public void IncrementAmount(AssetCost assetCost)
{
Amount += assetCost.RemainingQuantity;
PreviousCosts.Add(assetCost);
if (Amount - assetCost.RemainingQuantity < 0 && Amount >= 0)
{
ResolvedBreachCount++;
if (assetCost.Item is ITrade trade)
{
var buyText = trade.IsBuyer ? "BUY" : "SELL";
_breachLogs.Add($"debreach {trade.Time} {trade.GetTimeReadable():G} {trade.GetSymbol()} {buyText} {Name} {trade.Commission}");
}
}
}
public ImmutableArray <CapitalGain> Process(ITrade trade)
{
var baseCcy = trade.Base;
var baseAsset = GetAsset(baseCcy);
var quoteCcy = trade.Quote;
var quoteAsset = GetAsset(quoteCcy);
if (trade.IsBuyer)
{
// we are selling trade.GetQuoteQuantity of quoteAsset.
// to calculate capital gain we need to price this quantity at the time it has been bought
var proceed = _fiatConversion.GetProceed(trade);
var assetCost = new AssetCost(trade.Time, trade.Quantity, proceed / trade.Quantity, trade);
baseAsset.IncrementAmount(assetCost);
return(quoteAsset.DecrementAmount(trade.GetQuoteQuantity(), trade)
.Select(t =>
{
var multiplier = t.RemainingQuantity / trade.GetQuoteQuantity();
return new CapitalGain
{
Asset = quoteCcy,
SoldTime = trade.Time,
BoughtTime = t.Time,
Quantity = t.RemainingQuantity,
Cost = t.CostPerUnit * t.RemainingQuantity,
Proceed = proceed * multiplier,
BoughtTag = GetTag(t.Item)
};
})
.Concat(GetFeeCapitalGains(trade))
.ToImmutableArray());
}
else
{
// we are selling trade.Quantity of baseAsset.
// to calculate capital gain we need to price this quantity at the time it has been bought
var proceed = _fiatConversion.GetProceed(trade);
var assetCost = new AssetCost(trade.Time, trade.GetQuoteQuantity(), proceed / trade.GetQuoteQuantity(), trade);
quoteAsset.IncrementAmount(assetCost);
return(baseAsset.DecrementAmount(trade.Quantity, trade)
.Select(t =>
{
var multiplier = t.RemainingQuantity / trade.Quantity;
return new CapitalGain
{
Asset = baseCcy,
SoldTime = trade.Time,
BoughtTime = t.Time,
Quantity = t.RemainingQuantity,
Cost = t.CostPerUnit * t.RemainingQuantity,
Proceed = proceed * multiplier,
BoughtTag = GetTag(t.Item)
};
})
.Concat(GetFeeCapitalGains(trade))
.ToImmutableArray());
}
}