Total document

src/app/store/total-document.service.ts

@@ -0,0 +1,43 @@
+import { Injectable } from '@angular/core';
+import { localstoreService } from './localstore.service'
+import { AES, enc, SHA1 }  from  'crypto-js'
+
+@Injectable({
+  providedIn: 'root'
+})
+export class TotalDocumentService {
+
+  private _count = 0
+  // local storage keyName
+  private keyName: string; 
+
+  constructor() {
+    this.keyName = (SHA1(this.constructor.name)).toString()
+
+    setTimeout(()=> {
+      let restore = localstoreService.get(this.keyName, {})
+      this._count = restore.count || 0
+    }, 10)
+
+  }
+
+  get count() {
+    return this._count
+  }
+
+  resetCount(value) {
+    this._count = value
+  }
+
+  saveCount() {
+    setTimeout(()=> {
+      localstoreService.set(this.keyName, {
+        count: this._count
+      })
+    }, 10)
+  }
+
+}
+
+
+export let TotalDocumentStore = new TotalDocumentService()