#!/bin/sh

set -e

. /usr/share/debconf/confmodule
db_version 2.0

RELEASE=`lsb_release -rs` || RELEASE=""

create_var_dir() {
    # create var dir
    if [ ! -d /var/lib/maas ]; then
        mkdir -p /var/lib/maas
    fi
    chown -R maas:maas /var/lib/maas/

}
create_log_dir() {
    # Give appropriate permissions
    if [ ! -f /var/log/maas/rackd.log ]; then
        touch /var/log/maas/rackd.log
    fi
    chown maas:maas /var/log/maas/rackd.log
}

configure_maas_tgt() {
    # Ensure that iSCSI targets get re-defined on reboot.
    # Creates a softlink in /etc/tgt/conf.d/ that points to the current
    # boot images' tgt configuration.
    mkdir -p /etc/tgt/conf.d
    ln -sf /var/lib/maas/boot-resources/current/maas.tgt /etc/tgt/conf.d/maas.conf
}

extract_cluster_uuid(){
    # Extract ClUSTER_UUID setting from config file $1. This will work
    # on the old the cluster config file (which is shell).
    awk '{ split($1,array,"\"")} END{print array[2] }' "$1"
}

extract_maas_url(){
    # Extract the MAAS_URL setting from the config file $1.
    grep -Eo "https?://[^ ]+" "$1" | cut -d"\"" -f1
}

configure_cluster_uuid(){
    # This will configure a UUID if one has not previously been set.
    maas-provision config --init
}

configure_cluster_authbind() {
    MAAS_UID="`id -u maas`"
    if [ ! -f "/etc/authbind/byuid/$MAAS_UID" ]; then
        if [ ! -d "/etc/authbind/byuid" ]; then
            mkdir -p /etc/authbind/byuid
            chmod 755 /etc/authbind
            chmod 755 /etc/authbind/byuid
        fi
    fi
    echo '0.0.0.0/0:68,69' >/etc/authbind/byuid/$MAAS_UID
    echo '::/0,68-69' >>/etc/authbind/byuid/$MAAS_UID
    chown maas:maas /etc/authbind/byuid/$MAAS_UID
    chmod 700 /etc/authbind/byuid/$MAAS_UID
}

configure_maas_url(){
    # Get the MAAS URL on configure/reconfigure and write it to the conf files.
    db_get maas-rack-controller/maas-url || true
    if [ -n "$RET" ]; then
        maas-provision config --region-url "$RET"
    fi
}

configure_shared_secret() {
    db_get maas-rack-controller/shared-secret || true
    if [ -n "$RET" ]; then
        echo "$RET" | maas-provision install-shared-secret
        chown maas:maas /var/lib/maas/secret
        chmod 0640 /var/lib/maas/secret
    fi
}


rack_controller_upgrade() {
    # If we are upgrading from an older version, then we need to obtain
    # the cluster UUID from the old configuration file and set it with
    # the new configuration tool.
    # If upgrading from 1.5, 1.7, 1.8
    set -x
    if [ -f /etc/maas/maas_cluster.conf ]; then
        uuid=$(extract_cluster_uuid /etc/maas/maas_cluster.conf)
        maas-provision config --uuid "$uuid"
        maas_url=$(extract_maas_url /etc/maas/maas_cluster.conf)
        maas-provision config --region-url "$maas_url"
        db_set maas-rack-controller/maas-url "$maas_url"
        mv /etc/maas/maas_cluster.conf /etc/maas/maas_cluster.conf.maas-old
        mv /etc/maas/pserv.yaml /etc/maas/pserv.yaml.maas-old
    fi
    # if upgrading from 1.9
    if [ -f /etc/maas/clusterd.conf ]; then
        mv /etc/maas/clusterd.conf /etc/maas/rackd.conf
    fi
}
# Unconditionally ensure that there is at least an empty configuration
# file. This does *not* overwrite any existing configuration.
maas-provision config

if [ "$1" = "configure" ] && [ -z "$2" ]; then
    create_log_dir
    create_var_dir
    configure_maas_tgt
    configure_maas_url
    configure_cluster_uuid
    configure_cluster_authbind
    maas-provision upgrade-cluster
    rack_controller_upgrade

elif [ -n "$DEBCONF_RECONFIGURE" ]; then
    configure_maas_url
    # Only ask for a shared secret when the region is not installed
    # on the same system.
    if [ ! -f /usr/sbin/maas-region-admin ]; then
        db_input high maas-rack-controller/shared-secret
        db_go
    fi
    configure_shared_secret

elif [ "$1" = "configure" ] && dpkg --compare-versions "$2" gt 0.1+bzr266+dfsg-0ubuntu1; then
    configure_cluster_authbind
    maas-provision upgrade-cluster
fi

db_stop


# Automatically added by dhpython:
if which py3compile >/dev/null 2>&1; then
	py3compile -p maas-rack-controller -V 3.5-
fi

# End automatically added section
# Automatically added by dh_installinit
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
	if [ -x "/etc/init.d/maas-rackd" ]; then
		update-rc.d maas-rackd defaults >/dev/null
	fi
	if [ -x "/etc/init.d/maas-rackd" ] || [ -e "/etc/init/maas-rackd.conf" ]; then
		invoke-rc.d maas-rackd start || exit $?
	fi
fi
# End automatically added section
# Automatically added by dh_systemd_start
if [ -d /run/systemd/system ]; then
	systemctl --system daemon-reload >/dev/null || true
	deb-systemd-invoke start maas-rackd.service >/dev/null || true
fi
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/bootresources.yaml 1.7.0~beta1+bzr2781-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/maas_local_celeryconfig_cluster.py 1.7.0~beta3+bzr3043-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/init/maas-cluster-celery.conf 1.7.0~beta3+bzr3043-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/init/maas-pserv.conf 1.7.0~beta3+bzr3043-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/init/maas-cluster.conf 1.7.0~beta6+bzr3231-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/init/maas-cluster-register.conf 1.7.0~beta6+bzr3231-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/maas-cluster-http.conf 1.8.0~alpha1+bzr3522-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/templates/power/apc.template 1.9.0~alpha1+bzr4184-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/templates/power/mscm.template 1.9.0~alpha1+bzr4184-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/templates/power/msftocs.template 1.9.0~alpha1+bzr4184-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/templates/power/sm15k.template 1.9.0~alpha1+bzr4184-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/templates/power/ucsm.template 1.9.0~alpha1+bzr4184-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/templates/power/virsh.template 1.9.0~alpha1+bzr4184-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/templates/power/vmware.template 1.9.0~alpha1+bzr4184-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/templates/power/ipmi.conf 1.9.0~alpha1+bzr4221-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/maas/templates/power/ipmi.template 1.9.0~alpha1+bzr4221-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/init/maas-clusterd.conf 2.0.0~alpha1+bzr4635-0ubuntu1 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /lib/systemd/system/maas-clusterd.service 2.0.0~alpha1+bzr4635-0ubuntu1 -- "$@"
# End automatically added section