#!/usr/bin/env zsh
# Echos your local or WAN IP

if [[ $1 == -w ]]; then
  wan=1
  shift
fi

if [[ -n $wan ]]; then
  dig +short myip.opendns.com @resolver1.opendns.com
else
  IF=$(netstat -rn | awk '/^0.0.0.0/ {thif=substr($0,74,10); print thif;} /^default.*UG/ {thif=substr($0,65,10); print thif;}')
  if command -v ifconfig >/dev/null; then
    ifconfig ${NET_IF} | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1'
  elif command -v ip >/dev/null; then
    ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1  -d'/'
  else
    >&2 echo "No easy way to grab your IP"
    exit 1
  fi
fi