#!/usr/bin/env python3
"""Quick disk usage checker - returns JSON for easy parsing."""
import json
import shutil

def get_disk_usage():
    """Get disk usage for root partition."""
    total, used, free = shutil.disk_usage("/")
    return {
        "partition": "/",
        "total_gb": round(total / (1024**3), 2),
        "used_gb": round(used / (1024**3), 2),
        "free_gb": round(free / (1024**3), 2),
        "percent_used": round((used / total) * 100, 1),
        "status": "ok" if (used / total) < 0.8 else "warning" if (used / total) < 0.9 else "critical"
    }

if __name__ == "__main__":
    result = get_disk_usage()
    print(json.dumps(result, indent=2))