graycoreio/daffodil

import { isPlatformBrowser } from '@angular/common';
import {
  Injectable,
  Inject,
  PLATFORM_ID,
} from '@angular/core';

import {
  DaffPersistenceService,
  DaffPersistenceServiceToken,
  DaffServerErrorStorageService,
} from '@daffodil/core';

/**
 * The DaffCartStorageService is responsible for storing the cart id of a customer
 * in storage when necessary. For some ecommerce platforms, where cart information
 * is stored in a cookie instead of storage accessible via javsacript, this service
 * isn't explicitly necessary, so be sure to use this service only in the driver
 * layer for platforms that require it.
 */
@Injectable({
  providedIn: 'root',
  useFactory: daffCartStorageServiceFactory,
  deps: [
    PLATFORM_ID,
    DaffPersistenceServiceToken,
    DaffServerErrorStorageService,
  ],
})
export class DaffCartStorageService {
  private readonly CART_STORAGE_ID = 'DAFF_CART_ID';

  constructor(private storageService: DaffPersistenceService) {}

  getCartId(): string {
    return this.storageService.getItem(this.CART_STORAGE_ID);
  }

  setCartId(value: string): void {
    this.storageService.setItem(this.CART_STORAGE_ID, value);
  }

  removeCartId(): void {
    this.storageService.removeItem(this.CART_STORAGE_ID);
  }
}

/**
 * The factory that describe construction of a DaffCartStorageService
 */
export function daffCartStorageServiceFactory(
  platformId: string,
  persistenceService: DaffPersistenceService,
  serverStorage: DaffServerErrorStorageService) {
  return isPlatformBrowser(platformId)
    ? new DaffCartStorageService(persistenceService)
    : new DaffCartStorageService(serverStorage);
}