
	}

	// Where are we redirecting to?
	$base_url = bp_get_admin_url( add_query_arg( array( 'page' => 'bp-components', 'action' => $current_action, 'updated' => 'true', 'added' => 'true' ), 'admin.php' ) );

	// Redirect.
	wp_redirect( $base_url );
	die();
}