Migrating Vue components to React and stores refactoring (#585)

Signed-off-by: Roman <ixrock@gmail.com>

Co-authored-by: Sebastian Malton <sebastian@malton.name>
Co-authored-by: Sebastian Malton <smalton@mirantis.com>
Co-authored-by: Lauri Nevala <lauri.nevala@gmail.com>
Co-authored-by: Alex Andreev <alex.andreev.email@gmail.com>

src/common/utils/cloneJson.ts

@@ -0,0 +1,5 @@
+// Clone json-serializable object
+
+export function cloneJsonObject<T = object>(obj: T): T {
+  return JSON.parse(JSON.stringify(obj));
+}

src/common/utils/defineGlobal.ts

@@ -0,0 +1,12 @@
+// Setup variable in global scope (top-level object)
+// Global type definition must be added separately to `mocks.d.ts` in form:
+// declare const __globalName: any;
+
+export function defineGlobal(propName: string, descriptor: PropertyDescriptor) {
+  const scope = typeof global !== "undefined" ? global : window;
+  if (scope.hasOwnProperty(propName)) {
+    console.info(`Global variable "${propName}" already exists. Skipping.`)
+    return;
+  }
+  Object.defineProperty(scope, propName, descriptor);
+}

src/common/utils/getRandId.ts

@@ -0,0 +1,6 @@
+// Create random system name
+
+export function getRandId({ prefix = "", suffix = "", sep = "_" } = {}) {
+  const randId = () => Math.random().toString(16).substr(2);
+  return [prefix, randId(), suffix].filter(s => s).join(sep);
+}

src/common/utils/index.ts

@@ -3,3 +3,5 @@
 export * from "./base64"
 export * from "./camelCase"
 export * from "./splitArray"
+export * from "./getRandId"
+export * from "./cloneJson"

src/common/utils/kubeconfig.ts

@@ -1,16 +0,0 @@
-import { app, remote } from "electron"
-import  { ensureDirSync, writeFileSync } from "fs-extra"
-import * as path from "path"
-
-// Writes kubeconfigs to "embedded" store, i.e. .../Lens/kubeconfigs/
-export function writeEmbeddedKubeConfig(clusterId: string, kubeConfig: string): string {
-  // This can be called from main & renderer
-  const a = (app || remote.app)
-  const kubeConfigBase = path.join(a.getPath("userData"), "kubeconfigs")
-  ensureDirSync(kubeConfigBase)
-
-  const kubeConfigFile = path.join(kubeConfigBase, clusterId)
-  writeFileSync(kubeConfigFile, kubeConfig)
-
-  return kubeConfigFile
-}

src/common/utils/singleton.ts

@@ -0,0 +1,28 @@
+/**
+ * Narrowing class instances to the one.
+ * Use "private" or "protected" modifier for constructor (when overriding) to disallow "new" usage.
+ *
+ * @example
+ *  const usersStore: UsersStore = UsersStore.getInstance();
+ */
+
+type Constructor<T = {}> = new (...args: any[]) => T;
+
+class Singleton {
+  private static instances = new WeakMap<object, Singleton>();
+
+  // todo: improve types inferring
+  static getInstance<T>(...args: ConstructorParameters<Constructor<T>>): T {
+    if (!Singleton.instances.has(this)) {
+      Singleton.instances.set(this, Reflect.construct(this, args));
+    }
+    return Singleton.instances.get(this) as T;
+  }
+
+  static resetInstance() {
+    Singleton.instances.delete(this);
+  }
+}
+
+export { Singleton }
+export default Singleton;