progress. Initial untested version

lib/tools/filetools.py

@@ -2,7 +2,7 @@ import os
 import glob
 from typing import Dict, List, Tuple
 # ---
-from cvttpy_tools.config import CvttAppConfig
+from cvttpy_tools.config import Config
 # ---
 from cvttpy_trading.trading.instrument import ExchangeInstrument
 
@@ -10,13 +10,13 @@ DayT = str
 DataFileNameT = str
 
 def resolve_datafiles(
-    config: Dict, date_pattern: str, instruments: List[ExchangeInstrument]
+    config: Config, date_pattern: str, instruments: List[ExchangeInstrument]
 ) -> List[Tuple[DayT, DataFileNameT]]:
     resolved_files: List[Tuple[DayT, DataFileNameT]] = []
     for exch_inst in instruments:
         pattern = date_pattern
         inst_type = exch_inst.user_data_.get("instrument_type", "?instrument_type?")
-        data_dir = config["market_data_loading"][inst_type]["data_directory"]
+        data_dir = config.get_value(f"market_data_loading/{inst_type}/data_directory")
         if "*" in pattern or "?" in pattern:
             # Handle wildcards
             if not os.path.isabs(pattern):