added server storage

BetterIServ.Mobile/src/app/api/storage.service.ts

@@ -0,0 +1,33 @@
+import { Injectable } from '@angular/core';
+import {HttpClient} from "@angular/common/http";
+import {firstValueFrom} from "rxjs";
+import {environment} from "../../environments/environment";
+import {IServService} from "./iserv.service";
+
+@Injectable({
+  providedIn: 'root'
+})
+export class StorageService {
+
+  constructor(private client: HttpClient) {}
+
+  public async getItem<T>(item: string, isJson: boolean = true): Promise<T> {
+    try {
+      const data = await firstValueFrom(this.client.get<{value: string}>(environment.backend + `/storage?user=${IServService.userdata.username}&item=${item}`));
+
+      if (isJson) return JSON.parse(data.value) as T;
+      return data.value as T;
+    }catch {
+      return undefined;
+    }
+  }
+
+  public async setItem(item: string, value: any) {
+    await firstValueFrom(this.client.post(environment.backend + `/storage?user=${IServService.userdata.username}&item=${item}`, value));
+  }
+
+  public async clear() {
+    await firstValueFrom(this.client.delete(environment.backend + `/storage?user=${IServService.userdata.username}`));
+  }
+
+}