reverse_uuid() {
    echo $1 | head -c 8 | tail -c 2
    echo $1 | head -c 6 | tail -c 2
    echo $1 | head -c 4 | tail -c 2
    echo $1 | head -c 2 | tail -c 2
    echo $1 | head -c 13 | tail -c 2
    echo $1 | head -c 11 | tail -c 2
    echo $1 | head -c 18 | tail -c 2
    echo $1 | head -c 16 | tail -c 2
    echo $1 | tail -c 18 | sed -e s/-//
}
setdebopt() {
    debconf-set $1 $2
    echo d-i $1 $3 $2 >> /preseed.cfg
}

mkdir -p /etc/confluent
for i in /sys/class/net/*; do
    ip link set $(basename $i) up
done
TRIES=5
while [ ! -e /dev/disk ] && [ $TRIES -gt 0 ]; do
    sleep 2
    TRIES=$((TRIES - 1))
done
for i in /sys/class/net/*; do
    ip link set $(basename $i) down
    udevadm info $i | grep ID_NET_DRIVER=cdc_ether > /dev/null &&  continue
    ip link set $(basename $i) up
done
cp -a /tls/* /etc/ssl/certs/
mkdir -p /etc/confluent
if [ -e /dev/disk/by-label/CNFLNT_IDNT ]; then
    tmnt=$(mktemp -d)
    tcfg=$(mktemp)
    mount /dev/disk/by-label/CNFLNT_IDNT $tmnt
    cd $tmnt
    deploysrvs=$(sed -n '/^deploy_servers:/,/^[^-]/p' cnflnt.yml |grep ^-|sed -e 's/^- //'|grep -v :)
    nodename=$(grep ^nodename: cnflnt.yml|cut -f 2 -d ' ')
    echo NODENAME: $nodename > /etc/confluent/confluent.info
    sed -n '/^net_cfgs:/,/^[^- ]/{/^[^- ]/!p}' cnflnt.yml |sed -n '/^-/,/^-/{/^-/!p}'| sed -e 's/^[- ]*//'> $tcfg
    autoconfigmethod=$(grep ^ipv4_method: $tcfg)
    autoconfigmethod=${autoconfigmethod#ipv4_method: }
    if [ "$autoconfigmethod" = "static" ]; then
        setdebopt netcfg/disable_dhcp true boolean
        v4addr=$(grep ^ipv4_address: $tcfg|cut -d: -f 2|sed -e 's/ //')
        v4gw=$(grep ^ipv4_gateway: $tcfg|cut -d: -f 2| sed -e 's/ //')
        if [ "$v4gw" = "null" ]; then
            v4gw=""
        fi
        v4nm=$(grep ^ipv4_netmask: $tcfg|cut -d: -f 2|sed -e 's/ //')
        setdebopt netcfg/get_netmask $v4nm string
        setdebopt netcfg/get_ipaddress ${v4addr%/*} string
        setdebopt netcfg/confirm_static true boolean
        if [ ! -z "$v4gw" ]; then
            setdebopt netcfg/get_gateway $v4gw string
        fi
        for NICGUESS in $(ip link|grep LOWER_UP|grep -v LOOPBACK|cut -d ' ' -f 2 | sed -e 's/:$//'); do
            ip addr add dev $NICGUESS $v4addr
            if [ ! -z "$v4gw" ]; then
                ip route add default via $v4gw
            fi
            for dsrv in $deploysrvs; do
                if wget https://$dsrv/confluent-public/ --tries=1 --timeout=1 -O /dev/null > /dev/null 2>&1; then
                    deploysrvs=$dsrv
                    NIC=$NICGUESS
                    setdebopt netcfg/choose_interface $NIC select
                    break
                fi
            done
            if [ -z "$NIC" ]; then
                ip -4 a flush dev $NICGUESS
            else
                break
            fi
        done 
        #TODO: nameservers
    elif [ "$v4cfgmeth" = "dhcp" ]; then
