#!/usr/bin/env bash
set -eo pipefail

if [[ "$1" == "-h" || "$1" == "--help" ]]; then
    cat <<EOF
Usage: $(basename "$0") [-h]

Display external IP address.

Options:
    -h, --help    Show this help message

EOF
    exit 0
fi

if [[ "$1" == "-2" ]]; then
    curl -fsSL https://api.myip.com | jq -r .ip
else
    curl -fsSL http://ipecho.net/plain
    echo
fi
