Make reasonable orders

util/order.go

@@ -6,7 +6,7 @@ import (
 	"math"
 )
 
-const TradingRange = .01
+const TradingRange = .02
 
 func NewOrder(
 	m sentio.Market,
@@ -36,14 +36,14 @@ func NewOrder(
 	opts.StopLoss = sentio.ToFixed(rm.StopLoss(opts.Symbol, bid), 2)
 
 	// Prevent orders those have too small expected profit
-	if opts.TakeProfit < bid*(1+TradingRange) {
+	if opts.TakeProfit < bid+TradingRange {
 		err = sentio.ErrLowTakeProfit
 		return
 	}
 
 	// Prevent cases when order will be closed ASAP they were opened.
 	// Also, Alpaca requires at least 0.01 gap against base_price
-	if opts.StopLoss > bid*(1-TradingRange) {
+	if opts.StopLoss > bid-TradingRange {
 		err = sentio.ErrHighStoploss
 		return
 	}