#!/bin/sh

PREFIX=${PKG_PREFIX:-%%LOCALBASE%%}

err() {
    echo "$@" >&2
    exit 1
}

case $2 in
    POST-INSTALL)
        DOMAIN=$(hostname -d)
        HOSTNAME=$(hostname -f)
        PRIMARY_IF=$(route -n get default | awk '/interface:/{print $2}')
        [ -z "$PRIMARY_IF" ] && err "Could not determine primary interface (no default route)"
        PRIMARY_IP=$(ifconfig "$PRIMARY_IF" inet | awk '/inet /{print $2; exit}')
        [ -z "$PRIMARY_IP" ] && err "No IPv4 address found on $PRIMARY_IF"
        echo "Updating $PREFIX/etc/%%PORTNAME%%.nsupdate with your hostname ($HOSTNAME) and primary IPv4 address ($PRIMARY_IP)"
        sed -i "" -e "s#%%ZONE%%#$DOMAIN#" -e "s#%%HOSTNAME%%#$HOSTNAME#" -e "s#%%PRIMARY_IP%%#$PRIMARY_IP#" $PREFIX/etc/%%PORTNAME%%.nsupdate
        ;;
esac