BP_REST_Groups_Details_Endpoint::get_item( WP_REST_Request $request )

	public function get_item( $request ) {

		global $bp;

		$retval = array();
		$group  = $this->groups_endpoint->get_group_object( $request );

		if ( empty( $group->id ) ) {
			$retval = new WP_Error(
				'bp_rest_group_invalid_id',
				__( 'Invalid group ID.', 'buddyboss' ),
				array(
					'status' => 404,
				)
			);
		}

		/**
		 * Store temporary variable
		 */
		$url     = ( '/' . bp_get_groups_root_slug() . '/' . bp_get_group_slug( $group ) );
		$tempurl = ( ! empty( $_SERVER['REQUEST_URI'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '' );
		$tmp_bp  = $bp;

		/**
		 * Group navigation tabs creation start
		 *
		 * Groups Navigation tab only setup on group page request so for fetch group tabs we need set group url as `REQUEST_URI` forcefully and
		 * Once our job done switch back to original url.
		 * With below process BuddyPress state might be change so we need to rest it once our job done.
		 *
		 * After set Group url forcefully we need to re-execute core hook which load component and setup tabs for given group.
		 */
		$_SERVER['REQUEST_URI'] = $url;

		// Fixes for the phpunit.
		add_filter( 'bp_loggedin_user_id', array( $this, 'bp_rest_get_displayed_user' ), 999 );
		add_filter( 'bp_displayed_user_id', array( $this, 'bp_rest_get_displayed_user' ), 999 );

		remove_action( 'bp_init', 'bp_register_taxonomies', 2 );
		remove_action( 'bp_init', 'bp_register_post_types', 2 );
		remove_action( 'bp_init', 'bp_setup_title', 8 );
		remove_action( 'bp_init', 'bp_core_load_admin_bar_css', 12 );
		remove_action( 'bp_init', 'bp_add_rewrite_tags', 20 );
		remove_action( 'bp_init', 'bp_add_rewrite_rules', 30 );
		remove_action( 'bp_init', 'bp_add_permastructs', 40 );
		remove_action( 'bp_init', 'bp_init_background_updater', 50 );
		remove_all_actions( 'bp_actions' );

		do_action( 'bp_init' );
		// phpcs:ignore
		do_action( 'bp_ld_sync/init' ); // We should remove when platform load learndash extention on bp_init.
		do_action( 'bp_actions' );

		add_action( 'bp_init', 'bp_register_taxonomies', 2 );
		add_action( 'bp_init', 'bp_register_post_types', 2 );
		add_action( 'bp_init', 'bp_setup_title', 8 );
		add_action( 'bp_init', 'bp_core_load_admin_bar_css', 12 );
		add_action( 'bp_init', 'bp_add_rewrite_tags', 20 );
		add_action( 'bp_init', 'bp_add_rewrite_rules', 30 );
		add_action( 'bp_init', 'bp_add_permastructs', 40 );
		add_action( 'bp_init', 'bp_init_background_updater', 50 );

		$group_slug = $group->slug;

		$group_nav = buddypress()->groups->nav;
		bp_nouveau_set_nav_item_order( $group_nav, bp_nouveau_get_appearance_settings( 'group_nav_order' ), $group_slug );

		$navigation  = array();
		$default_tab = 'members';

		if ( function_exists( 'bp_nouveau_get_appearance_settings' ) ) {
			$default_tab = bp_nouveau_get_appearance_settings( 'group_default_tab' );
		}

		$nav_items = $group_nav->get_secondary(
			array(
				'parent_slug'     => $group_slug,
				'user_has_access' => true,
			)
		);

		if ( ! empty( $nav_items ) ) {
			foreach ( $nav_items as $nav ) {
				$nav = $nav->getArrayCopy();

				if ( 'public' !== $group->status && $nav['slug'] === 'courses' && ( ! groups_is_user_member( bp_loggedin_user_id(), $group->id ) && ! bp_current_user_can( 'bp_moderate' ) ) ) {
					continue;
				}

				$name = $nav['name'];
				$id   = $nav['slug'];

				// remove the count numbers.
				$name = preg_replace( '/^(.*)(<(.*)<\/(.*)>)/', '$1', $name );
				$name = trim( $name );

				$tab = array(
					'id'              => $id,
					'title'           => $name,
					'count'           => $this->bp_rest_get_nav_count( $group, $nav ),
					'position'        => $nav['position'],
					'default'         => false,
					'user_has_access' => $nav['user_has_access'],
					'link'            => $nav['link'],
					'children'        => '',
				);

				if ( $default_tab === $nav['slug'] ) {
					$tab['default'] = true;
				}

				$parent_slug = $group_slug;

				if ( 'admin' === $nav['slug'] ) {
					$parent_slug .= '_manage';
				} elseif ( 'invite' === $nav['slug'] ) {
					$parent_slug .= '_invite';
				} elseif ( 'photos' === $nav['slug'] ) {
					$parent_slug .= '_media';
				} elseif ( 'members' === $nav['slug'] ) {
					$parent_slug .= '_members';
				}

				$sub_navs = array();

				if ( $group_slug !== $parent_slug ) {
					$sub_items = $group_nav->get_secondary(
						array(
							'parent_slug'     => $parent_slug,
							'user_has_access' => true,
						)
					);

					if ( ! empty( $sub_items ) ) {
						foreach ( $sub_items as $sub_nav ) {
							$sub_nav = $sub_nav->getArrayCopy();

							$sub_name = $sub_nav['name'];
							$sub_id   = $sub_nav['slug'];

							// remove the count numbers.
							$sub_name = preg_replace( '/^(.*)(<(.*)<\/(.*)>)/', '$1', $sub_name );
							$sub_name = trim( $sub_name );

							$sub_navs[] = array(
								'id'              => $sub_id,
								'title'           => $sub_name,
								'count'           => $this->bp_rest_get_nav_count( $group, $sub_nav ),
								'position'        => $sub_nav['position'],
								'default'         => false,
								'user_has_access' => $sub_nav['user_has_access'],
								'link'            => $sub_nav['link'],
								'children'        => '',
							);
						}
					}
				}

				$tab['children'] = $sub_navs;
				$navigation[]    = apply_filters( 'bp_rest_group_tab_' . $id, $tab, $nav );
			}
		}

		$retval['tabs'] = $navigation;

		// Fixes for the phpunit.
		remove_filter( 'bp_displayed_user_id', array( $this, 'bp_rest_get_displayed_user' ), 999 );
		remove_filter( 'bp_loggedin_user_id', array( $this, 'bp_rest_get_displayed_user' ), 999 );

		/**
		 * Group navigation tabs creation End
		 *
		 * Switching back to original `REQUEST_URI` and BuddyPress stat.
		 */
		$_SERVER['REQUEST_URI'] = $tempurl;
		$bp                     = $tmp_bp;

		$response = rest_ensure_response( $retval );

		/**
		 * Fires after a list of groups details is fetched via the REST API.
		 *
		 * @param WP_REST_Response $response The response data.
		 * @param WP_REST_Request  $request  The request sent to the API.
		 *
		 * @since 0.1.0
		 */
		do_action( 'bp_rest_groups_get_item', $response, $request );

		return $response;
	}