public async Task <Result> UpdateProductAsync(
ShoppingCartRequestModel model, string userId)
{
var productId = model.ProductId;
var requestQuantity = model.Quantity;
var productQuantity = await this.GetProductQuantityById(productId);
if (productQuantity < requestQuantity)
{
return(NotEnoughProductsMessage);
}
var shoppingCartProduct = await this.FindByProductAndUserAsync(
productId,
userId);
if (shoppingCartProduct == null)
{
return(InvalidErrorMessage);
}
shoppingCartProduct.Quantity = requestQuantity;
await this.Data.SaveChangesAsync();
return(Result.Success);
}
public async Task <Result> AddProductAsync(
ShoppingCartRequestModel model, string userId)
{
var productId = model.ProductId;
var requestQuantity = model.Quantity;
var productQuantity = await this.GetProductQuantityById(productId);
if (productQuantity < requestQuantity)
{
return(NotEnoughProductsMessage);
}
var shoppingCart = await this
.All()
.FirstOrDefaultAsync(c => c.UserId == userId);
shoppingCart ??= new ShoppingCart
{
UserId = userId
};
var shoppingCartProduct = new ShoppingCartProduct
{
ShoppingCart = shoppingCart,
ProductId = productId,
Quantity = requestQuantity
};
await this.Data.AddAsync(shoppingCartProduct);
await this.Data.SaveChangesAsync();
return(Result.Success);
}
private async Task OnSubmitAsync(int id)
{
var cartRequest = new ShoppingCartRequestModel
{
ProductId = id,
Quantity = 1
};
await this.ShoppingCartsService.AddProduct(cartRequest);
this.NavigationManager.NavigateTo("/cart", forceLoad: true);
}
private async Task AddToCart(int id)
{
var cartRequest = new ShoppingCartRequestModel
{
ProductId = id,
Quantity = 1
};
var result = await this.ShoppingCartsService.AddProduct(cartRequest);
if (!result.Succeeded)
{
this.ToastService.ShowError(result.Errors.First());
}
else
{
this.NavigationManager.NavigateTo("/cart", forceLoad: true);
}
}
public async Task <ActionResult> UpdateProduct(
ShoppingCartRequestModel model)
=> await this.shoppingCarts
.UpdateProductAsync(model, this.currentUser.UserId)
.ToActionResult();