reactredux/webapi/WeatherForecast/Services/ShopItemService.cs

using Core.DomainObjects;
using Core.DomainObjects.L10n;
using Core.Enumerations;
using DataProviders;
using DomainResults.Common;
using ExtensionMethods;
using WeatherForecast.Models;
using WeatherForecast.Models.Requests;

namespace WeatherForecast.Services {

  public interface IShopItemService {
    (Guid?, IDomainResult) Post(Guid siteId, string sku, PostShopItemRequestModel requestModel);
    (GetShopItemResponseModel, IDomainResult) Get(Guid siteId, string sku, Locales locale);
    (Guid?, IDomainResult) Update(Guid siteId, string sku, PutShopItemRequestModel requestData);
    IDomainResult Delete(Guid siteId, string sku);
  }

  public class ShopItemService : IShopItemService {

    private readonly ILogger<ShopItemService> _logger;
    private readonly IShopCatalogDataProvider _shopCatalogDataProvider;
    private readonly ICategoryDataProvider _categoryDataProvider;

    public ShopItemService(
      ILogger<ShopItemService> logger,
      IShopCatalogDataProvider shopCatalogDataProvider,
      ICategoryDataProvider categoryDataProvider
    ) {
      _logger = logger;
      _shopCatalogDataProvider = shopCatalogDataProvider;
      _categoryDataProvider = categoryDataProvider;
    }

    public (Guid?, IDomainResult) Post(Guid siteId, string sku, PostShopItemRequestModel requestModel) {
      var (_, getResult) = _shopCatalogDataProvider.Get(siteId, sku);
      if (getResult.IsSuccess)
        return IDomainResult.Failed<Guid?>();

      var item = requestModel.ToDomainObject();

      item.SiteId = siteId;
      item.Sku = sku;

      // TODO: should be recovered from users by jwt
      item.Author = "fdc5aa50-ee68-4bae-a8e6-b8ae2c258f60".ToGuid();

      // TODO: should be placed to object storage
      item.Images = new List<Image>() {
        new Image {
          Src = "https://dummyimage.com/450x300/dee2e6/6c757d.jpg",
          L10n = new List<ImageL10n> {
            new ImageL10n {
            Locale = Locales.Us,
            Alt = "..."
            }
          }
        }
      };

      // TODO: default value shoud not be hardcoded by database id
      item.Categories ??= new List<Guid> { "e154e33f-3cc7-468d-bb66-e0390ddb9ae0".ToGuid() };

      var (id, insertResult) = _shopCatalogDataProvider.Insert(item);

      if (!insertResult.IsSuccess)
        return IDomainResult.Failed<Guid?>();

      return IDomainResult.Success(id);
    }

    public (GetShopItemResponseModel?, IDomainResult) Get(Guid siteId, string sku, Locales locale) {
      var (item, result) = _shopCatalogDataProvider.Get(siteId, sku);

      if (!result.IsSuccess || item == null)
        return (null, result);

      var categories = new List<Category>();
      foreach (var catId in item.Categories) {
        var (category, getCategoryResult) = _categoryDataProvider.Get(catId, siteId);
        if (!getCategoryResult.IsSuccess || category == null)
          return (null, getCategoryResult);

        categories.Add(category);
      }

      return IDomainResult.Success(new GetShopItemResponseModel(item, categories, locale));
    }

    public (Guid?, IDomainResult) Update(Guid siteId, string sku, PutShopItemRequestModel requestData) {
      var (item, getResult) = _shopCatalogDataProvider.Get(siteId, sku);
      if (!getResult.IsSuccess || item == null)
        return (null, getResult);

      // construct domain object from model
      var newItem = requestData.ToDomainObject();
      newItem.Id = item.Id;
      newItem.SiteId = siteId;
      newItem.Sku = sku;
      newItem.Created = item.Created;
      newItem.Author = item.Author;

      if (!item.Equals(newItem)) {
        var (id, updateResult) = _shopCatalogDataProvider.Update(newItem);
        if (!updateResult.IsSuccess || id == null)
          return (null, updateResult);
      }

      return IDomainResult.Success(item.Id);
    }

    public IDomainResult Delete(Guid siteId, string sku) {
      var (item, getResult) = _shopCatalogDataProvider.Get(siteId, sku);
      if (!getResult.IsSuccess || item == null)
        return getResult;

      var result = _shopCatalogDataProvider.Delete(item.Id);
      if (!result.IsSuccess)
        return result;

      return IDomainResult.Success();
    }

  }
}