#!/usr/bin/env bash

if ! vnstat -i wlan0 --oneline >/dev/null 2>&1; then
    echo "{\"text\": \"Offline\", \"tooltip\": \"vnstat daemon unavailable\"}"
    exit 0
fi

raw_data=$(vnstat -i wlan0 --oneline)

rx_today=$(echo "$raw_data" | cut -d';' -f4)
tx_today=$(echo "$raw_data" | cut -d';' -f5)
total_today=$(echo "$raw_data" | cut -d';' -f6)

echo "{\"text\": \"↓ $rx_today ↑ $tx_today\", \"tooltip\": \"today total: $total_today\"}"