public IDomainEventCollection Credit(decimal amount, CanCreditAccount canCreditAccount)
{
Contract.Requires(canCreditAccount != null);
Contract.Ensures(Contract.Result <IDomainEventCollection>() != null);
string declinationReason;
if (canCreditAccount(this, amount, out declinationReason))
{
Balance += amount;
var creditApplied = new CreditApplied(Identity, amount, Balance);
if (Overdrawn)
{
return(new DomainEventCollection(this, new Collection <IDomainEvent>
{
creditApplied,
new CreditOverdrawn(Identity, Balance)
}));
}
return(new DomainEventCollection(this, creditApplied));
}
return(new DomainEventCollection(this, new CreditDeclined(Identity, amount, Balance, declinationReason)));
}
public void Handle(CreditApplied message)
{
balance += message.Amount;
Console.WriteLine();
Console.WriteLine($"CreditApplied: ${message.Amount:0.00}");
Console.WriteLine($"Balance: ${balance:0.00}");
}
private IEnumerable <SqlNonQueryCommand> CreditAppliedHandler(CreditApplied @event)
{
var result = new List <SqlNonQueryCommand>();
var lastAccount = @event.Account.Split(":").Last();
var lastAccountPrefix = lastAccount.Split("|").First();
var lastAccountId = lastAccount.Split("|").Last();
if (lastAccountPrefix == "R")
{
var penUltimateAccount = @event.Account.Split(":").Reverse().Skip(1).First();
var penultimateAccountId = penUltimateAccount.Split("|").Last();
var command = Sql.NonQueryStatement(
@"declare @Amount int = (select top 1 Amount FROM [OnHandInventoryView] where skuId = @SkuId and ReservationId = @ReservationId and location = @Location)
UPDATE [OnHandInventoryView] SET [Amount] = @Amount - @ReservedAmount WHERE SkuId = @SkuId and ReservationId = @ReservationId and location = @Location",
new
{
SkuId = Sql.UniqueIdentifier(@event.SkuId),
ReservedAmount = Sql.Int(@event.Amount),
Location = Sql.VarChar(penultimateAccountId, 50),
ReservationId = Sql.UniqueIdentifier(Guid.Parse(lastAccountId))
});
result.Add(command);
}
if (lastAccountPrefix == "WL")
{
var command = Sql.NonQueryStatement(
@"declare @Amount int = (select top 1 Amount FROM [OnHandInventoryView] where skuId = @SkuId and ReservationId IS NULL and location = @Location)
UPDATE [OnHandInventoryView] SET [Amount] = @Amount - @AmountToAppend WHERE SkuId = @SkuId and ReservationId IS NULL and Location = @Location",
new
{
SkuId = Sql.UniqueIdentifier(@event.SkuId),
AmountToAppend = Sql.Int(@event.Amount),
Location = Sql.VarChar(lastAccountId, 50)
});
result.Add(command);
}
return(result);
}
private static void CreditApplied(MemoryCache cache, CreditApplied message)
{
var account = Account.Parse(message.Account);
if (!account.ContainsComponent <WarehouseLocationComponent>())
{
return;
}
var accountId = account.GetId();
var id = StockLinePartId.NewId(message.SkuId, accountId, message.SkuMetadata);
if (cache.TryGetValue(id, out StockLine stockLine))
{
stockLine.Amount -= message.Amount;
stockLine.NetWeight = cache.Get <Sku>(message.SkuId).GetNetWeight() * stockLine.Amount;
if (stockLine.Amount == 0)
{
cache.Remove(id);
}
}
}
private void Apply(CreditApplied @event)
{
Balance += @event.Amount;
}
public void Handle(CreditApplied message)
{
}
private void When(CreditApplied domainEvent)
{
Balance = domainEvent.NewBalance;
}