public AddItemToCartResponse Handle(AddItemToCartRequest input)
{
var cart = _cartRepository.Get(input.CartId);
if (cart is null)
{
throw new NotFoundException("Couldn't find the cart");
}
var item = _itemRepository.Get(input.ItemId);
if (item is null)
{
throw new NotFoundException("Couldn't find the item");
}
var rules = _itemSaleRuleRepository.GetForItem(item.Id);
rules.Validate(cart, item, input.Quantity);
var cartItem = cart.AddItemToCart(item, input.Quantity);
_cartRepository.Save(cart);
_listener.OnAdded(cart, item, cartItem);
// ...
return(new AddItemToCartResponse());
}
public Unit Handle(AddItemToCartRequest input)
{
var maybeCart = _cartRepository.Get(input.CartId);
var cart = maybeCart.ValueOr(
() => throw new DomainException(new ErrorDetail.NotFound("Couldn't find the cart")));
var item = _itemRepository.Get(input.ItemId);
if (item is null)
{
throw new DomainException(new ErrorDetail.NotFound("Couldn't find the item"));
}
var rules = _itemSaleRuleRepository.GetForItem(item.Id);
rules.Validate(cart, item, input.Quantity);
var cartItem = cart.AddItemToCart(item, input.Quantity);
_cartRepository.Save(cart);
_listener.OnAdded(cart, item, cartItem);
return(Unit.Instance);
}
public Either <Error, Unit> Handle(AddItemToCartRequest input)
{
var maybeCart = _cartRepository.Get(input.CartId);
if (!maybeCart.TryGetValue(out var cart))
{
return(Either.Left <Error, Unit>(new Error.NotFound("Couldn't find the cart")));
}
var item = _itemRepository.Get(input.ItemId);
if (item is null)
{
return(Either.Left <Error, Unit>(new Error.NotFound("Couldn't find the item")));
}
var rules = _itemSaleRuleRepository.GetForItem(item.Id);
var rulesResult = rules.Validate(cart, item, input.Quantity);
if (rulesResult is Either <Error, Unit> .Left)
{
return(rulesResult);
}
var cartItemResult = cart.AddItemToCart(item, input.Quantity);
if (cartItemResult is Either <Error, CartItem> .Left cartItemErrorResult)
{
return(Either.Left <Error, Unit>(cartItemErrorResult.Value));
}
_cartRepository.Save(cart);
_listener.OnAdded(cart, item, ((Either <Error, CartItem> .Right)cartItemResult).Value);
return(Either.Right <Error, Unit>(Unit.Instance));
}
public Either <Error, Unit> Handle(AddItemToCartRequest input)
{
var maybeCart = _cartRepository.Get(input.CartId);
if (!maybeCart.TryGetValue(out var cart))
{
return(Either.Left <Error, Unit>(new Error.NotFound("Couldn't find the cart")));
}
var item = _itemRepository.Get(input.ItemId);
if (item is null)
{
return(Either.Left <Error, Unit>(new Error.NotFound("Couldn't find the item")));
}
var rules = _itemSaleRuleRepository.GetForItem(item.Id);
return(rules
.Validate(cart, item, input.Quantity)
.FlatMap(_ => cart.AddItemToCart(item, input.Quantity))
.Do(_ => _cartRepository.Save(cart))
.Do(cartItem => _listener.OnAdded(cart, item, cartItem))
.Map(_ => Unit.Instance));
}
public Result <Unit> Handle(AddItemToCartRequest input)
{
var maybeCart = _cartRepository.Get(input.CartId);
if (!maybeCart.TryGetValue(out var cart))
{
return(Result <Unit> .Error.NotFound.New("Couldn't find the cart"));
}
var maybeItem = _itemRepository.Get(input.ItemId);
if (!maybeItem.TryGetValue(out var item))
{
return(Result <Unit> .Error.NotFound.New("Couldn't find the item"));
}
var rules = _itemSaleRuleRepository.GetForItem(item.Id);
var rulesResult = rules.Validate(cart, item, input.Quantity);
if (rulesResult is Result <Unit> .Error)
{
return(rulesResult);
}
var cartItemResult = cart.AddItemToCart(item, input.Quantity);
if (cartItemResult is Result <CartItem> .Error cartItemErrorResult)
{
return(cartItemErrorResult.AsErrorOf <Unit>());
}
_cartRepository.Save(cart);
_listener.OnAdded(cart, item, cartItemResult.Value);
return(Result <Unit> .Success.New(Unit.Instance));
}