#!/bin/bash

# set -x

# This script tries to install a bwLehrpool satellite server in a (hopefully)
# automatic fashion. It is only verified to work on the current Debian release.
# While it may work on any recent Debian-derived distribution using systemd
# this is not guaranteed in any way.
#
# This installer is destructive and not idempotent. Only run on a clean Debian
# install. Take a snapshot/backup before applying this, so you can start
# over in case of failure.

[ -z "$1" ] && exec $(readlink -f "$0 --help")

while [ -n "$1" ]; do
	case "$1" in
		"-h" | "--help")
			echo "#"
			echo "# bwSuite Server and environment autoinstaller"
			echo "#"
			echo "# Options: -h or --help      for (this) help,"
			echo "#          -V or --version   followed by a mandatory version string."
			echo "#          -n or --nodelete  to _not_ delete source code after installation."
			echo "#"
			echo "# Note: A version string must be given!"
			echo "#"
			echo "# If you need to change any predefined values, take a look into includes/00-variables.inc."
			echo "# and set them there."
			echo "#"
			exit
			;;
		"-V" | "--version")
			shift
			export VERSION="$1"
			shift
			;;
		"-n" | "--nodelete")
			NODELETE_SOURCE="true"
			shift
			;;
		*)	echo "# Restarting with --help ..."
			exec $(readlink -f "$0 --help")
			exit 0								# Never reached, but one for the aesthetics!
			;;
	esac
done

# Some version string sanity checks:
[ -z "$VERSION" ] && { echo "No version string has been given - exit."; exit 1; }
[ "${VERSION:0:1}" = '-' ] && { echo "Possibly no version string has been given - exit."; exit 1; }

# Set and save some environmental variables:
OLDUMASK=$(umask)
OLD_DEBIAN_FRONTEND="$DEBIAN_FRONTEND"

# For other variables see includes/00-variables.inc
export SELF="$(readlink -f "$0")"
export BASEDIR="$(dirname "${SELF}")"

#
#	TRAPPING hierhin!
#

# First, to include includes include them:
echo -n "# Sourcing includes: "
for INCLUDE in "$BASEDIR"/includes/*.inc; do
	echo -n "."
	source "$INCLUDE"
done
echo " ok"

####### Main program #######

system_upgrade					# No harm done even if not necessary
 
install_packages "$PACKAGELIST_SCRIPT"		# Packages needed for script
 
# Then, let's download the needed helper files to static_files, as there
# is no sense in commencing if one of these files is missing.
get_files_http
[ "${ERR}" -ne 0 ] && exit 1

# until pump is available again:
# setup_dhcp					# dhcp: no dhclient but pump

uninstall_packages mpt-status

prerequisites					# config directory, locales

# query_passwords
set_passwords					# only to be used within certain circumstances -
						# see includes/query_user.

set_version_string				# Writing version string for rc.local-script

install_packages NOREC "$PACKAGELIST_SERVER"		# Packages needed for server installable without
							# recommended packages, so option NOREC is set.
install_packages RECOM "$PACKAGELIST_WITH_RECOMMENDS"	# Packages where installation of recommended
							# packages is necessary, so opt. RECOM is set.

check_users					# Meet interesting users with uid>=1000 and kill them.
						# user 65534/sync will be ignored.
add_users_groups				# Adding necessary users and groups

install_ipxe "$IPXEDIR"
compile_ipxe "$IPXEDIR" &>/tmp/ipxesuccess &

add_mysql_dbs_users				# mysql stuff; adding databases and users
patch_mysql_config				# adding utf8 entries to /etc/mysql/my.cnf

write_tftpd_config

patch_lighttpd_config
patch_php_config				# This takes a lot of time, so any background stuff before this.

patch_ldapsearch

patch_java

install_bwSuite_server "$DMSDDIR"

install_dnbd3-server "$DNBD3DIR"

install_taskmanager "$TASKMANDIR"

install_jawol "/usr/local/sbin"

# $1: tar.gz-file, $2: unpacking to directory
unpack_tar_gz "$BASEDIR/static_files/slx-admin.tar.gz" "-C $WWWDIR/slx-admin"
unpack_tar_gz "$BASEDIR/static_files/openslx_tftp.tar.gz" "-C $TFTPDIR"

install_ldadp "$LDADPDIR" || perror "Could not install ldadp"

# NFS server configuration:
config_nfs

install_system_scripts

# color prompt, aliases
patch_bashrc
# vim config
patch_vim

install_timesync # cheap HTTP based timesync on boot

# Remove translation from menu etc., enable required modules
patch_slxadmin_dir

# Check dir and file permissions:
set_directory_permissions

# And set some symbolic links thereafter:
set_links

# Create tables, fill with predefined stuff
install_slxadmin_db

tar -z -c -T /dev/null -f /opt/openslx/empty.tgz
 
# Mark vmstore as not mounted
touch "/srv/openslx/nfs/.notmounted"

# Write version string
write_versionstring

# cleaning log files, authorized hosts, sources
clean_install
end_message

# This part drops a script and anchors it's execution within root's .profile
# Do this at the end so it's not there if something failed
drop_firstrun_script

finalize		# Cleaning script; finalize script will delete itself.

[ "$NODELETE_SOURCE" != "true" ] && { echo "#"; echo "# Deleting source directory..."; rm -rf "$BASEDIR"; echo "# done."; } \
				 || { echo "#"; echo "# Not deleting source directory; nodelete option was given."; }

echo "Warte vor Beendigung auf eventuelle Hintergrundprozesse."
echo "iPXE-Kompilationslog wurde nach /tmp/ipxesuccess geschrieben."
wait

exit 0