public async Task <IActionResult> Handle(Request request, CancellationToken cancellationToken = default)
{
if (request is null)
{
return(BadRequest());
}
DiagnosticsContext.Set("CartId", request.CartId);
DiagnosticsContext.Set("ProductId", request.ProductId);
DiagnosticsContext.Set("Increment", request.Increment);
CartEntity cart = await Context.Carts.AsNoTracking().SingleOrDefaultAsync(c => c.Id == request.CartId, cancellationToken);
if (cart is null)
{
Logger.LogTrace("Cart not found");
string message = Localizer.GetStringSafe("CartNotFound", request.CartId);
return(NotFoundProblem(message));
}
ItemEntity item = await Context.Items.AsTracking().SingleOrDefaultAsync(c => c.CartId == request.CartId && c.ProductId == request.ProductId, cancellationToken);
if (item is null)
{
item = Mapper.Map <ItemEntity>(request);
item.CreatedOn = Clock.UtcNow;
item.ModifiedOn = Clock.UtcNow;
DiagnosticsContext.Set("NewQuantity", item.Quantity);
DiagnosticsContext.Set("PreviousQuantity", 0);
Context.Items.Add(item);
}
else
{
int existingQuantity = item.Quantity;
item.Quantity += request.Increment;
item.ModifiedOn = Clock.UtcNow;
DiagnosticsContext.Set("NewQuantity", item.Quantity);
DiagnosticsContext.Set("PreviousQuantity", existingQuantity);
}
await Context.SaveChangesAsync(cancellationToken);
var response = Mapper.Map <Response>(item);
return(Ok(response));
}
public async Task <IActionResult> Handle(CancellationToken cancellationToken = default)
{
CartEntity cart = new()
{
CreatedOn = Clock.UtcNow
};
Context.Add(cart);
await Context.SaveChangesAsync(cancellationToken);
DiagnosticsContext.Set("CartId", cart.Id);
return(CreatedAtAction(nameof(GetCartById.Handle), nameof(GetCartById), new { cart.Id }, cart));
}
}
public async Task <IActionResult> Handle(Guid id, CancellationToken cancellationToken = default)
{
DiagnosticsContext.Set("CartId", id);
CartEntity cart = await Context.Carts.AsNoTracking().SingleOrDefaultAsync(c => c.Id == id, cancellationToken);
if (cart is null)
{
Logger.LogTrace("Cart not found");
string message = Localizer.GetStringSafe("CartNotFound", id);
return(NotFoundProblem(message));
}
ItemEntity[] items = await Context.Items.AsNoTracking().Where(i => i.CartId == cart.Id).ToArrayAsync(cancellationToken);
var response = Mapper.Map <Response>(cart);
response.Items = items;
DiagnosticsContext.Set("CartItemCount", items.Length);
return(Ok(response));
}