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path: root/.local/bin/statusbar/sb-nettraf
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#!/bin/sh

# Module showing network traffic. Shows how much data has been received (RX) or
# transmitted (TX) since the previous time this script ran. So if run every
# second, gives network traffic per second.

update() {
    sum=0
    for arg; do
        read -r i < "$arg"
        sum=$(( sum + i ))
    done
    cache=/tmp/${1##*/}
    [ -f "$cache" ] && read -r old < "$cache" || old=0
    printf %d\\n "$sum" > "$cache"
    printf %d\\n $(( sum - old ))
}

if [ ! -n "$1" ]; then
  rx=$(update /sys/class/net/[ew]*/statistics/rx_bytes)
  tx=$(update /sys/class/net/[ew]*/statistics/tx_bytes)
  printf "🔻%4sB 🔺%4sB\\n" $(numfmt --to=iec $rx $tx)
else
  if [ "$1" -eq 1 ]; then
    hyprctl dispatch exec "[float; size 1800 1300;]" 'kitty -e sh -c "bmon"'
  elif [ "$1" -eq 3 ]; then
    notify-send "🌐 Network traffic module" "🔻: Traffic received
🔺: Traffic transmitted"
  fi
fi