Add policy_eval.py/src/policy_eval/cli.py

policy_eval.py/src/policy_eval/cli.py

@@ -0,0 +1,71 @@
+import argparse
+import json
+import sys
+from pathlib import Path
+import logging
+from datetime import datetime
+
+from policy_eval import core
+
+
+def main() -> None:
+    """CLI entrypoint to evaluate policy changes and run backtests."""
+    parser = argparse.ArgumentParser(
+        description="Policy Change Audit CLI – prüft Policy-Konstanten und führt Backtests aus."
+    )
+    parser.add_argument(
+        "--constants",
+        required=True,
+        help="Pfad zur policy_constants.json"
+    )
+    parser.add_argument(
+        "--audit",
+        required=True,
+        help="Pfad zum fixierten Audit-Set (Verzeichnis)"
+    )
+
+    args = parser.parse_args()
+
+    logging.basicConfig(
+        level=logging.INFO,
+        format="%(asctime)s [%(levelname)s] %(message)s",
+        datefmt="%Y-%m-%d %H:%M:%S",
+    )
+    
+    constants_path = Path(args.constants)
+    audit_path = Path(args.audit)
+
+    if not constants_path.is_file():
+        logging.error(f"Policy-Konstanten-Datei nicht gefunden: {constants_path}")
+        sys.exit(1)
+
+    if not audit_path.exists():
+        logging.error(f"Audit-Set-Verzeichnis nicht gefunden: {audit_path}")
+        sys.exit(1)
+
+    try:
+        with constants_path.open('r', encoding='utf-8') as f:
+            policy_constants = json.load(f)
+    except json.JSONDecodeError as e:
+        logging.error(f"Fehler beim Lesen der Policy-Konfiguration: {e}")
+        sys.exit(1)
+
+    logging.info("Prüfe Policy-Änderungen...")
+    changed = core.check_policy_changes(policy_constants)
+
+    if changed:
+        logging.info("Änderungen erkannt. Starte Backtest...")
+        result = core.run_backtest(str(audit_path))
+        summary_path = result.get("delta_summary")
+        cases_path = result.get("delta_cases")
+        logging.info("Backtest abgeschlossen.")
+        logging.info(f"Delta Summary: {summary_path}")
+        logging.info(f"Delta Cases: {cases_path}")
+    else:
+        logging.info("Keine Änderungen festgestellt. Kein Backtest erforderlich.")
+
+    logging.info(f"Audit abgeschlossen um {datetime.now().isoformat(timespec='seconds')}")
+
+
+if __name__ == "__main__":
+    main()