#!/bin/sh
# postinst script for vircadia-server
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <postinst> `abort-remove'
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see https://www.debian.org/doc/debian-policy/ or
# the debian-policy package

getAthenaEnabled()
{
      return systemctl list-units --state=loaded \
	     | grep -P "(athena-assignment-client|athena-domain-server|athena-server)" \
	     | cut -d' ' -f 1 \
	     | xargs -I {} sh -c 'if systemctl is-enabled {} >/dev/null ; then echo {} ; fi' \
	     | paste -s -d'|'
}

getVircadiaEnabled()
{
       	return systemctl list-units --state=loaded \
	       	| grep -P "(vircadia-assignment-client|vircadia-domain-server|vircadia-server)" \
	       	| cut -d' ' -f 1 \
	       	| xargs -I {} sh -c 'if systemctl is-enabled {} >/dev/null ; then echo {} ; fi' \
	       	| paste -s -d'|'
}

getAthenaActive()
{
       	return systemctl list-units \
	       	| grep -P "(athena-assignment-client|athena-domain-server|athena-server)" \
	       	| cut -d' ' -f 1 \
	       	| paste -s -d'|'
}

getVircadiaActive()
{
       	return systemctl list-units \
	       	| grep -P "(vircadia-assignment-client|vircadia-domain-server|vircadia-server)" \
	       	| cut -d' ' -f 1 \
	       	| paste -s -d'|'
}

disableList()
{
       	echo $1 \
	       	| xargs -d'|' \
	       	| systemctl disable
}

enableList()
{
       	echo $1 \
	       	| xargs -d'|' \
	       	| systemctl enable
}

stopList()
{
       	echo $1 \
	       	| xargs -d'|' \
	       	| systemctl stop
}

startList()
{
       	echo $1 \
	       	| xargs -d'|' \
	       	| systemctl start
}

case "$1" in
    configure)
	ldconfig -n /opt/vircadia/lib
	adduser --system --quiet --gecos "Vircadia" --home /var/lib/vircadia --group --no-create-home vircadia
	mkdir -p /var/lib/vircadia
	chown vircadia:vircadia /var/lib/vircadia
	chmod 775 /var/lib/vircadia
	if [ ! -d "/var/lib/vircadia/default" ]; then
		if [ -d "/var/lib/athena" ]; then
			getAthenaActive         # get list of active Athena services
			ATHENA_ACTIVE=$?
			getAthenaEnabled        # get list of enabled Athena services
			ATHENA_ENABLED=$?
			stopList $ATHENA_ACTIVE # shutdown active Athena servers

			# copy the server files over
			cp /etc/opt/athena/* /etc/opt/vircadia
			cp -R /var/lib/athena/* /var/lib/vircadia
			chown -R vircadia:vircadia /var/lib/vircadia/*
			find /var/lib/athena -maxdepth 3 -path "*\.local/share" -execdir sh -c 'cd share; ln -s ../.. Vircadia - dev' ';'
			find /var/lib/athena -maxdepth 3 -path "*\.local/share" -execdir sh -c 'cd share; ln -s ../.. Vircadia' ';'

			VIRCADIA_ACTIVE=`echo $ATHENA_ACTIVE | sed 's/athena/vircadia/g'`
			VIRCADIA_ENABLED=`echo $ATHENA_ENABLED | sed 's/athena/vircadia/g'`

			disableList $ATHENA_ENABLED
			enableList $VIRCADIA_ENABLED
			startList $VIRCADIA_ACTIVE
		else
			/opt/vircadia/new-server default 40100
			systemctl enable vircadia-server@default.target
			systemctl start vircadia-server@default.target
		fi
	fi
    ;;

    abort-remove|abort-deconfigure)
	ldconfig -n /opt/vircadia/lib
    ;;

    abort-upgrade)
    ;;

    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

#DEBHELPER#

exit 0