Use parsed TradingMode from config

freqtrade/data/history/idatahandler.py

@@ -17,7 +17,7 @@ from freqtrade import misc
 from freqtrade.configuration import TimeRange
 from freqtrade.constants import ListPairsWithTimeframes, TradeList
 from freqtrade.data.converter import clean_ohlcv_dataframe, trades_remove_duplicates, trim_dataframe
-from freqtrade.enums import CandleType
+from freqtrade.enums import CandleType, TradingMode
 from freqtrade.exchange import timeframe_to_seconds
 
 
@@ -39,7 +39,8 @@ class IDataHandler(ABC):
         raise NotImplementedError()
 
     @abstractclassmethod
-    def ohlcv_get_available_data(cls, datadir: Path, trading_mode: str) -> ListPairsWithTimeframes:
+    def ohlcv_get_available_data(
+            cls, datadir: Path, trading_mode: TradingMode) -> ListPairsWithTimeframes:
         """
         Returns a list of all pairs with ohlcv data available in this datadir
         :param datadir: Directory to search for ohlcv files