# $Id$
# configures ica-sessions on the host via mysql db settings

fix_whitespaces()
{
	local var="$@"
	echo "${var//\ /_}"
}

# helper function to create citrix session files
generate_ica_session_file()
{
	local i
	local num
	local server
	local ses_session
	local ses_filename
	local ses_username
	local ses_domain
	local ses_password
	local ses_browseradrs
	local ses_colors
	local CONFIG

	# very basic getops
	for i in $*
	do
		case $1 in
			--session) shift; ses_session="$1" ;;
			--filename) shift; ses_filename="$1" ;;
			--username) shift; ses_username="$1" ;;
			--password) shift; ses_password="$1" ;;
			--domain) shift; ses_domain="$1" ;;
			--server) shift; ses_browseradrs="$1" ;;
			--colordepth) shift; ses_colors="$1" ;;
        	esac
		shift
	done

	# abort if session, filename or server not given
	[[ -z ${ses_session} ]] && return 1
	[[ -z ${ses_filename} ]] && return 1
	[[ -z ${ses_browseradrs} ]] && return 1

	# write session files
	CONFIG="${ALX_ICA_SESSIONS}/${ses_filename}"
	clearconfig

	addconfig '[WFClient]'
	addconfig 'Version=2'

	# use ';' as ifs
	declare -i i=0
	for server in ${ses_browseradrs//;/ }
	do
		(( i++ ))
		num="${i}"
		# support newer ica-clients:
		# the first address must be named TcpBrowserAddress, but not TcpBrowserAddress1 !!
		[[ ${i} -eq 1 ]] && num=""
		addconfig "TcpBrowserAddress${num}=${server}"
	done

	addconfig 'ScreenPercent=0'
	addconfig '[ApplicationServers]'
	addconfig "${ses_session}="
	addconfig "[${ses_session}]"
	addconfig "Address=${ses_session}"
	addconfig "InitialProgram=#${ses_session}"

	# convert to ica session file values
	case ${ses_colors} in
		24|32) ses_colors="8";;
		16) ses_colors="4";;
		8) ses_colors="2";;
		*) ses_colors="4";; # default to 16bit
	esac
	addconfig "DesiredColor=${ses_colors}"
	addconfig 'TransportDriver=TCP/IP'
	addconfig 'WinStationDriver=ICA 3.0'
	addconfig "ClearPassword=${ses__password}"
	addconfig "Username=${ses_username}"
	addconfig "Domain=${ses_domain}"
	addconfig 'UseFullScreen=Yes'
	addconfig 'NoWindowManager=True'
}

# generates a sh file to start programs
generate_program_sh()
{
	local dest
	local name
	local exec
	local param
	local workdir
	local CONFIG

	# very basic getops
	for i in $*
	do
		case $1 in
			--name|-n) shift; name="$1" ;;
			--exec|-x) shift; exec="$1" ;;
			--param|-p) shift; param="$1" ;;
			--dest|-d) shift; dest="$1" ;;
			--workdir|-w) shift; workdir="$1" ;;
        	esac
		shift
	done

	# abort if name, dest or exec not given
	[[ -z ${name} ]] && return 1
	[[ -z ${exec} ]] && return 1
	[[ -z ${dest} ]] && return 1

	CONFIG="${dest}"
	addconfig "#!/bin/sh"
	[ -n "${workdir}" ] && addconfig "cd ${workdir}"
	addconfig "exec ${exec} ${param}"

	chmod 0755 "${dest}"
}

# helper functions for generate all desktop icons
generate_icon()
{
	local name
	local icon
	local command
	local dest
	local yres
	local xres
	local iwidth
	local iheight
	local deficon
	local CONFIG
	local utility

	# very basic getops
	for i in $*
	do
		case $1 in
			--name|-n) shift; name="$1" ;;
			--command|-c) shift; command="$1" ;;
			--icon|-i) shift; icon="$1" ;;
			--dest|-d) shift; dest="$1" ;;
			--xres|-x) shift; xres="$1" ;;
			--yres|-y) shift; yres="$1" ;;
			--icon-width|-w) shift; iwidth="$1" ;;
			--icon-height|-h) shift; iheight="$1" ;;
			--default-icon) shift; deficon="$1" ;;
        	esac
		shift
	done

	# some sanity checks:
	
	# abort if name or command not given
	[[ -z ${name} ]] && return 1
	[[ -z ${command} ]] && return 1

	[[ -z ${dest} ]] && dest="${ALX_UNPRIV_HOME}/.idesktop/${name}.lnk"

