#! /bin/sh 
set -e

. /usr/share/debconf/confmodule

# Guess default hostname
HOST=$( hostname -f || true )
if [ -z "$HOST" ]; then
    HOST=localhost
fi

db_get bacula-cn/hostname || true
if [ -z "$RET" ]; then
    db_set bacula-cn/hostname "$HOST"
fi

# Guess default ip
db_get bacula-cn/ip || true
if [ -z "$RET" ]; then
    # default via 161.53.55.1 dev eth0
    DEV=$( ip route show to exact 0/0 \
           | awk '$1 == "default" && $4 == "dev" { print $5; nextfile }' )
    if [ "$DEV" ]; then
        # inet 161.53.55.202/24 brd 161.53.55.255 scope global eth0
        IP=$( ip address show dev $DEV scope global \
              | awk '$1 == "inet" { sub("/[^ ]+", ""); print $2; nextfile }' )
        if [ "$IP" ]; then
            db_set bacula-cn/ip "$IP"
        fi
    fi
fi

# Sample contact
db_get bacula-cn/contact || true
if [ -z "$RET" ]; then
    db_set bacula-cn/contact "Ime Prezime <korisnik@$HOST>"
fi

# Check hostname
while true; do
    ! db_input high bacula-cn/hostname && [ $? -eq 30 ] && break
    db_go || true

    db_get bacula-cn/hostname
    [ -z "$RET" ] && continue
    echo "$RET" | grep -Eqi '^[a-z0-9-]+(\.[a-z0-9.-]+)+$' || continue

    break
done

# Check ip
while true; do
    ! db_input high bacula-cn/ip && [ $? -eq 30 ] && break
    db_go || true

    db_get bacula-cn/ip
    [ -z "$RET" ] && continue
    echo "$RET" | grep -Eqi '^[0-9]{1,3}(\.[0-9]{1,3}){3}$' || continue

    break
done

# Check contact
while true; do
    ! db_input high bacula-cn/contact && [ $? -eq 30 ] && break
    db_go || true

    db_get bacula-cn/contact
    [ -z "$RET" ] && continue
    echo "$RET" | grep -Eqi '^([^@]*<)?[a-z0-9.+-]+@[a-z0-9-]+(\.[a-z0-9.-]+)+>?$' || continue

    break
done

exit 0