#!/sbin/openrc-run
# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License, v2 or later

# shellcheck shell=sh

depend() {
	need net
}

checkconfig() {
	if [ -n "${DISPLAYS}" ]; then
		if [ "$1" = "start" ]; then
			for user in $DISPLAYS; do
				if eval [ ! -f "~${user%%:*}/.vnc/passwd" ]; then
					eerror "There are no passwords defined for user ${user%%:*}."
					return 1
				elif [ -e "/tmp/.X11-unix/X${user##*:}" ]; then
					eerror "Display :${user##*:} appears to be already in use because of /tmp/.X11-unix/X${user##*:}"
					eerror "Remove this file if there is no X server for :${user##*:}"
					return 1
				elif [ -e "/tmp/.X${user##*:}-lock" ]; then
					eerror "Display :${user##*:} appears to be already in use because of /tmp/.X${user##*:}-lock"
					eerror "Remove this file if there is no X server for :${user##*:}"
					return 1
				elif ! grep -E "^[^#]*:${user##*:}=${user%%:*}" /etc/tigervnc/vncserver.users > /dev/null 2>&1; then
					eerror "User ${user%%:*} is not defined for display :${user##*:} in /etc/tigervnc/vncserver.users"
					return 1
				fi
			done
		fi
		return 0
	else
		# here it is intended for $DISPLAYS to not expand
		# shellcheck disable=SC2016
		eerror 'Please define $DISPLAYS in /etc/conf.d/tigervnc'
		return 1
	fi
}

start() {
	checkconfig start || return 1
	ebegin "Starting TigerVNC server"
	for user in $DISPLAYS; do
		[ -n "${TIGERVNC_XSESSION_FILE}" ] && export TIGERVNC_XSESSION_FILE
		/usr/libexec/vncsession-start ":${user##*:}" >/dev/null 2>&1
	done
	eend $?
}

stop() {
	checkconfig stop || return 2
	ebegin "Stopping TigerVNC server"
	for user in $DISPLAYS; do
		# vncserver no longer provides a `-kill` option
		# killing vncsession does not work, we have to kill Xvnc
		# run pstree to see exactly what's going on
		sessionpid=$(cat /run/vncsession-:"${user##*:}".pid)
		serverpid=$(pstree -p "$sessionpid" | grep Xvnc | sed -e 's/^.*Xvnc(//
			s/).*$//')
		kill "$serverpid" >/dev/null 2>&1
	done
	# Do not fail if a server is missing
	/bin/true
	eend $?
}

restart() {
        svc_stop
        svc_start
}