	# use some defaults for icon, dest, {x,y}res
	[[ -z ${xres} ]] && xres=30
	[[ -z ${yres} ]] && xres=30
	if [[ -z ${icon} ]] || [ ! -f ${icon} ]
	then
		# if no default icon is given use default.png
		[[ -z ${deficon} ]] && deficon="default.png"
		icon="${ALX_SESSIONS_ICONS}/${deficon}"
	fi

	CONFIG="${dest}"
	clearconfig

	addconfig 'table Icon'
	addconfig "  Caption: ${name}"
	addconfig "  Command: ${command}"
	addconfig "  Icon: ${icon}"
	addconfig "  X: ${xres}"
	addconfig "  Y: ${yres}"

	# add these only if not zero
	if [[ ! -z ${iwidth} ]] && [[ ! -z ${iheight} ]]
	then
		addconfig "  Width: ${iwidth}"
		addconfig "  Height: ${iheight}"
	fi

	addconfig 'end'
}

generate_all_desktop_icons()
{
	local session_list="$1"
	local other_menuitem_list="$2"
	local res
	local xres
	local yres
	local x
	local y
	local i
	local name
	local progsh_path
	local utility
	local dest
	local rc

	dest="${ALX_UNPRIV_HOME}/.idesktop"
	rc="${ALX_UNPRIV_HOME}/.ideskrc"

	# progsh path
	progsh_path="${ALX_UNPRIV_HOME}/.alxprogs"

	# get the resolution
	res=$(mysqldo "select resolution from cfg_graphic where serial='${ALX_SERIAL}'")

	# split res to x & y
	xres="${res%x*}"
	yres="${res#*x}"

	# top left edge of the icon is given in config file
	# remove a little bit to simulate the bottom-right edge
	xres="$(( ${xres} - 120 ))"
	yres="$(( ${yres} - 80 ))"

	# clean desktop icon location
	[ -d ${dest} ] && rm -rf ${dest}
	[ -f ${rc} ] && rm -f ${rc}
	install -d ${dest}

	# default settings
	declare -i x=30
	declare -i y=30

	# ica icons
	for i in ${session_list}
	do
		# abort if empty
		[[ -z ${i} ]] && continue

		# get database information
		evaluate_table cfg_sessions "where serial='${ALX_SERIAL}' and id='${i}'"

		# new line if x > xres
		if [ ${x} -ge ${xres} ]
		then
			x=30
			y=$((${y} + 80))
		fi

		# new row if y > yres
		if [ ${y} -ge ${yres} ]
		then
			x=$((${x} + 120))
			y=30

			# re-check x
			[ ${x} -ge ${xres} ] && x=30
		fi

		generate_icon \
			--name "${cfg_sessions_session}" \
			--command "nice -n 19 wfica ${ALX_ICA_SESSIONS}/$(fix_whitespaces ${cfg_sessions_filename})" \
			--icon "${ALX_SESSIONS_ICONS}/$(fix_whitespaces ${cfg_sessions_session}).png" \
			--dest "${dest}/$(fix_whitespaces ${cfg_sessions_session}).lnk" \
			--xres "${x}" \
			--yres "${y}"

		y=$((${y} + 80))
	done

	for i in ${other_menuitem_list}
	do
		# abort if empty
		[[ -z ${i} ]] && continue

		# get database information
		evaluate_table cfg_other_menuitems "where serial='${ALX_SERIAL}' and id='${i}'"

		# new line if x > xres
		if [ ${x} -ge ${xres} ]
		then
			x=30
			y=$((${y} + 80))
		fi

		# new row if y > yres
		if [ ${y} -ge ${yres} ]
		then
			x=$((${x} + 120))
			y=30

			# re-check x
			[ ${x} -ge ${xres} ] && x=30
		fi

		generate_icon \
			--name "${cfg_other_menuitems_name}" \
			--command "${progsh_path}/$(fix_whitespaces ${cfg_other_menuitems_name})" \
			--icon "${ALX_SESSIONS_ICONS}/$(fix_whitespaces ${cfg_other_menuitems_name}).png" \
			--dest "${dest}/$(fix_whitespaces ${cfg_other_menuitems_name}).lnk" \
			--xres "${x}" \
			--yres "${y}" \
			--default-icon "default_item.png"

		y=$((${y} + 80))
	done

	# add shutdown, reboot icons
	for i in shutdown reboot
	do
		# new line if x > xres
		if [ ${x} -ge ${xres} ]
		then
			x=30
			y=$((${y} + 80))
		fi

