#!/sbin/openrc-run

DENDRITE=${SVCNAME#*.}
: ${DENDRITE_CONFDIR:=${RC_PREFIX%/}/etc/dendrite}

if [ -n "${DENDRITE}" ] && [ ${SVCNAME} != "dendrite" ]; then
: ${DENDRITE_CONFIG:=${DENDRITE_CONFDIR}/${DENDRITE}.yaml}
: ${DENDRITE_PIDFILE:=${RC_PREFIX%/}/run/dendrite.${DENDRITE}.pid}
: ${DENDRITE_RC_CONFIG:=${RC_PREFIX%/}/etc/conf.d/dendrite.${DENDRITE}}
else
: ${DENDRITE_CONFIG:=${DENDRITE_CONFDIR}/dendrite.yaml}
: ${DENDRITE_PIDFILE:=${RC_PREFIX%/}/run/${SVCNAME}.pid}
: ${DENDRITE_RC_CONFIG:=${RC_PREFIX%/}/etc/conf.d/dendrite}
fi

if [ -n "${DENDRITE_BINARY}" ] ; then
	: # Do nothing, DENDRITE_BINARY is set externally.
elif [ -z "${DENDRITE_MODE}" -o "${DENDRITE_MODE}" == "monolith" ] ; then
	DENDRITE_BINARY=${RC_PREFIX%/}/usr/bin/dendrite
elif [ "${DENDRITE_MODE}" == "polylith" ] ; then
	echo "Polylith mode has been deprecated!" >&2
	echo "Please, reconfigure, and run as monolith mode instead" >&2
	echo "(Unfortunately, I am unaware of any guide how to do this," >&2
	echo "If you need help, you'll have to use the regular support channels)" >&2
	exit 1
else
	echo "Unknown dendrite mode: \"${DENDRITE_MODE}\"." >&2
	echo "Check the DENDRITE_MODE variable in ${DENDRITE_RC_CONFIG}" >&2
	exit 1
fi

command="${DENDRITE_BINARY}"
pidfile="${DENDRITE_PIDFILE}"
command_background=true
command_user="dendrite:dendrite"
directory="/var/lib/dendrite"
command_args="${DENDRITE_OPTS} -config ${DENDRITE_CONFIG}"

checkconfig() {
	test -f "${DENDRITE_CONFIG}" || {
		echo "\"${DENDRITE_CONFIG}\" does not exist or is not a regular file." >&2
		echo "Please, look at https://github.com/matrix-org/dendrite for instructions" >&2
		echo "on how to configure your dendrite instance, and use" >&2
		echo "\"${DENDRITE_CONFIDR}/dendrite-sample.yaml\" as an example." >&2
		return 1
	}
}

start_pre() {
	# If this isn't a restart, make sure that the user's config isn't
	# busted before we try to start the daemon (this will produce
	# better error messages than if we just try to start it blindly).
	#
	# If, on the other hand, this *is* a restart, then the stop_pre
	# action will have ensured that the config is usable and we don't
	# need to do that again.
	if [ "${RC_CMD}" != "restart" ] ; then
		checkconfig || return $?
	fi
}

stop_pre() {
	# If this is a restart, check to make sure the user's config
	# isn't busted before we stop the running daemon.
	if [ "${RC_CMD}" = "restart" ] ; then
		checkconfig || return $?
	fi
}