Implement new mapping format

src/toldg/models.py

@@ -49,18 +49,14 @@ class Config(BaseModel):
 
     input_directory: Path
     mappings_file: Path
-    descriptions_file: Optional[Path] = None
     output_file: Path = Path("output.ldg")
     csv_configs: List[CsvConfig]
     categories: List[str]
-    commodities: List[str]
     find_duplicates: bool = False
 
 
 class Transaction(BaseModel):
-    """
-    Class for ledger transaction to render into ldg file.
-    """
+    """Class for ledger transaction to render into ldg file."""
 
     class Config:
         extra = "forbid"
@@ -74,3 +70,16 @@ class Transaction(BaseModel):
     description: str
     csv_file: str
     row: str
+    narration: Optional[str] = None
+    payee: Optional[str] = None
+
+
+class Mapping(BaseModel):
+    """Class for transaction mapping from mappings file."""
+
+    class Config:
+        extra = "forbid"
+
+    account2: str
+    narration: Optional[str] = None
+    payee: Optional[str] = None