#!/sbin/openrc-run
# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

description="FastFlowLM NPU runtime — OpenAI-compatible LLM server on XDNA2."

# Set FLM_USER in /etc/conf.d/fastflowlm. No default — the service
# refuses to start until it's configured.
: ${FLM_USER:=}
: ${FLM_MODEL:=qwen3:0.6b}
: ${FLM_HOST:=127.0.0.1}
: ${FLM_PORT:=}
: ${FLM_ASR:=1}
: ${FLM_EMBED:=1}
: ${FLM_PMODE:=performance}
: ${FLM_LOG:=/var/log/flm.log}
: ${FLM_EXTRA_OPTS:=}

supervisor="supervise-daemon"
command="/usr/bin/flm"
output_log="${FLM_LOG}"
error_log="${FLM_LOG}"
respawn_delay=5
respawn_max=0

# FLM mlocks NPU buffers — memlock must be unlimited.
rc_ulimit="-l unlimited"

depend() {
	need net
	after net
}

start_pre() {
	if [ -z "${FLM_USER}" ]; then
		eerror "FLM_USER is not set in /etc/conf.d/fastflowlm."
		eerror "Set it to the local user that owns the FLM model cache."
		return 1
	fi
	if ! getent passwd "${FLM_USER}" > /dev/null; then
		eerror "User '${FLM_USER}' not found on this system."
		return 1
	fi
	local args="serve --host ${FLM_HOST} --pmode ${FLM_PMODE} -a ${FLM_ASR} -e ${FLM_EMBED}"
	[ -n "${FLM_PORT}" ] && args="${args} --port ${FLM_PORT}"
	[ -n "${FLM_EXTRA_OPTS}" ] && args="${args} ${FLM_EXTRA_OPTS}"
	args="${args} ${FLM_MODEL}"
	command_args="${args}"
	command_user="${FLM_USER}:${FLM_USER}"
}