#!/bin/bash
# Disk usage checker with JSON output
# Verifies actual disk usage via stat

OUTPUT_DIR="/root/.hermes/wizard-outputs/spark"

# Get disk usage
TOTAL=$(df -B1 / | awk 'NR==2 {print $2}')
USED=$(df -B1 / | awk 'NR==2 {print $3}')
FREE=$(df -B1 / | awk 'NR==2 {print $4}')
USED_PCT=$(df -B1 / | awk 'NR==2 {print $5}')

# Get Python version  
PY_VER=$(python3 -c "import sys; print(f'{sys.version_info.major}.{sys.version_info.minor}.{sys.version_info.micro}')" 2>/dev/null || echo "python3 not available")

# Get home directory size
HOME_SIZE=$(du -sb $HOME 2>/dev/null | cut -f1 || echo 0)
HOME_SIZE_MB=$(echo "scale=2; $HOME_SIZE / 1048576" | bc 2>/dev/null || echo "0")

# Output JSON
cat <<EOF
{
  "timestamp": "$(date -u +%Y-%m-%dT%H:%M:%SZ)",
  "root_disk": {
    "total_bytes": $TOTAL,
    "used_bytes": $USED,
    "free_bytes": $FREE,
    "used_percent": "$USED_PCT"
  },
  "home_size_bytes": $HOME_SIZE,
  "python_version": "$PY_VER",
  "status": "verified_actual_df_output"
}
EOF