simplify strategy registration api

pkg/bbgo/config_test.go

@@ -8,7 +8,7 @@ import (
 )
 
 func init() {
-	RegisterExchangeStrategy("test", &TestStrategy{})
+	RegisterStrategy("test", &TestStrategy{})
 }
 
 type TestStrategy struct {

pkg/bbgo/environment.go

@@ -15,15 +15,16 @@ import (
 )
 
 var LoadedExchangeStrategies = make(map[string]SingleExchangeStrategy)
-
-func RegisterExchangeStrategy(key string, configmap SingleExchangeStrategy) {
-	LoadedExchangeStrategies[key] = configmap
-}
-
 var LoadedCrossExchangeStrategies = make(map[string]CrossExchangeStrategy)
 
-func RegisterCrossExchangeStrategy(key string, configmap CrossExchangeStrategy) {
-	LoadedCrossExchangeStrategies[key] = configmap
+func RegisterStrategy(key string, s interface{}) {
+	switch d := s.(type) {
+	case SingleExchangeStrategy:
+		LoadedExchangeStrategies[key] = d
+
+	case CrossExchangeStrategy:
+		LoadedCrossExchangeStrategies[key] = d
+	}
 }
 
 // Environment presents the real exchange data layer

pkg/strategy/buyandhold/strategy.go

@@ -11,7 +11,7 @@ import (
 )
 
 func init() {
-	bbgo.RegisterExchangeStrategy("buyandhold", &Strategy{})
+	bbgo.RegisterStrategy("buyandhold", &Strategy{})
 }
 
 type Strategy struct {

pkg/strategy/pricealert/strategy.go

@@ -9,7 +9,7 @@ import (
 )
 
 func init() {
-	bbgo.RegisterExchangeStrategy("pricealert", &Strategy{})
+	bbgo.RegisterStrategy("pricealert", &Strategy{})
 }
 
 type Strategy struct {

pkg/strategy/skeleton/strategy.go

@@ -10,7 +10,7 @@ import (
 )
 
 func init() {
-	bbgo.RegisterExchangeStrategy("skeleton", &Strategy{})
+	bbgo.RegisterStrategy("skeleton", &Strategy{})
 }
 
 type Strategy struct {

pkg/strategy/swing/strategy.go

@@ -12,7 +12,7 @@ import (
 )
 
 func init() {
-	bbgo.RegisterExchangeStrategy("swing", &Strategy{})
+	bbgo.RegisterStrategy("swing", &Strategy{})
 }
 
 type Strategy struct {

pkg/strategy/xpuremaker/strategy.go

@@ -13,7 +13,7 @@ import (
 )
 
 func init() {
-	bbgo.RegisterExchangeStrategy("xpuremaker", &Strategy{})
+	bbgo.RegisterStrategy("xpuremaker", &Strategy{})
 }
 
 type Strategy struct {