		# new row if y > yres
		if [ ${y} -ge ${yres} ]
		then
			x=$((${x} + 120))
			y=30

			# re-check x
			[ ${x} -ge ${xres} ] && x=30
		fi

		case ${i} in
			shutdown) name="Herunterfahren" ;;
			reboot) name="Neustarten" ;;
		esac

		generate_icon \
			--name "${name}" \
			--command "/usr/lib/alxconfig-ng/bin/user_${i}.sh" \
			--icon "${ALX_SESSIONS_ICONS}/${i}.png" \
			--dest "${dest}/${i}.lnk" \
			--xres "${x}" \
			--yres "${y}"

		y=$((${y} + 80))
	done

	# last but not least gen a icon with some sys informations
	local sysinfo
	local hostname
	local osversion

	osversion="$(< /etc/mageversion)"
	hostname=$(mysqldo "select hostname from cfg_network where serial='${ALX_SERIAL}'")
	sysinfo="Hostname: ${hostname} Serial: #${ALX_SERIAL} OS: alx-${osversion} Kernel: $(uname -r)"

	# now get the right position:
	# restore orig values of xres
	xres="$(( ${xres} + 120 ))"
	# default y pos (full yres -22 = cur yres + 58 !)
	yres="$(( ${yres} + 58 ))"
	# middle of the screen
	# (no txt - length required, xtdesk manage that itself)
	xres="$(( ${xres} / 2))"

	generate_icon \
		--name "${sysinfo}" \
		--command "exit 0" \
		--icon "${ALX_SESSIONS_ICONS}/sysinfo.png" \
		--dest "${dest}/sysinfo.lnk" \
		--xres "${xres}" \
		--yres "${yres}" \
		--icon-width "1" \
		--icon-height "1"
}

config_sessions()
{
	local i
	local all_ses_ids
	local all_other_ids
	local CONFIG
	local screensaver_passwd_cmd
	local fbinit
	local fbkeys

	# get all session ids from database
	all_ses_ids=$(mysqldo "select id from cfg_sessions where serial='${ALX_SERIAL}'")
	# get all other_menutiem ids from database
	all_other_ids=$(mysqldo "select id from cfg_other_menuitems where serial='${ALX_SERIAL}'")

	# get screensaver settings
	evaluate_table cfg_screensaver
	# get autostart settings
	evaluate_table cfg_autostart
	# get current color depth
	evaluate_table cfg_graphic

	# now setup fluxbox for user station

	# create a fresh fluxbox directory
	[ -d ${ALX_UNPRIV_HOME}/.fluxbox ] && rm -rf ${ALX_UNPRIV_HOME}/.fluxbox
	install -d ${ALX_UNPRIV_HOME}/.fluxbox

	# now generate fluxbox config files

	# fluxbox main config
	if [ -f ${ALX_SKELETONS}/fluxbox/init ]
	then
		fbinit="${ALX_SKELETONS}/fluxbox/init"
	else
		fbinit="/usr/share/fluxbox/init"
	fi
	cat ${fbinit} > ${ALX_UNPRIV_HOME}/.fluxbox/init

	# fluxbox autostart
	CONFIG="${ALX_UNPRIV_HOME}/.fluxbox/apps"
	# do not show decorations on messages generated with xmessage
	if [ -x /usr/bin/xmessage ]
	then
		addconfig '[app] (xmessage)'
		addconfig '	[Deco] {NONE}'
		addconfig '[end]'
	fi
	# add icon utility
	[ -x /usr/bin/idesk ] && addconfig '[startup] {nohup idesk > /dev/null &}'
	# add numlock utility
	[ -x /usr/bin/numlockx ] && addconfig '[startup] {nohup numlockx on &}'

	# add screensaver
	if [[ ! -z ${cfg_screensaver_screensaver} ]] && [[ ! -z ${cfg_screensaver_screensaver_timeout} ]]
	then
		if [[ -z ${cfg_screensaver_password} ]] || [[ ${cfg_screensaver_password} = NULL ]]
		then
			screensaver_passwd_cmd="-nolock"
		else
			screensaver_passwd_cmd="-cpasswd $(cryptpw -m des ${cfg_screensaver_password})"
		fi

		addconfig "[startup] {nohup xautolock -time ${cfg_screensaver_timeout} -locker 'xlock -mode ${cfg_screensaver_screensaver} ${screensaver_passwd_cmd}' > /dev/null &}"
	fi

