#!/usr/bin/env bash
# Read memory usage from /proc/meminfo
mem_total=$(grep MemTotal /proc/meminfo | awk '{print $2}')
mem_avail=$(grep MemAvailable /proc/meminfo | awk '{print $2}')

if [ -n "$mem_total" ] && [ -n "$mem_avail" ] && [ "$mem_total" -gt 0 ]; then
    mem_used=$((mem_total - mem_avail))
    mem_percent=$((mem_used * 100 / mem_total))
    used_gb=$(awk "BEGIN {printf \"%.1f\", $mem_used/1048576}")
    total_gb=$(awk "BEGIN {printf \"%.1f\", $mem_total/1048576}")
    echo "{\"percent\": $mem_percent, \"used_gb\": \"$used_gb\", \"total_gb\": \"$total_gb\"}"
else
    echo "{\"percent\": 0, \"used_gb\": \"0\", \"total_gb\": \"0\"}"
fi