#!/usr/bin/env nix-shell
#! nix-shell -i bash --pure
#! nix-shell -p bash jq curl cacert findutils coreutils

set -euxo pipefail

url="https://ip.frogeye.fr/json"
cachedir="$HOME/.cache/lip"

ip="${1:-}"
jq_sel="del(.user_agent)"

if [ $# -gt 1 ]
then
    shift
    jq_sel="$@"
fi

if [ -n "$ip" ]
then
    cachefile="$cachedir/$ip"
    if ! find "$cachefile" -mtime -7 &> /dev/null
    then
        mkdir -p "$cachedir"
        curl --silent "$url?ip=$ip" > "$cachefile"
    fi
    cat "$cachefile" | jq $jq_sel
else
    curl --silent "$url" | jq $jq_sel
fi