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app/logging_config.py

@@ -0,0 +1,12 @@
+import logging
+from logging.handlers import RotatingFileHandler
+from pathlib import Path
+
+def configure_logging(app):
+    log_dir = Path('instance')
+    log_dir.mkdir(exist_ok=True)
+    handler = RotatingFileHandler(log_dir / 'app.log', maxBytes=1_000_000, backupCount=5)
+    handler.setFormatter(logging.Formatter('%(asctime)s %(levelname)s [%(name)s] %(message)s'))
+    app.logger.setLevel(app.config['LOG_LEVEL'])
+    if not app.logger.handlers:
+        app.logger.addHandler(handler)