import json
import sys
from pathlib import Path

from scorer import score


def main():
    if len(sys.argv) != 3:
        print("Usage: python cli.py <reference.csv> <predictions.csv>", file=sys.stderr)
        sys.exit(1)

    reference_path = Path(sys.argv[1])
    prediction_path = Path(sys.argv[2])

    if not reference_path.exists():
        print(f"Reference file not found: {reference_path}", file=sys.stderr)
        sys.exit(1)

    if not prediction_path.exists():
        print(f"Prediction file not found: {prediction_path}", file=sys.stderr)
        sys.exit(1)

    try:
        results = score(reference_path, prediction_path)
    except Exception as e:
        print(f"Scoring error: {e}", file=sys.stderr)
        sys.exit(1)

    print(json.dumps(results, indent=2))


if __name__ == "__main__":
    main()