Add report_generation/src/report_generation/cli.py

report_generation/src/report_generation/cli.py

@@ -0,0 +1,80 @@
+import argparse
+import json
+import sys
+from pathlib import Path
+from typing import Any
+
+import pandas as pd
+
+from report_generation import core
+
+
+def _validate_input_file(path_str: str) -> Path:
+    path = Path(path_str)
+    if not path.exists() or not path.is_file():
+        raise FileNotFoundError(f"Input file not found: {path}")
+    if path.suffix.lower() != ".json":
+        raise ValueError(f"Input file must be a JSON file, got {path.suffix}")
+    return path
+
+
+def _validate_output_path(path_str: str) -> Path:
+    path = Path(path_str)
+    if not path.parent.exists():
+        raise FileNotFoundError(f"Output directory does not exist: {path.parent}")
+    return path
+
+
+def _load_analysis_results(input_path: Path) -> Any:
+    with input_path.open("r", encoding="utf-8") as f:
+        data = json.load(f)
+    # Input validation: expect list[dict] or dict
+    if isinstance(data, list):
+        return pd.DataFrame(data)
+    elif isinstance(data, dict):
+        return data
+    else:
+        raise TypeError(
+            f"Invalid input structure: expected list or dict, got {type(data)}"
+        )
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(
+        description="CLI zum Generieren eines Stabilitätsberichts aus Analyseergebnissen."
+    )
+    parser.add_argument(
+        "--input",
+        required=True,
+        help="Pfad zur JSON-Datei mit den Analyseergebnissen.",
+    )
+    parser.add_argument(
+        "--output",
+        required=True,
+        help="Zielpfad für die generierte Report-Datei.",
+    )
+
+    args = parser.parse_args()
+
+    try:
+        input_path = _validate_input_file(args.input)
+        output_path = _validate_output_path(args.output)
+        analysis_results = _load_analysis_results(input_path)
+
+        report_path = core.generate_report(analysis_results)
+
+        # Falls generate_report Rückgabe nicht ins Ziel schreibt, kopiere ggf.
+        generated_path = Path(report_path)
+        if generated_path != output_path:
+            output_content = Path(report_path).read_text(encoding="utf-8")
+            output_path.write_text(output_content, encoding="utf-8")
+
+        print(f"Report generated successfully: {output_path}")
+
+    except Exception as e:
+        print(f"Error: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()