#
# "printer-script" ("printer-vendor-script") package
#
# NOTE: This file must be "sourced" (not executed).
#

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

human_readable_name() {
	echo "printer script package"
}

package_name() {
	echo "printer"
}

package_suffix(){
	echo "-script"
}

dependencies() {
	echo "printer"
}

get_missing_requirements() {
	log_variable FORCENOCUPS
	if [ -n "${FORCENOCUPS}" ] ; then
		echo "cups"
	fi
	if ! test -f /etc/cups/printers.conf && ! test -e /usr/sbin/cupsd ; then
		echo "cups"
	fi
	log_message ""
}

report_missing_requirements() {
	show_nls_message "**** CUPS package is currently not installed on your system. Please install it first to install & use print driver properly."
}

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

instdir_cups_data() {
	local d
	if which cups-config >/dev/null 2>&1; then
		d=$(cups-config --datadir)
		log_message "INSTDIR_CUPS_DATA(actual): <$d>"
	else
		d=/usr/share/cups
		log_message "INSTDIR_CUPS_DATA(default): <$d>"
	fi
	echo "$d"
}

restart_cups() {
	# For systems with systemd and on-demand CUPS activation,
	# query CUPS to ensure that the service is running
	lpstat >/dev/null 2>&1

	if service cups status >/dev/null 2>&1 ; then
		CUPS_SCRIPT="service cups"
	elif service cups start; then
		# it means we just started 'cups' that was 'inactive'
		return 0
	elif test -e /etc/init.d/cups ; then
		CUPS_SCRIPT="/etc/init.d/cups"
	elif test -e /etc/init.d/cupsys ; then
		CUPS_SCRIPT="/etc/init.d/cupsys"
	else
		return 1
	fi
	log_variable CUPS_SCRIPT

	$CUPS_SCRIPT restart
}

contains_item() {
# $1 - item to check
# $2... - items list
	local i="$1"
	while [ $# -gt 1 ]; do
		shift
		if [ "$i" = "$1" ]; then
			return 0
		fi
	done
	return 1
}

get_ppd_text() {
# $1 - PPD file
	grep '*NickName:' "$1" | awk -F\" '{print $2}'
}

get_ppd_id() {
# $1 - PPD file
	get_ppd_text "$1" | tr -d " "
}

unregister_cups_printers() {
	log_message "unregister_cups_printers"
	# FIXME: check if CUPS running and run it if not

	PPD_DIST=`ls $INSTDIR_PPD/*.ppd 2>/dev/null`
	PPD_CUPS=`ls /etc/cups/ppd/*.ppd 2>/dev/null`
	log_message "PPD_DIST: '$PPD_DIST'"
	log_message "PPD_CUPS: '$PPD_CUPS'"

	if [ "$PPD_DIST" ]; then
		for f in $PPD_DIST; do
			PPD_ID_LIST=$PPD_ID_LIST\ $(get_ppd_id "$f")
		done
		log_message "PPD_ID_LIST: '$PPD_ID_LIST'"

		PRINTERS_TO_UNINSTALL=
		for f in $PPD_CUPS ; do
			PPD_ID=$(get_ppd_id "$f")
			if contains_item "$PPD_ID" $PPD_ID_LIST; then
				PRINTERS_TO_UNINSTALL=$PRINTERS_TO_UNINSTALL\ $(basename "$f" .ppd)
			fi
		done
		log_message "Printers to be removed: '$PRINTERS_TO_UNINSTALL'"

		for PRINTER_NAME in $PRINTERS_TO_UNINSTALL ; do
			show_nls_message "**** Removing printer \${PRINTER_NAME} ..."
			lpadmin -x ${PRINTER_NAME} 2> /dev/null || true
			lpoptions -x ${PRINTER_NAME} > /dev/null 2>&1 || true
		done
	fi
}

install_base_files() {
	## packet specific files
	## install ppd
	mkdir_p "$INSTALL_DIR_DATA"
	mkdir_p "$INSTDIR_PPD"
	copy_directories "$DIST_PPD_PATH" "$INSTDIR_PPD"

	lns_p "$INSTDIR_PPD" "$INSTDIR_CUPS_PPD"
	lns_p "$INSTDIR_PPD" "$INSTDIR_LSB_PPD"
}

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

do_install() {
	log_message "installing '${VENDOR_LC}'/'$(package_name)' package"

	local TEMP_LOG_FILE=`mktemp -t temp.log.XXX`
	log_variable TEMP_LOG_FILE

	install_base_files 2>&1 | log_redirected_output

	if restart_cups >"${TEMP_LOG_FILE}" 2>&1 ; then
		show_nls_message "**** CUPS restart OK."
	else
		cat "${TEMP_LOG_FILE}" | log_redirected_output
		show_nls_message "**** CUPS restart FAILED."
	fi

	rm -f "${TEMP_LOG_FILE}" 1>/dev/null 2>&1

	return 0
}

do_uninstall() {
	log_message "uninstalling '${VENDOR_LC}'/'$(package_name)' package"
	restart_cups 2>&1 | log_redirected_output

	return 0
}

package_init() {
	INSTALL_DIR_DATA=$INSTALL_DIR/share
	INSTDIR_PPD=$INSTALL_DIR_DATA/ppd
	INSTDIR_CMS=$INSTDIR_PPD/cms

	SUBDIR_VENDOR_PPD=uld-$VENDOR_LC
	INSTDIR_LSB_PPD=/usr/share/ppd/$SUBDIR_VENDOR_PPD

	INSTDIR_CUPS_DATA=$(instdir_cups_data)
	INSTDIR_CUPS_PPD=$INSTDIR_CUPS_DATA/model/$SUBDIR_VENDOR_PPD

	# TODO: put here real path
	# now try to find ppd in uld/noarch
	DIST_PPD_PATH="${DIST_DIR}/noarch/share/ppd"

	#if [ "$UNINSTALLMODE" ] ; then
	#	unregister_cups_printers
	#fi
}