opkg install luasocket

mkdir /root/lua
cd /root/lua
wget https://raw.githubusercontent.com/craigmj/json4lua/master/json/json.lua
wget https://raw.githubusercontent.com/Krzakuuu/hass-ubus-openwrt/main/main.lua
(edit this file)

nano /etc/init.d/hass-ubus-openwrt 
chmod +x /etc/init.d/hass-ubus-openwrt

#!/bin/sh /etc/rc.common

START=99
USE_PROCD=1

start_service() {
    procd_open_instance
    procd_set_param command /usr/bin/lua /root/lua/main.lua
    procd_set_param stdout 1
    procd_set_param stderr 1
    procd_set_param respawn
    procd_close_instance
}

stop_service() {
    procd_close_instance
}

/etc/init.d/hass-ubus-openwrt enable
/etc/init.d/hass-ubus-openwrt start