        setdebopt netcfg/disable_dhcp false boolean
        setdebopt netcfg/confirm_static false boolean
        for NICGUESS in $(ip link|grep LOWER_UP|grep -v LOOPBACK|cut -d ' ' -f 2 | sed -e 's/:$//'); do
            udhcpc $NICGUESS
        done
        for dsrv in $deploysrvs; do
            if wget https://$dsrv/confluent-public/ --tries=1 --timeout=1 -O /dev/null > /dev/null 2>&1; then
                deploysrvs=$dsrv
            fi
        done
    fi
    mgr=$deploysrvs
    ln -s /opt/confluent/bin/clortho /opt/confluent/bin/genpasshmac
    hmackeyfile=/tmp/cnflnthmackeytmp
    passfile=/tmp/cnflnttmppassfile
    passcrypt=/tmp/cnflntcryptfile
    hmacfile=/tmp/cnflnthmacfile
    echo -n $(grep ^apitoken: cnflnt.yml|cut -d ' ' -f 2) > $hmackeyfile
    /opt/confluent/bin/genpasshmac $passfile $passcrypt $hmacfile $hmackeyfile
    wget --header="CONFLUENT_NODENAME: $nodename" --header="CONFLUENT_CRYPTHMAC: $(cat $hmacfile)" --post-file=$passcrypt https://$mgr/confluent-api/self/registerapikey -O - --quiet
    cp $passfile /etc/confluent/confluent.apikey
    nic=$NIC
else
    dhuuid=$(reverse_uuid $(cat /sys/devices/virtual/dmi/id/product_uuid))
    dhcpid=$(mktemp)
    mkdir -p /etc/confluent
    cp /tls/* /etc/ssl/certs/
    cat /tls/*.pem >> /etc/confluent/ca.pem
    for nic in $(ip link | grep mtu|grep -v LOOPBACK|cut -d: -f 2|sed -e 's/ //'); do
        ip link set $nic up
    done
    for nic in $(ip link | grep mtu|grep -v LOOPBACK|grep LOWER_UP|cut -d: -f 2|sed -e 's/ //'); do
        if udhcpc -i $nic -p $dhcpid -t 2 -T 2 -n -x 93:0007 -x 97:00$dhuuid -q; then
            /opt/confluent/bin/copernicus > /etc/confluent/confluent.info
            if grep ^MANAGER:.*\\. /etc/confluent/confluent.info ; then
                break
            fi
        fi
        ip -4 flush dev $nic
    done
    mgr=$(grep ^MANAGER:.*\\. /etc/confluent/confluent.info|head -n 1|cut -d: -f 2|sed -e 's/ //')
    nodename=$(grep ^NODENAME: /etc/confluent/confluent.info|head -n 1|cut -d: -f 2|sed -e 's/ //')
    /opt/confluent/bin/clortho $nodename $mgr > /etc/confluent/confluent.apikey
fi
apikey=$(cat /etc/confluent/confluent.apikey)
cd /etc/confluent
wget --header="CONFLUENT_NODENAME: $nodename" --header="CONFLUENT_APIKEY: $apikey" https://$mgr/confluent-api/self/deploycfg
cd -
predir=$(mktemp -d)
cd $predir
cp /etc/confluent/deploycfg /etc/confluent/confluent.deploycfg
profile=$(grep ^profile: /etc/confluent/deploycfg|cut -d ' ' -f 2)
namesrvs=$(sed -n '/^nameservers:/,/^[^-]/p' /etc/confluent/deploycfg|grep ^- | cut -d ' ' -f 2|sed -e 's/ //')
for namesrv in "$namesrvs"; do
    setdebopt netcfg/get_nameservers $namesrv string
done
rootpass=$(grep ^rootpassword: /etc/confluent/deploycfg|cut -d ' ' -f 2|sed -e 's/ //')
if [ "$rootpass" = null ] || [ -z "$rootpass" ]; then
    setdebopt passwd/root-login false boolean
else
    setdebopt passwd/root-login true boolean
