From 62fa3e2966a4712e9b3739484addcf2ad5fbe427 Mon Sep 17 00:00:00 2001
From: Mika <kontakt@donau2space.de>
Date: Thu, 29 Jan 2026 16:23:28 +0000
Subject: [PATCH] Add report_generator/src/report_generator/cli.py

---
 report_generator/src/report_generator/cli.py | 60 ++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 report_generator/src/report_generator/cli.py

diff --git a/report_generator/src/report_generator/cli.py b/report_generator/src/report_generator/cli.py
new file mode 100644
index 0000000..7ba4857
--- /dev/null
+++ b/report_generator/src/report_generator/cli.py
@@ -0,0 +1,60 @@
+import argparse
+import json
+import os
+from pathlib import Path
+from datetime import datetime
+
+from report_generator.core import generate_report
+
+
+def main() -> None:
+    """CLI entrypoint: loads drift metrics, invokes report generation, and stores the output."""
+    parser = argparse.ArgumentParser(description="Generate a CI drift analysis report.")
+    parser.add_argument(
+        "--input",
+        required=True,
+        help="Pfad zur JSON-Datei mit aggregierten Drift-Check-Ergebnissen.",
+    )
+    parser.add_argument(
+        "--threshold",
+        required=False,
+        type=float,
+        default=0.3,
+        help="WARN-Schwelle (Standard: 0.3).",
+    )
+    args = parser.parse_args()
+
+    input_path = Path(args.input)
+    if not input_path.exists() or not input_path.is_file():
+        raise FileNotFoundError(f"Eingabedatei nicht gefunden: {input_path}")
+
+    # Load JSON with input validation
+    with input_path.open("r", encoding="utf-8") as f:
+        try:
+            data = json.load(f)
+        except json.JSONDecodeError as e:
+            raise ValueError(f"Ungültiges JSON-Format: {e}")
+
+    required_fields = ["warn_count", "total_runs"]
+    for field in required_fields:
+        if field not in data:
+            raise KeyError(f"Fehlendes Feld '{field}' in Eingabedatei.")
+        if not isinstance(data[field], int):
+            raise TypeError(f"Feld '{field}' muss vom Typ int sein, erhalten: {type(data[field])}.")
+
+    warn_count = data["warn_count"]
+    total_runs = data["total_runs"]
+
+    if total_runs <= 0:
+        raise ValueError("total_runs muss größer als 0 sein.")
+
+    threshold = args.threshold
+
+    report_path = generate_report(warn_count, total_runs, threshold)
+
+    # Optional: echo summary info
+    print(f"Bericht generiert: {report_path}")
+
+
+if __name__ == "__main__":
+    main()