Precompiled Azure Functions Revisited

ProductService.cs

  public class ProductService
  {
    ...
	
    public async Task<ProductModel> GetAsync(string productId)
    {
      var id = Guid.Parse(productId);

      return await this.GetAsync(id).ConfigureAwait(false);
    }

    public async Task<ProductModel> GetAsync(Guid productId)
    {
      var product = await this._context.Products
                              .Select(
                                  p => new ProductModel()
                                       {
                                         ProductId = p.ProductId,
                                         Name = p.Name,
                                         Description = p.Description,
                                         UnitPrice = p.UnitPrice
                                       })
                              .SingleOrDefaultAsync(p => p.ProductId == productId)
                              .ConfigureAwait(false);

      return product;
    }

    public async Task<int> SaveAsync(ProductModel model)
    {
      var now = DateTimeOffset.UtcNow;

      var product = await this._context.Products
                              .SingleOrDefaultAsync(p => p.ProductId == model.ProductId)
                              .ConfigureAwait(false);

      if (product == null)
      {
        product = new Product() { ProductId = Guid.NewGuid(), DateCreated = now };
      }

      product.Name = model.Name;
      product.Description = model.Description;
      product.UnitPrice = model.UnitPrice;
      product.DateUpdated = now;

      this._context.Products.Add(product);

      var result = await this._context.SaveChangesAsync().ConfigureAwait(false);

      return result;
    }
	
	...
  }