add logging config, related to #8

src/dopt_basics/logging.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import dataclasses as dc
 import logging
 import logging.handlers
 from pathlib import Path
@@ -21,33 +22,41 @@ NULL_HANDLER = logging.NullHandler()
 BASE_LOGGER = logging.getLogger("dopt_base")
 
 
+@dc.dataclass(eq=False, slots=True, kw_only=True)
+class LoggingConfig:
+    enable_stderr: bool
+    enable_file: bool = False
+    logging_dir: Path | None = None
+    log_filename: str = LOG_FILENAME
+    file_max_bytes: int = 5_242_880
+    file_backup_count: int = 1
+
+
 def setup_logging(
-    enable_stderr: bool,
+    config: LoggingConfig,
-    enable_file: bool = False,
-    logging_dir: Path | None = None,
-    log_filename: str = LOG_FILENAME,
 ) -> None:
     # ** formatters
     logging.Formatter.converter = gmtime
     LOGGER_ALL_FORMATER = logging.Formatter(fmt=LOG_FMT, datefmt=LOG_DATE_FMT)
     # ** handlers
-    if enable_stderr:
+    if config.enable_stderr:
         logger_all_handler_stderr = logging.StreamHandler()
         logger_all_handler_stderr.setLevel(DEFAULT_LOGLEVEL_STDERR)
         logger_all_handler_stderr.setFormatter(LOGGER_ALL_FORMATER)
     else:  # pragma: no cover
         logger_all_handler_stderr = NULL_HANDLER
 
-    if enable_file and logging_dir is None:
+    if config.enable_file and config.logging_dir is None:
         raise ValueError("Logging path must be provided to write to log file")
-    elif enable_file:
+    elif config.enable_file:
-        assert logging_dir
+        if config.logging_dir is None:
-        log_file_path = logging_dir / log_filename
+            raise ValueError("Logging directory must be provided if file writing is selected")
+        log_file_path = config.logging_dir / config.log_filename
         logger_all_handler_file = logging.handlers.RotatingFileHandler(
             log_file_path,
             encoding="utf-8",
-            maxBytes=5_242_880,
+            maxBytes=config.file_max_bytes,
-            backupCount=1,
+            backupCount=config.file_backup_count,
             delay=True,
         )
         logger_all_handler_file.setLevel(DEFAULT_LOGLEVEL_FILE)