From b56e988fc98af42dd9c79376bd30643e07459e00 Mon Sep 17 00:00:00 2001
From: c9s <yoan@maicoin.com>
Date: Mon, 10 Jan 2022 13:49:36 +0800
Subject: [PATCH] support: fix triggerEMA check

---
 pkg/strategy/support/strategy.go | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/pkg/strategy/support/strategy.go b/pkg/strategy/support/strategy.go
index 96237353f..20134db03 100644
--- a/pkg/strategy/support/strategy.go
+++ b/pkg/strategy/support/strategy.go
@@ -363,14 +363,23 @@ func (s *Strategy) Run(ctx context.Context, orderExecutor bbgo.OrderExecutor, se
 			return
 		}
 
-		s.Notify("Found %s support: the close price %f is below trigger EMA %f and above long term EMA %f and volume %f > minimum volume %f",
-			s.Symbol,
-			closePrice.Float64(),
-			s.triggerEMA.Last(),
-			s.longTermEMA.Last(),
-			kline.Volume,
-			s.MinVolume.Float64(),
-			kline)
+		if s.triggerEMA != nil && s.longTermEMA != nil {
+			s.Notify("Found %s support: the close price %f is below trigger EMA %f and above long term EMA %f and volume %f > minimum volume %f",
+				s.Symbol,
+				closePrice.Float64(),
+				s.triggerEMA.Last(),
+				s.longTermEMA.Last(),
+				kline.Volume,
+				s.MinVolume.Float64(),
+				kline)
+		} else {
+			s.Notify("Found %s support: the close price %f and volume %f > minimum volume %f",
+				s.Symbol,
+				closePrice.Float64(),
+				kline.Volume,
+				s.MinVolume.Float64(),
+				kline)
+		}
 
 		quantity, err := s.calculateQuantity(session, types.SideTypeBuy, closePrice, kline.Volume)
 		if err != nil {