✨ frontend add

frontend/portal/src/libs/Storage/emailStorage.ts

@@ -0,0 +1,66 @@
+import { loginFormType } from '@components/Auth/LoginForm'
+import { LocalStorageWorker } from './index'
+
+// custom class for store emails in local storage
+export class EmailStorage {
+  private storageWorker: LocalStorageWorker
+
+  // main key
+  private storageKey: string
+
+  // login info data
+  private loginInfo: loginFormType
+
+  constructor(storageKey: string) {
+    this.storageWorker = new LocalStorageWorker()
+
+    this.storageKey = storageKey
+
+    this.loginInfo = { email: null, password: null, isRemember: false }
+
+    this.activate()
+  }
+
+  // activate custom storage for login info
+  activate() {
+    this.load()
+  }
+
+  load() {
+    var storageData = this.storageWorker.get(this.storageKey)
+
+    if (storageData != null && storageData.length > 0) {
+      var info = JSON.parse(storageData)
+      if (info) {
+        this.loginInfo = info
+      }
+    }
+  }
+
+  get() {
+    return this.loginInfo
+  }
+
+  // add new email (without duplicate)
+  set(info: loginFormType) {
+    if (info.isRemember) {
+      this.loginInfo = info
+      //  save to storage
+      this.save()
+    } else {
+      this.clear()
+    }
+  }
+
+  // clear all data about login info
+  clear() {
+    // remove with key
+    this.storageWorker.remove(this.storageKey)
+  }
+
+  // save to storage (save as JSON string)
+  save() {
+    var jsonInfo = JSON.stringify(this.loginInfo)
+    this.storageWorker.add(this.storageKey, jsonInfo)
+  }
+}