	# add autostart session
	if [[ ! -z ${cfg_autostart_session} ]]
	then
		# sleep one second to wait until busybox is fully initialized and the screen is really centered
		addconfig "[startup] {sleep 1 && nohup nice -n 19 wfica ${ALX_ICA_SESSIONS}/$(fix_whitespaces ${cfg_autostart_session}) &}"
	fi

	# fluxbox hotkeys
	if [ -f ${ALX_SKELETONS}/fluxbox/keys ]
	then
		fbkeys="${ALX_SKELETONS}/fluxbox/keys"
	else
		fbkeys="/usr/share/fluxbox/keys"
	fi
	cat ${fbkeys} > ${ALX_UNPRIV_HOME}/.fluxbox/keys

	# generate a fluxbox menu
	CONFIG="${ALX_UNPRIV_HOME}/.fluxbox/menu"
	clearconfig

	# fluxbox menu header
	cat ${ALX_SKELETONS}/fluxbox/menu.header >> ${ALX_UNPRIV_HOME}/.fluxbox/menu
	# now fix it with proper messages :P
	local ver="$(< /etc/mageversion)"
	sed -i "s:@CHANGEME@:alx-${ver}  #${ALX_SERIAL}:g" ${ALX_UNPRIV_HOME}/.fluxbox/menu
	# add a newline (maybe there is no crlf in the header)
	addconfig

	# first generate session files
	for i in ${all_ses_ids}
	do
		evaluate_table cfg_sessions "where serial='${ALX_SERIAL}' and id='${i}'"
		generate_ica_session_file \
			--session "${cfg_sessions_session}" \
			--filename "$(fix_whitespaces ${cfg_sessions_filename})" \
			--username "${cfg_sessions_username}" \
			--password "${cfg_sessions_password}" \
			--domain "${cfg_sessions_domain}" \
			--server "${cfg_sessions_browseradrs}" \
			--colordepth "${cfg_graphic_depth}"

		# fluxbox menusession
		addconfig "[exec] (${cfg_sessions_session}) {nice -n 19 wfica ${ALX_ICA_SESSIONS}/$(fix_whitespaces ${cfg_sessions_filename})}"
	done

	# delete all progs
	progsh_path="${ALX_UNPRIV_HOME}/.alxprogs"
	[ -d ${progsh_path} ] && rm -rf ${progsh_path}
	install -d ${progsh_path}

	# add other menuitems
	for i in ${all_other_ids}
	do
		evaluate_table cfg_other_menuitems "where serial='${ALX_SERIAL}' and id='${i}'"

		# now echo config line for fluxbox-menu
		# make it "configureable" :p
		if [[ -n ${cfg_other_menuitems_workdir} ]]
		then
			workdir="--workdir ${cfg_other_menuitems_workdir}"
		fi
		if [[ -n ${cfg_other_menuitems_icon} ]]
		then
			cfg_other_menuitems_icon="<${cfg_other_menuitems_icon}>"
		fi

		# gen prog startup wrapper
		generate_program_sh \
			--name "${cfg_other_menuitems_name}" \
			--exec "${cfg_other_menuitems_exec}" \
			--param "${cfg_other_menuitems_param}" \
			--dest "${progsh_path}/$(fix_whitespaces ${cfg_other_menuitems_name})" \
			"${workdir}"

		addconfig "[exec] (${cfg_other_menuitems_name}) {${progsh_path}/$(fix_whitespaces ${cfg_other_menuitems_name})} ${cfg_other_menuitems_icon}"
	done

	# fluxbox menu footer
	cat ${ALX_SKELETONS}/fluxbox/menu.footer >> ${ALX_UNPRIV_HOME}/.fluxbox/menu
	# add a newline (maybe there is no crlf in the footer)
	addconfig

	# now it's a good time to generate *all* icons :)
	generate_all_desktop_icons "${all_ses_ids}" "${all_other_ids}"

	# fix permissions
	chown ${ALX_UNPRIV_USER}:${ALX_UNPRIV_GROUP} ${ALX_UNPRIV_HOME}
	chown ${ALX_UNPRIV_USER}:${ALX_UNPRIV_GROUP} ${ALX_UNPRIV_HOME}/.fluxbox
	chmod 0755 ${ALX_UNPRIV_HOME}/.fluxbox
	chmod 0755 ${ALX_UNPRIV_HOME}/.idesktop
	chmod 0644 ${ALX_UNPRIV_HOME}/.ideskrc
}