From 14df35ca07bcf2083920978553367895167814a6 Mon Sep 17 00:00:00 2001
From: Mika <kontakt@donau2space.de>
Date: Tue, 20 Jan 2026 12:12:24 +0000
Subject: [PATCH] Add trace_aggpy/src/trace_aggpy/cli.py

---
 trace_aggpy/src/trace_aggpy/cli.py | 56 ++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 trace_aggpy/src/trace_aggpy/cli.py

diff --git a/trace_aggpy/src/trace_aggpy/cli.py b/trace_aggpy/src/trace_aggpy/cli.py
new file mode 100644
index 0000000..7d8a03d
--- /dev/null
+++ b/trace_aggpy/src/trace_aggpy/cli.py
@@ -0,0 +1,56 @@
+import argparse
+import json
+from pathlib import Path
+from typing import Any
+
+from trace_aggpy.main import analyze_reads
+
+
+def _load_json(path: Path) -> Any:
+    if not path.exists():
+        raise FileNotFoundError(f"Input file does not exist: {path}")
+    with path.open('r', encoding='utf-8') as f:
+        data = json.load(f)
+    if not isinstance(data, list):
+        raise ValueError("Expected a list of read events in JSON input.")
+    return data
+
+
+def _write_json(path: Path, data: dict) -> None:
+    with path.open('w', encoding='utf-8') as f:
+        json.dump(data, f, ensure_ascii=False, indent=2, sort_keys=True)
+
+
+def main() -> None:
+    """CLI entry point: Reads JSON input, calls analyze_reads, writes summary output."""
+    parser = argparse.ArgumentParser(description="Analyze N40 Read Events and output JSON summary.")
+    parser.add_argument("--input", required=True, help="Pfad zur JSON-Input-Datei mit Read-Events.")
+    parser.add_argument("--output", required=True, help="Pfad zur zu erzeugenden Summary-JSON.")
+    args = parser.parse_args()
+
+    input_path = Path(args.input)
+    output_path = Path(args.output)
+
+    read_data = _load_json(input_path)
+
+    if not read_data:
+        raise ValueError("Input read data is empty.")
+
+    corr_id = read_data[0].get('corr_id') if isinstance(read_data[0], dict) else None
+    if not corr_id or not isinstance(corr_id, str):
+        raise ValueError("Missing or invalid 'corr_id' in input data.")
+
+    result = analyze_reads(corr_id=corr_id, read_data=read_data)
+
+    if hasattr(result, 'to_json') and callable(getattr(result, 'to_json')):
+        output_data = result.to_json()
+    elif isinstance(result, dict):
+        output_data = result
+    else:
+        raise TypeError("Unexpected output type from analyze_reads. Expected dict or object with to_json().")
+
+    _write_json(output_path, output_data)
+
+
+if __name__ == "__main__":
+    main()