Method SimulateOrder

engine/rpcserver.go:1235–1278

SimulateOrder simulates an order specified by exchange, currency pair and asset type

(_ context.Context, r *gctrpc.SimulateOrderRequest)

// SimulateOrder simulates an order specified by exchange, currency pair and asset
// type
func (s *RPCServer) SimulateOrder(_ context.Context, r *gctrpc.SimulateOrderRequest) (*gctrpc.SimulateOrderResponse, error) {
	if r.Pair == nil {
		return nil, errCurrencyPairUnset
	}

	exch, err := s.GetExchangeByName(r.Exchange)
	if err != nil {
		return nil, err
	}

	p := currency.NewPairWithDelimiter(r.Pair.Base, r.Pair.Quote, r.Pair.Delimiter)

	err = checkParams(r.Exchange, exch, asset.Spot, p)
	if err != nil {
		return nil, err
	}

	o, err := exch.GetCachedOrderbook(p, asset.Spot)
	if err != nil {
		return nil, err
	}

	buy := strings.EqualFold(r.Side, order.Buy.String()) || strings.EqualFold(r.Side, order.Bid.String())

	result, err := o.SimulateOrder(r.Amount, buy)
	if err != nil {
		return nil, err
	}

	var resp gctrpc.SimulateOrderResponse
	for x := range result.Orders {
		resp.Orders = append(resp.Orders, &gctrpc.OrderbookItem{
			Price:  result.Orders[x].Price,
			Amount: result.Orders[x].Amount,
		})
	}

	resp.Amount = result.Amount
	resp.MaximumPrice = result.MaximumPrice
	resp.MinimumPrice = result.MinimumPrice
	resp.PercentageGainLoss = result.PercentageGainOrLoss
	resp.Status = result.Status
	return &resp, nil
}

// WhaleBomb finds the amount required to reach a specific price target for a given exchange, pair
// and asset type