Add "defaultCandletype"

freqtrade/enums/candletype.py

@@ -12,9 +12,16 @@ class CandleType(str, Enum):
     # TODO-lev: not sure this belongs here, as the datatype is really different
     FUNDING_RATE = "funding_rate"
 
-    @classmethod
-    def from_string(cls, value: str) -> 'CandleType':
+    @staticmethod
+    def from_string(value: str) -> 'CandleType':
         if not value:
             # Default to spot
             return CandleType.SPOT_
         return CandleType(value)
+
+    @staticmethod
+    def get_default(trading_mode: str) -> 'CandleType':
+        if trading_mode == 'futures':
+            return CandleType.FUTURES
+        # TODO-lev: The below should be SPOT, not SPOT_
+        return CandleType.SPOT_