#!/usr/bin/env bash
#
# A simple little script to output Network I/O to a tmux status bar.
# Requires `ifstat`.
#
#    $ network
#    ↓0.33 KB/s ↑0.12 KB/s

data=$(ifstat -i en0 -z -S -q 1 1 | tail -1)
down=$(echo $data | cut -f 2 -d " ")
up=$(echo $data | cut -f 3 -d " ")

if [ $(echo "($down / 1024) > 1" | bc -l) -eq 1 ]; then
  down=$(echo "$down / 1024" | bc -l | xargs printf "%.2f")
  down="#[fg=red]↓$down MB/s#[fg=]"
else
  down="#[fg=green]↓$down KB/s#[fg=]"
fi

if [ $(echo "($up / 1024) > 1" | bc -l) -eq 1 ]; then
  up=$(echo "$up / 1024" | bc -l | xargs printf "%.2f")
  up="#[fg=red]↑$up MB/s#[fg=]"
else
  up="#[fg=green]↑$up KB/s#[fg=]"
fi

echo -e $"$down $up"