Storage Helper

class StorageHelper {
  private storage: Storage;
  private tempStorage: Record<string, string> = {};
  public isStorageAvailable: boolean;

  constructor(storage: "sessionStorage" | "localStorage") {
    this.storage = window[storage];
    this.isStorageAvailable = this.checkIfStorageAvailable();
  }

  private checkIfStorageAvailable() {
    try {
      const test = "__storage_test__";
      this.storage.setItem(test, test);
      this.storage.removeItem(test);
      return true;
    } catch (e) {
      return false;
    }
  }

  public setItem(key: string, value: string) {
    if (this.isStorageAvailable) {
      this.storage.setItem(key, value);
    } else {
      this.tempStorage[key] = value;
    }
  }

  public getItem(key: string) {
    if (this.isStorageAvailable) {
      return this.storage.getItem(key);
    } else {
      return this.tempStorage[key];
    }
  }

  public removeItem(key: string) {
    if (this.isStorageAvailable) {
      this.storage.removeItem(key);
    } else {
      delete this.tempStorage[key];
    }
  }

  public clear() {
    if (this.isStorageAvailable) {
      this.storage.clear();
    } else {
      this.tempStorage = {};
    }
  }
}

export const sessionStorageHelper = new StorageHelper("sessionStorage");
export const localStorageHelper = new StorageHelper("localStorage");