feat: timestamped log files per startup, auto-cleanup to 20 max

utils/logger.py

@@ -1,18 +1,37 @@
 import logging
 import os
 import sys
+import uuid
+from datetime import datetime
 from logging.handlers import RotatingFileHandler
 from pathlib import Path
 
 LOG_DIR = Path(__file__).resolve().parent.parent / "logs"
 LOG_DIR.mkdir(exist_ok=True)
 
-LOG_FILE = LOG_DIR / "turbosu.log"
 LOG_FORMAT = logging.Formatter(
     "[%(asctime)s] [%(levelname)s] [%(name)s] %(message)s",
     datefmt="%Y-%m-%d %H:%M:%S",
 )
 
+MAX_LOG_FILES = 20
+
+
+def _new_log_path() -> Path:
+    ts = datetime.now().strftime("%Y%m%d_%H%M%S")
+    uid = uuid.uuid4().hex[:6]
+    return LOG_DIR / f"turbosu_{ts}_{uid}.log"
+
+
+def _cleanup_old_logs():
+    logs = sorted(LOG_DIR.glob("turbosu_*.log*"), key=lambda p: p.stat().st_mtime)
+    while len(logs) > MAX_LOG_FILES:
+        oldest = logs.pop(0)
+        try:
+            oldest.unlink()
+        except OSError:
+            pass
+
 
 def setup_logger(name: str, level: int = logging.DEBUG) -> logging.Logger:
     logger = logging.getLogger(name)
@@ -20,8 +39,9 @@ def setup_logger(name: str, level: int = logging.DEBUG) -> logging.Logger:
     logger.propagate = False
 
     if not logger.handlers:
+        log_file = _new_log_path()
         fh = RotatingFileHandler(
-            LOG_FILE, maxBytes=10 * 1024 * 1024, backupCount=20, encoding="utf-8"
+            log_file, maxBytes=10 * 1024 * 1024, backupCount=20, encoding="utf-8"
         )
         fh.setLevel(logging.DEBUG)
         fh.setFormatter(LOG_FORMAT)
@@ -32,6 +52,8 @@ def setup_logger(name: str, level: int = logging.DEBUG) -> logging.Logger:
         ch.setFormatter(LOG_FORMAT)
         logger.addHandler(ch)
 
+        _cleanup_old_logs()
+
     return logger