    setdebopt passwd/root-password-crypted $rootpass string
fi
setdebopt time/zone $(grep ^timezone: /etc/confluent/deploycfg|cut -d ' ' -f 2|sed -e 's/ //') string
ntpsrvs=$(sed -n '/^ntpservers:/,/^[^-]/p' /etc/confluent/deploycfg|grep ^- | cut -d ' ' -f 2|sed -e 's/ //')
for ntpsrv in "$ntpsrvs"; do
    setdebopt clock-setup/ntp true boolean
    setdebopt clock-setup/ntp-server $ntpsrv string
done
setdebopt debian-installer/locale $(grep ^locale: /etc/confluent/deploycfg|cut -d ' ' -f 2) select
domainname=$(grep ^dnsdomain: /etc/confluent/deploycfg|cut -d ' ' -f 2)
if [ ! -z "$domainname" ] && [ "$domainname" != "null" ]; then
    setdebopt netcfg/get_domain $domainname string
fi




wget https://$mgr/confluent-public/os/$profile/scripts/pre.sh
chmod u+x pre.sh
wget https://$mgr/confluent-public/os/$profile/scripts/prechroot.sh
chmod u+x prechroot.sh
wget https://$mgr/confluent-public/os/$profile/scripts/post.sh
chmod u+x post.sh
wget https://$mgr/confluent-public/os/$profile/preseed.cfg
cat preseed.cfg >> /preseed.cfg
echo $mgr > /etc/confluent/deployer
setdebopt auto-install/enable true boolean
setdebopt partman/early_command  $predir/pre.sh string
setdebopt preseed/late_command $predir/prechroot.sh string
mv $predir/post.sh /tmp/
cd -
ip -4 a flush dev $nic
setdebopt netcfg/choose_interface $nic select
setdebopt netcfg/get_hostname $nodename string
setdebopt mirror/protocol https string
setdebopt mirror/country manual string
setdebopt mirror/https/hostname $mgr string
setdebopt mirror/https/directory /confluent-public/os/$profile/distribution string
setdebopt mirror/protocol https string
setdebopt mirror/https/proxy "" string
setdebopt apt-setup/security_host $mgr string
if [ ! -e /dev/disk/by-label/CNFLNT_IDNT ]; then
    v4cfgmeth=$(grep ipv4_method: /etc/confluent/deploycfg |cut -d: -f 2|sed -e 's/ //')
    if [ "$v4cfgmeth" = "static" ]; then
        setdebopt netcfg/disable_dhcp true boolean
        v4addr=$(grep ^ipv4_address: /etc/confluent/deploycfg|cut -d: -f 2|sed -e 's/ //')
        v4gw=$(grep ^ipv4_gateway: /etc/confluent/deploycfg|cut -d: -f 2| sed -e 's/ //')
        if [ "$v4gw" = "null" ]; then
            v4gw=""
        fi
        v4nm=$(grep ^ipv4_netmask: /etc/confluent/deploycfg|cut -d: -f 2|sed -e 's/ //')
        setdebopt netcfg/get_netmask $v4nm string
        setdebopt netcfg/get_ipaddress $v4addr string
        setdebopt netcfg/confirm_static true boolean
        if [ ! -z "$v4gw" ]; then
            setdebopt netcfg/get_gateway $v4gw string
        fi
        namesrvs=$(sed -n '/^nameservers:/,/^[^-]/p' /etc/confluent/deploycfg|grep ^- | cut -d ' ' -f 2|sed -e 's/ //')
        for namesrv in "$namesrvs"; do
            setdebopt netcfg/get_nameservers $namesrv string
        done
    elif [ "$vpcfgmeth" = "dhcp" ]; then
        setdebopt netcfg/disable_dhcp false boolean
        setdebopt netcfg/confirm_static false boolean
    fi
fi