#!/usr/bin/env python3
"""Unpack images.tar into the images/ directory for training."""
import subprocess
import sys
from pathlib import Path

def main():
    root = Path(__file__).parent.resolve()
    tar_file = root / "images.tar"
    if not tar_file.exists():
        print(f"Error: {tar_file} not found.", file=sys.stderr)
        return 1
    
    out_dir = root / "images"
    out_dir.mkdir(parents=True, exist_ok=True)
    print(f"Extracting {tar_file} into {root}...")
    res = subprocess.run(["tar", "-xf", str(tar_file), "-C", str(root)])
    if res.returncode == 0:
        print("Extraction complete! Images are ready in ./images/")
        return 0
    else:
        print("Failed to extract images.", file=sys.stderr)
        return res.returncode

if __name__ == "__main__":
    sys.exit(main())