cmm: splitted commands into separate modules (and more cleanup)

chatmastermind/commands/hist.py

@@ -0,0 +1,23 @@
+import argparse
+from pathlib import Path
+from ..configuration import Config
+from ..chat import ChatDB
+from ..message import MessageFilter
+
+
+def hist_cmd(args: argparse.Namespace, config: Config) -> None:
+    """
+    Handler for the 'hist' command.
+    """
+
+    mfilter = MessageFilter(tags_or=args.or_tags,
+                            tags_and=args.and_tags,
+                            tags_not=args.exclude_tags,
+                            question_contains=args.question,
+                            answer_contains=args.answer)
+    chat = ChatDB.from_dir(Path('.'),
+                           Path(config.db),
+                           mfilter=mfilter)
+    chat.print(args.source_code_only,
+               args.with_tags,
+               args.with_files)