@kinvolk/headlamp-plugin/lib/helpers/recentClusters.js

The needed infrastructure for building Headlamp plugins.

/*
 * Copyright 2025 The Kubernetes Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const recentClustersStorageKey = 'recent_clusters';
/**
 * Adds the cluster name to the list of recent clusters in localStorage.
 *
 * @param cluster - the cluster to add to the list of recent clusters. Can be the name, or a Cluster object.
 * @returns void
 */
export function setRecentCluster(cluster) {
    const recentClusters = getRecentClusters();
    const clusterName = typeof cluster === 'string' ? cluster : cluster.name;
    const currentClusters = recentClusters.filter(name => name !== clusterName);
    const newClusters = [clusterName, ...currentClusters].slice(0, 3);
    localStorage.setItem(recentClustersStorageKey, JSON.stringify(newClusters));
}
/**
 * @returns the list of recent clusters from localStorage.
 */
export function getRecentClusters() {
    const currentClustersStr = localStorage.getItem(recentClustersStorageKey) || '[]';
    const recentClusters = JSON.parse(currentClustersStr);
    if (!Array.isArray(recentClusters)) {
        return [];
    }
    return recentClusters;
}